![\"\"](\"https:\/\/www.alpapowder.com\/wp-content\/uploads\/2024\/03\/silica-powder-1024x662.jpeg\")
<\/p>\n<\/p>\n
B\u1ea3n th\u00e2n b\u1ed9t silica l\u00e0 m\u1ed9t ch\u1ea5t ph\u00e2n c\u1ef1c v\u00e0 \u01b0a n\u01b0\u1edbc. N\u00f3 c\u00f3 c\u00e1c \u0111\u1eb7c t\u00ednh giao di\u1ec7n kh\u00e1c v\u1edbi ma tr\u1eadn polymer v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch k\u00e9m. Th\u01b0\u1eddng kh\u00f3 ph\u00e2n t\u00e1n trong v\u1eadt li\u1ec7u n\u1ec1n. V\u00ec v\u1eady, vi\u1ec7c bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica<\/a> th\u01b0\u1eddng \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u. Thay \u0111\u1ed5i c\u00f3 m\u1ee5c \u0111\u00edch c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a b\u1ec1 m\u1eb7t b\u1ed9t silica<\/a> theo nhu c\u1ea7u c\u1ee7a \u1ee9ng d\u1ee5ng, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a n\u00f3 v\u1edbi v\u1eadt li\u1ec7u polymer h\u1eefu c\u01a1 v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 ph\u00e2n t\u00e1n v\u00e0 t\u00ednh l\u01b0u \u0111\u1ed9ng c\u1ee7a n\u00f3 trong v\u1eadt li\u1ec7u polymer.<\/p>\n C\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 ch\u1ea5t l\u01b0\u1ee3ng nguy\u00ean li\u1ec7u th\u00f4 c\u1ee7a b\u1ed9t silica<\/a>, quy tr\u00ecnh bi\u1ebfn t\u00ednh, ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t v\u00e0 ch\u1ea5t bi\u1ebfn t\u00ednh, li\u1ec1u l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh, \u0111i\u1ec1u ki\u1ec7n qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh (nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn t\u00ednh, th\u1eddi gian, pH v\u00e0 t\u1ed1c \u0111\u1ed9 khu\u1ea5y) \u0111\u1ec1u \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u \u1ee9ng bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica. Trong s\u1ed1 \u0111\u00f3, ph\u01b0\u01a1ng ph\u00e1p s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t v\u00e0 ch\u1ea5t bi\u1ebfn t\u00ednh l\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 s\u1eeda \u0111\u1ed5i.<\/p>\n 1. Ch\u1ea5t l\u01b0\u1ee3ng nguy\u00ean li\u1ec7u b\u1ed9t silica<\/a><\/p>\n Lo\u1ea1i, k\u00edch th\u01b0\u1edbc h\u1ea1t, di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ri\u00eang, nh\u00f3m ch\u1ee9c b\u1ec1 m\u1eb7t v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c c\u1ee7a b\u1ed9t silica<\/a> \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a n\u00f3 v\u1edbi c\u00e1c ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t. Hi\u1ec7u \u1ee9ng bi\u1ebfn \u0111\u1ed5i c\u1ee7a c\u00e1c lo\u1ea1i b\u1ed9t silica<\/a> kh\u00e1c nhau c\u0169ng kh\u00e1c nhau. Trong s\u1ed1 \u0111\u00f3, b\u1ed9t silica<\/a> h\u00ecnh c\u1ea7u c\u00f3 t\u00ednh l\u01b0u \u0111\u1ed9ng t\u1ed1t, d\u1ec5 k\u1ebft h\u1ee3p v\u1edbi ch\u1ea5t bi\u1ebfn t\u00ednh trong qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh v\u00e0 c\u00f3 th\u1ec3 ph\u00e2n t\u00e1n t\u1ed1t h\u01a1n trong h\u1ec7 th\u1ed1ng polyme h\u1eefu c\u01a1. V\u00e0 m\u1eadt \u0111\u1ed9, \u0111\u1ed9 c\u1ee9ng, h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i v\u00e0 c\u00e1c t\u00ednh ch\u1ea5t kh\u00e1c t\u1ed1t h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi b\u1ed9t silica<\/a> g\u00f3c.<\/p>\n 2. Ph\u01b0\u01a1ng ph\u00e1p s\u1eeda \u0111\u1ed5i v\u00e0 s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t<\/p>\n Hi\u1ec7n nay, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica<\/a> ch\u1ee7 y\u1ebfu l\u00e0 bi\u1ebfn \u0111\u1ed5i h\u1eefu c\u01a1, bi\u1ebfn \u0111\u1ed5i v\u00f4 c\u01a1 v\u00e0 bi\u1ebfn \u0111\u1ed5i c\u01a1 h\u00f3a, trong \u0111\u00f3 ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn \u0111\u1ed5i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t l\u00e0 bi\u1ebfn \u0111\u1ed5i h\u1eefu c\u01a1. Khi hi\u1ec7u \u1ee9ng s\u1eeda \u0111\u1ed5i \u0111\u01a1n l\u1ebb kh\u00f4ng t\u1ed1t, b\u1ea1n c\u00f3 th\u1ec3 c\u00e2n nh\u1eafc k\u1ebft h\u1ee3p s\u1eeda \u0111\u1ed5i h\u1eefu c\u01a1 v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p s\u1eeda \u0111\u1ed5i kh\u00e1c \u0111\u1ec3 s\u1eeda \u0111\u1ed5i t\u1ed5ng h\u1ee3p.