{"id":133136,"date":"2024-07-26T11:28:48","date_gmt":"2024-07-26T03:28:48","guid":{"rendered":"https:\/\/www.alpapowder.com\/133136\/"},"modified":"2024-07-26T11:28:50","modified_gmt":"2024-07-26T03:28:50","slug":"bien-tinh-be-mat-kich-hoat-cua-talc-va-ung-dung-cua-no-trong-nhua-va-lop-phu","status":"publish","type":"post","link":"https:\/\/www.alpapowder.com\/vi\/133136\/","title":{"rendered":"Bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t (k\u00edch ho\u1ea1t) c\u1ee7a talc v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong nh\u1ef1a v\u00e0 l\u1edbp ph\u1ee7"},"content":{"rendered":"

\"\"<\/p>\n

Talc l\u00e0 m\u1ed9t silicat ng\u1eadm n\u01b0\u1edbc c\u00f3 c\u00f4ng th\u1ee9c h\u00f3a h\u1ecdc l\u00e0 3MgO\u00b74SiO2\u00b7H2O. H\u00ecnh d\u1ea1ng tinh th\u1ec3 c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 l\u00e0 d\u1ea1ng v\u1ea3y, d\u1ea1ng l\u00e1, d\u1ea1ng kim v\u00e0 d\u1ea1ng kh\u1ed1i.<\/p>\n

C\u1ea5u tr\u00fac c\u1ee7a talc nguy\u00ean ch\u1ea5t bao g\u1ed3m m\u1ed9t l\u1edbp brucit (magi\u00ea hydroxit, MgO\u00b7H2O) k\u1eb9p gi\u1eefa hai l\u1edbp silica<\/a>, v\u1edbi c\u00e1c l\u1edbp x\u1ebfp ch\u1ed3ng l\u00ean nhau v\u00e0 c\u00e1c l\u1edbp talc li\u1ec1n k\u1ec1 \u0111\u01b0\u1ee3c li\u00ean k\u1ebft b\u1eb1ng l\u1ef1c van der Waals y\u1ebfu. Khi c\u1eaft, c\u00e1c l\u1edbp c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng tr\u01b0\u1ee3t v\u00e0o nhau.<\/p>\n

Talc tr\u01a1 v\u1edbi h\u1ea7u h\u1ebft c\u00e1c thu\u1ed1c th\u1eed h\u00f3a h\u1ecdc, kh\u00f4ng ph\u00e2n h\u1ee7y khi ti\u1ebfp x\u00fac v\u1edbi axit, l\u00e0 ch\u1ea5t d\u1eabn \u0111i\u1ec7n k\u00e9m, c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t th\u1ea5p v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng s\u1ed1c nhi\u1ec7t cao, v\u00e0 kh\u00f4ng ph\u00e2n h\u1ee7y khi \u0111un n\u00f3ng \u0111\u1ebfn 900\u00b0C.<\/p>\n

Nh\u1eefng \u0111\u1eb7c t\u00ednh tuy\u1ec7t v\u1eddi n\u00e0y c\u1ee7a talc khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh ch\u1ea5t \u0111\u1ed9n t\u1ed1t v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong l\u0129nh v\u1ef1c nh\u1ef1a v\u00e0 l\u1edbp ph\u1ee7, nh\u01b0ng b\u1ec1 m\u1eb7t \u01b0a n\u01b0\u1edbc c\u1ee7a talc h\u1ea1n ch\u1ebf \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 trong m\u1ed9t s\u1ed1 l\u0129nh v\u1ef1c k\u1ef5 n\u01b0\u1edbc. \u0110\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3 h\u01a1n n\u1eefa v\u00e0 m\u1edf r\u1ed9ng c\u00e1c l\u0129nh v\u1ef1c \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3, c\u1ea7n ph\u1ea3i s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t.<\/p>\n

1. Ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t v\u00e0 c\u00e1c ch\u1ea5t bi\u1ebfn t\u00ednh th\u01b0\u1eddng d\u00f9ng cho talc<\/p>\n

(1) C\u00e1c ch\u1ea5t bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t th\u01b0\u1eddng d\u00f9ng cho talc<\/p>\n

\u0110\u1ec3 talc li\u00ean k\u1ebft t\u1ed1t h\u01a1n v\u1edbi polyme, hi\u1ec7n nay c\u00f3 hai lo\u1ea1i ch\u1ea5t bi\u1ebfn t\u00ednh ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 bi\u1ebfn t\u00ednh:<\/p>\n

