{"id":15893,"date":"2026-03-11T18:56:42","date_gmt":"2026-03-11T10:56:42","guid":{"rendered":"https:\/\/rysilicone.com\/?p=15893"},"modified":"2026-04-07T10:58:32","modified_gmt":"2026-04-07T02:58:32","slug":"why-your-silicone-seals-leak-in-cold-weather","status":"publish","type":"post","link":"https:\/\/rysilicone.com\/vi\/why-your-silicone-seals-leak-in-cold-weather\/","title":{"rendered":"V\u00ec sao gio\u0103ng silicon c\u1ee7a b\u1ea1n b\u1ecb r\u00f2 r\u1ec9 khi tr\u1eddi l\u1ea1nh?"},"content":{"rendered":"

Khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m m\u1ea1nh, c\u00e1c gio\u0103ng silicon trong \u0111\u1ee7 lo\u1ea1i thi\u1ebft b\u1ecb c\u00f3 th\u1ec3 b\u1eaft \u0111\u1ea7u r\u00f2 r\u1ec9. H\u1ec7 th\u1ed1ng \u00f4 t\u00f4, thi\u1ebft b\u1ecb \u0111i\u1ec1u h\u00f2a kh\u00f4ng kh\u00ed, thi\u1ebft b\u1ecb y t\u1ebf v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n ngo\u00e0i tr\u1eddi, ch\u00fang ta \u0111\u1ec1u th\u1ea5y hi\u1ec7n t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u1ef1 m\u1ed7i m\u00f9a \u0111\u00f4ng. C\u00e1c b\u1ed9 ph\u1eadn ti\u00eau chu\u1ea9n ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong th\u1eddi ti\u1ebft \u00f4n h\u00f2a \u0111\u1ed9t nhi\u00ean m\u1ea5t kh\u1ea3 n\u0103ng l\u00e0m k\u00edn khi nhi\u1ec7t \u0111\u1ed9 xu\u1ed1ng -35\u00b0C ho\u1eb7c th\u1ea5p h\u01a1n. T\u1ef7 l\u1ec7 h\u1ecfng h\u00f3c c\u1ee7a silicon th\u00f4ng th\u01b0\u1eddng c\u00f3 th\u1ec3 t\u0103ng 30\u201350% trong \u0111i\u1ec1u ki\u1ec7n l\u1ea1nh gi\u00e1 th\u1ef1c s\u1ef1.<\/p>\n\n\n\n

N\u1ebfu b\u1ea1n \u0111ang g\u1eb7p ph\u1ea3i t\u00ecnh tr\u1ea1ng r\u00f2 r\u1ec9 ho\u1eb7c mu\u1ed1n tr\u00e1nh ch\u00fang v\u00e0o m\u00f9a sau, b\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u01b0\u1edbng d\u1eabn chi ti\u1ebft l\u00fd do t\u1ea1i sao \u0111i\u1ec1u \u0111\u00f3 x\u1ea3y ra v\u00e0 c\u00e1ch kh\u1eafc ph\u1ee5c tr\u00ean th\u1ef1c t\u1ebf. Ch\u00fang t\u00f4i s\u1ea3n xu\u1ea5t c\u00e1c lo\u1ea1i gio\u0103ng n\u00e0y m\u1ed7i ng\u00e0y t\u1ea1i x\u01b0\u1edfng c\u1ee7a m\u00ecnh, v\u00e0 c\u00e1c chi ti\u1ebft d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c \u0111\u00fac k\u1ebft t\u1eeb nhi\u1ec1u n\u0103m v\u1eadn h\u00e0nh m\u00e1y \u00e9p v\u00e0 th\u1eed nghi\u1ec7m trong h\u1ed9p l\u1ea1nh.<\/p>\n\n\n\n

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

C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a gio\u0103ng silicon v\u00e0 c\u00e1c lo\u1ea1i gio\u0103ng silicon th\u00f4ng d\u1ee5ng<\/h2>\n\n\n\n

