{"id":119205,"date":"2022-10-08T09:48:48","date_gmt":"2022-10-08T01:48:48","guid":{"rendered":"https:\/\/www.alpapowder.com\/119205\/"},"modified":"2022-10-09T09:58:49","modified_gmt":"2022-10-09T01:58:49","slug":"tien-trinh-ung-dung-va-nghien-cuu-cua-chat-chong-chay-hydroxit-trong-polyetylen","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/119205\/","title":{"rendered":"Ti\u1ebfn tr\u00ecnh \u1ee9ng d\u1ee5ng v\u00e0 nghi\u00ean c\u1ee9u c\u1ee7a ch\u1ea5t ch\u1ed1ng ch\u00e1y hydroxit trong polyetylen"},"content":{"rendered":"

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Polyetylen (PE) l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo thu \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch tr\u00f9ng h\u1ee3p etylen \u0111\u01a1n ph\u00e2n. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ea1nh t\u1ed1t, \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc v\u00e0 t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i t\u1ed1t. N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1p, phim, \u0111\u01b0\u1eddng \u1ed1ng, bao b\u00ec, th\u00f9ng ch\u1ee9a, thi\u1ebft b\u1ecb y t\u1ebf v\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m kh\u00e1c. Nh\u01b0ng ch\u1ec9 s\u1ed1 oxy PE l\u00e0 17,4%, l\u00e0 v\u1eadt li\u1ec7u d\u1ec5 ch\u00e1y. Ch\u1ea5t li\u1ec7u PE c\u00f3 t\u1ed1c \u0111\u1ed9 ch\u00e1y nhanh, t\u1ecfa nhi\u1ec7t \/ kh\u00f3i l\u1edbn, d\u1ec5 ch\u1ea3y ra v\u00e0 r\u01a1i ra khi \u0111\u1ed1t, \u0111e d\u1ecda l\u1edbn \u0111\u1ebfn an to\u00e0n t\u00ednh m\u1ea1ng v\u00e0 t\u00e0i s\u1ea3n, h\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a polyetylen. Do \u0111\u00f3, b\u1eaft bu\u1ed9c ph\u1ea3i th\u1ef1c hi\u1ec7n s\u1eeda \u0111\u1ed5i ch\u1ea5t ch\u1ed1ng ch\u00e1y.<\/p>\n

Ch\u1ea5t ch\u1ed1ng ch\u00e1y hydroxit kim lo\u1ea1i ch\u1ee7 y\u1ebfu l\u00e0 nh\u00f4m hydroxit v\u00e0 magie hydroxit. Ch\u1ea5t ch\u1ed1ng ch\u00e1y magie-nh\u00f4m c\u00f3 t\u00ednh \u1ed5n \u0111\u1ecbnh t\u1ed1t, kh\u00f4ng \u0111\u1ed9c h\u1ea1i v\u00e0 \u00edt t\u1ea1o kh\u00f3i. Trong qu\u00e1 tr\u00ecnh ch\u00e1y, h\u01a1i n\u01b0\u1edbc s\u1ebd tho\u00e1t ra l\u00e0m lo\u00e3ng kh\u00ed ch\u00e1y, l\u1ea5y \u0111i m\u1ed9t ph\u1ea7n nhi\u1ec7t l\u01b0\u1ee3ng, \u1ee9c ch\u1ebf qu\u00e1 tr\u00ecnh ch\u00e1y v\u00e0 t\u1ea1o ra hi\u1ec7u \u1ee9ng ch\u1ed1ng ch\u00e1y. Ch\u1ea5t ch\u1ed1ng ch\u00e1y nh\u00f4m-magi\u00ea c\u00f3 th\u1ec3 k\u00e9o d\u00e0i th\u1eddi gian b\u1eaft l\u1eeda v\u00e0 gi\u1ea3m t\u1ed1c \u0111\u1ed9 t\u1ecfa nhi\u1ec7t. Kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a magie hydroxit v\u1edbi PE k\u00e9m v\u00e0 hi\u1ec7u qu\u1ea3 ch\u1ed1ng ch\u00e1y th\u1ea5p. N\u00f3 c\u1ea7n m\u1ed9t l\u01b0\u1ee3ng l\u1edbn b\u1ed5 sung \u0111\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t ch\u1ed1ng ch\u00e1y, v\u00e0 b\u1ed5 sung m\u1ed9t l\u01b0\u1ee3ng l\u1edbn s\u1ebd l\u00e0m gi\u1ea3m qu\u00e1 tr\u00ecnh x\u1eed l\u00fd v\u1eadt li\u1ec7u composite. gi\u1edbi t\u00ednh v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc.<\/p>\n

