{"id":5816,"date":"2025-12-25T02:02:32","date_gmt":"2025-12-25T02:02:32","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5816"},"modified":"2025-12-25T02:02:32","modified_gmt":"2025-12-25T02:02:32","slug":"injection-molding-parameters-for-common-plastics","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/vi\/blog\/injection-molding-parameters-for-common-plastics\/","title":{"rendered":"Th\u00f4ng s\u1ed1 \u00e9p phun cho c\u00e1c lo\u1ea1i nh\u1ef1a th\u00f4ng d\u1ee5ng"},"content":{"rendered":"

Gi\u1edbi thi\u1ec7u v\u1ec1 c\u00e1c th\u00f4ng s\u1ed1 \u00e9p phun<\/h2>\n
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C\u00e1c th\u00f4ng s\u1ed1 \u00e9p phun r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 t\u1ea1o ra c\u00e1c s\u1ea3n ph\u1ea9m nh\u1ef1a ch\u1ea5t l\u01b0\u1ee3ng cao v\u1edbi c\u00e1c \u0111\u1eb7c t\u00ednh \u1ed5n \u0111\u1ecbnh. C\u00e1c th\u00f4ng s\u1ed1 n\u00e0y bao g\u1ed3m nhi\u1ec7t \u0111\u1ed9 th\u00f9ng m\u00e1y, nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y, nhi\u1ec7t \u0111\u1ed9 khu\u00f4n, \u00e1p su\u1ea5t phun, \u00e1p su\u1ea5t gi\u1eef, \u00e1p su\u1ea5t ng\u01b0\u1ee3c, t\u1ed1c \u0111\u1ed9 phun, t\u1ed1c \u0111\u1ed9 tr\u1ee5c v\u00edt, h\u00e0nh tr\u00ecnh \u0111\u1ecbnh l\u01b0\u1ee3ng, l\u01b0\u1ee3ng d\u01b0, \u0111i\u1ec1u ki\u1ec7n s\u1ea5y s\u01a1 b\u1ed9, t\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i, t\u1ef7 l\u1ec7 co ng\u00f3t, h\u1ec7 th\u1ed1ng d\u1eabn li\u1ec7u, quy tr\u00ecnh t\u1eaft m\u00e1y v\u00e0 y\u00eau c\u1ea7u thi\u1ebft b\u1ecb. Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u00e0 ki\u1ec3m so\u00e1t \u0111\u00fang c\u00e1ch \u0111\u1ea3m b\u1ea3o d\u00f2ng ch\u1ea3y, l\u00e0m m\u00e1t v\u00e0 \u0111\u00f4ng \u0111\u1eb7c t\u1ed1i \u01b0u, gi\u1ea3m thi\u1ec3u c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 cong v\u00eanh, l\u1ed7 r\u1ed7ng ho\u1eb7c c\u00e1c khuy\u1ebft \u0111i\u1ec3m b\u1ec1 m\u1eb7t.<\/p>\n

H\u01b0\u1edbng d\u1eabn n\u00e0y bao g\u1ed3m c\u00e1c th\u00f4ng s\u1ed1 cho c\u00e1c lo\u1ea1i nh\u1ef1a th\u00f4ng d\u1ee5ng, d\u1ef1a tr\u00ean c\u00e1c ti\u00eau chu\u1ea9n v\u00e0 th\u1ef1c ti\u1ec5n t\u1ed1t nh\u1ea5t trong ng\u00e0nh. M\u1ed7i lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh nhi\u1ec7t, l\u01b0u bi\u1ebfn v\u00e0 c\u01a1 h\u1ecdc ri\u00eang bi\u1ec7t \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh gia c\u00f4ng. V\u00ed d\u1ee5, c\u00e1c polyme k\u1ebft tinh nh\u01b0 HDPE y\u00eau c\u1ea7u ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ec3 k\u1ebft tinh, trong khi c\u00e1c polyme v\u00f4 \u0111\u1ecbnh h\u00ecnh nh\u01b0 PS t\u1eadp trung v\u00e0o vi\u1ec7c qu\u1ea3n l\u00fd \u0111\u1ed9 nh\u1edbt. C\u00e1c k\u1ef9 s\u01b0 n\u00ean \u0111i\u1ec1u ch\u1ec9nh c\u00e1c th\u00f4ng s\u1ed1 d\u1ef1a tr\u00ean h\u00ecnh d\u1ea1ng chi ti\u1ebft, kh\u1ea3 n\u0103ng c\u1ee7a m\u00e1y m\u00f3c v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng \u0111\u1ec3 n\u00e2ng cao n\u0103ng su\u1ea5t v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a chi ti\u1ebft.<\/p>\n

C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n c\u00e2n nh\u1eafc ch\u00ednh bao g\u1ed3m an to\u00e0n, hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 t\u00ednh b\u1ec1n v\u1eefng. Lu\u00f4n lu\u00f4n ki\u1ec3m tra c\u00e1c th\u00f4ng s\u1ed1 v\u1edbi b\u1ea3ng d\u1eef li\u1ec7u v\u1eadt li\u1ec7u v\u00e0 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m \u0111\u1ed1i v\u1edbi c\u00e1c thi\u1ebft l\u1eadp m\u1edbi. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y gi\u00fap gi\u1ea3m t\u1ef7 l\u1ec7 ph\u1ebf ph\u1ea9m v\u00e0 c\u1ea3i thi\u1ec7n th\u1eddi gian chu k\u1ef3, g\u00f3p ph\u1ea7n v\u00e0o s\u1ea3n xu\u1ea5t ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/p>\n<\/section>\n

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Polyethylene m\u1eadt \u0111\u1ed9 cao (HDPE)<\/h2>\n

HDPE l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo b\u00e1n tinh th\u1ec3 n\u1ed5i ti\u1ebfng v\u1edbi kh\u1ea3 n\u0103ng kh\u00e1ng h\u00f3a ch\u1ea5t tuy\u1ec7t v\u1eddi, \u0111\u1ed9 h\u00fat \u1ea9m th\u1ea5p v\u00e0 \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp cao. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c lo\u1ea1i th\u00f9ng ch\u1ee9a, \u1ed1ng d\u1eabn v\u00e0 \u0111\u1ed3 ch\u01a1i. Qu\u00e1 tr\u00ecnh gia c\u00f4ng \u0111\u00f2i h\u1ecfi ph\u1ea3i ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 c\u1ea9n th\u1eadn \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 k\u1ebft tinh \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 tr\u00e1nh bi\u1ebfn d\u1ea1ng.<\/p>\n

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\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 30-50\u00b0C; V\u00f9ng 1: 160-250\u00b0C; V\u00f9ng 2: 200-300\u00b0C; V\u00f9ng 3-5: 220-300\u00b0C; V\u00f2i phun: 220-300\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n200-280\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n20-60\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n80-140 MPa (l\u00ean \u0111\u1ebfn 180 MPa \u0111\u1ed1i v\u1edbi th\u00e0nh m\u1ecfng)<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n30-60% \u00e1p su\u1ea5t phun<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-20 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nM\u1ee9c trung b\u00ecnh cho bao b\u00ec th\u00f4ng th\u01b0\u1eddng; m\u1ee9c cao cho bao b\u00ec th\u00e0nh m\u1ecfng.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nV\u1eadn t\u1ed1c tuy\u1ebfn t\u00ednh l\u00ean \u0111\u1ebfn 1,3 m\/s<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-4D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-8 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c; \u1ee6 \u1edf 80\u00b0C trong 1 gi\u1edd n\u1ebfu b\u1ea3o qu\u1ea3n k\u00e9m.<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 100%<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n1.2-2.5%; \u0111\u1ed9 co r\u00fat cao, c\u00f3 kh\u1ea3 n\u0103ng b\u1ecb bi\u1ebfn d\u1ea1ng; kh\u00f4ng co r\u00fat th\u00eam sau 24 gi\u1edd.<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nC\u1ed5ng phun \u0111i\u1ec3m; h\u1ec7 th\u1ed1ng d\u1eabn nhi\u1ec7t (c\u00f3 gia nhi\u1ec7t ho\u1eb7c c\u00e1ch nhi\u1ec7t); ti\u1ebft di\u1ec7n nh\u1ecf, ph\u00f9 h\u1ee3p cho c\u00e1c chi ti\u1ebft m\u1ecfng.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nKh\u00f4ng c\u1ea7n v\u1ec7 sinh \u0111\u1eb7c bi\u1ec7t; nh\u1ef1a HDPE ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nTr\u1ee5c v\u00edt ti\u00eau chu\u1ea9n; tr\u1ee5c v\u00edt ba \u0111o\u1ea1n d\u00f9ng chung; c\u00e1c \u0111o\u1ea1n tr\u1ed9n\/c\u1eaft \u0111\u1eb7c bi\u1ec7t d\u00f9ng cho \u0111\u00f3ng g\u00f3i (L=25D); v\u00f2i phun th\u1eb3ng, van m\u1ed9t chi\u1ec1u<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\u0110\u1ec3 \u0111\u1ea1t k\u1ebft qu\u1ea3 t\u1ed1i \u01b0u, h\u00e3y \u0111\u1ea3m b\u1ea3o chu tr\u00ecnh \u0111\u1ecbnh l\u01b0\u1ee3ng 4D \u0111\u1ee7 th\u1eddi gian l\u01b0u gi\u1eef v\u1eadt li\u1ec7u n\u00f3ng ch\u1ea3y. C\u00f3 th\u1ec3 cho ph\u00e9p t\u1ed1c \u0111\u1ed9 tr\u1ee5c v\u00edt cao n\u1ebfu qu\u00e1 tr\u00ecnh h\u00f3a d\u1ebbo ho\u00e0n t\u1ea5t tr\u01b0\u1edbc khi qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i k\u1ebft th\u00fac. \u0110i\u1ec1u ch\u1ec9nh cho c\u00e1c chi ti\u1ebft th\u00e0nh m\u1ecfng \u0111\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng t\u1eafc ngh\u1ebdn d\u00f2ng ch\u1ea3y.<\/p>\n<\/section>\n