Gio\u0103ng silicon ch\u1ec9 c\u00f3 m\u1ed9t nhi\u1ec7m v\u1ee5 \u0111\u01a1n gi\u1ea3n: n\u00f3 b\u1ecb n\u00e9n gi\u1eefa hai b\u1ec1 m\u1eb7t v\u00e0 \u0111\u1ea9y ng\u01b0\u1ee3c tr\u1edf l\u1ea1i \u0111\u1ec3 b\u1ecbt k\u00edn m\u1ecdi khe h\u1edf. \u00c1p l\u1ef1c \u1ed5n \u0111\u1ecbnh \u0111\u00f3 gi\u1eef cho d\u1ea7u, kh\u00f4ng kh\u00ed ho\u1eb7c n\u01b0\u1edbc \u1edf \u0111\u00fang v\u1ecb tr\u00ed c\u1ee7a n\u00f3.<\/p>\n\n\n\n

T\u1ea1i c\u1eeda h\u00e0ng c\u1ee7a ch\u00fang t\u00f4i, ch\u00fang t\u00f4i th\u01b0\u1eddng xuy\u00ean s\u1ea3n xu\u1ea5t b\u1ed1n ki\u1ec3u d\u00e1ng ch\u00ednh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u1ee9 t\u1ef1 s\u1ea3n xu\u1ea5t:<\/p>\n\n\n\n

Ki\u1ec3u<\/td>\u0110\u1ed9 c\u1ee9ng \u0111i\u1ec3n h\u00ecnh<\/td>N\u01a1i ch\u00fang ta th\u1ea5y n\u00f3 r\u00f5 nh\u1ea5t<\/td>Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 th\u00f4ng th\u01b0\u1eddng<\/td><\/tr>
V\u00f2ng ch\u1eef O<\/td>50\u201370 B\u1edd A<\/td>M\u00e1y b\u01a1m, van, \u0111\u1ed9ng c\u01a1<\/td>-55\u00b0C \u0111\u1ebfn 200\u00b0C<\/td><\/tr>
Gio\u0103ng ph\u1eb3ng<\/td>40\u201360 Shore A<\/td>V\u1ecf b\u1ecdc, h\u1ed9p \u0111\u1ef1ng<\/td>-50\u00b0C \u0111\u1ebfn 180\u00b0C<\/td><\/tr>
Gio\u0103ng m\u00f4i<\/td>60\u201380 Shore A<\/td>Tr\u1ee5c quay<\/td>-45\u00b0C \u0111\u1ebfn 150\u00b0C<\/td><\/tr>
C\u00e1c chi ti\u1ebft \u0111\u01b0\u1ee3c \u0111\u00fac theo khu\u00f4n ri\u00eang<\/td>30\u201390 Shore A<\/td>V\u1eadt t\u01b0 y t\u1ebf, thi\u1ebft b\u1ecb y t\u1ebf<\/td>T\u00f9y thu\u1ed9c v\u00e0o h\u1ed7n h\u1ee3p.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

V\u00f2ng \u0111\u1ec7m O-ring v\u1eabn chi\u1ebfm ph\u1ea7n l\u1edbn s\u1ea3n l\u01b0\u1ee3ng c\u1ee7a ch\u00fang t\u00f4i \u2013 kho\u1ea3ng 70%. H\u00ecnh d\u1ea1ng c\u00f3 th\u1ec3 thay \u0111\u1ed5i, nh\u01b0ng nguy\u00ean t\u1eafc v\u1eabn v\u1eady: ch\u1ecdn \u0111\u00fang lo\u1ea1i v\u1eadt li\u1ec7u v\u00e0 \u0111i\u1ec1u ch\u1ec9nh l\u1ef1c \u00e9p ph\u00f9 h\u1ee3p, v\u00e0 th\u1eddi ti\u1ebft l\u1ea1nh s\u1ebd kh\u00f4ng c\u00f2n l\u00e0 v\u1ea5n \u0111\u1ec1 n\u1eefa.<\/p>\n\n\n\n

