{"id":1323,"date":"2026-09-29T16:08:06","date_gmt":"2026-09-29T08:08:06","guid":{"rendered":"https:\/\/www.daoanchemical.com\/?p=1323"},"modified":"2026-09-30T10:40:17","modified_gmt":"2026-09-30T02:40:17","slug":"optimization-of-mixing-process-unlocking-the-optimal-performance-of-zinc-oxide-in-rubber-compounds","status":"publish","type":"post","link":"https:\/\/www.daoanchemical.com\/vi\/optimization-of-mixing-process-unlocking-the-optimal-performance-of-zinc-oxide-in-rubber-compounds\/","title":{"rendered":"T\u1ed1i \u01b0u h\u00f3a qu\u00e1 tr\u00ecnh tr\u1ed9n: Khai ph\u00e1 hi\u1ec7u su\u1ea5t t\u1ed1i \u01b0u c\u1ee7a k\u1ebdm oxit trong c\u00e1c h\u1ee3p ch\u1ea5t cao su"},"content":{"rendered":"

\u00d4x\u00edt k\u1ebdm<\/a><\/strong><\/span> \u0111\u00f3ng vai tr\u00f2 l\u00e0 ph\u1ee5 gia ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i trong c\u00e1c h\u1ec7 th\u1ed1ng l\u01b0u h\u00f3a l\u01b0u hu\u1ef3nh d\u00e0nh cho cao su. N\u00f3 \u0111\u1ea3m nhi\u1ec7m nh\u1eefng vai tr\u00f2 quan tr\u1ecdng bao g\u1ed3m k\u00edch ho\u1ea1t l\u01b0u h\u00f3a, \u0111i\u1ec1u ch\u1ec9nh li\u00ean k\u1ebft ch\u00e9o v\u00e0 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t. M\u1ee9c \u0111\u1ed9 ho\u1ea1t h\u00f3a v\u00e0 tr\u1ea1ng th\u00e1i ph\u00e2n t\u00e1n c\u1ee7a n\u00f3 quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u qu\u1ea3 l\u01b0u h\u00f3a, \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a li\u00ean k\u1ebft ch\u00e9o, c\u00e1c t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u00e3o h\u00f3a c\u1ee7a h\u1ed7n h\u1ee3p cao su. Trong th\u1ef1c t\u1ebf s\u1ea3n xu\u1ea5t cao su, nhi\u1ec1u khi c\u00e1c khuy\u1ebft t\u1eadt ph\u1ed5 bi\u1ebfn nh\u01b0 l\u01b0u h\u00f3a kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, t\u00ednh ch\u1ea5t v\u1eadt l\u00fd k\u00e9m, l\u00e3o h\u00f3a nhanh v\u00e0 dao \u0111\u1ed9ng l\u1edbn v\u1ec1 hi\u1ec7u su\u1ea5t gi\u1eefa c\u00e1c m\u1ebb s\u1ea3n xu\u1ea5t kh\u00f4ng ph\u1ea3i do t\u1ef7 l\u1ec7 c\u00f4ng th\u1ee9c sai s\u00f3t. Thay v\u00e0o \u0111\u00f3, qu\u00e1 tr\u00ecnh tr\u1ed9n th\u00f4 d\u1eabn \u0111\u1ebfn ph\u00e2n t\u00e1n k\u00e9m c\u1ee7a b\u1ed9t k\u1ebdm oxit v\u00e0 thi\u1ebfu s\u1ef1 k\u00edch ho\u1ea1t t\u1ea1i b\u1ec1 m\u1eb7t giao di\u1ec7n. M\u1ed9t ph\u1ea7n l\u1edbn oxit k\u1ebdm<\/a> v\u1eabn b\u1ecb m\u1eafc k\u1eb9t b\u00ean trong h\u1ed7n h\u1ee3p cao su d\u01b0\u1edbi d\u1ea1ng c\u00e1c h\u1ea1t tr\u01a1 v\u00e0 kh\u00f4ng th\u1ec3 ph\u00e1t huy \u0111\u01b0\u1ee3c c\u00e1c ch\u1ee9c n\u0103ng mong mu\u1ed1n. Vi\u1ec7c t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh tr\u1ed9n v\u1edbi s\u1ef1 tinh ch\u1ec9nh v\u00e0 chu\u1ea9n h\u00f3a c\u00f3 th\u1ec3 khai th\u00e1c tri\u1ec7t \u0111\u1ec3 ho\u1ea1t t\u00ednh c\u1ee7a k\u1ebdm oxit, \u1ed5n \u0111\u1ecbnh m\u1ea1ng l\u01b0\u1edbi li\u00ean k\u1ebft ch\u00e9o c\u1ee7a h\u1ed7n h\u1ee3p cao su, t\u1eeb \u0111\u00f3 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng t\u1ed5ng th\u1ec3 v\u00e0 t\u00ednh \u1ed5n \u0111\u1ecbnh s\u1ea3n xu\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u cao su m\u1ed9t c\u00e1ch ti\u1ebft ki\u1ec7m chi ph\u00ed v\u00e0 hi\u1ec7u qu\u1ea3 cao.<\/p>\n