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Polypropylene (PP)<\/h2>\n

PP l\u00e0 m\u1ed9t lo\u1ea1i polymer b\u00e1n tinh th\u1ec3 \u0111a n\u0103ng v\u1edbi kh\u1ea3 n\u0103ng kh\u00e1ng h\u00f3a ch\u1ea5t t\u1ed1t, \u0111\u1ed9 b\u1ec1n m\u1ecfi cao v\u00e0 gi\u00e1 th\u00e0nh th\u1ea5p. N\u00f3 l\u00fd t\u01b0\u1edfng cho c\u00e1c b\u1ed9 ph\u1eadn \u00f4 t\u00f4, bao b\u00ec v\u00e0 h\u00e0ng ti\u00eau d\u00f9ng. Qu\u00e1 tr\u00ecnh gia c\u00f4ng t\u1eadp trung v\u00e0o vi\u1ec7c ki\u1ec3m so\u00e1t \u0111\u1ed9 co ng\u00f3t v\u00e0 \u0111\u1ea3m b\u1ea3o l\u00e0m ngu\u1ed9i \u0111\u1ed3ng \u0111\u1ec1u \u0111\u1ec3 tr\u00e1nh c\u00e1c v\u1ebft l\u00f5m.<\/p>\n

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\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 30-50\u00b0C; V\u00f9ng 1: 160-250\u00b0C; V\u00f9ng 2: 200-300\u00b0C; V\u00f9ng 3-5: 220-300\u00b0C; V\u00f2i phun: 220-300\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n200-280\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n20-70\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n80-140 MPa (l\u00ean \u0111\u1ebfn 180 MPa \u0111\u1ed1i v\u1edbi bao b\u00ec th\u00e0nh m\u1ecfng)<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n\u00c1p su\u1ea5t phun: 30-60%; Th\u1eddi gian chu k\u1ef3: ~30%<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-20 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nCao \u0111\u1ed1i v\u1edbi bao b\u00ec th\u00e0nh m\u1ecfng (c\u00f3 b\u1ed9 t\u00edch \u00e1p); trung b\u00ecnh \u0111\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i kh\u00e1c.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nV\u1eadn t\u1ed1c tuy\u1ebfn t\u00ednh l\u00ean \u0111\u1ebfn 1,2 m\/s<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-4D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-8 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c; \u1ee6 \u1edf 80\u00b0C trong 1 gi\u1edd n\u1ebfu b\u1ea3o qu\u1ea3n k\u00e9m.<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 100%<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n1,2-2,5%; \u0111\u1ed9 co r\u00fat cao; kh\u00f4ng co r\u00fat th\u00eam sau 24 gi\u1edd.<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nC\u1eeda van \u0111i\u1ec3m ho\u1eb7c \u0111a \u0111i\u1ec3m; h\u1ec7 th\u1ed1ng d\u1eabn nhi\u1ec7t (c\u00f3 gia nhi\u1ec7t ho\u1eb7c c\u00e1ch nhi\u1ec7t); c\u1eeda van \u1edf ph\u1ea7n d\u00e0y nh\u1ea5t \u0111\u1ec3 tr\u00e1nh t\u1ea1o v\u1ebft l\u00f5m.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nKh\u00f4ng c\u1ea7n v\u1ec7 sinh \u0111\u1eb7c bi\u1ec7t; nh\u1ef1a PP ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nTr\u1ee5c v\u00edt ti\u00eau chu\u1ea9n; tr\u1ee5c v\u00edt ba \u0111o\u1ea1n d\u00f9ng chung; c\u00e1c \u0111o\u1ea1n tr\u1ed9n\/c\u1eaft \u0111\u1eb7c bi\u1ec7t d\u00f9ng cho \u0111\u00f3ng g\u00f3i (L=25D); v\u00f2i phun th\u1eb3ng, van m\u1ed9t chi\u1ec1u<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Th\u1eddi gian gi\u1eef nhi\u1ec7t l\u00e2u r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 ng\u0103n ng\u1eeba c\u00e1c v\u1ebft l\u00f5m \u1edf nh\u1eefng ph\u1ea7n d\u00e0y. V\u1ecb tr\u00ed \u0111\u1eb7t c\u1eeda r\u00f3t t\u1ea1i \u0111i\u1ec3m d\u00e0y nh\u1ea5t gi\u00fap gi\u1ea3m thi\u1ec3u s\u1ef1 bi\u1ebfn \u0111\u1ed5i do co ng\u00f3t. S\u1eed d\u1ee5ng b\u1ed9 t\u00edch \u00e1p \u0111\u1ec3 chi\u1ebft r\u00f3t t\u1ed1c \u0111\u1ed9 cao trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u00f3ng g\u00f3i.<\/p>\n<\/section>\n

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X\u1ed1p polystyrene (PS)<\/h2>\n

PS l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u00f3 \u0111\u1ed9 trong su\u1ed1t cao, \u0111\u1ed9 c\u1ee9ng t\u1ed1t v\u00e0 gi\u00e1 th\u00e0nh th\u1ea5p. N\u00f3 ph\u00f9 h\u1ee3p cho bao b\u00ec, \u0111\u1ed3 ch\u01a1i v\u00e0 c\u00e1c v\u1eadt d\u1ee5ng d\u00f9ng m\u1ed9t l\u1ea7n. Quy tr\u00ecnh s\u1ea3n xu\u1ea5t ch\u00fa tr\u1ecdng v\u00e0o vi\u1ec7c \u00e9p phun nhanh \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n t\u1ed1t v\u00e0 gi\u1ea3m thi\u1ec3u c\u00e1c \u0111\u01b0\u1eddng h\u00e0n.<\/p>\n

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Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 30-50\u00b0C; V\u00f9ng 1: 160-250\u00b0C; V\u00f9ng 2: 200-300\u00b0C; V\u00f9ng 3-5: 220-300\u00b0C; V\u00f2i phun: 220-300\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n200-280\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n15-50\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n80-140 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n\u00c1p su\u1ea5t phun 30-60%; th\u1eddi gian gi\u1eef ng\u1eafn<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-10 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nNhanh ch\u00f3ng, nhi\u1ec1u giai \u0111o\u1ea1n d\u1ef1a tr\u00ean h\u00ecnh d\u1ea1ng chi ti\u1ebft; r\u1ea5t nhanh \u0111\u1ed1i v\u1edbi bao b\u00ec th\u00e0nh m\u1ecfng (v\u1edbi b\u1ed9 t\u00edch \u00e1p)<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 tuy\u1ebfn t\u00ednh l\u00ean \u0111\u1ebfn 1,3 m\/s; qu\u00e1 tr\u00ecnh h\u00f3a d\u1ebbo ch\u1eadm \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi th\u1eddi gian l\u00e0m ngu\u1ed9i.<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-4D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-8 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c; \u1ee6 \u1edf 80\u00b0C trong 1 gi\u1edd n\u1ebfu b\u1ea3o qu\u1ea3n k\u00e9m.<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 100%<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0.3-0.6%<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nC\u1eeda van \u0111i\u1ec3m; h\u1ec7 th\u1ed1ng d\u1eabn nhi\u1ec7t (c\u00f3 gia nhi\u1ec7t ho\u1eb7c c\u00e1ch nhi\u1ec7t); ti\u1ebft di\u1ec7n nh\u1ecf l\u00e0 \u0111\u1ee7.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nKh\u00f4ng c\u1ea7n v\u1ec7 sinh \u0111\u1eb7c bi\u1ec7t; PS ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 cao.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n; v\u00f2i phun th\u1eb3ng, van m\u1ed9t chi\u1ec1u<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\u00c1p su\u1ea5t ng\u01b0\u1ee3c th\u1ea5p ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t kh\u00ed, tr\u00e1nh t\u1ea1o v\u1ec7t. Qu\u00e1 tr\u00ecnh h\u00f3a d\u1ebbo ch\u1eadm \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng n\u00f3ng ch\u1ea3y t\u1ed1t cho c\u00e1c chi ti\u1ebft c\u00f3 \u0111\u1ed9 b\u00f3ng cao. Th\u00f4ng h\u01a1i khu\u00f4n \u0111\u00fang c\u00e1ch \u0111\u1ec3 tr\u00e1nh b\u1ecb ch\u00e1y.<\/p>\n<\/section>\n

\n

Polyvinyl clorua \u2013 Kh\u00f4ng d\u1ebbo h\u00f3a (PVC-U)<\/h2>\n

PVC-U l\u00e0 m\u1ed9t lo\u1ea1i polymer v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u1ee9ng, c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng h\u00f3a ch\u1ea5t v\u00e0 ch\u1ed1ng ch\u00e1y t\u1ed1t. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u1ed1ng, ph\u1ee5 ki\u1ec7n v\u00e0 c\u00e1c c\u1ea5u h\u00ecnh kh\u00e1c. Qu\u00e1 tr\u00ecnh gia c\u00f4ng nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t, \u0111\u00f2i h\u1ecfi l\u1ef1c c\u1eaft th\u1ea5p \u0111\u1ec3 tr\u00e1nh b\u1ecb ph\u00e2n h\u1ee7y.<\/p>\n