Gi\u1ea3i th\u00edch khoa h\u1ecdc: T\u1ea1i sao silicone tr\u1edf n\u00ean c\u1ee9ng v\u00e0 gi\u00f2n khi \u0111\u00f3ng b\u0103ng?<\/h2>\n\n\n\n

Silicone VMQ th\u00f4ng th\u01b0\u1eddng c\u00f3 gi\u1edbi h\u1ea1n k\u1ebft tinh \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p kho\u1ea3ng -55\u00b0C. N\u1ebfu gi\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n m\u1ee9c \u0111\u00f3, c\u00e1c chu\u1ed7i ph\u00e2n t\u1eed s\u1ebd v\u1eabn l\u1ecfng l\u1ebbo v\u00e0 linh ho\u1ea1t. N\u1ebfu gi\u1ea3m xu\u1ed1ng th\u1ea5p h\u01a1n nhi\u1ec1u, ch\u00fang s\u1ebd b\u1ecb kh\u00f3a l\u1ea1i. Gio\u0103ng s\u1ebd m\u1ea5t \u0111i \u0111\u1ed9 \u0111\u00e0n h\u1ed3i.<\/p>\n\n\n\n

M\u1ed9t v\u00e0i y\u1ebfu t\u1ed1 th\u1ef1c t\u1ebf khi\u1ebfn t\u00ecnh h\u00ecnh tr\u1edf n\u00ean t\u1ed3i t\u1ec7 h\u01a1n khi m\u00f9a \u0111\u00f4ng \u0111\u1ebfn:<\/p>\n\n\n\n

    \n
  • Silicone co l\u1ea1i nhi\u1ec1u h\u01a1n kim lo\u1ea1i ho\u1eb7c nh\u1ef1a. Khe h\u1edf gi\u1eefa c\u00e1c b\u1ed9 ph\u1eadn s\u1ebd h\u01a1i m\u1edf r\u1ed9ng trong khi l\u1edbp b\u1ecbt k\u00edn l\u1ea1i.<\/li>\n\n\n\n
  • \u0110\u1ed9 c\u1ee9ng t\u0103ng nhanh. \u1ede -45\u00b0C, ch\u1ec9 s\u1ed1 Shore A c\u00f3 th\u1ec3 t\u0103ng 5-10 \u0111i\u1ec3m. Th\u1ee9 m\u00e0 b\u1ea1n c\u1ea3m th\u1ea5y m\u1ec1m m\u1ea1i trong c\u1eeda h\u00e0ng \u0111\u1ed9t nhi\u00ean tr\u1edf n\u00ean c\u1ee9ng nh\u01b0 nh\u1ef1a.<\/li>\n\n\n\n
  • Hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng do n\u00e9n r\u1ea5t nghi\u00eam tr\u1ecdng. Ch\u00fang t\u00f4i th\u1ef1c hi\u1ec7n ki\u1ec3m tra ASTM D395 tr\u00ean m\u1ecdi l\u00f4 h\u00e0ng m\u1edbi. \u1ede nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, \u0111\u1ed9 bi\u1ebfn d\u1ea1ng c\u00f3 th\u1ec3 \u0111\u1ea1t kho\u1ea3ng 8% sau 24 gi\u1edd. \u1ede -40\u00b0C, c\u00f9ng m\u1ed9t lo\u1ea1i v\u1eadt li\u1ec7u \u0111\u00f3 c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u1ebfn 35%. N\u00f3 \u0111\u01a1n gi\u1ea3n l\u00e0 gi\u1eef nguy\u00ean tr\u1ea1ng th\u00e1i ph\u1eb3ng.<\/li>\n<\/ul>\n\n\n\n