<\/p>\n (1) Bi\u1ebfn \u0111\u1ed5i h\u1eefu c\u01a1 (2) Bi\u1ebfn \u0111\u1ed5i v\u00f4 c\u01a1 (3) Bi\u1ebfn \u0111\u1ed5i c\u01a1 h\u00f3a 3. Li\u1ec1u l\u01b0\u1ee3ng \u0111i\u1ec1u ch\u1ec9nh<\/p>\n L\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn s\u1ed1 l\u01b0\u1ee3ng \u0111i\u1ec3m ho\u1ea1t \u0111\u1ed9ng (ch\u1eb3ng h\u1ea1n nh\u01b0 Si-OH) tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica<\/a> v\u00e0 l\u1edbp \u0111\u01a1n ph\u00e2n t\u1eed v\u00e0 \u0111\u1ed9 d\u00e0y l\u01b0\u1ee1ng ph\u00e2n t\u1eed c\u1ee7a ch\u1ea5t bi\u1ebfn t\u00ednh bao ph\u1ee7 b\u1ec1 m\u1eb7t.<\/p>\n Khi l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh qu\u00e1 nh\u1ecf, m\u1ee9c \u0111\u1ed9 ho\u1ea1t h\u00f3a b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica<\/a> bi\u1ebfn t\u00ednh s\u1ebd kh\u00f4ng cao; khi l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh qu\u00e1 l\u1edbn, n\u00f3 kh\u00f4ng ch\u1ec9 l\u00e0m t\u0103ng chi ph\u00ed s\u1eeda \u0111\u1ed5i m\u00e0 c\u00f2n t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp v\u1eadt l\u00fd nhi\u1ec1u l\u1edbp tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica bi\u1ebfn t\u00ednh. S\u1ef1 h\u1ea5p ph\u1ee5 l\u00e0m cho b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac gi\u1eefa b\u1ed9t silica<\/a> v\u00e0 polyme h\u1eefu c\u01a1 t\u1ea1o th\u00e0nh m\u1ed9t l\u1edbp y\u1ebfu, d\u1eabn \u0111\u1ebfn kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t c\u1ea7u n\u1ed1i ph\u00e2n t\u1eed \u0111\u01a1n l\u1ebb.<\/p>\n 4. Qu\u00e1 tr\u00ecnh s\u1eeda \u0111\u1ed5i v\u00e0 t\u1ed1i \u01b0u h\u00f3a \u0111i\u1ec1u ki\u1ec7n<\/p>\n C\u00e1c quy tr\u00ecnh bi\u1ebfn \u0111\u1ed5i th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho b\u1ed9t silica<\/a> ch\u1ee7 y\u1ebfu bao g\u1ed3m bi\u1ebfn \u0111\u1ed5i kh\u00f4, bi\u1ebfn \u0111\u1ed5i \u01b0\u1edbt v\u00e0 bi\u1ebfn \u0111\u1ed5i h\u1ed7n h\u1ee3p.<\/p>\n Bi\u1ebfn t\u00ednh kh\u00f4 l\u00e0 bi\u1ebfn \u0111\u1ed5i trong \u0111\u00f3 b\u1ed9t silica<\/a> \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n trong thi\u1ebft b\u1ecb bi\u1ebfn t\u00ednh \u1edf tr\u1ea1ng th\u00e1i t\u01b0\u01a1ng \u0111\u1ed1i kh\u00f4 v\u00e0 k\u1ebft h\u1ee3p v\u1edbi m\u1ed9t l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t nh\u1ea5t \u0111\u1ecbnh \u1edf nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh. Qu\u00e1 tr\u00ecnh s\u1eeda \u0111\u1ed5i kh\u00f4 \u0111\u01a1n gi\u1ea3n v\u00e0 c\u00f3 chi ph\u00ed s\u1ea3n xu\u1ea5t th\u1ea5p. \u0110\u00e2y hi\u1ec7n l\u00e0 ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t ch\u00ednh c\u1ee7a b\u1ed9t silica<\/a> trong n\u01b0\u1edbc v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi b\u1ed9t silica \u1edf c\u1ea5p \u0111\u1ed9 micron.<\/p>\n Ngo\u00e0i ra, \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 bi\u1ebfn t\u00ednh t\u1ed1t c\u1ee7a b\u1ed9t silica<\/a>, c\u1ea7n ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9, \u0111\u1ed9 pH, th\u1eddi gian, t\u1ed1c \u0111\u1ed9 khu\u1ea5y v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n x\u1eed l\u00fd kh\u00e1c trong qu\u00e1 tr\u00ecnh bi\u1ebfn t\u00ednh.