{"id":378,"date":"2024-01-29T03:24:15","date_gmt":"2024-01-29T03:24:15","guid":{"rendered":"http:\/\/juyuans.com\/?p=378"},"modified":"2024-01-29T07:55:30","modified_gmt":"2024-01-29T07:55:30","slug":"mot-so-diem-can-luu-y-khi-ep-phun-nhua-pa66","status":"publish","type":"post","link":"https:\/\/juyuans.com\/vi\/mot-so-diem-can-luu-y-khi-ep-phun-nhua-pa66\/","title":{"rendered":"M\u1ed9t s\u1ed1 \u0111i\u1ec3m c\u1ea7n l\u01b0u \u00fd khi \u00e9p phun nh\u1ef1a PA66"},"content":{"rendered":"

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I. Qu\u00e1 tr\u00ecnh s\u1ea5y kh\u00f4: <\/strong>N\u1ebfu v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c ni\u00eam phong tr\u01b0\u1edbc khi x\u1eed l\u00fd th\u00ec kh\u00f4ng c\u1ea7n s\u1ea5y kh\u00f4. Tuy nhi\u00ean, n\u1ebfu th\u00f9ng b\u1ea3o qu\u1ea3n \u0111\u00e3 \u0111\u01b0\u1ee3c m\u1edf v\u00e0 \u0111\u1ed9 \u1ea9m kh\u00f4ng qu\u00e1 cao th\u00ec n\u00ean s\u1ea5y kh\u00f4 c\u00e1c h\u1ea1t trong kh\u00f4ng kh\u00ed n\u00f3ng \u1edf 85\u00b0C tr\u01b0\u1edbc khi x\u1eed l\u00fd. N\u1ebfu \u0111\u1ed9 \u1ea9m kh\u00f4ng kh\u00ed t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00f3 l\u1edbn h\u01a1n 0,2% th\u00ec c\u0169ng c\u1ea7n ph\u1ea3i s\u1ea5y ch\u00e2n kh\u00f4ng \u1edf 105\u00b0C trong 12 gi\u1edd.<\/span><\/p>\r\n

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II. Nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y: <\/strong>Th\u00f4ng th\u01b0\u1eddng, nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y l\u00e0 t\u1eeb 260\u00b0C \u0111\u1ebfn 290\u00b0C. Tuy nhi\u00ean, \u0111\u1ed1i v\u1edbi nh\u1eefng s\u1ea3n ph\u1ea9m \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1ed5 sung th\u00eam ph\u1ee5 gia th\u1ee7y tinh, nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t trong kho\u1ea3ng t\u1eeb 275\u00b0C \u0111\u1ebfn 280\u00b0C. Trong m\u1ecdi tr\u01b0\u1eddng h\u1ee3p, nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y ph\u1ea3i tr\u00e1nh v\u01b0\u1ee3t qu\u00e1 300\u00b0C.<\/span><\/p>\r\n

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III. Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n: <\/strong>Khuy\u1ebfn ngh\u1ecb \u1edf 80\u00b0C. Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 k\u1ebft tinh, t\u1eeb \u0111\u00f3 s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u1ee7a s\u1ea3n ph\u1ea9m. \u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac phun c\u00f3 th\u00e0nh m\u1ecfng, n\u1ebfu nhi\u1ec7t \u0111\u1ed9 khu\u00f4n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng d\u01b0\u1edbi 40\u00b0C th\u00ec \u0111\u1ed9 k\u1ebft tinh c\u1ee7a s\u1ea3n ph\u1ea9m s\u1ebd thay \u0111\u1ed5i theo th\u1eddi gian. V\u00ec v\u1eady, \u0111\u1ec3 duy tr\u00ec s\u1ef1 \u1ed5n \u0111\u1ecbnh h\u00ecnh h\u1ecdc c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u00fac phun, c\u1ea7n ph\u1ea3i \u1ee7 s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng.<\/span><\/p>\r\n

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IV. \u00c1p su\u1ea5t phun: <\/strong>Th\u00f4ng th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng t\u1eeb 750 \u0111\u1ebfn 1250 bar, \u00e1p su\u1ea5t phun ch\u1ee7 y\u1ebfu ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u v\u00e0 thi\u1ebft k\u1ebf c\u1ee7a s\u1ea3n ph\u1ea9m.<\/span><\/p>\r\n

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V. T\u1ed1c \u0111\u1ed9 phun: <\/strong>N\u00ean s\u1eed d\u1ee5ng t\u1ed1c \u0111\u1ed9 phun cao, m\u1eb7c d\u00f9 \u0111\u1ed1i v\u1edbi v\u1eadt li\u1ec7u gia c\u1ed1 th\u00ec n\u00ean th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat.<\/span><\/p>\r\n

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VI. Ng\u01b0\u1eddi ch\u1ea1y v\u00e0 c\u1ed5ng: <\/strong>Do th\u1eddi gian \u0111\u00f4ng \u0111\u1eb7c c\u1ee7a nh\u1ef1a PA66 ng\u1eafn n\u00ean v\u1ecb tr\u00ed \u0111\u1eb7t c\u1ed5ng l\u00e0 v\u00f4 c\u00f9ng quan tr\u1ecdng. \u0110\u01b0\u1eddng k\u00ednh c\u1ee7a c\u1ed5ng t\u1ed1t nh\u1ea5t l\u00e0 kh\u00f4ng nh\u1ecf h\u01a1n 0,5*t (trong \u0111\u00f3 t l\u00e0 \u0111\u1ed9 d\u00e0y c\u1ee7a s\u1ea3n ph\u1ea9m). N\u1ebfu s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng \u0111\u01b0\u1eddng d\u1eabn n\u00f3ng, k\u00edch th\u01b0\u1edbc c\u1ed5ng ph\u1ea3i nh\u1ecf h\u01a1n k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi \u0111\u01b0\u1eddng d\u1eabn th\u00f4ng th\u01b0\u1eddng v\u00ec \u0111\u01b0\u1eddng d\u1eabn n\u00f3ng c\u00f3 th\u1ec3 gi\u00fap ng\u0103n v\u1eadt li\u1ec7u \u0111\u00f4ng c\u1ee9ng s\u1edbm. N\u1ebfu s\u1eed d\u1ee5ng c\u1ed5ng t\u00e0u ng\u1ea7m th\u00ec \u0111\u01b0\u1eddng k\u00ednh t\u1ed1i thi\u1ec3u c\u1ee7a c\u1ed5ng ph\u1ea3i l\u00e0 0,75mm.<\/span><\/p>\r\n

