{"id":15006,"date":"2025-03-07T06:11:22","date_gmt":"2025-03-07T06:11:22","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=15006"},"modified":"2025-03-07T06:11:29","modified_gmt":"2025-03-07T06:11:29","slug":"research-on-the-application-of-ultrafine-barium-sulfate-in-water-based-epoxy-ester-primer","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/vi\/research-on-the-application-of-ultrafine-barium-sulfate-in-water-based-epoxy-ester-primer\/","title":{"rendered":"Nghi\u00ean c\u1ee9u \u1ee9ng d\u1ee5ng Bari sulfat si\u00eau m\u1ecbn trong s\u01a1n l\u00f3t Epoxy Ester g\u1ed1c n\u01b0\u1edbc"},"content":{"rendered":"

Bari sunfat c\u00f3 t\u00ednh tr\u01a1 h\u00f3a h\u1ecdc tuy\u1ec7t v\u1eddi, tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang cao v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 d\u1ea7u th\u1ea5p, l\u00e0m cho n\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ch\u1ed1ng \u0103n m\u00f2n<\/a> L\u1edbp ph\u1ee7. M\u00e0ng s\u01a1n c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng axit v\u00e0 ki\u1ec1m t\u1ed1t, \u0111\u1ed9 nh\u1edbt th\u1ea5p v\u00e0 \u0111\u1ed9 ph\u1eb3ng m\u1ecbn.<\/p>\n\n\n\n

Tuy nhi\u00ean, ch\u1ea5t \u0111\u1ed9n v\u00f4 c\u01a1 c\u00f3 th\u1ec3 c\u00f3 v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch giao di\u1ec7n v\u1edbi nh\u1ef1a h\u1eefu c\u01a1, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt l\u00fd v\u00e0 h\u00f3a h\u1ecdc cu\u1ed1i c\u00f9ng c\u1ee7a m\u00e0ng s\u01a1n. \u0110\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch, ch\u1ea5t \u0111\u1ed9n v\u00f4 c\u01a1 th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n

\"\"
Bari sulfat si\u00eau m\u1ecbn<\/em><\/figcaption><\/figure>\n\n\n\n

V\u00ec c\u00e1c ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh b\u1ec1 m\u1eb7t kh\u00e1c nhau c\u00f3 ch\u1ee9c n\u0103ng ri\u00eang bi\u1ec7t, n\u00ean vi\u1ec7c l\u1ef1a ch\u1ecdn ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c nhau. M\u1ed9t nghi\u00ean c\u1ee9u so s\u00e1nh \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh b\u1eb1ng c\u00e1ch th\u1eed nghi\u1ec7m c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc th\u00f4ng th\u01b0\u1eddng, kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc ban \u0111\u1ea7u, kh\u1ea3 n\u0103ng ch\u1ed1ng phun mu\u1ed1i, kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc kh\u1eed ion \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, kh\u1ea3 n\u0103ng ch\u1ed1ng axit sunfuric 0,1 mol\/L v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng natri hydroxit 0,1 mol\/L c\u1ee7a m\u00e0ng s\u01a1n.<\/p>\n\n\n\n

1. Qu\u00e1 tr\u00ecnh th\u1ef1c nghi\u1ec7m<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Qu\u00e1 tr\u00ecnh chu\u1ea9n b\u1ecb:<\/strong><\/p>\n\n\n\n

