{"id":14692,"date":"2024-08-02T08:37:46","date_gmt":"2024-08-02T08:37:46","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=14692"},"modified":"2024-08-02T08:46:49","modified_gmt":"2024-08-02T08:46:49","slug":"powder-coatings","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/vi\/powder-coatings\/","title":{"rendered":"Vai tr\u00f2 c\u1ee7a ba lo\u1ea1i kho\u00e1ng ch\u1ea5t trong s\u01a1n t\u0129nh \u0111i\u1ec7n"},"content":{"rendered":"

S\u01a1n t\u0129nh \u0111i\u1ec7n kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 gi\u1ea3m chi ph\u00ed m\u00e0 c\u00f2n c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 hi\u1ec7u su\u1ea5t c\u1ee7a s\u1ea3n ph\u1ea9m s\u01a1n. V\u00ed d\u1ee5, n\u00f3 c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n, ch\u1ed1ng tr\u1ea7y x\u01b0\u1edbc c\u1ee7a m\u00e0ng ph\u1ee7. N\u00f3 th\u1eadm ch\u00ed c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 v\u00f5ng c\u1ee7a s\u01a1n trong qu\u00e1 tr\u00ecnh san l\u1ea5p m\u1eb7t b\u1eb1ng. Ngo\u00e0i ra, n\u00f3 c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1eb7c t\u00ednh ch\u1ed1ng \u0103n m\u00f2n c\u1ee7a s\u01a1n t\u0129nh \u0111i\u1ec7n.<\/p>\n\n\n\n

Khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u, \u0111i\u1ec1u c\u1ea7n thi\u1ebft l\u00e0 ph\u1ea3i xem x\u00e9t c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 m\u1eadt \u0111\u1ed9, hi\u1ec7u su\u1ea5t ph\u00e2n t\u00e1n v\u00e0 ph\u00e2n b\u1ed1. N\u00f3i chung, m\u1eadt \u0111\u1ed9 c\u00e0ng cao th\u00ec \u0111\u1ed9 che ph\u1ee7 c\u1ee7a l\u1edbp s\u01a1n t\u0129nh \u0111i\u1ec7n c\u00e0ng th\u1ea5p. C\u00e1c h\u1ea1t l\u1edbn c\u00f3 xu h\u01b0\u1edbng ph\u00e2n t\u00e1n t\u1ed1t h\u01a1n c\u00e1c h\u1ea1t nh\u1ecf. N\u00ean s\u1eed d\u1ee5ng thu\u1ed1c nhu\u1ed9m h\u00f3a h\u1ecdc \u0111\u1ec3 tr\u00e1nh ph\u1ea3n \u1ee9ng v\u1edbi m\u1ed9t s\u1ed1 th\u00e0nh ph\u1ea7n nh\u1ea5t \u0111\u1ecbnh c\u1ee7a c\u00f4ng th\u1ee9c b\u1ed9t, ch\u1eb3ng h\u1ea1n nh\u01b0 ch\u1ea5t m\u00e0u. M\u00e0u c\u1ee7a thu\u1ed1c nhu\u1ed9m ph\u1ea3i l\u00e0 m\u00e0u tr\u1eafng.<\/p>\n\n\n\n

C\u00e1c v\u1eadt li\u1ec7u ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u01a1n t\u0129nh \u0111i\u1ec7n bao g\u1ed3m canxi cacbonat, \u0111\u1ed9ng h\u1ecdc axit sulfuric, b\u1ed9t talc, b\u1ed9t mica, cao lanh, silica v\u00e0 wollastonite. H\u00f4m nay ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 vai tr\u00f2 c\u1ee7a \u0110\u1ed9ng h\u1ecdc axit sunfuric, b\u1ed9t mica v\u00e0 cao lanh<\/strong> trong s\u01a1n b\u1ed9t.<\/p>\n\n\n\n

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\u1ee8ng d\u1ee5ng c\u1ee7a Bari sunfat<\/a> trong s\u01a1n b\u1ed9t<\/strong><\/h2>\n\n\n\n

C\u00f3 hai lo\u1ea1i bari sunfat<\/a> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t m\u00e0u m\u1edf r\u1ed9ng s\u01a1n: t\u1ef1 nhi\u00ean v\u00e0 t\u1ed5ng h\u1ee3p. S\u1ea3n ph\u1ea9m t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u1ed9t barit, trong khi s\u1ea3n ph\u1ea9m t\u1ed5ng h\u1ee3p \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 bari sunfat k\u1ebft t\u1ee7a.<\/p>\n\n\n\n