Gi\u00e1 tr\u1ecb c\u1ed1t l\u00f5i c\u1ee7a k\u1ebdm oxit trong c\u00e1c h\u1ec7 th\u1ed1ng cao su n\u1eb1m \u1edf ba kh\u00eda c\u1ea1nh: k\u00edch ho\u1ea1t t\u1ea1i b\u1ec1 m\u1eb7t giao di\u1ec7n, ki\u1ec3m so\u00e1t li\u00ean k\u1ebft ch\u00e9o v\u00e0 \u1ed5n \u0111\u1ecbnh l\u00e2u d\u00e0i. Trong qu\u00e1 tr\u00ecnh tr\u1ed9n, k\u1ebdm oxit ph\u1ea3n \u1ee9ng v\u1edbi axit stearic t\u1ea1o ra k\u1ebdm stearat c\u00f3 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch tuy\u1ec7t v\u1eddi v\u1edbi cao su. \u0110i\u1ec1u n\u00e0y ph\u00e1 v\u1ee1 r\u00e0o c\u1ea3n b\u1ec1 m\u1eb7t gi\u1eefa b\u1ed9t v\u00f4 c\u01a1 v\u00e0 ma tr\u1eadn cao su h\u1eefu c\u01a1, l\u00e0m gi\u1ea3m s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t, gi\u00fap k\u1ebdm oxit \u0111\u01b0\u1ee3c l\u00e0m \u01b0\u1edbt \u0111\u1ed3ng \u0111\u1ec1u trong to\u00e0n b\u1ed9 h\u1ed7n h\u1ee3p, \u0111\u1ed3ng th\u1eddi c\u1eaft gi\u1ea3m m\u1ea1nh n\u0103ng l\u01b0\u1ee3ng k\u00edch ho\u1ea1t c\u1ee7a c\u00e1c ph\u1ea3n \u1ee9ng l\u01b0u h\u00f3a, t\u1eeb \u0111\u00f3 k\u00edch ho\u1ea1t hi\u1ec7u qu\u1ea3 c\u00e1c ch\u1ea5t x\u00fac ti\u1ebfn l\u01b0u h\u00f3a v\u00e0 t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 l\u01b0u h\u00f3a t\u1ed5ng th\u1ec3. T\u1ea1i giai \u0111o\u1ea1n l\u01b0u h\u00f3a, c\u00e1c ion k\u1ebdm h\u00ecnh th\u00e0nh c\u00e1c trung gian ph\u1ee9c h\u1ee3p ho\u1ea1t \u0111\u1ed9ng v\u1edbi l\u01b0u hu\u1ef3nh v\u00e0 c\u00e1c ch\u1ea5t x\u00fac ti\u1ebfn, \u0111i\u1ec1u khi\u1ec3n s\u1ef1 ph\u00e2n c\u1eaft v\u00e0 t\u00e1i t\u1ed5 h\u1ee3p c\u00e1c li\u00ean k\u1ebft l\u01b0u hu\u1ef3nh. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u0103ng t\u1ef7 l\u1ec7 c\u00e1c li\u00ean k\u1ebft monosulfide v\u00e0 disulfide \u1ed5n \u0111\u1ecbnh h\u01a1n, t\u1ed1i \u01b0u h\u00f3a c\u1ea5u tr\u00fac li\u00ean k\u1ebft ch\u00e9o c\u1ee7a cao su, t\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ecfi c\u1ee7a cao su. Ngo\u00e0i ra, k\u1ebdm oxit ph\u00e2n t\u00e1n t\u1ed1t s\u1ebd trung h\u00f2a c\u00e1c t\u1ea1p ch\u1ea5t axit trong h\u1ed7n h\u1ee3p, \u1ee9c ch\u1ebf qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y nhi\u1ec7t - oxy h\u00f3a c\u1ee7a c\u00e1c chu\u1ed7i ph\u00e2n t\u1eed cao su, hi\u1ec7u qu\u1ea3 n\u00e2ng cao kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng l\u00e3o h\u00f3a c\u1ee7a s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng, k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd s\u1eed d\u1ee5ng.<\/p>\n