(1) Th\u00eam nh\u1ef1a este epoxy v\u00e0 ch\u1ea5t l\u00e0m kh\u00f4 g\u1ed1c n\u01b0\u1edbc theo tr\u00ecnh t\u1ef1, khu\u1ea5y \u1edf t\u1ed1c \u0111\u1ed9 400-600 v\u00f2ng\/ph\u00fat \u1edf t\u1ed1c \u0111\u1ed9 th\u1ea5p. Sau \u0111\u00f3, th\u00eam ch\u1ea5t trung h\u00f2a DMEA v\u00e0 ti\u1ebfp t\u1ee5c khu\u1ea5y \u1edf t\u1ed1c \u0111\u1ed9 th\u1ea5p.
(2) D\u1ea7n d\u1ea7n th\u00eam n\u01b0\u1edbc v\u00e0o t\u1eebng l\u01b0\u1ee3ng nh\u1ecf \u0111\u1ec3 nh\u0169 h\u00f3a, \u0111i\u1ec1u ch\u1ec9nh t\u1ed1c \u0111\u1ed9 kho\u1ea3ng 1000 v\u00f2ng\/ph\u00fat d\u1ef1a tr\u00ean qu\u00e1 tr\u00ecnh nh\u0169 h\u00f3a.
(3) Sau khi nh\u0169 h\u00f3a, th\u00eam ch\u1ea5t ph\u00e2n t\u00e1n v\u00e0 ch\u1ea5t ph\u00e1 b\u1ecdt theo tr\u00ecnh t\u1ef1, \u0111\u1ea3m b\u1ea3o ph\u00e2n t\u00e1n \u0111\u1ec1u.
(4) Th\u00eam mu\u1ed9i than, khu\u1ea5y \u1edf t\u1ed1c \u0111\u1ed9 th\u1ea5p v\u00e0 \u0111\u1eady n\u1eafp sau khi th\u00eam t\u1ea5t c\u1ea3 c\u00e1c v\u1eadt li\u1ec7u. Ph\u00e2n t\u00e1n \u1edf t\u1ed1c \u0111\u1ed9 kho\u1ea3ng 1200 v\u00f2ng\/ph\u00fat, sau \u0111\u00f3 th\u00eam bari sunfat v\u00e0 stronti crom v\u00e0ng. Ti\u1ebfp t\u1ee5c ph\u00e2n t\u00e1n tr\u01b0\u1edbc khi th\u00eam t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n c\u00f2n l\u1ea1i \u0111\u1ec3 ph\u00e2n t\u00e1n th\u00eam.
(5) Cho h\u1ea1t zirconium v\u00e0o nghi\u1ec1n \u1edf t\u1ed1c \u0111\u1ed9 3000-3500 v\u00f2ng\/ph\u00fat trong 1 gi\u1edd, \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 m\u1ecbn c\u1ee7a dao c\u1ea1o cho ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n

2. K\u1ebft qu\u1ea3 th\u1ef1c nghi\u1ec7m<\/strong><\/h2>\n\n\n\n

2.1 So s\u00e1nh hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1c lo\u1ea1i Bari sulfat si\u00eau m\u1ecbn kh\u00e1c nhau<\/strong><\/h3>\n\n\n\n

C\u00e1c t\u00ednh ch\u1ea5t v\u1eadt l\u00fd c\u01a1 b\u1ea3n c\u1ee7a bari sunfat si\u00eau m\u1ecbn \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m theo GB\/T<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u00a037041-2018<\/strong>\u00a0ti\u00eau chu\u1ea9n, v\u1edbi k\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n \u1edf B\u1ea3ng 2.<\/p>\n\n\n\n

Ba ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh b\u1ec1 m\u1eb7t kh\u00e1c nhau \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh b\u1ed9t bari sunfat. \u0110\u1ed9 tr\u1eafng, k\u00edch th\u01b0\u1edbc h\u1ea1t v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 kh\u00e1c c\u1ee7a s\u1ea3n ph\u1ea9m \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh v\u1eabn t\u01b0\u01a1ng t\u1ef1 nh\u01b0 b\u1ed9t ban \u0111\u1ea7u. \u0110\u1ed9 h\u1ea5p th\u1ee5 d\u1ea7u gi\u1ea3m 1 \u0111i\u1ec3m, nh\u01b0ng m\u1ee9c gi\u1ea3m kh\u00f4ng \u0111\u00e1ng k\u1ec3. \u0110i\u1ec1u n\u00e0y l\u00e0 do t\u00e1c nh\u00e2n li\u00ean k\u1ebft \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t \u0111i\u1ec1u ch\u1ec9nh kh\u00f4ng \u1ea3nh h\u01b0\u1edfng nhi\u1ec1u \u0111\u1ebfn \u0111\u1ed9 h\u1ea5p th\u1ee5 d\u1ea7u c\u1ee7a b\u1ed9t.<\/p>\n\n\n\n

B\u1ed1n lo\u1ea1i ch\u1ea5t \u0111\u1ed9n bari sunfat \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o d\u1ef1a tr\u00ean c\u00f4ng th\u1ee9c trong B\u1ea3ng 1 v\u00e0 hi\u1ec7u su\u1ea5t \u1ee9ng d\u1ee5ng c\u1ee7a ch\u00fang trong s\u01a1n l\u00f3t epoxy este g\u1ed1c n\u01b0\u1edbc \u0111\u01b0\u1ee3c so s\u00e1nh.<\/p>\n\n\n\n