    B\u1ea5t k\u1ef3 h\u01a1i \u1ea9m n\u00e0o \u0111\u00f3ng b\u0103ng trong r\u00e3nh \u0111\u1ec1u t\u1ea1o th\u00eam \u00e1p l\u1ef1c v\u00e0 c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c v\u1ebft n\u1ee9t. C\u00e1c b\u1ed9 ph\u1eadn chuy\u1ec3n \u0111\u1ed9ng b\u1ecb \u1ea3nh h\u01b0\u1edfng nhi\u1ec1u nh\u1ea5t v\u00ec l\u1edbp gio\u0103ng c\u1ee9ng kh\u00f4ng c\u00f2n theo k\u1ecbp chuy\u1ec3n \u0111\u1ed9ng nhanh n\u1eefa.<\/p>\n\n\n\n

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

    Nh\u1eefng b\u00e0i h\u1ecdc t\u1eeb d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t: Nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch ch\u00fang ta tr\u00e1nh ch\u00fang<\/h2>\n\n\n\n

    Qua nhi\u1ec1u n\u0103m, ch\u00fang t\u00f4i \u0111\u00e3 h\u1ecdc c\u00e1ch nh\u1eadn di\u1ec7n b\u1ed1n v\u1ea5n \u0111\u1ec1 th\u01b0\u1eddng g\u1eb7p g\u00e2y r\u1eafc r\u1ed1i trong th\u1eddi ti\u1ebft l\u1ea1nh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng v\u1ea5n \u0111\u1ec1 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i \u2013 v\u00e0 ch\u00ednh x\u00e1c c\u00e1ch ch\u00fang t\u00f4i kh\u1eafc ph\u1ee5c ch\u00fang.<\/p>\n\n\n\n

    Th\u1ee9 nh\u1ea5t: s\u1eed d\u1ee5ng VMQ ti\u00eau chu\u1ea9n khi \u1ee9ng d\u1ee5ng c\u1ea7n silicone bi\u1ebfn t\u00ednh phenyl. Lo\u1ea1i th\u00f4ng th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng t\u1ed1t \u1edf nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng -55\u00b0C t\u1ea1i c\u00e1c \u0111i\u1ec3m t\u0129nh, nh\u01b0ng vi\u1ec7c th\u00eam nh\u00f3m phenyl gi\u00fap v\u1eadt li\u1ec7u gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 d\u1ebbo dai \u0111\u1ebfn t\u1eadn -100\u00b0C. Hi\u1ec7n t\u1ea1i, ch\u00fang t\u00f4i m\u1eb7c \u0111\u1ecbnh s\u1eed d\u1ee5ng phi\u00ean b\u1ea3n phenyl cho b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng n\u00e0o c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t d\u01b0\u1edbi -30\u00b0C.<\/p>\n\n\n\n

    Th\u1ee9 hai: ch\u1ecdn \u0111\u1ed9 c\u1ee9ng qu\u00e1 cao. Nhi\u1ec1u th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt y\u00eau c\u1ea7u \u0111\u1ed9 c\u1ee9ng 70 Shore A v\u00ec c\u1ea3m gi\u00e1c ch\u1eafc ch\u1eafn. Trong \u0111i\u1ec1u ki\u1ec7n \u0111\u00f3ng b\u0103ng, \u0111\u1ed9 c\u1ee9ng qu\u00e1 cao \u0111\u00f3 l\u00e0m cho gio\u0103ng qu\u00e1 c\u1ee9ng. Ch\u00fang t\u00f4i khuy\u00ean kh\u00e1ch h\u00e0ng n\u00ean ch\u1ecdn \u0111\u1ed9 c\u1ee9ng 50-60 Shore A cho \u0111i\u1ec1u ki\u1ec7n l\u1ea1nh \u2013 n\u00f3 gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 \u0111\u00e0n h\u1ed3i l\u00e2u h\u01a1n nhi\u1ec1u.<\/p>\n\n\n\n