\"Zinc
K\u1ebdm Oxit trong H\u1ed7n H\u1ee3p Cao Su<\/figcaption><\/figure>\n

M\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn trong s\u1ea3n xu\u1ea5t l\u00e0 d\u00f9 \u0111\u00e3 d\u00f9ng \u0111\u1ee7 li\u1ec1u k\u1ebdm oxit nh\u01b0ng hi\u1ec7u su\u1ea5t l\u1ea1i kh\u00f4ng \u0111\u1ea1t y\u00eau c\u1ea7u, ph\u1ea7n l\u1edbn nguy\u00ean nh\u00e2n xu\u1ea5t ph\u00e1t t\u1eeb vi\u1ec7c ki\u1ec3m so\u00e1t quy tr\u00ecnh ch\u01b0a \u0111\u00fang c\u00e1ch. B\u1ed9t k\u1ebdm oxit c\u00f3 k\u00edch th\u01b0\u1edbc h\u1ea1t nh\u1ecf v\u00e0 n\u0103ng l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t cao. N\u00f3 d\u1ec5 d\u00e0ng h\u1ea5p th\u1ee5 h\u01a1i \u1ea9m t\u1eeb kh\u00f4ng kh\u00ed v\u00e0 t\u1ea1o th\u00e0nh c\u00e1c c\u1ee5m h\u1ea1t. L\u1ef1c c\u1eaft sinh ra trong qu\u00e1 tr\u00ecnh tr\u1ed9n th\u00f4ng th\u01b0\u1eddng kh\u00f3 c\u00f3 th\u1ec3 ph\u00e1 v\u1ee1 ho\u00e0n to\u00e0n c\u00e1c c\u1ee5m vi h\u1ea1t, khi\u1ebfn c\u00e1c h\u1ea1t tr\u01a1 c\u00f2n t\u1ed3n t\u1ea1i b\u00ean trong cao su. Nh\u1eefng h\u1ea1t n\u00e0y kh\u00f4ng th\u1ec3 tham gia v\u00e0o c\u00e1c ph\u1ea3n \u1ee9ng b\u1ec1 m\u1eb7t hay k\u00edch ho\u1ea1t l\u01b0u h\u00f3a, \u0111\u1ed3ng th\u1eddi g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng t\u1eadp trung \u1ee9ng su\u1ea5t c\u1ee5c b\u1ed9. Trong khi \u0111\u00f3, tr\u00ecnh t\u1ef1 c\u1ea5p li\u1ec7u kh\u00f4ng \u0111\u00fang c\u00e1ch s\u1ebd l\u00e0m gi\u00e1n \u0111o\u1ea1n h\u1ec7 th\u1ed1ng k\u00edch ho\u1ea1t c\u1ee7a k\u1ebdm oxit. Vi\u1ec7c b\u1ed5 sung axit stearic, ch\u1ea5t l\u00e0m m\u1ec1m l\u1ecfng v\u00e0 ch\u1ea5t \u0111\u1ed9n v\u00f4 c\u01a1 kh\u00f4ng theo th\u1ee9 t\u1ef1 ch\u00ednh x\u00e1c s\u1ebd tr\u1ef1c ti\u1ebfp c\u1ea3n tr\u1edf s\u1ef1 h\u00ecnh th\u00e0nh k\u1ebdm stearat. Ngay c\u1ea3 khi k\u1ebdm oxit \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1n t\u1ed1t, hi\u1ec7u qu\u1ea3 k\u00edch ho\u1ea1t l\u01b0u h\u00f3a c\u1ee7a n\u00f3 v\u1eabn kh\u00f4ng th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c. \u0110\u1eb7c bi\u1ec7t trong c\u00e1c c\u00f4ng th\u1ee9c ch\u1ee9a silica v\u00e0 ch\u1ea5t n\u1ed1i silane, vi\u1ec7c c\u1ea5p li\u1ec7u l\u1ed9n x\u1ed9n c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c ph\u1ea3n \u1ee9ng ph\u1ee5 v\u00e0 l\u00e0m suy gi\u1ea3m c\u1ea3 s\u1ef1 ph\u00e2n t\u00e1n ch\u1ea5t \u0111\u1ed9n l\u1eabn ho\u1ea1t h\u00f3a k\u1ebdm oxit. Nhi\u1ec7t \u0111\u1ed9 tr\u1ed9n v\u00e0 th\u00f4ng s\u1ed1 l\u1ef1c c\u1eaft kh\u00f4ng ph\u00f9 h\u1ee3p c\u0169ng g\u00e2y m\u1ea5t hi\u1ec7u su\u1ea5t. Nhi\u1ec7t \u0111\u1ed9 tr\u1ed9n qu\u00e1 th\u1ea5p d\u1eabn \u0111\u1ebfn nh\u1ef1a h\u00f3a nguy\u00ean li\u1ec7u cao su ch\u01b0a \u0111\u1ee7, c\u1ea3n tr\u1edf qu\u00e1 tr\u00ecnh l\u00e0m \u01b0\u1edbt v\u00e0 khu\u1ebfch t\u00e1n