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Trong l\u1edbp ph\u1ee7 b\u1ed9t, bari sunfat k\u1ebft t\u1ee7a c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 san b\u1eb1ng v\u00e0 duy tr\u00ec \u0111\u1ed9 b\u00f3ng c\u1ee7a l\u1edbp ph\u1ee7. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch t\u1ed1t v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c s\u1eafc t\u1ed1. N\u00f3 gi\u00fap l\u1edbp s\u01a1n t\u0129nh \u0111i\u1ec7n \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 d\u00e0y m\u00e0ng l\u00fd t\u01b0\u1edfng trong qu\u00e1 tr\u00ecnh phun, d\u1eabn \u0111\u1ebfn t\u1ef7 l\u1ec7 ph\u1ee7 b\u1ed9t cao.<\/p>\n\n\n\n

B\u1ed9t barit ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong s\u01a1n l\u00f3t c\u00f4ng nghi\u1ec7p v\u00e0 l\u1edbp ph\u1ee7 trung gian \u00f4 t\u00f4, n\u01a1i y\u00eau c\u1ea7u \u0111\u1ed9 b\u1ec1n l\u1edbp ph\u1ee7 cao, kh\u1ea3 n\u0103ng l\u1ea5p \u0111\u1ea7y cao v\u00e0 \u0111\u1ed9 tr\u01a1 h\u00f3a h\u1ecdc cao. N\u00f3 c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c l\u1edbp s\u01a1n ph\u1ee7 c\u1ea7n \u0111\u1ed9 b\u00f3ng cao h\u01a1n.<\/p>\n\n\n\n

Trong s\u01a1n latex, b\u1ed9t barit m\u1ecbn c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t ch\u1ea5t m\u00e0u tr\u1eafng m\u1edd do c\u00f3 ch\u1ec9 s\u1ed1 kh\u00fac x\u1ea1 cao (1.637). N\u00f3 c\u00f3 th\u1ec3 thay th\u1ebf m\u1ed9t ph\u1ea7n titan dioxide trong s\u01a1n. Barium sulfate si\u00eau m\u1ecbn l\u00fd t\u01b0\u1edfng cho s\u01a1n t\u0129nh \u0111i\u1ec7n v\u00ec kh\u1ea3 n\u0103ng l\u1ea5p \u0111\u1ea7y l\u1edbn, \u0111\u1ed9 s\u00e1ng t\u1ed1t, san l\u1ea5p m\u1eb7t b\u1eb1ng tuy\u1ec7t v\u1eddi, duy tr\u00ec \u0111\u1ed9 b\u00f3ng m\u1ea1nh v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c ch\u1ea5t t\u1ea1o m\u00e0u.<\/p>\n\n\n\n

\u1ee8ng d\u1ee5ng b\u1ed9t Mica trong s\u01a1n t\u0129nh \u0111i\u1ec7n<\/strong><\/h2>\n\n\n\n

B\u1ed9t mica bao g\u1ed3m c\u00e1c silicat ph\u1ee9c t\u1ea1p v\u1edbi c\u00e1c h\u1ea1t \u1edf d\u1ea1ng v\u1ea3y. N\u00f3 cung c\u1ea5p kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t tuy\u1ec7t v\u1eddi, c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ed1ng axit v\u00e0 ki\u1ec1m. B\u1ed9t mica \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u1ea3y l\u1ecfng c\u1ee7a l\u1edbp ph\u1ee7 b\u1ed9t v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u1edbp ph\u1ee7 c\u00e1ch nhi\u1ec7t v\u00e0 ch\u1ecbu nhi\u1ec7t \u0111\u1ed9. N\u00f3 c\u0169ng c\u00f3 th\u1ec3 d\u00f9ng l\u00e0m ch\u1ea5t \u0111\u1ed9n cho b\u1ed9t k\u1ebft c\u1ea5u.<\/p>\n\n\n\n