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<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 30-50\u00b0C; V\u00f9ng 1: 140-160\u00b0C; V\u00f9ng 2: 165-180\u00b0C; V\u00f9ng 3-5: 180-210\u00b0C; Nhi\u1ec7t \u0111\u1ed9 v\u00f2i phun: 180-210\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n210-220\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n30-60\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n80-160 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n40-60% \u00e1p su\u1ea5t phun; d\u1ef1a tr\u00ean chi ti\u1ebft v\u00e0 c\u1ed5ng.<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\nL\u00ean \u0111\u1ebfn 30 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nCh\u1ebf \u0111\u1ed9 th\u1ea5p \u0111\u1ec3 tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng c\u1eaft x\u00e9; ch\u1ebf \u0111\u1ed9 nhi\u1ec1u giai \u0111o\u1ea1n n\u1ebfu c\u1ea7n thi\u1ebft cho c\u00e1c c\u1ea1nh ho\u1eb7c khu v\u1ef1c d\u1ec5 b\u1ecb h\u01b0 h\u1ecfng.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nM\u1ee9c th\u1ea5p nh\u1ea5t c\u00f3 th\u1ec3; v\u1eadn t\u1ed1c tuy\u1ebfn t\u00ednh l\u00ean \u0111\u1ebfn 0,2 m\/s; tr\u00ec ho\u00e3n qu\u00e1 tr\u00ecnh h\u00f3a d\u1ebbo n\u1ebfu c\u1ea7n thi\u1ebft.<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n1.0-3.5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n1-5 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n70\u00b0C trong 1 gi\u1edd n\u1ebfu b\u1ea3o qu\u1ea3n kh\u00f4ng t\u1ed1t<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\n\u0110\u01b0\u1ee3c ph\u00e9p n\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 suy gi\u1ea3m nhi\u1ec7t.<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0.5-0.7%<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nC\u1ed5ng van tr\u1ef1c ti\u1ebfp, d\u1ea1ng qu\u1ea1t ho\u1eb7c d\u1ea1ng m\u00e0ng; c\u1ed5ng van \u0111i\u1ec3m cho c\u00e1c chi ti\u1ebft nh\u1ecf; c\u00e1c \u0111o\u1ea1n chuy\u1ec3n ti\u1ebfp bo tr\u00f2n.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nT\u1eaft b\u1ebfp; \u0111\u1ec3 ch\u1ea5t l\u1ecfng n\u00f3ng ch\u1ea3y ngh\u1ec9 2-3 ph\u00fat, sau \u0111\u00f3 \u00e9p \u0111\u00f9n t\u1eeb t\u1eeb; l\u1eb7p l\u1ea1i cho \u0111\u1ebfn khi th\u00f9ng \u0111\u1ea1t 160\u00b0C, r\u1ed3i \u0111\u1ed5 h\u1ebft ch\u1ea5t l\u1ecfng ra.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nTr\u1ee5c v\u00edt b\u1eb1ng nh\u1ef1a PVC c\u1ee9ng; th\u00e2n tr\u1ee5c c\u00f3 ch\u1ee9c n\u0103ng gia nhi\u1ec7t\/l\u00e0m m\u00e1t; \u0111\u1ea7u tr\u1ee5c v\u00edt c\u00f3 r\u00e3nh; v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Nhi\u1ec7t sinh ra t\u1eeb ma s\u00e1t tr\u1ee5c v\u00edt t\u1ed1t h\u01a1n so v\u1edbi nhi\u1ec7t sinh ra t\u1eeb th\u00f9ng ch\u1ee9a do t\u00ednh nh\u1ea1y c\u1ea3m v\u1ec1 nhi\u1ec7t. \u0110\u1ea3m b\u1ea3o khe h\u1edf t\u1ed1i thi\u1ec3u gi\u1eefa th\u00f9ng v\u00e0 v\u1eadt li\u1ec7u \u0111\u1ec3 l\u1eafp r\u00e1p kh\u00edt. Theo d\u00f5i c\u00e1c d\u1ea5u hi\u1ec7u h\u01b0 h\u1ecfng nh\u01b0 thay \u0111\u1ed5i m\u00e0u s\u1eafc ho\u1eb7c m\u00f9i l\u1ea1.<\/p>\n<\/section>\n

\n

Polyvinyl clorua \u2013 Ch\u1ea5t d\u1ebbo h\u00f3a (P-PVC)<\/h2>\n

Nh\u1ef1a P-PVC c\u00f3 t\u00ednh d\u1ebbo cao, kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft t\u1ed1t v\u00e0 c\u00e1ch \u0111i\u1ec7n hi\u1ec7u qu\u1ea3. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong d\u00e2y d\u1eabn, \u1ed1ng m\u1ec1m v\u00e0 gio\u0103ng. Qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t s\u1eed d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n so v\u1edbi PVC-U \u0111\u1ec3 duy tr\u00ec t\u00ednh d\u1ebbo.<\/p>\n

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<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 30-50\u00b0C; V\u00f9ng 1: 140-160\u00b0C; V\u00f9ng 2: 150-180\u00b0C; V\u00f9ng 3-5: 160-220\u00b0C; Nhi\u1ec7t \u0111\u1ed9 v\u00f2i phun: 160-220\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n200-220\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n30-50\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n80-120 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n30-60% \u00e1p su\u1ea5t phun<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-10 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nKh\u00f4ng n\u00ean qu\u00e1 nhanh \u0111\u1ec3 c\u00f3 b\u1ec1 m\u1eb7t t\u1ed1t; n\u00ean th\u1ef1c hi\u1ec7n nhi\u1ec1u giai \u0111o\u1ea1n n\u1ebfu c\u1ea7n thi\u1ebft.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nM\u1ee9c \u0111\u1ed9 kh\u00f3: Trung b\u00ecnh; v\u1eadn t\u1ed1c tuy\u1ebfn t\u00ednh l\u00ean \u0111\u1ebfn 0,5 m\/s.<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n1.0-3.5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-6 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c; b\u1ea3o qu\u1ea3n \u1edf 70\u00b0C trong 1 gi\u1edd n\u1ebfu b\u1ea3o qu\u1ea3n k\u00e9m.<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\n\u0110\u01b0\u1ee3c ph\u00e9p n\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 suy gi\u1ea3m nhi\u1ec7t.<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n1-2.5%<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nC\u1ed5ng \u0111i\u1ec3m cho c\u00e1c chi ti\u1ebft nh\u1ecf; c\u00e1c \u0111\u01b0\u1eddng chuy\u1ec3n ti\u1ebfp bo tr\u00f2n.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nGia nhi\u1ec7t s\u00e1t; kh\u00f4ng c\u00f3 \u00e1p su\u1ea5t ng\u01b0\u1ee3c, chu k\u1ef3 \u00e9p \u0111\u00f9n<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Tr\u00e1nh t\u1ed1c \u0111\u1ed9 cao \u0111\u1ec3 ng\u0103n ng\u1eeba ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t k\u00e9m. Theo d\u00f5i s\u1ef1 di chuy\u1ec3n c\u1ee7a ch\u1ea5t h\u00f3a d\u1ebbo trong qu\u00e1 tr\u00ecnh b\u1ea3o qu\u1ea3n. S\u1eed d\u1ee5ng cho c\u00e1c \u1ee9ng d\u1ee5ng linh ho\u1ea1t \u0111\u00f2i h\u1ecfi \u0111\u1ed9 b\u1ec1n.<\/p>\n<\/section>\n

\n

Polyamide 6 (PA6)<\/h2>\n

PA6 l\u00e0 m\u1ed9t lo\u1ea1i polyamit b\u00e1n tinh th\u1ec3 c\u00f3 \u0111\u1ed9 b\u1ec1n cao, kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n v\u00e0 kh\u1ea3 n\u0103ng h\u00fat \u1ea9m t\u1ed1t. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u00e1nh r\u0103ng, \u1ed5 bi v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn \u00f4 t\u00f4. Qu\u00e1 tr\u00ecnh gia c\u00f4ng \u0111\u00f2i h\u1ecfi ph\u1ea3i s\u1ea5y kh\u00f4 \u0111\u1ec3 ki\u1ec3m so\u00e1t \u0111\u1ed9 \u1ea9m nh\u1eb1m \u0111\u1ea3m b\u1ea3o c\u00e1c \u0111\u1eb7c t\u00ednh \u1ed5n \u0111\u1ecbnh.<\/p>\n

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<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 60-90\u00b0C; V\u00f9ng 1-2: 230-240\u00b0C; V\u00f9ng 3-5: 240-250\u00b0C; V\u00f2i phun: 230-240\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n240-250\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n60-100\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n100-160 MPa (l\u00ean \u0111\u1ebfn 180 MPa \u0111\u1ed1i v\u1edbi c\u00e1c thanh d\u1eabn m\u1ecfng v\u00e0 d\u00e0i)<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n50% \u00e1p su\u1ea5t phun; th\u1eddi gian ng\u1eafn<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n2-8 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nNhanh; th\u00f4ng gi\u00f3 t\u1ed1t \u0111\u1ec3 tr\u00e1nh b\u1ecb ch\u00e1y.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 l\u00ean \u0111\u1ebfn 1 m\/s; t\u1ed1c \u0111\u1ed9 th\u1ea5p \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t.<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-3,5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-6 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n80\u00b0C trong 4 gi\u1edd; \u0111\u1ed9 \u1ea9m <0,25%<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 10%<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0,7-2,0%; 0,3-0,8% v\u1edbi s\u1ee3i th\u1ee7y tinh 30%<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\n\u0110i\u1ec3m, ti\u1ec1m \u1ea9n, h\u00ecnh qu\u1ea1t, tr\u1ef1c ti\u1ebfp; c\u00e1c h\u1ed1c k\u00edn cho d\u00f2ng ch\u1ea3y l\u1ea1nh; \u0111\u01b0\u1eddng d\u1eabn n\u00f3ng v\u1edbi \u0111i\u1ec1u khi\u1ec3n v\u00f2ng k\u00edn<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nKh\u00f4ng c\u1ea7n v\u1ec7 sinh; th\u1eddi gian l\u01b0u l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t tan ch\u1ea3y l\u00ean \u0111\u1ebfn 20 ph\u00fat.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nTr\u1ee5c v\u00edt ti\u00eau chu\u1ea9n v\u1edbi kh\u1ea3 n\u0103ng h\u00f3a d\u1ebbo cao; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng; th\u00e2n l\u01b0\u1ee1ng kim lo\u1ea1i cho v\u1eadt li\u1ec7u ch\u1ee9a s\u1ee3i th\u1ee7y tinh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