Magi\u00ea hydroxit \u0111\u01b0\u1ee3c bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t b\u1eb1ng natri stearat v\u00e0 polyetylen glycol l\u00e0m ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh, v\u00e0 v\u1eadt li\u1ec7u t\u1ed5ng h\u1ee3p ch\u1ed1ng ch\u00e1y polyetylen m\u1eadt \u0111\u1ed9 cao \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf. Nghi\u00ean c\u1ee9u cho th\u1ea5y r\u1eb1ng khi l\u01b0\u1ee3ng b\u1ed5 sung magie hydroxit bi\u1ebfn t\u00ednh l\u00e0 30%, \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a v\u1eadt li\u1ec7u composite HDPE \/ magie hydroxit l\u00e0 12,3MPa, magie hydroxit c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch t\u1ed1t v\u1edbi HDPE v\u00e0 ch\u1ec9 s\u1ed1 oxy gi\u1edbi h\u1ea1n t\u0103ng l\u00ean 24,6%, hi\u1ec7u su\u1ea5t ch\u1ed1ng ch\u00e1y \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u00edt h\u01a1n.<\/p>\n

Hydroxit k\u00e9p ph\u00e2n l\u1edbp s\u1ebd gi\u1ea3i ph\u00f3ng CO2 v\u00e0 H2O khi n\u00f3 ph\u00e2n h\u1ee7y, pha lo\u00e3ng v\u00e0 ch\u1eb7n oxy, l\u00e0m cho n\u00f3 c\u00f3 t\u00e1c d\u1ee5ng ch\u1ed1ng ch\u00e1y t\u1ed1t v\u00e0 c\u00f3 th\u1ec3 thay th\u1ebf c\u00e1c ch\u1ea5t ch\u1ed1ng ch\u00e1y ch\u1ee9a halogen v\u00e0 ph\u1ed1t pho.<\/p>\n

V\u1eadt li\u1ec7u t\u1ed5ng h\u1ee3p ch\u1ed1ng ch\u00e1y nh\u00f4m hydroxit \/ Mg-Fe-LDH \/ HDPE \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf b\u1eb1ng nh\u00f4m hydroxit v\u00e0 hydroxit k\u00e9p s\u1eaft magie t\u1ef1 t\u1ea1o (Mg-FeLDH) l\u00e0m ch\u1ea5t ch\u1ed1ng ch\u00e1y. Nghi\u00ean c\u1ee9u cho th\u1ea5y nh\u00f4m hydroxit v\u00e0 Mg-Fe-LDH c\u00f3 th\u1ec3 \u1ee9c ch\u1ebf hi\u1ec7u qu\u1ea3 s\u1ef1 gi\u1ea3i ph\u00f3ng CO v\u00e0 t\u1ecfa nhi\u1ec7t trong qu\u00e1 tr\u00ecnh \u0111\u1ed1t ch\u00e1y v\u1eadt li\u1ec7u composite (HDPE1, HDPE2, HDPE3), l\u00e0m cho HDPE kh\u00f3 b\u1eaft l\u1eeda. Khi t\u1ed5ng l\u01b0\u1ee3ng ch\u1ea5t ch\u1ed1ng ch\u00e1y l\u00e0 40% (2% Mg-Fe-LDH, HDPE2), v\u1eadt li\u1ec7u t\u1ed5ng h\u1ee3p HDPE c\u00f3 \u0111\u1eb7c t\u00ednh ch\u1ed1ng ch\u00e1y t\u1ed1t.<\/p>\n