    Th\u1ee9 ba: chu k\u1ef3 x\u1eed l\u00fd sau \u0111\u00fac ng\u1eafn. C\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng peroxide c\u1ea7n t\u1eeb 2 \u0111\u1ebfn 4 gi\u1edd \u1edf 200\u00b0C sau khi \u0111\u00fac. Ch\u00fang t\u00f4i kh\u00f4ng bao gi\u1edd r\u00fat ng\u1eafn th\u1eddi gian \u0111\u00f3. B\u01b0\u1edbc b\u1ed5 sung n\u00e0y gi\u00fap kh\u00f3a c\u00e1c li\u00ean k\u1ebft ngang v\u00e0 gi\u1eef cho \u0111\u1ed9 bi\u1ebfn d\u1ea1ng n\u00e9n th\u1ea5p ngay c\u1ea3 \u1edf -40\u00b0C.<\/p>\n\n\n\n

    Th\u1ee9 t\u01b0: qu\u00e1 nhi\u1ec1u ch\u1ea5t \u0111\u1ed9n. Ch\u1ea5t \u0111\u1ed9n silica gi\u00fap c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n x\u00e9 nh\u01b0ng l\u1ea1i l\u00e0m gi\u1ea3m \u0111\u1ed9 d\u1ebbo \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Ch\u00fang t\u00f4i gi\u1eef m\u1ee9c ch\u1ea5t \u0111\u1ed9n \u1edf m\u1ee9c v\u1eeba ph\u1ea3i trong c\u00e1c h\u1ee3p ch\u1ea5t ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 th\u1ea5p v\u00e0 \u0111\u1ec3 polyme n\u1ec1n ch\u1ecbu ph\u1ea7n l\u1edbn t\u1ea3i tr\u1ecdng.<\/p>\n\n\n\n

    Nh\u1eefng l\u1ef1a ch\u1ecdn n\u00e0y hi\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p v\u00e0o quy tr\u00ecnh c\u1ee7a ch\u00fang t\u00f4i. Ch\u00fang h\u1ea7u nh\u01b0 kh\u00f4ng l\u00e0m t\u0103ng chi ph\u00ed nh\u01b0ng l\u1ea1i t\u1ea1o ra s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m.<\/p>\n\n\n\n

    Ki\u1ec3m tra nhanh: Li\u1ec7u gio\u0103ng c\u1ee7a b\u1ea1n c\u00f3 s\u1ed1ng s\u00f3t qua \u0111\u1ee3t r\u00e9t ti\u1ebfp theo?<\/h2>\n\n\n\n

    B\u1ea1n c\u00f3 th\u1ec3 h\u00ecnh dung \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1 m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u1ebfn thi\u1ebft b\u1ecb ph\u00f2ng th\u00ed nghi\u1ec7m. H\u00e3y th\u1eed ba b\u01b0\u1edbc sau:<\/p>\n\n\n\n

      \n
    1. Ki\u1ec3m tra b\u1eb1ng c\u00e1ch b\u00f3p. B\u00f3p m\u1ea1nh ph\u1ea7n ni\u00eam phong \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. N\u00f3 s\u1ebd b\u1eadt tr\u1edf l\u1ea1i nhanh ch\u00f3ng v\u00e0 tr\u01a1n tru.<\/li>\n\n\n\n
    2. X\u1ecbt ch\u1ed1ng \u0111\u00f4ng. L\u1ea5y m\u1ed9t lon x\u1ecbt \u1edf qu\u1ea7y \u0111\u1ed3 \u0111i\u1ec7n t\u1eed, \u1ea5n m\u1ea1nh v\u00e0o m\u00e9p lon trong m\u01b0\u1eddi gi\u00e2y, r\u1ed3i \u1ea5n l\u1ea1i l\u1ea7n n\u1eefa. N\u1ebfu lon x\u1ecbt v\u1eabn ph\u1eb3ng, th\u1eddi ti\u1ebft l\u1ea1nh s\u1ebd g\u00e2y ra s\u1ef1 c\u1ed1.<\/li>\n\n\n\n
    3. Cho v\u00e0o ng\u0103n \u0111\u00e1 qua \u0111\u00eam. N\u00e9n m\u1ed9t m\u1ea3nh nh\u1ecf 25%, cho v\u00e0o ng\u0103n \u0111\u00e1 v\u00e0 ki\u1ec3m tra \u0111\u1ed9 \u0111\u00e0n h\u1ed3i v\u00e0o s\u00e1ng h\u00f4m sau. N\u1ebfu nh\u1ecf h\u01a1n 80% th\u00ec c\u00f3 ngh\u0129a l\u00e0 v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 kh\u00f4ng b\u1ec1n.<\/li>\n<\/ol>\n\n\n\n