L\u00e0m ngu\u1ed9i ch\u1eadm gi\u00fap gi\u1ea3m co ng\u00f3t sau khi \u0111\u00fac v\u00e0 \u1ee9ng su\u1ea5t b\u00ean trong. S\u1eed d\u1ee5ng h\u01a1i n\u01b0\u1edbc \u0111\u1ec3 \u1ee7 n\u1ebfu c\u1ea7n. Ki\u1ec3m tra \u1ee9ng su\u1ea5t b\u1eb1ng dung m\u00f4i. \u0110\u1ed1i v\u1edbi v\u1eadt li\u1ec7u c\u00f3 ch\u1ee9a s\u1ee3i th\u1ee7y tinh, h\u00e3y s\u1eed d\u1ee5ng thi\u1ebft b\u1ecb ch\u1ed1ng m\u00e0i m\u00f2n.<\/p>\n<\/section>\n

\n

Polyamide 66 (PA66)<\/h2>\n

PA66 c\u00f3 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y v\u00e0 \u0111\u1ed9 c\u1ee9ng cao h\u01a1n PA6, \u0111\u1ed3ng th\u1eddi c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t t\u1ed1t. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u1ed9 ph\u1eadn d\u01b0\u1edbi n\u1eafp ca-p\u00f4 \u00f4 t\u00f4 v\u00e0 c\u00e1c \u0111\u1ea7u n\u1ed1i \u0111i\u1ec7n. Vi\u1ec7c s\u1ea5y kh\u00f4 l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng th\u1ee7y ph\u00e2n.<\/p>\n

\n
\n
\n
<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 60-90\u00b0C; V\u00f9ng 1-2: 260-290\u00b0C; V\u00f9ng 3-5: 280-290\u00b0C; V\u00f2i phun: 280-290\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n270-290\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n60-100\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n100-160 MPa (l\u00ean \u0111\u1ebfn 180 MPa \u0111\u1ed1i v\u1edbi c\u00e1c thanh d\u1eabn m\u1ecfng v\u00e0 d\u00e0i)<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n50% \u00e1p su\u1ea5t phun; th\u1eddi gian ng\u1eafn<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n2-8 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nNhanh; th\u00f4ng gi\u00f3 t\u1ed1t \u0111\u1ec3 tr\u00e1nh b\u1ecb ch\u00e1y.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 l\u00ean \u0111\u1ebfn 1 m\/s; t\u1ed1c \u0111\u1ed9 th\u1ea5p \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t.<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-3,5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-6 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n80\u00b0C trong 4 gi\u1edd; \u0111\u1ed9 \u1ea9m <0,25%<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 10%<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0,7-2,0%; 0,4-0,7% v\u1edbi s\u1ee3i th\u1ee7y tinh 30%<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\n\u0110i\u1ec3m, ti\u1ec1m \u1ea9n, h\u00ecnh qu\u1ea1t, tr\u1ef1c ti\u1ebfp; c\u00e1c h\u1ed1c k\u00edn cho d\u00f2ng ch\u1ea3y l\u1ea1nh; \u0111\u01b0\u1eddng d\u1eabn n\u00f3ng v\u1edbi \u0111i\u1ec1u khi\u1ec3n v\u00f2ng k\u00edn<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nKh\u00f4ng c\u1ea7n v\u1ec7 sinh; th\u1eddi gian l\u01b0u l\u1ea1i tr\u00ean b\u1ec1 m\u1eb7t tan ch\u1ea3y l\u00ean \u0111\u1ebfn 20 ph\u00fat.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nTr\u1ee5c v\u00edt ti\u00eau chu\u1ea9n v\u1edbi kh\u1ea3 n\u0103ng h\u00f3a d\u1ebbo cao; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng; th\u00e2n l\u01b0\u1ee1ng kim lo\u1ea1i cho v\u1eadt li\u1ec7u ch\u1ee9a s\u1ee3i th\u1ee7y tinh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

L\u00e0m ngu\u1ed9i t\u1eeb t\u1eeb gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc. \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i c\u00f3 ch\u1ee9a s\u1ee3i th\u1ee7y tinh, nhi\u1ec7t \u0111\u1ed9 khu\u00f4n cao h\u01a1n s\u1ebd gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t. B\u1ea3o qu\u1ea3n trong h\u1ed9p k\u00edn n\u01b0\u1edbc.<\/p>\n<\/section>\n

\n

Polybutylene Terephthalate (PBT)<\/h2>\n

PBT l\u00e0 m\u1ed9t lo\u1ea1i polyester b\u00e1n tinh th\u1ec3 c\u00f3 kh\u1ea3 n\u0103ng c\u00e1ch \u0111i\u1ec7n v\u00e0 kh\u00e1ng h\u00f3a ch\u1ea5t tuy\u1ec7t v\u1eddi. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u0111\u1ea7u n\u1ed1i \u0111i\u1ec7n v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn \u00f4 t\u00f4. Qu\u00e1 tr\u00ecnh gia c\u00f4ng ch\u1ec9 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 h\u1eb9p \u0111\u1ec3 tr\u00e1nh l\u00e0m gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m.<\/p>\n

\n
\n
\n
<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 50-70\u00b0C; V\u00f9ng 1: 230-250\u00b0C; V\u00f9ng 2: 240-260\u00b0C; V\u00f9ng 3-5: 250-260\u00b0C; V\u00f2i phun: 250-260\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n250-260\u00b0C; ph\u1ea1m vi h\u1eb9p, d\u01b0\u1edbi 240\u00b0C ng\u01b0ng t\u1ee5, tr\u00ean 270\u00b0C ph\u00e2n h\u1ee7y<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n60-80\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n100-140 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n50-60% \u00e1p su\u1ea5t phun<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-10 MPa; tr\u00e1nh nhi\u1ec7t do ma s\u00e1t.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nNhi\u1ec7t \u0111\u1ed9 cao do qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c nhanh; h\u1ec7 th\u1ed1ng th\u00f4ng gi\u00f3 t\u1ed1t gi\u00fap ng\u0103n ng\u1eeba ch\u00e1y.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 l\u00ean \u0111\u1ebfn 0,5 m\/s<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-3,5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-5 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n120\u00b0C trong 4 gi\u1edd<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\n\u0110\u1ea1t ti\u00eau chu\u1ea9n ch\u1ed1ng ch\u00e1y l\u00ean \u0111\u1ebfn 10%; kh\u00f4ng ch\u1ed1ng ch\u00e1y \u0111\u1ea1t ti\u00eau chu\u1ea9n 20%; \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ea5y kh\u00f4 tr\u01b0\u1edbc, kh\u00f4ng b\u1ecb ph\u00e2n h\u1ee7y.<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n1,4-2,0%; 0,4-0,6% v\u1edbi s\u1ee3i th\u1ee7y tinh 30%; nhi\u1ec7t \u0111\u1ed9 khu\u00f4n cao h\u01a1n l\u00e0m t\u0103ng \u0111\u1ed9 co ng\u00f3t.<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nTr\u00e1nh phun tr\u1ef1c ti\u1ebfp\/\u0111i\u1ec3m v\u00e0o c\u00e1c s\u1ea3n ph\u1ea9m c\u00f3 ch\u1ee9a th\u1ee7y tinh; h\u1ec7 th\u1ed1ng d\u1eabn nhi\u1ec7t c\u00f3 \u0111i\u1ec1u khi\u1ec3n v\u00f2ng k\u00edn.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nT\u1eaft m\u00e1y gia nhi\u1ec7t; \u00e9p \u0111\u00f9n cho \u0111\u1ebfn khi h\u1ebft nguy\u00ean li\u1ec7u; kh\u1edfi \u0111\u1ed9ng l\u1ea1i v\u1edbi qu\u00e1 tr\u00ecnh x\u1ea3 cho \u0111\u1ebfn khi kh\u00f4ng c\u00f2n b\u1ecdt kh\u00ed.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Gi\u1edbi h\u1ea1n th\u1eddi gian l\u01b0u tr\u00fa d\u01b0\u1edbi 0,5 ph\u00fat \u0111\u1ec3 tr\u00e1nh qu\u00e1 nhi\u1ec7t. \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u ch\u1ed1ng ch\u00e1y, c\u1ea7n gi\u1ea3m t\u1ef7 l\u1ec7 thu h\u1ed3i. T\u1ed1c \u0111\u1ed9 k\u1ebft tinh cao \u0111\u00f2i h\u1ecfi t\u1ed1c \u0111\u1ed9 chi\u1ebft r\u00f3t nhanh.<\/p>\n<\/section>\n

\n

Polyethylene Terephthalate (PET)<\/h2>\n

PET l\u00e0 m\u1ed9t lo\u1ea1i polyester b\u00e1n tinh th\u1ec3 c\u00f3 \u0111\u1ed9 b\u1ec1n cao v\u00e0 \u0111\u1eb7c t\u00ednh ch\u1eafn kh\u00ed t\u1ed1t. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u1ea3n xu\u1ea5t chai l\u1ecd v\u00e0 s\u1ee3i. Qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t \u0111\u00f2i h\u1ecfi ph\u1ea3i s\u1ea5y kh\u00f4 nghi\u00eam ng\u1eb7t \u0111\u1ec3 tr\u00e1nh b\u1ecb th\u1ee7y ph\u00e2n.<\/p>\n