<\/p>\n Nhi\u1ec7t \u0111\u1ed9 bi\u1ebfn t\u00ednh l\u00e0 \u0111i\u1ec1u ki\u1ec7n quan tr\u1ecdng cho qu\u00e1 tr\u00ecnh ng\u01b0ng t\u1ee5, kh\u1eed n\u01b0\u1edbc v\u00e0 h\u00ecnh th\u00e0nh li\u00ean k\u1ebft c\u1ed9ng h\u00f3a tr\u1ecb m\u1ea1nh gi\u1eefa ch\u1ea5t bi\u1ebfn t\u00ednh v\u00e0 b\u1ed9t silica<\/a>. Nhi\u1ec7t \u0111\u1ed9 s\u1eeda \u0111\u1ed5i kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 cao ho\u1eb7c qu\u00e1 th\u1ea5p. Nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao s\u1ebd khi\u1ebfn ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ecb ph\u00e2n h\u1ee7y ho\u1eb7c bay h\u01a1i, nhi\u1ec7t \u0111\u1ed9 qu\u00e1 th\u1ea5p s\u1ebd khi\u1ebfn ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ecb ph\u00e2n h\u1ee7y ho\u1eb7c bay h\u01a1i. \u0110i\u1ec1u n\u00e0y s\u1ebd l\u00e0m gi\u1ea3m t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng gi\u1eefa ch\u1ea5t bi\u1ebfn t\u00ednh v\u00e0 b\u1ed9t silica<\/a>, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 bi\u1ebfn t\u00ednh.<\/p>\n","protected":false},"excerpt":{"rendered":" Bi\u1ebfn t\u00ednh kh\u00f4 l\u00e0 bi\u1ebfn \u0111\u1ed5i trong \u0111\u00f3 b\u1ed9t silica \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n trong thi\u1ebft b\u1ecb bi\u1ebfn t\u00ednh \u1edf tr\u1ea1ng th\u00e1i t\u01b0\u01a1ng \u0111\u1ed1i kh\u00f4 v\u00e0 k\u1ebft h\u1ee3p v\u1edbi m\u1ed9t l\u01b0\u1ee3ng ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t nh\u1ea5t \u0111\u1ecbnh \u1edf nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh.<\/p>\n","protected":false},"author":7,"featured_media":131100,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-131137","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\/131137","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=131137"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/131137\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/131100"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=131137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=131137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=131137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nBi\u1ebfn \u0111\u1ed5i h\u1eefu c\u01a1 l\u00e0 ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng c\u00e1c nh\u00f3m ch\u1ee9c trong ch\u1ea5t h\u1eefu c\u01a1 \u0111\u1ec3 th\u1ef1c hi\u1ec7n h\u1ea5p ph\u1ee5 v\u1eadt l\u00fd, h\u1ea5p ph\u1ee5 h\u00f3a h\u1ecdc v\u00e0 ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica<\/a> \u0111\u1ec3 thay \u0111\u1ed5i t\u00ednh ch\u1ea5t b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t silica.<\/p>\n
\nBi\u1ebfn \u0111\u1ed5i v\u00f4 c\u01a1 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c ph\u1ee7 ho\u1eb7c k\u1ebft h\u1ee3p kim lo\u1ea1i, oxit v\u00f4 c\u01a1, hydroxit, v.v. tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica<\/a> \u0111\u1ec3 t\u1ea1o ra c\u00e1c ch\u1ee9c n\u0103ng m\u1edbi cho v\u1eadt li\u1ec7u. V\u00ed d\u1ee5, Oyama v\u00e0 c\u1ed9ng s\u1ef1. \u0111\u00e3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p k\u1ebft t\u1ee7a \u0111\u1ec3 ph\u1ee7 Al(OH)3 l\u00ean b\u1ec1 m\u1eb7t SiO2, sau \u0111\u00f3 b\u1ecdc SiO2 \u0111\u00e3 bi\u1ebfn t\u00ednh b\u1eb1ng polydivinylbenzen, c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng m\u1ed9t s\u1ed1 y\u00eau c\u1ea7u \u1ee9ng d\u1ee5ng \u0111\u1eb7c bi\u1ec7t nh\u1ea5t \u0111\u1ecbnh.<\/p>\n
\nBi\u1ebfn \u0111\u1ed5i c\u01a1 h\u00f3a h\u1ecdc tr\u01b0\u1edbc ti\u00ean \u0111\u1ec1 c\u1eadp \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng l\u1ef1c m\u00e0i si\u00eau m\u1ecbn v\u00e0 c\u00e1c l\u1ef1c c\u01a1 h\u1ecdc m\u1ea1nh kh\u00e1c \u0111\u1ec3 k\u00edch ho\u1ea1t b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t b\u1ed9t \u0111\u1ec3 t\u0103ng \u0111i\u1ec3m ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c nh\u00f3m ho\u1ea1t \u0111\u1ed9ng tr\u00ean b\u1ec1 m\u1eb7t b\u1ed9t silica<\/a>, sau \u0111\u00f3 k\u1ebft h\u1ee3p c\u00e1c ch\u1ea5t bi\u1ebfn t\u00ednh \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 bi\u1ebfn \u0111\u1ed5i t\u1ed5ng h\u1ee3p c\u1ee7a b\u1ed9t silica.<\/p>\n