b\u1ed9t. Nhi\u1ec7t \u0111\u1ed9 qu\u00e1 cao l\u1ea1i khi\u1ebfn axit stearic bay h\u01a1i v\u00e0 c\u00e1c ch\u1ea5t ph\u1ee5 gia ph\u00e2n h\u1ee7y, d\u1eabn \u0111\u1ebfn ch\u00e1y s\u1edbm h\u1ed7n h\u1ee3p cao su v\u00e0 ng\u0103n ch\u1eb7n s\u1ef1 ho\u1ea1t h\u00f3a ho\u00e0n to\u00e0n c\u1ee7a k\u1ebdm oxit. Ngo\u00e0i ra, t\u1ef7 l\u1ec7 kh\u00f4ng c\u00e2n \u0111\u1ed1i gi\u1eefa k\u1ebdm oxit v\u00e0 axit stearic, c\u0169ng nh\u01b0 l\u1ef1c c\u1eaft y\u1ebfu t\u1eeb thi\u1ebft b\u1ecb c\u00e0ng l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam t\u00ecnh tr\u1ea1ng ho\u1ea1t h\u00f3a k\u00e9m v\u00e0 ph\u00e2n t\u00e1n kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a k\u1ebdm oxit.<\/p>\n

Chi\u1ebfn l\u01b0\u1ee3c c\u1ed1t l\u00f5i \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a hi\u1ec7u su\u1ea5t c\u1ee7a k\u1ebdm oxit l\u00e0 lo\u1ea1i b\u1ecf hi\u1ec7n t\u01b0\u1ee3ng t\u1ee5 t\u1eadp b\u1ed9t, thi\u1ebft l\u1eadp c\u00e1c ph\u1ea3n \u1ee9ng b\u1ec1 m\u1eb7t hi\u1ec7u qu\u1ea3, ph\u1ed1i h\u1ee3p ch\u00ednh x\u00e1c c\u00e1c v\u00f9ng nhi\u1ec7t \u0111\u1ed9 v\u00e0 l\u1ef1c c\u1eaft, \u0111\u1ed3ng th\u1eddi chu\u1ea9n h\u00f3a nh\u1ecbp c\u1ea5p li\u1ec7u. \u0110i\u1ec1u n\u00e0y bi\u1ebfn vi\u1ec7c \u0111\u01b0a k\u1ebdm oxit v\u00e0o t\u1eeb \u0111\u01a1n thu\u1ea7n tr\u1ed9n v\u1eadt l\u00fd sang k\u00edch ho\u1ea1t h\u00f3a h\u1ecdc b\u1ec1 m\u1eb7t \u0111\u1ea7y \u0111\u1ee7. Tr\u01b0\u1edbc khi s\u1ea3n xu\u1ea5t, c\u1ea7n ti\u1ebfn h\u00e0nh x\u1eed l\u00fd s\u01a1 b\u1ed9 b\u1ed9t. \u0110\u1ed1i v\u1edbi k\u1ebdm oxit b\u1ecb v\u00f3n \u1ea9m, c\u1ea7n nghi\u1ec1n v\u00e0 s\u00e0ng qua l\u01b0\u1edbi 80\u2013100 mesh. Trong m\u00f4i tr\u01b0\u1eddng s\u1ea3n xu\u1ea5t c\u00f3 \u0111\u1ed9 \u1ea9m cao, s\u1ea5y kh\u00f4 \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p t\u1eeb 60\u201380\u00b0C c\u00f3 th\u1ec3 lo\u1ea1i b\u1ecf h\u01a1i \u1ea9m b\u1ec1 m\u1eb7t \u0111\u00e3 h\u1ea5p th\u1ee5, gi\u1ea3m thi\u1ec3u c\u00e1c \u0111i\u1ec3m tr\u1eafng v\u00f3n c\u1ee5c ngay t\u1eeb ngu\u1ed3n. V\u1edbi c\u00e1c t\u00ecnh hu\u1ed1ng s\u1ea3n xu\u1ea5t cao c\u1ea5p, c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn k\u1ebdm oxit ho\u1ea1t t\u00ednh cao \u0111\u1ec3 ti\u1ebfp t\u1ee5c n\u00e2ng cao hi\u1ec7u qu\u1ea3 k\u00edch ho\u1ea1t v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee9c gi\u1ea3m li\u1ec1u l\u01b0\u1ee3ng m\u00e0 v\u1eabn duy tr\u00ec hi\u1ec7u su\u1ea5t t\u1ed1t. Quy tr\u00ecnh c\u1ea5p li\u1ec7u ph\u1ea3i tu\u00e2n th\u1ee7 tr\u00ecnh t\u1ef1 chu\u1ea9n h\u00f3a: nh\u1ef1a h\u00f3a ho\u00e0n to\u00e0n nguy\u00ean li\u1ec7u cao su, tr\u1ed9n s\u01a1 b\u1ed9 axit stearic, c\u1ea5p t\u1eebng \u0111\u1ee3t k\u1ebdm oxit, ch\u1ea5t \u0111\u1ed9n v\u00f4 c\u01a1, ch\u1ea5t l\u00e0m m\u1ec1m l\u1ecfng, r\u1ed3i m\u1edbi b\u1ed5 sung