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\n
\n
<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 50-70\u00b0C; V\u00f9ng 1-2: 240-260\u00b0C; V\u00f9ng 3-5: 250-290\u00b0C; V\u00f2i phun: 250-290\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n270-280\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n120-140\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n\u0110\u1ed9 b\u1ec1n l\u00ean \u0111\u1ebfn 160 MPa \u0111\u1ed1i v\u1edbi c\u00e1c ti\u1ebft di\u1ec7n m\u1ecfng.<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n\u00c1p su\u1ea5t phun 50-70%; \u0111i\u1ec1u ch\u1ec9nh th\u1eddi gian \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t.<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-10 MPa; tr\u00e1nh nhi\u1ec7t do ma s\u00e1t.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\n\u0110\u1ed9 c\u1ee9ng cao do \u0111\u00f4ng \u0111\u1eb7c nhanh; kh\u1ea3 n\u0103ng tho\u00e1t kh\u00ed t\u1ed1t.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 l\u00ean \u0111\u1ebfn 0,5 m\/s<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-3,5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-5 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n120\u00b0C trong 4 gi\u1edd<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 20%; \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ea5y kh\u00f4 tr\u01b0\u1edbc, kh\u00f4ng b\u1ecb h\u01b0 h\u1ecfng.<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n1.2-2.0%; 0.4% v\u1edbi s\u1ee3i th\u1ee7y tinh 30%; thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o nhi\u1ec7t \u0111\u1ed9 khu\u00f4n v\u00e0 th\u1eddi gian gi\u1eef.<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nB\u1ea5t k\u1ef3 ti\u00eau chu\u1ea9n n\u00e0o; h\u1ec7 th\u1ed1ng d\u1eabn nhi\u1ec7t n\u00f3ng v\u1edbi \u0111i\u1ec1u khi\u1ec3n v\u00f2ng k\u00edn.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\n\u0110\u00f3ng n\u1eafp m\u00e1y gia nhi\u1ec7t; \u00e9p \u0111\u00f9n cho \u0111\u1ebfn khi h\u1ebft v\u1eadt li\u1ec7u; l\u00e0m s\u1ea1ch b\u1eb1ng PE ho\u1eb7c PP n\u1ebfu thay \u0111\u1ed5i v\u1eadt li\u1ec7u.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n cao th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh k\u1ebft tinh. Gi\u1edbi h\u1ea1n th\u1eddi gian gi\u1eef khu\u00f4n d\u01b0\u1edbi 0,5 ph\u00fat. \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u kh\u00f4ng k\u1ebft tinh, th\u1eddi gian gi\u1eef l\u00e2u h\u01a1n s\u1ebd l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp.<\/p>\n<\/section>\n

\n

Polycarbonate (PC)<\/h2>\n

PC l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u00f3 \u0111\u1ed9 b\u1ec1n va \u0111\u1eadp cao v\u00e0 \u0111\u1ed9 trong su\u1ed1t t\u1ed1t. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u1ea5u k\u00ednh, m\u0169 b\u1ea3o hi\u1ec3m v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. Qu\u00e1 tr\u00ecnh gia c\u00f4ng \u0111\u00f2i h\u1ecfi \u00e1p su\u1ea5t cao do \u0111\u1ed9 nh\u1edbt cao.<\/p>\n

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<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 \u0111\u1ea7u v\u00e0o: 70-90\u00b0C; V\u00f9ng 1: 230-270\u00b0C; V\u00f9ng 2: 260-310\u00b0C; V\u00f9ng 3-4: 280-310\u00b0C; V\u00f9ng 5: 290-320\u00b0C; Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea7u phun: 300-320\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n250-310\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n80-110\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n130-180 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n\u00c1p su\u1ea5t phun 40-60%; th\u1ea5p h\u01a1n \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t.<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n10-15 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nD\u1ef1a tr\u00ean chi\u1ec1u d\u00e0i v\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a d\u00f2ng ch\u1ea3y; t\u1ed1c \u0111\u1ed9 nhanh cho th\u00e0nh m\u1ecfng, t\u1ed1c \u0111\u1ed9 ch\u1eadm nhi\u1ec1u giai \u0111o\u1ea1n \u0111\u1ec3 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 l\u00ean \u0111\u1ebfn 0,6 m\/s; \u0111i\u1ec1u ch\u1ec9nh qu\u00e1 tr\u00ecnh h\u00f3a d\u1ebbo sao cho ph\u00f9 h\u1ee3p v\u1edbi qu\u00e1 tr\u00ecnh l\u00e0m ngu\u1ed9i.<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-3,5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-5 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n120\u00b0C trong 3 gi\u1edd; \u0111\u1ed9 \u1ea9m <0,02%<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 20%<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0,6-0,8%; 0,2-0,4% c\u00f3 k\u00ednh<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\n\u0110\u01b0\u1eddng k\u00ednh c\u1ed5ng 60-70%, \u0111\u1ed9 d\u00e0y th\u00e0nh t\u1ed1i \u0111a, t\u1ed1i thi\u1ec3u 1,2 mm; \u0111i\u1ec3m d\u00e0nh cho c\u00e1c th\u00e0nh nh\u1ecf \u0111\u1ed3ng nh\u1ea5t.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nS\u1ea5y kh\u00f4 b\u1eb1ng kh\u00ed n\u00e9n \u0111\u1ebfn 200\u00b0C; l\u00e0m s\u1ea1ch b\u1eb1ng PE c\u00f3 \u0111\u1ed9 nh\u1edbt cao, th\u00e1o v\u00edt v\u00e0 ch\u00e0 s\u1ea1ch.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

C\u1ea7n s\u1eed d\u1ee5ng v\u00edt c\u00f3 momen xo\u1eafn cao \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 nh\u1edbt. L\u1ef1c si\u1ebft th\u1ea5p h\u01a1n gi\u00fap gi\u1ea3m \u1ee9ng su\u1ea5t. Lau kh\u00f4 k\u1ef9 \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 trong su\u1ed1t quang h\u1ecdc.<\/p>\n<\/section>\n

\n

Acrylonitrile Butadiene Styrene (ABS)<\/h2>\n

ABS l\u00e0 m\u1ed9t lo\u1ea1i terpolymer v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp v\u00e0 b\u1ec1 m\u1eb7t ho\u00e0n thi\u1ec7n t\u1ed1t. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong n\u1ed9i th\u1ea5t \u00f4 t\u00f4 v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed. Qu\u00e1 tr\u00ecnh gia c\u00f4ng nh\u1eb1m m\u1ee5c \u0111\u00edch t\u1ea1o ra b\u1ec1 m\u1eb7t b\u00f3ng cao v\u00e0 \u0111\u01b0\u1eddng h\u00e0n ch\u1eafc ch\u1eafn.<\/p>\n

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<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 40-60\u00b0C; V\u00f9ng 1: 160-180\u00b0C; V\u00f9ng 2: 180-230\u00b0C; V\u00f9ng 3-5: 210-260\u00b0C; Nhi\u1ec7t \u0111\u1ed9 v\u00f2i phun: 210-260\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n220-250\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n40-80\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n100-150 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n\u00c1p su\u1ea5t phun 30-60%; th\u1eddi gian ng\u1eafn<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-15 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nNhi\u1ec1u giai \u0111o\u1ea1n t\u1eeb ch\u1eadm \u0111\u1ebfn nhanh \u0111\u1ec3 t\u1ea1o \u0111\u1ed9 b\u00f3ng, \u0111\u01b0\u1eddng h\u00e0n t\u1ed1i thi\u1ec3u; th\u00f4ng gi\u00f3 t\u1ea1i c\u00e1c \u0111i\u1ec3m giao nhau c\u1ee7a quy tr\u00ecnh.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 l\u00ean \u0111\u1ebfn 0,6 m\/s; t\u1ed1c \u0111\u1ed9 th\u1ea5p \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t.<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-4D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-8 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\nT\u00f9y ch\u1ecdn; \u1ee6 \u1edf 80\u00b0C trong 3 gi\u1edd n\u1ebfu c\u00f2n \u1ea9m \u0111\u1ec3 tr\u00e1nh v\u1ec7t ho\u1eb7c b\u1ecdt kh\u00ed.<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 30%; kh\u00f4ng b\u1ecb suy gi\u1ea3m<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0.4-0.7%<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nC\u1ed5ng phun \u0111i\u1ec3m, h\u1ec7 th\u1ed1ng d\u1eabn nhi\u1ec7t n\u00f3ng; \u0111\u1ed9 d\u00e0y th\u00e0nh t\u1ed1i thi\u1ec3u 0,7 mm<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nKh\u00f4ng c\u1ea7n v\u1ec7 sinh \u0111\u1eb7c bi\u1ec7t<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

C\u00f4ng ngh\u1ec7 phun nhi\u1ec1u giai \u0111o\u1ea1n gi\u00fap c\u1ea3i thi\u1ec7n b\u1ec1 m\u1eb7t v\u00e0 \u0111\u1ed9 b\u1ec1n m\u1ed1i h\u00e0n. L\u00e0m kh\u00f4 n\u1ebfu b\u1ecb \u1ea9m \u0111\u1ec3 tr\u00e1nh t\u1ea1o khuy\u1ebft t\u1eadt. Th\u00edch h\u1ee3p cho c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c m\u1ea1.<\/p>\n<\/section>\n

\n

Acrylonitrile Butadiene Styrene\/Polycarbonate (ABS\/PC)<\/h2>\n

H\u1ed7n h\u1ee3p ABS\/PC k\u1ebft h\u1ee3p \u0111\u1ed9 b\u1ec1n c\u1ee7a ABS v\u1edbi kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t c\u1ee7a PC. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong ng\u00e0nh \u00f4 t\u00f4 v\u00e0 \u0111i\u1ec7n t\u1eed. Qu\u00e1 tr\u00ecnh gia c\u00f4ng gi\u00fap c\u00e2n b\u1eb1ng c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a h\u1ed7n h\u1ee3p.<\/p>\n