C\u00e1c ch\u1ea5t li\u00ean k\u1ebft: ch\u1ee7 y\u1ebfu l\u00e0 titanat, aluminat, silan v\u00e0 axit stearic. Titanat \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn h\u01a1n. C\u1ea5u tr\u00fac ph\u00e2n t\u1eed c\u1ee7a ch\u00fang l\u00e0 R\u00b4-O-Ti-(O-X-R-Y)n, trong \u0111\u00f3 R\u00b4O- c\u00f3 th\u1ec3 ph\u1ea3n \u1ee9ng v\u1edbi c\u1ea5u tr\u00fac h\u00f3a h\u1ecdc c\u1ee7a b\u1ec1 m\u1eb7t ch\u1ea5t \u0111\u1ed9n, R l\u00e0 nh\u00f3m r\u1ed1i chu\u1ed7i d\u00e0i c\u00f3 c\u1ea5u tr\u00fac b\u00e9o ho\u1eb7c th\u01a1m, c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa polyme v\u00e0 ch\u1ea5t \u0111\u1ed9n, v\u00e0 Y l\u00e0 nh\u00f3m ho\u1ea1t \u0111\u1ed9ng ph\u1ea3n \u1ee9ng c\u00f3 th\u1ec3 li\u00ean k\u1ebft ch\u00e9o ho\u1eb7c li\u00ean k\u1ebft trong h\u1ec7 th\u1ed1ng ch\u1ea5t \u0111\u1ed9n polyme.<\/p>\n

Ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t: ch\u1ee7 y\u1ebfu l\u00e0 natri dodecylbenzene sulfonate, natri dodecyl sulfonate, dodecyltrimethylammonium bromide, dodecyltrimethylammonium chloride, natri olefin sulfonate, v.v., c\u00f3 t\u00e1c d\u1ee5ng gi\u1ed1ng nh\u01b0 ch\u1ea5t k\u1ebft d\u00ednh trong vi\u1ec7c c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa polyme v\u00e0 ch\u1ea5t \u0111\u1ed9n, nh\u01b0ng c\u01a1 ch\u1ebf li\u00ean k\u1ebft c\u1ee7a ch\u00fang v\u1edbi b\u1ec1 m\u1eb7t ch\u1ea5t \u0111\u1ed9n kh\u00e1c v\u1edbi c\u01a1 ch\u1ebf c\u1ee7a ch\u1ea5t k\u1ebft d\u00ednh.<\/p>\n

(2) Ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9t talc<\/p>\n

Bi\u1ebfn t\u00ednh ph\u1ee7 b\u1ec1 m\u1eb7t: Ph\u1ee7 b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t b\u1eb1ng ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t \u0111\u1ec3 t\u1ea1o cho c\u00e1c h\u1ea1t nh\u1eefng t\u00ednh ch\u1ea5t m\u1edbi l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u1ed5 bi\u1ebfn hi\u1ec7n nay.<\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p c\u01a1 h\u1ecdc h\u00f3a h\u1ecdc: M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p bi\u1ebfn t\u00ednh s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n, ma s\u00e1t v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 nghi\u1ec1n v\u00e0 ch\u00e0 x\u00e1t c\u00e1c h\u1ea1t t\u01b0\u01a1ng \u0111\u1ed1i l\u1edbn \u0111\u1ec3 l\u00e0m cho ch\u00fang nh\u1ecf h\u01a1n.<\/p>\n

Bi\u1ebfn t\u00ednh m\u00e0ng ngo\u00e0i: M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ph\u1ee7 \u0111\u1ed3ng \u0111\u1ec1u m\u1ed9t l\u1edbp polyme tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t \u0111\u1ec3 thay \u0111\u1ed5i c\u00e1c t\u00ednh ch\u1ea5t b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t. \u0110\u1ed1i v\u1edbi b\u1ed9t talc, \u0111\u1ea7u ti\u00ean c\u00f3 th\u1ec3 nghi\u1ec1n v\u00e0 ho\u1ea1t h\u00f3a, sau \u0111\u00f3 h\u1ea5p ph\u1ee5 b\u1eb1ng ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t trong \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh, sau \u0111\u00f3 h\u1ea5p ph\u1ee5 b\u1eb1ng monome th\u00f4ng qua ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u1ec1 m\u1eb7t, cu\u1ed1i c\u00f9ng c\u00e1c monome tr\u1ea3i qua qu\u00e1 tr\u00ecnh tr\u00f9ng h\u1ee3p \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u \u1ee9ng ph\u1ee7 b\u1ec1 m\u1eb7t.<\/p>\n

Bi\u1ebfn \u0111\u1ed5i ho\u1ea1t \u0111\u1ed9ng c\u1ee5c b\u1ed9: S\u1eed d\u1ee5ng ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc \u0111\u1ec3 h\u00ecnh th\u00e0nh c\u00e1c nh\u00f3m ch\u1ee9c n\u0103ng kh\u00e1c nhau tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c \u0111\u00edch bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t.<\/p>\n

Bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t n\u0103ng l\u01b0\u1ee3ng cao: S\u1eed d\u1ee5ng ph\u00f3ng \u0111i\u1ec7n n\u0103ng l\u01b0\u1ee3ng cao, tia c\u1ef1c t\u00edm, tia plasma, v.v. \u0111\u1ec3 bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng kh\u1ed5ng l\u1ed3 do ph\u00f3ng \u0111i\u1ec7n n\u0103ng l\u01b0\u1ee3ng cao, tia c\u1ef1c t\u00edm, tia plasma, v.v. t\u1ea1o ra \u0111\u1ec3 bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t, l\u00e0m cho b\u1ec1 m\u1eb7t c\u1ee7a ch\u00fang ho\u1ea1t \u0111\u1ed9ng. C\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch c\u1ee7a c\u00e1c h\u1ea1t v\u00e0 polyme.<\/p>\n