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Trong s\u1ed1 c\u00e1c lo\u1ea1i mica, sericit c\u00f3 c\u1ea5u tr\u00fac h\u00f3a h\u1ecdc t\u01b0\u01a1ng t\u1ef1 cao lanh. N\u00f3 k\u1ebft h\u1ee3p nhi\u1ec1u \u0111\u1eb7c t\u00ednh c\u1ee7a c\u1ea3 kho\u00e1ng mica v\u00e0 \u0111\u1ea5t s\u00e9t. Khi \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong l\u1edbp ph\u1ee7, sericit c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft, kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc, \u0111\u1ed9 b\u00e1m d\u00ednh v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u00e0ng ph\u1ee7. N\u00f3 c\u0169ng t\u0103ng c\u01b0\u1eddng s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a l\u1edbp ph\u1ee7. C\u00e1c h\u1ea1t thu\u1ed1c nhu\u1ed9m c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng l\u1ecdt v\u00e0o c\u00e1c l\u1edbp xen k\u1ebd c\u1ee7a b\u1ed9t sericit, gi\u00fap duy tr\u00ec m\u00e0u s\u1eafc b\u1ec1n l\u00e2u m\u00e0 kh\u00f4ng b\u1ecb phai m\u00e0u. Ngo\u00e0i ra, b\u1ed9t sericit c\u00f2n c\u00f3 \u0111\u1eb7c t\u00ednh ch\u1ed1ng t\u1ea3o v\u00e0 ch\u1ed1ng n\u1ea5m m\u1ed1c. Do \u0111\u00f3, b\u1ed9t sericit l\u00e0 ch\u1ea5t \u0111\u1ed9n \u0111a ch\u1ee9c n\u0103ng tuy\u1ec7t v\u1eddi cho l\u1edbp ph\u1ee7 c\u00f3 t\u1ef7 l\u1ec7 chi ph\u00ed\/hi\u1ec7u qu\u1ea3 cao.<\/p>\n\n\n\n

\u1ee8ng d\u1ee5ng cao lanh trong s\u01a1n t\u0129nh \u0111i\u1ec7n<\/strong><\/h2>\n\n\n\n

Cao lanh trong s\u01a1n b\u1ed9t c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1eb7c t\u00ednh thixotropy v\u00e0 ch\u1ed1ng l\u1eafng. \u0110\u1ea5t s\u00e9t nung kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1eb7c t\u00ednh l\u01b0u bi\u1ebfn nh\u01b0ng c\u00f3 th\u1ec3 mang l\u1ea1i hi\u1ec7u \u1ee9ng m\u1edd, t\u0103ng \u0111\u1ed9 m\u1edd v\u00e0 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 tr\u1eafng, t\u01b0\u01a1ng t\u1ef1 nh\u01b0 b\u1ed9t talc. N\u00f3i chung, cao lanh c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc cao v\u00e0 kh\u00f4ng th\u00edch h\u1ee3p \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng thixotropy c\u1ee7a l\u1edbp ph\u1ee7 ho\u1eb7c chu\u1ea9n b\u1ecb l\u1edbp ph\u1ee7 k\u1ef5 n\u01b0\u1edbc. K\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a s\u1ea3n ph\u1ea9m cao lanh dao \u0111\u1ed9ng t\u1eeb 0,2 \u0111\u1ebfn 1\u03bcm. Cao lanh c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t l\u1edbn h\u01a1n c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 n\u01b0\u1edbc th\u1ea5p h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 l\u00e0m m\u1edd t\u1ed1t h\u01a1n. Ng\u01b0\u1ee3c l\u1ea1i, cao lanh c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t nh\u1ecf h\u01a1n (d\u01b0\u1edbi 1\u03bcm) th\u00edch h\u1ee3p cho l\u1edbp ph\u1ee7 b\u00e1n b\u00f3ng v\u00e0 l\u1edbp ph\u1ee7 n\u1ed9i th\u1ea5t.<\/p>\n\n\n\n

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Cao lanh, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 nh\u00f4m silicat ng\u1eadm n\u01b0\u1edbc, c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh cao lanh nung v\u00e0 cao lanh r\u1eeda n\u01b0\u1edbc d\u1ef1a tr\u00ean ph\u01b0\u01a1ng ph\u00e1p ch\u1ebf bi\u1ebfn. N\u00f3i chung, cao lanh nung c\u00f3 kh\u1ea3 n\u0103ng h\u1ea5p th\u1ee5 d\u1ea7u, \u0111\u1ed9 \u0111\u1ee5c, \u0111\u1ed9 x\u1ed1p, \u0111\u1ed9 c\u1ee9ng v\u00e0 \u0111\u1ed9 tr\u1eafng cao h\u01a1n so v\u1edbi cao lanh \u0111\u01b0\u1ee3c r\u1eeda b\u1eb1ng n\u01b0\u1edbc. Tuy nhi\u00ean, n\u00f3 c\u0169ng \u0111\u1eaft h\u01a1n.<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n quan t\u00e2m \u0111\u1ebfn vi\u1ec7c s\u1ea3n xu\u1ea5t ba lo\u1ea1i b\u1ed9t kho\u00e1ng n\u00e0y, vui l\u00f2ng li\u00ean h\u1ec7<\/strong><\/a> Epic Powder customer service staff for related production machines. <\/p>\n\n\n\n