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\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 50-70\u00b0C; V\u00f9ng 1: 230-250\u00b0C; V\u00f9ng 2-5: 250-270\u00b0C; V\u00f2i phun: 250-270\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n260-270\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n70-90\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n80-150 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n\u00c1p su\u1ea5t phun 40-50%; th\u1ea5p \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u1ee9ng su\u1ea5t.<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-10 MPa; tr\u00e1nh nhi\u1ec7t do ma s\u00e1t.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nTrung b\u00ecnh; nhi\u1ec1u giai \u0111o\u1ea1n, t\u1eeb ch\u1eadm \u0111\u1ebfn nhanh \u1edf m\u1ed9t s\u1ed1 \u0111o\u1ea1n.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nL\u00ean \u0111\u1ebfn 0,4 m\/s<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n1.0-3.0D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-5 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n80\u00b0C trong 4 gi\u1edd<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 20%; \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ea5y kh\u00f4 tr\u01b0\u1edbc, kh\u00f4ng b\u1ecb h\u01b0 h\u1ecfng.<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\nG\u1ea7n nh\u01b0 \u0111\u1eb3ng h\u01b0\u1edbng 0,5-0,7%; 0,2-0,4% v\u1edbi th\u1ee7y tinh<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nB\u1ea5t k\u1ef3 ti\u00eau chu\u1ea9n n\u00e0o; h\u1ec7 th\u1ed1ng d\u1eabn nhi\u1ec7t n\u00f3ng v\u1edbi \u0111i\u1ec1u khi\u1ec3n v\u00f2ng k\u00edn.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nGia nhi\u1ec7t g\u1ea7n; \u00e9p \u0111\u00f9n \u0111\u1ec3 l\u00e0m s\u1ea1ch th\u00f9ng.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n (\u0111\u01b0\u1eddng k\u00ednh 50 mm); n\u00e9n th\u1ea5p cho k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Gi\u1edbi h\u1ea1n th\u1eddi gian l\u01b0u gi\u1eef d\u01b0\u1edbi 6 ph\u00fat. \u0110\u1ed1i v\u1edbi v\u00edt c\u1ee1 l\u1edbn, s\u1eed d\u1ee5ng h\u00ecnh d\u1ea1ng c\u00f3 \u0111\u1ed9 n\u00e9n th\u1ea5p. L\u00fd t\u01b0\u1edfng cho c\u00e1c b\u1ed9 ph\u1eadn y\u00eau c\u1ea7u kh\u1ea3 n\u0103ng ch\u1ecbu va \u0111\u1eadp v\u00e0 ch\u1ecbu nhi\u1ec7t.<\/p>\n<\/section>\n

\n

Styrene Acrylonitrile (SAN)<\/h2>\n

SAN l\u00e0 m\u1ed9t lo\u1ea1i copolymer v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u00f3 \u0111\u1ed9 trong su\u1ed1t v\u00e0 \u0111\u1ed9 c\u1ee9ng cao. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u1ed3 gia d\u1ee5ng v\u00e0 m\u1ef9 ph\u1ea9m. Quy tr\u00ecnh s\u1ea3n xu\u1ea5t t\u1eadp trung v\u00e0o ph\u01b0\u01a1ng ph\u00e1p \u00e9p phun nhanh \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 b\u00f3ng v\u00e0 \u0111\u1ed9 b\u1ec1n cao.<\/p>\n

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\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 30-50\u00b0C; V\u00f9ng 1: 160-180\u00b0C; V\u00f9ng 2: 180-230\u00b0C; V\u00f9ng 3-4: 210-260\u00b0C; V\u00f9ng 5: 220-260\u00b0C; Nhi\u1ec7t \u0111\u1ed9 v\u00f2i phun: 220-260\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n220-250\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n40-80\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n100-150 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n\u00c1p su\u1ea5t phun 30-40%; th\u1eddi gian ng\u1eafn<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-15 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nNhanh ch\u00f3ng t\u1ea1o \u0111\u1ed9 b\u00f3ng, m\u00e0u s\u1eafc, gi\u1ea3m thi\u1ec3u \u0111\u01b0\u1eddng h\u00e0n.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 l\u00ean \u0111\u1ebfn 0,6 m\/s; th\u1ea5p \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t; m\u00f4-men xo\u1eafn trung b\u00ecnh<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-4,0D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-8 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n\u1ee6 \u1edf 80\u00b0C trong 4 gi\u1edd n\u1ebfu \u1ea9m<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\n\u0110\u1ea1t chu\u1ea9n 30%; kh\u00f4ng suy gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng.<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0.4-0.7%<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nB\u1ea5t k\u1ef3 h\u1ec7 th\u1ed1ng d\u1eabn nhi\u1ec7t ti\u00eau chu\u1ea9n v\u00e0 n\u00f3ng n\u00e0o<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nKh\u00f4ng c\u1ea7n v\u1ec7 sinh \u0111\u1eb7c bi\u1ec7t<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

L\u00e0m kh\u00f4 \u0111\u1ec3 tr\u00e1nh c\u00e1c khuy\u1ebft t\u1eadt b\u1ec1 m\u1eb7t. Phun nhanh gi\u00fap t\u0103ng t\u00ednh th\u1ea9m m\u1ef9. Th\u00edch h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng trong su\u1ed1t.<\/p>\n<\/section>\n

\n

Polymethyl methacrylate (PMMA)<\/h2>\n

PMMA l\u00e0 m\u1ed9t lo\u1ea1i polymer v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u00f3 \u0111\u1ed9 trong su\u1ed1t quang h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft tuy\u1ec7t v\u1eddi. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong th\u1ea5u k\u00ednh v\u00e0 m\u00e0n h\u00ecnh. Qu\u00e1 tr\u00ecnh gia c\u00f4ng \u0111\u00f2i h\u1ecfi \u00e1p su\u1ea5t cao v\u00e0 t\u1ed1c \u0111\u1ed9 ch\u1eadm \u0111\u1ed1i v\u1edbi c\u00e1c chi ti\u1ebft d\u00e0y.<\/p>\n

\n
\n
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<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 60-80\u00b0C; V\u00f9ng 1: 150-200\u00b0C; V\u00f9ng 2: 180-220\u00b0C; V\u00f9ng 3-5: 200-250\u00b0C; V\u00f2i phun: 200-250\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n220-250\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n40-80\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n100-170 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n\u00c1p su\u1ea5t phun 40-60%; th\u1eddi gian phun d\u00e0i cho c\u00e1c chi ti\u1ebft d\u00e0y (2-3 ph\u00fat)<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n10-30 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nNhi\u1ec7t \u0111\u1ed9 th\u1ea5p cho s\u1ea3n ph\u1ea9m \u0111\u1eb7c; nhi\u1ec1u giai \u0111o\u1ea1n t\u1eeb ch\u1eadm \u0111\u1ebfn nhanh g\u1ea7n c\u1eeda r\u00f3t \u0111\u1ec3 \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t nh\u1ea5t.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 l\u00e0m m\u00e1t ch\u1eadm, ph\u00f9 h\u1ee3p v\u1edbi t\u1ed1c \u0111\u1ed9 l\u00e0m m\u00e1t th\u00f4ng th\u01b0\u1eddng; t\u1ed1i \u0111a 0,6 m\/s.<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-3,5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-6 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n80\u00b0C trong 4 gi\u1edd; kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 cao<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\n\u0110\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng n\u1ebfu \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ea5y kh\u00f4 v\u00e0 nhu\u1ed9m m\u00e0u; ch\u1ea5t l\u01b0\u1ee3ng quang h\u1ecdc b\u1ecb gi\u1ea3m.<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0.3-0.7%<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\nC\u1ed5ng l\u1edbn; m\u1eb7t c\u1eaft ngang ng\u1eafn, tr\u00f2n ho\u1eb7c vu\u00f4ng; tr\u00e1nh c\u00e1c c\u1ea1nh s\u1eafc nh\u1ecdn.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nKh\u00f4ng c\u1ea7n v\u1ec7 sinh<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\n\u1ed0c v\u00edt ti\u00eau chu\u1ea9n; chuy\u00ean d\u1ee5ng cho quang h\u1ecdc; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\u00c1p su\u1ea5t ng\u01b0\u1ee3c cao gi\u00fap tr\u00e1nh t\u1ea1o kho\u1ea3ng tr\u1ed1ng. Lau kh\u00f4 k\u1ef9 \u0111\u1ec3 c\u00f3 \u0111\u1ed9 trong su\u1ed1t. \u0110\u1ed1i v\u1edbi th\u1ea5u k\u00ednh, gi\u1eef l\u00e2u \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t.<\/p>\n<\/section>\n

\n

Polyoxymethylene (POM)<\/h2>\n

POM l\u00e0 m\u1ed9t lo\u1ea1i acetal b\u00e1n tinh th\u1ec3 c\u00f3 ma s\u00e1t th\u1ea5p v\u00e0 \u0111\u1ed9 c\u1ee9ng cao. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong b\u00e1nh r\u0103ng v\u00e0 \u1ed1c v\u00edt. Qu\u00e1 tr\u00ecnh gia c\u00f4ng t\u1eadp trung v\u00e0o \u0111\u1ed9 co ng\u00f3t \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 t\u1ea1o ra c\u00e1c chi ti\u1ebft ch\u00ednh x\u00e1c.<\/p>\n

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\n
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<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 40-50\u00b0C; V\u00f9ng 1: 160-180\u00b0C; V\u00f9ng 2: 180-205\u00b0C; V\u00f9ng 3: 185-205\u00b0C; V\u00f9ng 4-5: 195-215\u00b0C; Nhi\u1ec7t \u0111\u1ed9 v\u00f2i phun: 200-250\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n205-215\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n40-120\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n100-150 MPa; 100 cho v\u1eadt li\u1ec7u d\u00e0y, 150 cho v\u1eadt li\u1ec7u m\u1ecfng.<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n80-100 MPa; chi\u1ec1u d\u00e0i t\u1ed1i thi\u1ec3u \u0111\u1ec3 gi\u1ea3m \u0111\u1ed9 co ng\u00f3t (~30% chu k\u1ef3)<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-10 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nTrung b\u00ecnh; th\u1ea5p n\u1ebfu nhi\u1ec7t \u0111\u1ed9 khu\u00f4n\/n\u00f3ng ch\u1ea3y th\u1ea5p \u0111\u1ec3 tr\u00e1nh r\u1ed7 b\u1ec1 m\u1eb7t.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 l\u00ean \u0111\u1ebfn 0,7 m\/s; ph\u00f9 h\u1ee3p v\u1edbi h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t; m\u00f4-men xo\u1eafn trung b\u00ecnh<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-3,5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n2-6 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\nKh\u00f4ng b\u1eaft bu\u1ed9c; 100\u00b0C trong 4 gi\u1edd n\u1ebfu \u1ea9m<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\n100% d\u00f9ng cho m\u1ee5c \u0111\u00edch chung; 20% d\u00f9ng cho m\u1ee5c \u0111\u00edch ch\u00ednh x\u00e1c<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n~2%; d\u1eebng l\u1ea1i sau 24 gi\u1edd<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\n\u0110i\u1ec3m d\u00e0nh cho \u0111\u1ed3ng ph\u1ee5c nh\u1ecf; th\u00e0nh t\u1ed1i \u0111a 50-60%; ch\u1ed1ng ch\u01b0\u1edbng ng\u1ea1i v\u1eadt; c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng d\u1eabn nhi\u1ec7t.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nT\u1eaft b\u1ebfp 5-10 ph\u00fat tr\u01b0\u1edbc khi k\u1ebft th\u00fac; kh\u00f4ng c\u00f3 \u00e1p su\u1ea5t ng\u01b0\u1ee3c, l\u00e0m r\u1ed7ng; l\u00e0m s\u1ea1ch b\u1eb1ng PA ho\u1eb7c PC, sau \u0111\u00f3 b\u1eb1ng PE.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