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VII. T\u00ednh ch\u1ea5t l\u00fd h\u00f3a c\u1ee7a nh\u1ef1a PA66: <\/strong>Nh\u1ef1a PA66 c\u00f3 nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y t\u01b0\u01a1ng \u0111\u1ed1i cao trong s\u1ed1 c\u00e1c v\u1eadt li\u1ec7u polyamit. N\u00f3 l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u b\u00e1n tinh th\u1ec3 \u0111\u1ebfn tinh th\u1ec3. Nh\u1ef1a PA66 duy tr\u00ec \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 c\u1ee9ng ch\u1eafc ch\u1eafn ngay c\u1ea3 \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n. Sau khi \u0111\u00fac, PA66 v\u1eabn th\u1ec3 hi\u1ec7n kh\u1ea3 n\u0103ng h\u00fat \u1ea9m, \u0111i\u1ec1u n\u00e0y ch\u1ee7 y\u1ebfu ph\u1ee5 thu\u1ed9c v\u00e0o th\u00e0nh ph\u1ea7n v\u1eadt li\u1ec7u, \u0111\u1ed9 d\u00e0y th\u00e0nh v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng. Trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i xem x\u00e9t t\u00e1c \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9 h\u00fat \u1ea9m \u0111\u1ebfn \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00ecnh h\u1ecdc. \u0110\u1ec3 n\u00e2ng cao h\u01a1n n\u1eefa c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a nh\u1ef1a PA66, nhi\u1ec1u ch\u1ea5t bi\u1ebfn t\u00ednh kh\u00e1c nhau th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u00eam v\u00e0o. Th\u1ee7y tinh l\u00e0 ch\u1ea5t ph\u1ee5 gia ph\u1ed5 bi\u1ebfn nh\u1ea5t v\u00e0 \u0111\u00f4i khi cao su t\u1ed5ng h\u1ee3p nh\u01b0 EPDM v\u00e0 SBR \u0111\u01b0\u1ee3c th\u00eam v\u00e0o \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng va \u0111\u1eadp. Nh\u1ef1a PA66 c\u00f3 \u0111\u1ed9 nh\u1edbt th\u1ea5p n\u00ean c\u00f3 kh\u1ea3 n\u0103ng ch\u1ea3y t\u1ed1t (m\u1eb7c d\u00f9 kh\u00f4ng t\u1ed1t b\u1eb1ng PA6). \u0110\u1eb7c t\u00ednh n\u00e0y cho ph\u00e9p x\u1eed l\u00fd c\u00e1c th\u00e0nh ph\u1ea7n r\u1ea5t m\u1ecfng. \u0110\u1ed9 nh\u1edbt c\u1ee7a n\u00f3 r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9. T\u1ed1c \u0111\u1ed9 co ng\u00f3t c\u1ee7a nh\u1ef1a PA66 n\u1eb1m trong kho\u1ea3ng t\u1eeb 1% \u0111\u1ebfn 2%, vi\u1ec7c b\u1ed5 sung th\u00eam ch\u1ea5t ph\u1ee5 gia s\u1ee3i th\u1ee7y tinh c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 co r\u00fat xu\u1ed1ng 0,2% \u0111\u1ebfn 1%. C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 t\u1ed1c \u0111\u1ed9 co ng\u00f3t gi\u1eefa h\u01b0\u1edbng ngang v\u00e0 h\u01b0\u1edbng d\u1ecdc. Nh\u1ef1a PA66 c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng \u0111\u01b0\u1ee3c nhi\u1ec1u lo\u1ea1i dung m\u00f4i nh\u01b0ng c\u00f3 kh\u1ea3 n\u0103ng kh\u00e1ng axit v\u00e0 m\u1ed9t s\u1ed1 ch\u1ea5t clo kh\u00e1c y\u1ebfu h\u01a1n.<\/span><\/p>\r\n

<\/span><\/p>","protected":false},"excerpt":{"rendered":"

I. Drying Process: If the material is sealed before processing, then drying is not necessary. However, if the storage container has been opened and the humidity is not too high, it is recommended to dry the particles in hot air at 85\u00b0C before processing. If the air humidity at the time is greater than 0.2%, […]<\/p>\n","protected":false},"author":1,"featured_media":382,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[20],"class_list":["post-378","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-pa66"],"jetpack_featured_media_url":"https:\/\/juyuans.com\/wp-content\/uploads\/2024\/01\/PA6-HY2500-7-1.jpg","_links":{"self":[{"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/posts\/378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/comments?post=378"}],"version-history":[{"count":0,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/posts\/378\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/media\/382"}],"wp:attachment":[{"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/media?parent=378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/categories?post=378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/juyuans.com\/vi\/wp-json\/wp\/v2\/tags?post=378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}