2.2 Ki\u1ec3m tra hi\u1ec7u su\u1ea5t th\u00f4ng th\u01b0\u1eddng<\/strong><\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Khi bari sulfat bi\u1ebfn t\u00ednh v\u1edbi c\u00e1c t\u00e1c nh\u00e2n kh\u00e1c nhau \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u01a1n l\u00f3t epoxy este g\u1ed1c n\u01b0\u1edbc, \u0111\u1ed9 ph\u00e2n t\u00e1n c\u1ee7a n\u00f3 v\u1eabn \u1ed5n \u0111\u1ecbnh. N\u00f3 \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u s\u1ea3n ph\u1ea9m l\u00e0 10 \u00b5m trong c\u00f9ng th\u1eddi gian nghi\u1ec1n. \u0110i\u1ec1u n\u00e0y l\u00e0 do n\u00f3 \u0111\u00e3 l\u00e0 m\u1ed9t trong nh\u1eefng ch\u1ea5t \u0111\u1ed9n kho\u00e1ng phi kim lo\u1ea1i ph\u00e2n t\u00e1n nhi\u1ec1u nh\u1ea5t, \u0111\u1ec3 l\u1ea1i kh\u00f4ng gian h\u1ea1n ch\u1ebf cho vi\u1ec7c c\u1ea3i ti\u1ebfn th\u00eam th\u00f4ng qua vi\u1ec7c bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t.<\/p>\n\n\n\n

V\u1ec1 \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 b\u00e1m d\u00ednh, bari sunfat bi\u1ebfn t\u00ednh b\u1ec1 m\u1eb7t kh\u00f4ng cho th\u1ea5y s\u1ef1 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 so v\u1edbi b\u1ed9t ban \u0111\u1ea7u. S\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 c\u1ee9ng gi\u1eefa c\u00e1c ch\u1ea5t \u0111\u1ed9n kh\u00e1c nhau ch\u1ee7 y\u1ebfu ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 c\u1ee9ng Mohs c\u1ee7a ch\u00fang, v\u1edbi bari sunfat \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 \u1edf m\u1ee9c 3, \u0111\u01b0\u1ee3c coi l\u00e0 trung b\u00ecnh. V\u00ec n\u00f3 th\u01b0\u1eddng kh\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 c\u1ee9ng c\u1ee7a m\u00e0ng s\u01a1n, n\u00ean vi\u1ec7c bi\u1ebfn t\u00ednh c\u00f3 \u00edt t\u00e1c d\u1ee5ng trong kh\u00eda c\u1ea1nh n\u00e0y.<\/p>\n\n\n\n

V\u1ec1 \u0111\u1ed9 b\u00f3ng, bari sunfat bi\u1ebfn t\u00ednh c\u00f3 hi\u1ec7u su\u1ea5t t\u01b0\u01a1ng t\u1ef1 nh\u01b0 b\u1ed9t ban \u0111\u1ea7u. \u0110i\u1ec1u n\u00e0y ch\u1ee7 y\u1ebfu l\u00e0 do kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 d\u1ea7u c\u1ee7a n\u00f3 g\u1ea7n nh\u01b0 kh\u00f4ng thay \u0111\u1ed5i, d\u1eabn \u0111\u1ebfn c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u00f3ng t\u1ed1i thi\u1ec3u.<\/p>\n\n\n\n

V\u1ec1 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh khi l\u01b0u tr\u1eef, bari sulfat bi\u1ebfn t\u00ednh b\u1eb1ng t\u00e1c nh\u00e2n li\u00ean k\u1ebft titanat v\u00e0 silan epoxy b\u1ecb th\u00f4 \u0111i, trong khi b\u1ed9t ban \u0111\u1ea7u v\u00e0 bari sulfat bi\u1ebfn t\u00ednh b\u1eb1ng alkyl silan kh\u00f4ng g\u1eb7p ph\u1ea3i v\u1ea5n \u0111\u1ec1 n\u00e0y.<\/p>\n\n\n\n

2.3 Ki\u1ec3m tra hi\u1ec7u su\u1ea5t ch\u1ed1ng \u0103n m\u00f2n<\/strong><\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

So v\u1edbi b\u1ed9t ban \u0111\u1ea7u, bari sunfat bi\u1ebfn t\u00ednh b\u1eb1ng t\u00e1c nh\u00e2n li\u00ean k\u1ebft titanat cho th\u1ea5y kh\u1ea3 n\u0103ng ch\u1ed1ng axit v\u00e0 n\u01b0\u1edbc \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n

    \n
  • Kh\u1ea3 n\u0103ng kh\u00e1ng axit t\u0103ng t\u1eeb 14 ng\u00e0y l\u00ean 25 ng\u00e0y.<\/li>\n\n\n\n
  • Kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu v\u1edbi n\u01b0\u1edbc kh\u1eed ion \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n t\u1eeb 17 ng\u00e0y l\u00ean 32 ng\u00e0y.<\/li>\n\n\n\n
  • Kh\u1ea3 n\u0103ng kh\u00e1ng ki\u1ec1m gi\u1ea3m nh\u1eb9.<\/li>\n\n\n\n
  • Kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc v\u00e0 ch\u1ed1ng mu\u1ed1i ban \u0111\u1ea7u v\u1eabn kh\u00f4ng thay \u0111\u1ed5i.<\/li>\n<\/ul>\n\n\n\n