      \u0110\u1ed1i v\u1edbi nh\u1eefng c\u00f4ng vi\u1ec7c quan tr\u1ecdng, ch\u00fang t\u00f4i ti\u1ebfn h\u00e0nh ki\u1ec3m tra to\u00e0n di\u1ec7n m\u1eabu trong \u0111i\u1ec1u ki\u1ec7n l\u1ea1nh m\u00e0 kh\u00f4ng t\u00ednh ph\u00ed.<\/p>\n\n\n\n

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

      Nh\u1eefng c\u00e1ch th\u1ef1c s\u1ef1 ng\u0103n ch\u1eb7n r\u00f2 r\u1ec9<\/h2>\n\n\n\n

      Th\u00f4ng th\u01b0\u1eddng, ba thay \u0111\u1ed5i s\u1ebd gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 m\u1ed9t c\u00e1ch tri\u1ec7t \u0111\u1ec3.<\/p>\n\n\n\n

      V\u1eadt li\u1ec7u t\u1ed1t h\u01a1n<\/h3>\n\n\n\n
        \n
      • VMQ ti\u00eau chu\u1ea9n \u2192 lo\u1ea1i phenyl ch\u1ecbu nhi\u1ec7t th\u1ea5p (ch\u1ecbu \u0111\u01b0\u1ee3c -100\u00b0C)<\/li>\n\n\n\n
      • Chuy\u1ec3n \u0111\u1ed5i t\u1eeb phenyl silicone sang fluorosilicone khi c\u1ea7n kh\u1ea3 n\u0103ng ch\u1ed1ng d\u1ea7u.<\/li>\n<\/ul>\n\n\n\n

        Ch\u00fang t\u00f4i lu\u00f4n c\u00f3 s\u1eb5n c\u1ea3 hai lo\u1ea1i v\u00e0 c\u00f3 th\u1ec3 t\u1ea1o h\u00ecnh h\u1ea7u h\u1ebft c\u00e1c k\u00edch c\u1ee1 trong v\u00f2ng ch\u01b0a \u0111\u1ea7y hai tu\u1ea7n.<\/p>\n\n\n\n

        Thi\u1ebft k\u1ebf r\u00e3nh th\u00f4ng minh h\u01a1n<\/h3>\n\n\n\n

        M\u1ee5c ti\u00eau n\u00e9n 15\u201330%. L\u00e0m cho chi\u1ec1u r\u1ed9ng r\u00e3nh 15% r\u1ed9ng h\u01a1n \u0111\u1ec3 ch\u1eeba ch\u1ed7 cho s\u1ef1 gi\u00e3n n\u1edf. Nh\u01b0 v\u1eady s\u1ebd v\u1eabn c\u00f3 kho\u1ea3ng tr\u1ed1ng khi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng co ng\u00f3t. Th\u00eam m\u1ed9t \u0111\u01b0\u1eddng v\u00e1t nh\u1ecf \u1edf c\u00e1c c\u1ea1nh \u0111\u1ec3 gi\u1ea3m \u1ee9ng su\u1ea5t. Ch\u00fang t\u00f4i th\u01b0\u1eddng xuy\u00ean th\u1ef1c hi\u1ec7n c\u00e1c \u0111i\u1ec1u ch\u1ec9nh n\u00e0y cho kh\u00e1ch h\u00e0ng.<\/p>\n\n\n\n