h\u1ec7 l\u01b0u h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Vi\u1ec7c b\u1ed5 sung axit stearic tr\u01b0\u1edbc ti\u00ean s\u1ebd t\u1ea1o ra m\u00f4i tr\u01b0\u1eddng ph\u1ea3n \u1ee9ng \u0111\u1ed3ng nh\u1ea5t. Ngay khi k\u1ebdm oxit \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o, k\u1ebdm stearat s\u1ebd h\u00ecnh th\u00e0nh nhanh ch\u00f3ng, t\u1ed1i \u0111a h\u00f3a ho\u1ea1t t\u00ednh c\u1ee7a b\u1ed9t. Tuy\u1ec7t \u0111\u1ed1i kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea5p \u0111\u1ed3ng th\u1eddi k\u1ebdm oxit v\u1edbi c\u00e1c ch\u1ea5t l\u01b0u h\u00f3a v\u00e0 ch\u1ea5t x\u00fac ti\u1ebfn nh\u1eb1m tr\u00e1nh hi\u1ec7n t\u01b0\u1ee3ng ch\u00e1y s\u1edbm do n\u1ed3ng \u0111\u1ed9 c\u1ee5c b\u1ed9 qu\u00e1 cao. \u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng th\u1ee9c ch\u1ee9a silica, n\u00ean ho\u00e0n t\u1ea5t ph\u1ea3n \u1ee9ng n\u1ed1i silane v\u1edbi silica tr\u01b0\u1edbc khi c\u1ea5p k\u1ebdm oxit, nh\u1eb1m gi\u1ea3m c\u00e1c ph\u1ea3n \u1ee9ng ph\u1ee5 gi\u1eefa k\u1ebdm oxit v\u00e0 silane v\u1ed1n ti\u00eau hao ch\u1ea5t n\u1ed1i.<\/p>\n

Ki\u1ec3m so\u00e1t tinh ch\u1ec9nh v\u1edbi \u0111i\u1ec1u ch\u1ec9nh nhi\u1ec7t \u0111\u1ed9 ph\u00e2n \u0111o\u1ea1n v\u00e0 l\u1ef1c c\u1eaft ph\u00f9 h\u1ee3p \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng xuy\u00ean su\u1ed1t chu tr\u00ecnh tr\u1ed9n. T\u1ea1i giai \u0111o\u1ea1n nh\u1ef1a h\u00f3a, nhi\u1ec7t \u0111\u1ed9 duy tr\u00ec \u1edf m\u1ee9c 70\u201385\u00b0C v\u1edbi t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh th\u1ea5p \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o nh\u1ef1a h\u00f3a tri\u1ec7t \u0111\u1ec3 nguy\u00ean li\u1ec7u cao su v\u00e0 h\u00ecnh th\u00e0nh m\u1ed9t ma tr\u1eadn cao su \u0111\u1ed3ng nh\u1ea5t li\u00ean t\u1ee5c, t\u1ea1o \u0111i\u1ec1u ki\u1ec7n rheological thu\u1eadn l\u1ee3i cho qu\u00e1 tr\u00ecnh l\u00e0m \u01b0\u1edbt b\u1ed9t. Trong giai \u0111o\u1ea1n k\u00edch ho\u1ea1t v\u00e0 ph\u00e2n t\u00e1n sau khi c\u1ea5p k\u1ebdm oxit, nhi\u1ec7t \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh \u1edf m\u1ee9c 85\u201395\u00b0C v\u1edbi l\u1ef1c c\u1eaft t\u0103ng v\u1eeba ph\u1ea3i \u0111\u1ec3 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n th\u00edch h\u1ee3p cho ph\u1ea3n \u1ee9ng ph\u1ee9c h\u1ee3p gi\u1eefa axit stearic v\u00e0 k\u1ebdm oxit, \u0111\u1ed3ng th\u1eddi ph\u00e1 v\u1ee1 c\u00e1c c\u1ee5m vi h\u1ea1t. Th\u1eddi gian tr\u1ed9n tinh khi\u1ebft cho giai \u0111o\u1ea1n n\u00e0y ph\u1ea3i kh\u00f4ng d\u01b0\u1edbi 90 gi\u00e2y \u0111\u1ec3 \u0111\u1ee7 th\u1eddi gian cho ph\u1ea3n \u1ee9ng b\u1ec1 m\u1eb7t v\u00e0 ph\u00e2n t\u00e1n. Trong giai \u0111o\u1ea1n \u0111\u1ed3ng nh\u1ea5t h\u00f3a \u1edf giai \u0111o\u1ea1n tr\u1ed9n sau, nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t d\u01b0\u1edbi 