    Tuy nhi\u00ean, bari sulfat bi\u1ebfn t\u00ednh b\u1eb1ng alkyl silane v\u00e0 epoxy silane kh\u00f4ng cho th\u1ea5y s\u1ef1 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3, m\u1ed9t s\u1ed1 t\u00ednh ch\u1ea5t th\u1eadm ch\u00ed c\u00f2n gi\u1ea3m nh\u1eb9. \u0110i\u1ec1u n\u00e0y l\u00e0 do c\u00e1c t\u00e1c nh\u00e2n gh\u00e9p silane ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o qu\u00e1 tr\u00ecnh th\u1ee7y ph\u00e2n \u0111\u1ec3 t\u1ea1o th\u00e0nh nh\u00f3m hydroxyl, li\u00ean k\u1ebft v\u1edbi c\u00e1c nh\u00f3m hydroxyl tr\u00ean b\u1ec1 m\u1eb7t kho\u00e1ng ch\u1ea5t. V\u00ec bari sulfat c\u00f3 h\u00e0m l\u01b0\u1ee3ng hydroxyl th\u1ea5p n\u00ean hi\u1ec7u \u1ee9ng bi\u1ebfn t\u00ednh y\u1ebfu.<\/p>\n\n\n\n

    M\u1eb7t kh\u00e1c, c\u00e1c t\u00e1c nh\u00e2n gh\u00e9p titanat t\u1ea1o th\u00e0nh li\u00ean k\u1ebft h\u00f3a h\u1ecdc v\u1edbi ch\u1ea5t \u0111\u1ed9n v\u00f4 c\u01a1 th\u00f4ng qua c\u00e1c nh\u00f3m alkoxy, t\u1ea1o ra m\u1ed9t l\u1edbp \u0111\u01a1n ho\u1ea1t \u0111\u1ed9ng h\u1eefu c\u01a1 t\u1ea1i giao di\u1ec7n v\u00f4 c\u01a1-h\u1eefu c\u01a1. \u0110i\u1ec1u n\u00e0y c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch gi\u1eefa bari sulfat v\u00e0 nh\u1ef1a h\u1eefu c\u01a1, t\u0103ng c\u01b0\u1eddng \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng axit v\u00e0 n\u01b0\u1edbc c\u1ee7a l\u1edbp ph\u1ee7.<\/p>\n\n\n\n

    3. K\u1ebft lu\u1eadn<\/h3>\n\n\n\n

    Bari sunfat c\u00f3 nh\u1eefng \u01b0u \u0111i\u1ec3m nh\u01b0 tr\u1ecdng l\u01b0\u1ee3ng ri\u00eang cao, h\u1ea1t d\u00e0y \u0111\u1eb7c v\u00e0 h\u1ea5p th\u1ee5 d\u1ea7u th\u1ea5p, d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n v\u00e0 b\u00e1m d\u00ednh t\u1ed1t. Tuy nhi\u00ean, vi\u1ec7c s\u1eeda \u0111\u1ed5i b\u1ec1 m\u1eb7t kh\u00f4ng c\u1ea3i thi\u1ec7n \u0111\u01b0\u1ee3c nhi\u1ec1u t\u00ednh ch\u1ea5t n\u00e0y.<\/p>\n\n\n\n

    V\u00ec bari sunfat c\u00f3 \u0111\u1ed9 c\u1ee9ng Mohs l\u00e0 3 n\u00ean kh\u00f4ng th\u00edch h\u1ee3p \u0111\u1ec3 t\u0103ng \u0111\u1ed9 c\u1ee9ng c\u1ee7a m\u00e0ng s\u01a1n. Ngo\u00e0i ra, do h\u00e0m l\u01b0\u1ee3ng hydroxyl th\u1ea5p n\u00ean vi\u1ec7c bi\u1ebfn t\u00ednh b\u1eb1ng ch\u1ea5t k\u1ebft d\u00ednh silan kh\u00f4ng hi\u1ec7u qu\u1ea3, d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u0103ng hi\u1ec7u su\u1ea5t t\u1ed1i thi\u1ec3u.<\/p>\n\n\n\n

    Trong s\u1ed1 c\u00e1c s\u1eeda \u0111\u1ed5i \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m, c\u00e1c t\u00e1c nh\u00e2n li\u00ean k\u1ebft titanate \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t. Khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u1edbp s\u01a1n l\u00f3t epoxy este, ch\u00fang t\u0103ng c\u01b0\u1eddng \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng axit v\u00e0 n\u01b0\u1edbc, khi\u1ebfn ch\u00fang tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n c\u1ee7a l\u1edbp ph\u1ee7.<\/p>\n\n\n\n

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