        Nh\u1eefng th\u00f3i quen ph\u00f9 h\u1ee3p \u0111\u01a1n gi\u1ea3n<\/h3>\n\n\n\n

        L\u00e0m \u1ea5m gio\u0103ng v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn ti\u1ebfp x\u00fac \u0111\u1ebfn \u00edt nh\u1ea5t 10\u00b0C tr\u01b0\u1edbc khi l\u1eafp r\u00e1p. S\u1eed d\u1ee5ng m\u1ed9t l\u1edbp m\u1ee1 silicon m\u1ecfng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Ki\u1ec3m tra l\u1ea1i m\u00f4-men xo\u1eafn sau chu k\u1ef3 \u0111\u00f4ng-tan \u0111\u1ea7u ti\u00ean \u2013 c\u00e1c v\u1eadt li\u1ec7u gi\u00e3n n\u1edf v\u1edbi t\u1ed1c \u0111\u1ed9 kh\u00e1c nhau.<\/p>\n\n\n\n

        V\u00f2ng \u0111\u1ec7m O-ring LT-100 v\u00e0 gio\u0103ng ch\u1ecbu l\u1ea1nh c\u1ef1c cao c\u1ee7a ch\u00fang t\u00f4i \u0111\u00e3 tr\u1ea3i qua 500 gi\u1edd th\u1eed nghi\u1ec7m \u1edf -50\u00b0C m\u00e0 kh\u00f4ng h\u1ec1 b\u1ecb r\u00f2 r\u1ec9. Nhi\u1ec1u kh\u00e1ch h\u00e0ng hi\u1ec7n \u0111ang s\u1eed d\u1ee5ng ch\u00fang quanh n\u0103m. S\u1ef1 ch\u00eanh l\u1ec7ch gi\u00e1 th\u01b0\u1eddng ch\u1ec9 l\u00e0 8\u201312%.<\/p>\n\n\n\n

        C\u00e1ch ch\u00fang t\u00f4i ch\u1ebf t\u1ea1o c\u00e1c b\u1ed9 ph\u1eadn ch\u1ecbu l\u1ea1nh t\u1eeb \u0111\u1ea7u<\/h2>\n\n\n\n

        M\u1ed7i m\u1ebb s\u1ea3n xu\u1ea5t \u0111\u1ec1u b\u1eaft \u0111\u1ea7u v\u1edbi nguy\u00ean li\u1ec7u th\u00f4 c\u00f3 nhi\u1ec7t \u0111\u1ed9 chuy\u1ec3n pha th\u1ee7y tinh \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng. Ch\u00fang t\u00f4i \u0111i\u1ec1u ch\u1ec9nh h\u00e0m l\u01b0\u1ee3ng phenyl trong qu\u00e1 tr\u00ecnh tr\u1ed9n d\u1ef1a tr\u00ean nhi\u1ec7t \u0111\u1ed9 th\u1ea5p nh\u1ea5t m\u00e0 kh\u00e1ch h\u00e0ng mong mu\u1ed1n. Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n lu\u00f4n n\u1eb1m trong kho\u1ea3ng \u00b11\u00b0C. Qu\u00e1 tr\u00ecnh x\u1eed l\u00fd sau \u0111\u00f3ng r\u1eafn \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ea7y \u0111\u1ee7 m\u1ed7i l\u1ea7n. C\u00e1c s\u1ea3n ph\u1ea9m \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c \u0111\u01b0a th\u1eb3ng v\u00e0o h\u1ed9p l\u1ea1nh -70\u00b0C \u0111\u1ec3 ki\u1ec3m tra r\u00f2 r\u1ec9.<\/p>\n\n\n\n