110\u00b0C \u0111\u1ec3 tr\u00e1nh ch\u00e1y s\u1edbm v\u00e0 ph\u1ea3n \u1ee9ng tr\u01b0\u1edbc c\u1ee7a c\u00e1c ch\u1ea5t x\u00fac ti\u1ebfn. Sau khi \u0111\u1ed5 li\u1ec7u, ti\u1ebfn h\u00e0nh 3\u20135 l\u1ea7n c\u00e1n ch\u1eb7t \u0111\u1ec3 ti\u1ebfp t\u1ee5c lo\u1ea1i b\u1ecf gradient n\u1ed3ng \u0111\u1ed9 c\u1ee5c b\u1ed9 v\u00e0 n\u00e2ng cao \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u t\u1ed5ng th\u1ec3. Thay v\u00ec c\u1ea5p li\u1ec7u kh\u1ed1i m\u1ed9t l\u1ea7n nh\u01b0 truy\u1ec1n th\u1ed1ng, b\u1ed9t \u0111\u01b0\u1ee3c b\u1ed5 sung th\u00e0nh t\u1eebng ph\u1ea7n nh\u1ecf, l\u1eb7p l\u1ea1i v\u1edbi t\u1ed1c \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh, gi\u00fap b\u1ed9t d\u1ea7n \u0111\u01b0\u1ee3c bao b\u1ecdc v\u00e0 l\u00e0m \u01b0\u1edbt b\u1edfi cao su, ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng l\u01b0u h\u00f3a kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u do t\u00edch t\u1ee5 c\u1ee5c b\u1ed9 k\u1ebdm oxit v\u00e0 ph\u1ea3n \u1ee9ng ch\u01b0a ho\u00e0n to\u00e0n.<\/p>\n

T\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh ph\u1ea3i \u0111\u01b0\u1ee3c ph\u1ed1i h\u1ee3p ch\u1eb7t ch\u1ebd v\u1edbi thi\u1ebft k\u1ebf c\u00f4ng th\u1ee9c v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng chu\u1ea9n h\u00f3a \u0111\u1ec3 t\u1ed1i \u0111a h\u00f3a hi\u1ec7u qu\u1ea3 c\u1ee7a k\u1ebdm oxit. Trong c\u00e1c c\u00f4ng th\u1ee9c cao su th\u00f4ng th\u01b0\u1eddng, t\u1ef7 l\u1ec7 phr ph\u1ed5 bi\u1ebfn gi\u1eefa k\u1ebdm oxit v\u00e0 axit stearic dao \u0111\u1ed9ng t\u1eeb 4:1 \u0111\u1ebfn 5:1. D\u1ea3i s\u1ea3n xu\u1ea5t th\u1ef1c nghi\u1ec7m n\u00e0y \u0111\u1ea3m b\u1ea3o t\u1ea1o \u0111\u1ee7 k\u1ebdm stearat, gi\u1ea3m l\u01b0\u1ee3ng axit t\u1ef1 do d\u01b0 th\u1eeba v\u00e0 ng\u0103n ng\u1eeba l\u00e3ng ph\u00ed k\u1ebdm oxit. \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ee3p ch\u1ea5t cao su \u0111\u1ed9 \u0111\u1ea7y cao, t\u1ef7 l\u1ec7 n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh nh\u1eb9 nh\u00e0ng t\u00f9y theo y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng. K\u1ebdm oxit ho\u1ea1t t\u00ednh v\u1edbi h\u00e0m l\u01b0\u1ee3ng th\u1ea5p h\u01a1n c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c s\u1ea3n ph\u1ea9m trong su\u1ed1t, th\u00e0nh m\u1ecfng nh\u1eb1m c\u00e2n b\u1eb1ng gi\u1eefa hi\u1ec7u su\u1ea5t c\u01a1 h\u1ecdc v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t. Vi\u1ec7c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n xu\u1ea5t h\u00e0ng ng\u00e0y t\u1eadp trung v\u00e0o s\u1ef1 ph\u00e2n t\u00e1n \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a h\u1ed7n h\u1ee3p, qu\u00e1 tr\u00ecnh l\u01b0u h\u00f3a \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u su\u1ea5t nh\u1ea5t qu\u00e1n. C\u00e1c h\u1ee3p ch\u1ea5t cao su \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a