Bi\u1ebfn \u0111\u1ed5i ph\u1ea3n \u1ee9ng k\u1ebft t\u1ee7a: bi\u1ebfn \u0111\u1ed5i b\u1eb1ng ph\u1ea3n \u1ee9ng k\u1ebft t\u1ee7a. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y s\u1eed d\u1ee5ng hi\u1ec7u \u1ee9ng k\u1ebft t\u1ee7a \u0111\u1ec3 ph\u1ee7 b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c h\u1ea1t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u \u1ee9ng bi\u1ebfn \u0111\u1ed5i.<\/p>\n

2. \u1ee8ng d\u1ee5ng b\u1ed9t talc trong l\u0129nh v\u1ef1c nh\u1ef1a<\/p>\n

B\u1ed9t talc l\u1ea5p \u0111\u1ea7y nh\u1ef1a \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 b\u00f4i tr\u01a1n c\u1ee7a s\u1ea3n ph\u1ea9m, ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao, gi\u1ea3m m\u00e0i m\u00f2n m\u00e1y \u0111\u00fac v\u00e0 l\u00e0m cho polyme c\u1ea3i thi\u1ec7n \u0111\u1ed9 c\u1ee9ng v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng bi\u1ebfn d\u1ea1ng th\u00f4ng qua qu\u00e1 tr\u00ecnh l\u1ea5p \u0111\u1ea7y trong khi c\u01b0\u1eddng \u0111\u1ed9 va \u0111\u1eadp v\u1ec1 c\u01a1 b\u1ea3n v\u1eabn kh\u00f4ng thay \u0111\u1ed5i. N\u1ebfu \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111\u00fang c\u00e1ch, n\u00f3 c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng ch\u1ed1ng s\u1ed1c nhi\u1ec7t c\u1ee7a polyme, c\u1ea3i thi\u1ec7n \u0111\u1ed9 co ng\u00f3t khi \u0111\u00fac c\u1ee7a nh\u1ef1a, m\u00f4 \u0111un \u0111\u00e0n h\u1ed3i u\u1ed1n v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a s\u1ea3n ph\u1ea9m.<\/p>\n

\u1ee8ng d\u1ee5ng trong v\u1eadt li\u1ec7u PP: \u1ee8ng d\u1ee5ng n\u00e0y \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u r\u1ed9ng r\u00e3i nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u1ea5t. Hi\u1ec7n nay, n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c b\u1ed9 ph\u1eadn \u00f4 t\u00f4, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u1ea3n \u00f4 t\u00f4, b\u1ed9 ph\u1eadn ngo\u1ea1i vi \u0111\u1ed9ng c\u01a1, b\u1ed9 ph\u1eadn \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n, \u0111\u00e8n pha, khung g\u1ea7m, b\u00e0n \u0111\u1ea1p v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c.<\/p>\n

\u1ee8ng d\u1ee5ng trong \u00f4 t\u00f4: V\u1eadt li\u1ec7u PP c\u00f3 nhi\u1ec1u ngu\u1ed3n g\u1ed1c, m\u1eadt \u0111\u1ed9 th\u1ea5p v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i \u0111\u1ec3 c\u1ea3i thi\u1ec7n c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc c\u1ee7a ch\u00fang. N\u00f3 c\u00f3 th\u1ec3 gi\u1ea3m chi ph\u00ed, gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 gi\u1ea3m m\u1ee9c ti\u00eau th\u1ee5 nhi\u00ean li\u1ec7u m\u00e0 kh\u00f4ng l\u00e0m gi\u1ea3m c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc. V\u00ed d\u1ee5, qu\u1ea1t l\u00e0m m\u00e1t \u00f4 t\u00f4 \u0111\u01b0\u1ee3c phun v\u1eadt li\u1ec7u PP ch\u1ee9a b\u1ed9t talc kh\u00f4ng ch\u1ec9 nh\u1eb9 v\u00e0 \u00edt ti\u1ebfng \u1ed3n m\u00e0 c\u00f2n c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t.<\/p>\n","protected":false},"excerpt":{"rendered":"

B\u1ed9t talc \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nh\u1ef1a \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 c\u1ee9ng, \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u1ec1 k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 b\u00f4i tr\u01a1n c\u1ee7a s\u1ea3n ph\u1ea9m, ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao, gi\u1ea3m m\u00e0i m\u00f2n cho m\u00e1y \u0111\u00fac<\/p>\n","protected":false},"author":7,"featured_media":133099,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[852],"tags":[],"class_list":["post-133136","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\/133136"}],"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=133136"}],"version-history":[{"count":1,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/133136\/revisions"}],"predecessor-version":[{"id":133137,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/133136\/revisions\/133137"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/133099"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=133136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=133136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=133136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}