T\u1ed1i \u01b0u h\u00f3a vi\u1ec7c gi\u1eef ph\u00f4i \u0111\u1ec3 \u0111\u1ea1t k\u00edch th\u01b0\u1edbc \u1ed5n \u0111\u1ecbnh. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c, h\u00e3y theo d\u00f5i tr\u1ecdng l\u01b0\u1ee3ng chi ti\u1ebft theo ti\u00eau chu\u1ea9n 100% \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u0111\u1ed9 co ng\u00f3t. Th\u00f4ng gi\u00f3 t\u1ed1t.<\/p>\n<\/section>\n

\n

Cellulose Acetate (CA)<\/h2>\n

CA l\u00e0 m\u1ed9t lo\u1ea1i polymer v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y sinh h\u1ecdc, c\u00f3 \u0111\u1ed9 trong su\u1ed1t v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed1t. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong g\u1ecdng k\u00ednh v\u00e0 c\u00e1c d\u1ee5ng c\u1ee5. Qu\u00e1 tr\u00ecnh gia c\u00f4ng nh\u1ea1y c\u1ea3m v\u1edbi \u0111\u1ed9 \u1ea9m v\u00e0 nhi\u1ec7t \u0111\u1ed9.<\/p>\n

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\n
\n
<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 30-40\u00b0C; V\u00f9ng 1: 140-160\u00b0C; V\u00f9ng 2: 160-185\u00b0C; V\u00f9ng 3-5: 170-200\u00b0C; Nhi\u1ec7t \u0111\u1ed9 v\u00f2i phun: 170-200\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n200-210\u00b0C; n\u1ebfu nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao th\u00ec m\u00e0u s\u1eafc s\u1ebd thay \u0111\u1ed5i, n\u1ebfu nhi\u1ec7t \u0111\u1ed9 th\u1ea5p th\u00ec \u0111\u1ed9 b\u00f3ng s\u1ebd gi\u1ea3m.<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n40-80\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n80-120 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n\u00c1p su\u1ea5t phun 40-100%; chi\u1ec1u d\u00e0i l\u1edbn \u0111\u1ec3 tr\u00e1nh \u1ee9ng su\u1ea5t.<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n5-10 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nNhanh cho ng\u01b0\u1eddi g\u1ea7y; ch\u1eadm cho ng\u01b0\u1eddi d\u00e0y<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 trung b\u00ecnh; l\u00ean \u0111\u1ebfn 0,6 m\/s<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n1,5-3,5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n3-8 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n70\u00b0C trong 3 gi\u1edd<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\nL\u00ean \u0111\u1ebfn 20%; \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ea5y kh\u00f4 tr\u01b0\u1edbc, kh\u00f4ng b\u1ecb h\u01b0 h\u1ecfng.<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0,4-0,7%; d\u1ecb h\u01b0\u1edbng (0,4% d\u00f2ng ch\u1ea3y, 0,6-0,7% ngang)<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\n\u0110i\u1ec3m\/\u1ea9n; b\u1ed9 ph\u1eadn \u0111\u1ea9y b\u1eb1ng l\u00f2 xo \u0111\u1ec3 tr\u00e1nh b\u1eafn t\u00f3e.<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nGia nhi\u1ec7t s\u00e1t; kh\u00f4ng c\u00f3 \u00e1p su\u1ea5t ng\u01b0\u1ee3c, \u00e9p \u0111\u00f9n cho \u0111\u1ebfn khi h\u1ebft s\u1ea3n ph\u1ea9m.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\n\u1ed0c v\u00edt ti\u00eau chu\u1ea9n; lo\u1ea1i \u0111\u1eb7c bi\u1ec7t n\u1ebfu c\u1ea7n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

\u0110i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 ph\u00f9 h\u1ee3p v\u1edbi \u0111\u1ed9 d\u00e0y th\u00e0nh t\u01b0\u1eddng. S\u1ea5y kh\u00f4 \u0111\u1ec3 tr\u00e1nh t\u1ea1o ra c\u00e1c khuy\u1ebft t\u1eadt. Th\u00edch h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng sinh h\u1ecdc.<\/p>\n<\/section>\n

\n

Polyphenylene Oxide (PPO)<\/h2>\n

PPO l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a k\u1ef9 thu\u1eadt v\u00f4 \u0111\u1ecbnh h\u00ecnh c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc t\u1ed1t. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00e1y b\u01a1m v\u00e0 van. Qu\u00e1 tr\u00ecnh gia c\u00f4ng \u0111\u00f2i h\u1ecfi kh\u1ea3 n\u0103ng ch\u1ea3y t\u1ed1t \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn d\u00e0i.<\/p>\n

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<\/div>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nGi\u00e1 tr\u1ecb<\/th>\n<\/tr>\n<\/thead>\n
Nhi\u1ec7t \u0111\u1ed9 th\u00f9ng<\/td>\nNhi\u1ec7t \u0111\u1ed9 c\u1ea5p li\u1ec7u: 40-60\u00b0C; V\u00f9ng 1: 240-280\u00b0C; V\u00f9ng 2-5: 280-300\u00b0C; V\u00f2i phun: 280-300\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y<\/td>\n270-290\u00b0C<\/td>\n<\/tr>\n
Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n<\/td>\n80-120\u00b0C<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t phun<\/td>\n100-140 MPa<\/td>\n<\/tr>\n
Gi\u1eef \u00e1p su\u1ea5t<\/td>\n40-60% \u00e1p su\u1ea5t phun<\/td>\n<\/tr>\n
\u00c1p su\u1ea5t ng\u01b0\u1ee3c<\/td>\n3-10 MPa<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 phun<\/td>\nNhanh ch\u00f3ng \u0111\u1ed1i v\u1edbi d\u00f2ng ch\u1ea3y d\u00e0i; \u0111\u1ea3m b\u1ea3o th\u00f4ng h\u01a1i.<\/td>\n<\/tr>\n
T\u1ed1c \u0111\u1ed9 v\u00edt<\/td>\nT\u1ed1c \u0111\u1ed9 trung b\u00ecnh; l\u00ean \u0111\u1ebfn 0,6 m\/s<\/td>\n<\/tr>\n
\u0110o n\u00e9t<\/td>\n0,5-3,5D<\/td>\n<\/tr>\n
C\u00e1i \u0111\u1ec7m<\/td>\n3-6 mm<\/td>\n<\/tr>\n
S\u1ea5y s\u01a1 b\u1ed9<\/td>\n110\u00b0C trong 2 gi\u1edd<\/td>\n<\/tr>\n
T\u1ef7 l\u1ec7 ph\u1ee5c h\u1ed3i<\/td>\n\u0110\u01b0\u1ee3c ph\u00e9p n\u1ebfu kh\u00f4ng c\u00f3 s\u1ef1 suy gi\u1ea3m ch\u1ea5t l\u01b0\u1ee3ng.<\/td>\n<\/tr>\n
S\u1ef1 co ng\u00f3t<\/td>\n0.8-1.5%<\/td>\n<\/tr>\n
H\u1ec7 th\u1ed1ng c\u1ed5ng<\/td>\n\u0110\u1ea7u phun \u0111i\u1ec3m\/ch\u1eadm cho lo\u1ea1i nh\u1ecf; \u0111\u1ea7u phun tr\u1ef1c ti\u1ebfp\/qu\u1ea1t cho lo\u1ea1i l\u1edbn h\u01a1n; \u0111\u1ea7u phun n\u00f3ng<\/td>\n<\/tr>\n
T\u1eaft m\u00e1y<\/td>\nH\u1ec7 th\u1ed1ng gia nhi\u1ec7t g\u1ea7n; \u00e1p su\u1ea5t ng\u01b0\u1ee3c th\u1ea5p, chu k\u1ef3 \u0111\u1ecbnh l\u01b0\u1ee3ng cho \u0111\u1ebfn khi h\u1ebft h\u00e0ng.<\/td>\n<\/tr>\n
Thi\u1ebft b\u1ecb<\/td>\nV\u00edt ti\u00eau chu\u1ea9n; v\u00f2ng ki\u1ec3m tra, v\u00f2i phun th\u1eb3ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Kh\u1ea3 n\u0103ng tho\u00e1t kh\u00ed t\u1ed1t cho d\u00f2ng ch\u1ea3y d\u00e0i. Kh\u00f4 r\u00e1o \u0111\u1ec3 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng th\u1ee7y ph\u00e2n. L\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n<\/section>\n