c\u1ea7n kh\u00f4ng c\u00f3 c\u00e1c \u0111\u1ed1m tr\u1eafng v\u00e0 t\u1ea1p ch\u1ea5t d\u1ea1ng h\u1ea1t, \u0111\u01b0\u1eddng cong l\u01b0u h\u00f3a m\u1ecbn, m\u1eadt \u0111\u1ed9 li\u00ean k\u1ebft ngang \u0111\u1ed3ng \u0111\u1ec1u, c\u1ea3i thi\u1ec7n r\u00f5 r\u1ec7t c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u00e3o h\u00f3a, \u0111\u1ed3ng th\u1eddi gi\u1ea3m m\u1ea1nh s\u1ef1 bi\u1ebfn \u0111\u1ed5i gi\u1eefa c\u00e1c m\u1ebb s\u1ea3n xu\u1ea5t. \u0110\u1ed3ng th\u1eddi, c\u00e1c quy tr\u00ecnh v\u1eadn h\u00e0nh chu\u1ea9n h\u00f3a c\u1ea7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 x\u1eed l\u00fd s\u01a1 b\u1ed9, n\u1ea1p li\u1ec7u, ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 tr\u1ed9n \u0111\u1ec1u th\u1ed1ng nh\u1ea5t. Thi\u1ebft b\u1ecb c\u1ea7n \u0111\u01b0\u1ee3c ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 c\u1eaft \u0111\u01b0\u1ee3c hi\u1ec7u ch\u1ec9nh \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng l\u1ef1c c\u1eaft kh\u00f4ng \u0111\u1ee7 do thi\u1ebft b\u1ecb xu\u1ed1ng c\u1ea5p, \u0111\u1ea3m b\u1ea3o duy tr\u00ec v\u00e0 \u1ed5n \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u1ee7a k\u1ebdm oxit.<\/p>\n

T\u00f3m l\u1ea1i, m\u1ee9c tr\u1ea7n hi\u1ec7u su\u1ea5t c\u1ee7a k\u1ebdm oxit trong c\u00e1c h\u1ee3p ch\u1ea5t cao su kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o li\u1ec1u l\u01b0\u1ee3ng n\u1ea1p li\u1ec7u m\u00e0 ph\u1ee5 thu\u1ed9c v\u00e0o vi\u1ec7c ph\u1ed1i h\u1ee3p tinh t\u1ebf trong qu\u00e1 tr\u00ecnh tr\u1ed9n. C\u00e1c ph\u01b0\u01a1ng th\u1ee9c tr\u1ed9n th\u00f4 truy\u1ec1n th\u1ed1ng d\u1eabn \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng k\u00e9m hi\u1ec7u qu\u1ea3 l\u1edbn ho\u1ea1t t\u00ednh c\u1ee7a k\u1ebdm oxit v\u00e0 l\u00e3ng ph\u00ed hi\u1ec7u su\u1ea5t, h\u1ea1n ch\u1ebf kh\u1ea3 n\u0103ng n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng cao su. Qu\u00e1 tr\u00ecnh x\u1eed l\u00fd s\u01a1 b\u1ed9 b\u1ed9t gi\u00fap lo\u1ea1i b\u1ecf c\u00e1c khi\u1ebfm khuy\u1ebft v\u1ed1n c\u00f3; chu\u1ed7i n\u1ea1p li\u1ec7u t\u1ed1i \u01b0u x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng k\u00edch ho\u1ea1t hi\u1ec7u qu\u1ea3 cao; ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 v\u00e0 l\u1ef1c c\u1eaft t\u1eebng \u0111o\u1ea1n ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u ph\u1ea3n \u1ee9ng; ph\u1ed1i h\u1ee3p c\u00f4ng th\u1ee9c \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a; v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng to\u00e0n di\u1ec7n cung c\u1ea5p c\u00e1c bi\u1ec7n ph\u00e1p b\u1ea3o v\u1ec7. Nh\u1eefng bi\u1ec7n ph\u00e1p n\u00e0y gi\u1ea3i quy\u1ebft c\u00e1c \u0111i\u1ec3m ngh\u1ebdn nh\u01b0 ph\u00e2n t\u00e1n k\u1ebdm oxit k\u00e9m, k\u00edch ho\u1ea1t kh\u00f4ng \u0111\u1ee7 v\u00e0 hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng th\u1ea5p. Kh\u00f4ng l\u00e0m t\u0103ng chi ph\u00ed nguy\u00ean li\u1ec7u v\u00e0 s\u1ea3n xu\u1ea5t, c\u00e1c ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i c\u1ee7a k\u1ebdm oxit trong vi\u1ec7c k\u00edch ho\u1ea1t l\u01b0u h\u00f3a, \u0111i\u1ec1u ti\u1ebft li\u00ean k\u1ebft ngang v\u00e0 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t v\u1eabn \u0111\u01b0\u1ee3c ph\u00e1t huy tri\u1ec7t \u0111\u1ec3. \u0110i\u1ec1u n\u00e0y gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 \u0111\u1ed3ng \u0111\u1ec1u v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m cao su, \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec1u m\u1ee5c ti\u00eau c\u00f9ng l\u00fac l\u00e0 n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng, t\u0103ng hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1ea3m chi ph\u00ed trong s\u1ea3n xu\u1ea5t cao su.<\/p>","protected":false},"excerpt":{"rendered":"

K\u1ebdm oxit \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t ph\u1ee5 gia ch\u1ee9c n\u0103ng c\u1ed1t l\u00f5i trong c\u00e1c h\u1ec7 th\u1ed1ng l\u01b0u h\u00f3a b\u1eb1ng l\u01b0u hu\u1ef3nh d\u00e0nh cho cao su. N\u00f3 \u0111\u1ea3m nhi\u1ec7m nh\u1eefng nhi\u1ec7m v\u1ee5 then ch\u1ed1t nh\u01b0 k\u00edch ho\u1ea1t qu\u00e1 tr\u00ecnh l\u01b0u h\u00f3a, \u0111i\u1ec1u ch\u1ec9nh m\u1ee9c \u0111\u1ed9 li\u00ean k\u1ebft ngang v\u00e0 c\u1ea3i thi\u1ec7n t\u00ednh \u1ed5n \u0111\u1ecbnh nhi\u1ec7t. M\u1ee9c \u0111\u1ed9 ho\u1ea1t h\u00f3a c\u0169ng nh\u01b0 tr\u1ea1ng th\u00e1i ph\u00e2n t\u00e1n c\u1ee7a n\u00f3 quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp hi\u1ec7u su\u1ea5t l\u01b0u h\u00f3a, \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t c\u1ee7a li\u00ean k\u1ebft ngang, c\u00e1c \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng l\u00e3o h\u00f3a c\u1ee7a h\u1ed7n h\u1ee3p cao su. Trong th\u1ef1c t\u1ebf s\u1ea3n xu\u1ea5t cao su, nhi\u1ec1u khi\u1ebfm khuy\u1ebft th\u01b0\u1eddng g\u1eb7p nh\u01b0 [\u2026]<\/p>","protected":false},"author":1,"featured_media":1327,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1323","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-overview"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts\/1323","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/comments?post=1323"}],"version-history":[{"count":0,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/posts\/1323\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/media\/1327"}],"wp:attachment":[{"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/media?parent=1323"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/categories?post=1323"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.daoanchemical.com\/vi\/wp-json\/wp\/v2\/tags?post=1323"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}