V\u1eadt li\u1ec7u t\u1ed5ng h\u1ee3p HDPE \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf v\u1edbi nh\u00f4m hydroxit, vermiculit tr\u01b0\u01a1ng n\u1edf v\u00e0 antimon trioxit l\u00e0m ch\u1ea5t ch\u1ed1ng ch\u00e1y. Nghi\u00ean c\u1ee9u cho th\u1ea5y khi t\u1ef7 l\u1ec7 nh\u00f4m hydroxit \/ vermiculite tr\u01b0\u01a1ng n\u1edf l\u00e0 3: 2, c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a v\u1eadt li\u1ec7u composite t\u1ed1t h\u01a1n, v\u00e0 hi\u1ec7u su\u1ea5t ng\u0103n kh\u00f3i v\u00e0 ch\u1ed1ng ch\u00e1y \u0111\u1ea1t m\u1ee9c FV-0. Khi t\u1ed5ng l\u01b0\u1ee3ng nh\u00f4m hydroxit v\u00e0 vermiculite tr\u01b0\u01a1ng n\u1edf l\u00e0 50%, ch\u1ec9 s\u1ed1 oxy gi\u1edbi h\u1ea1n \u0111\u1ea7u ti\u00ean t\u0103ng v\u00e0 sau \u0111\u00f3 gi\u1ea3m khi s\u1ef1 t\u0103ng c\u1ee7a nh\u00f4m hydroxit, v\u00e0 t\u1ef7 l\u1ec7 t\u1ed1i \u01b0u l\u00e0 3\u22362.<\/p>\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a magi\u00ea hydroxit v\u00e0 k\u1ebdm borat l\u00ean \u0111\u1eb7c t\u00ednh ch\u1ed1ng ch\u00e1y c\u1ee7a polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p tuy\u1ebfn t\u00ednh v\u00e0 \u0111\u1ed3ng tr\u00f9ng h\u1ee3p etylen etyl acrylat \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u. Ng\u01b0\u1eddi ta nh\u1eadn th\u1ea5y r\u1eb1ng v\u1edbi vi\u1ec7c t\u0103ng t\u1ef7 l\u1ec7 magie hydroxit v\u00e0 k\u1ebdm borat, t\u00ednh n\u0103ng ch\u1ed1ng ch\u00e1y c\u1ee7a v\u1eadt li\u1ec7u composite \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n. Khi l\u01b0\u1ee3ng magie hydroxit b\u1ed5 sung l\u00e0 65%, hi\u1ec7u su\u1ea5t ch\u1ed1ng ch\u00e1y l\u00e0 t\u1ed1t nh\u1ea5t, \u0111\u1ea1t m\u1ee9c UL94V-0.<\/p>\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a magie hydroxit \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh ch\u1ed1ng ch\u00e1y c\u1ee7a polyetylen m\u1eadt \u0111\u1ed9 th\u1ea5p tuy\u1ebfn t\u00ednh \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u. Khi li\u1ec1u l\u01b0\u1ee3ng magie hydroxit \u0111\u1ea1t 70%, ch\u1ec9 s\u1ed1 oxy gi\u1edbi h\u1ea1n \u0111\u1ea1t 31,4%, cao h\u01a1n kho\u1ea3ng 71% so v\u1edbi nguy\u00ean li\u1ec7u tinh khi\u1ebft v\u00e0 th\u1eed nghi\u1ec7m \u0111\u1ed1t ch\u00e1y th\u1eb3ng \u0111\u1ee9ng \u0111\u1ea1t m\u1ee9c V-0.<\/p>\n

Ch\u1ea5t ch\u1ed1ng ch\u00e1y hydroxit kim lo\u1ea1i an to\u00e0n, th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng v\u00e0 kh\u00f4ng t\u1ed1n k\u00e9m. Khi s\u1eed d\u1ee5ng \u0111\u01a1n l\u1ebb th\u00ec hi\u1ec7u qu\u1ea3 ch\u1ed1ng ch\u00e1y kh\u00f4ng t\u1ed1t, c\u1ea7n b\u1ed5 sung m\u1ed9t l\u01b0\u1ee3ng l\u1edbn \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh n\u0103ng ch\u1ed1ng ch\u00e1y c\u1ee7a v\u1eadt li\u1ec7u, nh\u01b0ng khi th\u00eam m\u1ed9t l\u01b0\u1ee3ng l\u1edbn th\u00ec c\u01a1 t\u00ednh s\u1ebd b\u1ecb gi\u1ea3m. Do \u0111\u00f3, h\u01b0\u1edbng nghi\u00ean c\u1ee9u c\u1ee7a ch\u1ea5t ch\u1ed1ng ch\u00e1y hydroxit l\u00e0 nghi\u00ean c\u1ee9u s\u1ef1 bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t v\u00e0 s\u1eed d\u1ee5ng n\u00f3 k\u1ebft h\u1ee3p v\u1edbi ch\u1ea5t ch\u1ed1ng ch\u00e1y nit\u01a1 v\u00e0 ph\u1ed1t pho \u0111\u1ec3 n\u00e2ng cao t\u00ednh n\u0103ng ch\u1ed1ng ch\u00e1y v\u00e0 gi\u1ea3m l\u01b0\u1ee3ng b\u1ed5 sung.<\/p>\n","protected":false},"excerpt":{"rendered":"

Polyetylen (PE) l\u00e0 m\u1ed9t lo\u1ea1i nh\u1ef1a nhi\u1ec7t d\u1ebbo thu \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch tr\u00f9ng h\u1ee3p etylen \u0111\u01a1n ph\u00e2n. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu l\u1ea1nh t\u1ed1t, \u0111\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc v\u00e0 t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i t\u1ed1t.<\/p>\n","protected":false},"author":7,"featured_media":119181,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-119205","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cong-nghiep-tin-tuc-vi"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/119205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=119205"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/119205\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/119181"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=119205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=119205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=119205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}