\n

\u1ee8ng d\u1ee5ng th\u1ef1c ti\u1ec5n v\u00e0 h\u01b0\u1edbng d\u1eabn<\/h2>\n

C\u00e1c th\u00f4ng s\u1ed1 \u00e9p phun ph\u1ea3i \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p v\u1edbi t\u1eebng \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3. \u0110\u1ed1i v\u1edbi bao b\u00ec s\u1eed d\u1ee5ng HDPE ho\u1eb7c PP, t\u1ed1c \u0111\u1ed9 cao v\u00e0 b\u1ed9 t\u00edch \u00e1p \u0111\u1ea3m b\u1ea3o vi\u1ec7c \u0111\u1ed5 \u0111\u1ea7y th\u00e0nh m\u1ecfng. Trong ng\u00e0nh \u00f4 t\u00f4 s\u1eed d\u1ee5ng PA66 ho\u1eb7c PBT, nhi\u1ec7t \u0111\u1ed9 khu\u00f4n cao gi\u00fap t\u0103ng c\u01b0\u1eddng c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc. \u0110\u1ed1i v\u1edbi quang h\u1ecdc s\u1eed d\u1ee5ng PMMA ho\u1eb7c PC, qu\u00e1 tr\u00ecnh s\u1ea5y kh\u00f4 nghi\u00eam ng\u1eb7t v\u00e0 t\u1ed1c \u0111\u1ed9 ch\u1eadm gi\u00fap gi\u1ea3m thi\u1ec3u khuy\u1ebft t\u1eadt.<\/p>\n

C\u00e1c h\u01b0\u1edbng d\u1eabn bao g\u1ed3m gi\u00e1m s\u00e1t \u0111\u1ed9 \u1ea9m \u0111\u1ed1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u h\u00fat \u1ea9m nh\u01b0 PA v\u00e0 PET, s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n v\u00f2ng k\u00edn cho c\u00e1c \u0111\u01b0\u1eddng d\u1eabn nhi\u1ec7t v\u00e0 ti\u1ebfn h\u00e0nh thi\u1ebft k\u1ebf th\u00ed nghi\u1ec7m (DOE) \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a. C\u00e1c bi\u1ec7n ph\u00e1p an to\u00e0n bao g\u1ed3m th\u00f4ng gi\u00f3 \u0111\u00fang c\u00e1ch \u0111\u1ec3 tr\u00e1nh t\u00edch t\u1ee5 kh\u00ed v\u00e0 t\u00ednh b\u1ec1n v\u1eefng th\u00f4ng qua vi\u1ec7c t\u1ed1i \u0111a h\u00f3a t\u1ef7 l\u1ec7 thu h\u1ed3i m\u00e0 kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n

    \n
  • H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi c\u00e1c khuy\u1ebfn ngh\u1ecb t\u1eeb nh\u00e0 cung c\u1ea5p v\u1eadt li\u1ec7u v\u00e0 \u0111i\u1ec1u ch\u1ec9nh d\u1ef1a tr\u00ean k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m.<\/li>\n
  • S\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t quy tr\u00ecnh \u0111\u1ec3 ki\u1ec3m so\u00e1t th\u00f4ng s\u1ed1 theo th\u1eddi gian th\u1ef1c.<\/li>\n
  • \u0110\u1ea3m b\u1ea3o hi\u1ec7u ch\u1ec9nh m\u00e1y \u0111\u1ec3 chu tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng nh\u1ea5t qu\u00e1n.<\/li>\n
  • Tr\u00e1nh \u0111\u00f3ng g\u00f3i qu\u00e1 d\u00e0y \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t trong v\u1eadt li\u1ec7u v\u00f4 \u0111\u1ecbnh h\u00ecnh.<\/li>\n
  • Thi\u1ebft k\u1ebf c\u00e1c k\u00eanh l\u00e0m m\u00e1t \u0111\u1ec3 ph\u00e2n b\u1ed5 nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u.<\/li>\n<\/ul>\n

    Nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y gi\u00fap t\u1ea1o ra c\u00e1c b\u1ed9 ph\u1eadn ch\u1ea5t l\u01b0\u1ee3ng cao, gi\u1ea3m thi\u1ec3u ch\u1ea5t th\u1ea3i v\u00e0 t\u0103ng hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t.<\/p>\n<\/section>\n

    \n

    C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p (FAQ)<\/h2>\n
    \n
    T\u1ea1i sao vi\u1ec7c s\u1ea5y kh\u00f4 s\u01a1 b\u1ed9 l\u1ea1i c\u1ea7n thi\u1ebft \u0111\u1ed1i v\u1edbi c\u00e1c v\u1eadt li\u1ec7u nh\u01b0 PA6 v\u00e0 PET?<\/dt>\n
    C\u00e1c v\u1eadt li\u1ec7u h\u00fat \u1ea9m n\u00e0y h\u1ea5p th\u1ee5 \u0111\u1ed9 \u1ea9m, d\u1eabn \u0111\u1ebfn qu\u00e1 tr\u00ecnh th\u1ee7y ph\u00e2n trong khi gia c\u00f4ng, g\u00e2y ra c\u00e1c khuy\u1ebft t\u1eadt nh\u01b0 b\u1ecdt kh\u00ed ho\u1eb7c gi\u1ea3m \u0111\u1ed9 b\u1ec1n. S\u1ea5y kh\u00f4 \u0111\u1ebfn \u0111\u1ed9 \u1ea9m <0,25% \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng.<\/dd>\n<\/dl>\n
    \n
    T\u1ed1c \u0111\u1ed9 phun \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m trong qu\u00e1 tr\u00ecnh \u00e9p khu\u00f4n PP?<\/dt>\n
    T\u1ed1c \u0111\u1ed9 cao \u0111\u1ed1i v\u1edbi th\u00e0nh m\u1ecfng gi\u00fap ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00f3ng b\u0103ng s\u1edbm; t\u1ed1c \u0111\u1ed9 trung b\u00ecnh \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng th\u00f4ng th\u01b0\u1eddng gi\u00fap tr\u00e1nh s\u1ef1 xu\u1ed1ng c\u1ea5p do l\u1ef1c c\u1eaft, \u0111\u1ea3m b\u1ea3o \u0111\u1ed5 \u0111\u1ea7y \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 gi\u1ea3m thi\u1ec3u v\u1ebft l\u00f5m.<\/dd>\n<\/dl>\n
    \n
    Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn \u0111\u1ed9 co ng\u00f3t c\u1ee7a HDPE?<\/dt>\n
    Nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n cho ph\u00e9p l\u00e0m ngu\u1ed9i ch\u1eadm h\u01a1n, l\u00e0m t\u0103ng \u0111\u1ed9 k\u1ebft tinh v\u00e0 \u0111\u1ed9 co ng\u00f3t (1,2-2,5%); ki\u1ec3m so\u00e1t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc.<\/dd>\n<\/dl>\n
    \n
    T\u1ea1i sao c\u1ea7n s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ti\u00eam \u0111a t\u1ea7ng trong x\u1eed l\u00fd \u1ea3nh PS?<\/dt>\n
    N\u00f3 t\u1ed1i \u01b0u h\u00f3a vi\u1ec7c \u0111i\u1ec1n \u0111\u1ea7y v\u1eadt li\u1ec7u cho c\u00e1c h\u00ecnh d\u1ea1ng ph\u1ee9c t\u1ea1p, c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u00f3ng b\u1ec1 m\u1eb7t v\u00e0 \u0111\u1ed9 b\u1ec1n \u0111\u01b0\u1eddng h\u00e0n \u0111\u1ed3ng th\u1eddi ng\u0103n ng\u1eeba t\u00ecnh tr\u1ea1ng \u0111i\u1ec1n \u0111\u1ea7y qu\u00e1 m\u1ee9c.<\/dd>\n<\/dl>\n
    \n
    L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 x\u1eed l\u00fd \u0111\u1ed9 nh\u1ea1y nhi\u1ec7t trong qu\u00e1 tr\u00ecnh \u0111\u00fac PVC-U?<\/dt>\n
    S\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 c\u1eaft th\u1ea5p, \u01b0u ti\u00ean nhi\u1ec7t ma s\u00e1t v\u00e0 \u00e1p su\u1ea5t ng\u01b0\u1ee3c t\u1ed1i \u0111a 30 MPa \u0111\u1ec3 tr\u00e1nh s\u1ef1 ph\u00e2n h\u1ee7y v\u00e0 \u0111\u1ea3m b\u1ea3o qu\u00e1 tr\u00ecnh n\u00f3ng ch\u1ea3y \u0111\u1ed3ng \u0111\u1ec1u.<\/dd>\n<\/dl>\n
    \n
    C\u1ea7n \u0111i\u1ec1u ch\u1ec9nh g\u00ec \u0111\u1ed1i v\u1edbi PA66 c\u00f3 ch\u1ee9a s\u1ee3i th\u1ee7y tinh?<\/dt>\n
    S\u1eed d\u1ee5ng th\u00f9ng ch\u1ee9a l\u01b0\u1ee1ng kim \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, nhi\u1ec7t \u0111\u1ed9 khu\u00f4n cao h\u01a1n \u0111\u1ec3 ho\u00e0n thi\u1ec7n s\u1ea3n ph\u1ea9m v\u00e0 ki\u1ec3m tra \u0111\u1ed9 co ng\u00f3t gi\u1ea3m (0,4-0,7%).<\/dd>\n<\/dl>\n<\/section>","protected":false},"excerpt":{"rendered":"

    Introduction to Injection Molding Parameters Injection molding parameters are critical for achieving high-quality plastic parts with consistent properties. These parameters include barrel temperatures, melt temperatures, mold temperatures, injection pressures, holding pressures, back pressures, injection speeds, screw speeds, metering strokes, residual amounts, pre-drying conditions, recovery rates, shrinkage rates, gating systems, machine shutdown procedures, and equipment requirements. […]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5816","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5816","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/comments?post=5816"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5816\/revisions"}],"predecessor-version":[{"id":5818,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/posts\/5816\/revisions\/5818"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/media?parent=5816"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/categories?post=5816"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/vi\/wp-json\/wp\/v2\/tags?post=5816"}],"curies":[{"name":"trang web","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}