        Ch\u00fang t\u00f4i c\u0169ng theo d\u00f5i \u0111\u1ed9 co r\u00fat v\u00e0 k\u1ebft qu\u1ea3 u\u1ed1n cong \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u1ee7a TR-10 tr\u00ean m\u1ecdi lo\u1ea1i h\u1ee3p ch\u1ea5t m\u1edbi. Nh\u1eefng b\u01b0\u1edbc nh\u1ecf nh\u01b0 v\u1eady gi\u00fap duy tr\u00ec hi\u1ec7u su\u1ea5t m\u00f9a \u0111\u00f4ng \u1ed5n \u0111\u1ecbnh m\u00e0 kh\u00f4ng l\u00e0m t\u0103ng chi ph\u00ed.<\/p>\n\n\n\n

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

        Nh\u1eefng c\u00e2u chuy\u1ec7n t\u1eeb c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/h2>\n\n\n\n

        M\u1ed9t nh\u00e0 m\u00e1y \u0111i\u1ec7n ngo\u00e0i tr\u1eddi \u1edf Na Uy \u0111\u00e3 chuy\u1ec3n sang s\u1eed d\u1ee5ng v\u00f2ng \u0111\u1ec7m O-ring b\u1eb1ng silicon phenyl sau khi ph\u00e1t hi\u1ec7n r\u00f2 r\u1ec9 \u1edf nhi\u1ec7t \u0111\u1ed9 -30\u00b0C v\u1edbi v\u1eadt li\u1ec7u ti\u00eau chu\u1ea9n. Sau hai m\u00f9a \u0111\u00f4ng, c\u00e1c v\u00f2ng \u0111\u1ec7m v\u1eabn ho\u1ea1t \u0111\u1ed9ng ho\u00e0n h\u1ea3o v\u00e0 chi ph\u00ed b\u1ea3o tr\u00ec gi\u1ea3m m\u1ea1nh.<\/p>\n\n\n\n

        M\u1ed9t nh\u00e0 s\u1ea3n xu\u1ea5t m\u00e1y th\u1edf y t\u1ebf c\u1ea7n c\u00e1c v\u00f2ng \u0111\u1ec7m k\u00edn m\u00f4i c\u00f3 \u0111\u1ed9 d\u1ebbo dai cao trong c\u00e1c th\u1eed nghi\u1ec7m v\u1eadn chuy\u1ec3n m\u00f9a \u0111\u00f4ng. H\u1ee3p ch\u1ea5t t\u00f9y ch\u1ec9nh 55 Shore A c\u00f9ng v\u1edbi m\u1ed9t ch\u00fat \u0111i\u1ec1u ch\u1ec9nh r\u00e3nh \u0111\u00e3 v\u01b0\u1ee3t qua th\u1eed nghi\u1ec7m \u1edf nhi\u1ec7t \u0111\u1ed9 -40\u00b0C ngay l\u1ea7n \u0111\u1ea7u ti\u00ean. Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt \u0111\u00f3 hi\u1ec7n \u0111\u00e3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n cho c\u00e1c s\u1ea3n ph\u1ea9m xu\u1ea5t kh\u1ea9u c\u1ee7a h\u1ecd.<\/p>\n\n\n\n

        M\u1ed9t nh\u00e0 th\u1ea7u x\u00e2y d\u1ef1ng h\u1ec7 th\u1ed1ng HVAC c\u1ee7a Canada g\u1eb7p v\u1ea5n \u0111\u1ec1 gio\u0103ng b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n b\u1ecb n\u1ee9t trong kho l\u1ea1nh. Vi\u1ec7c chuy\u1ec3n sang s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u c\u00f3 \u0111\u1ed9 c\u1ee9ng 45 Shore A v\u1edbi \u0111\u1ed9 b\u1ec1n x\u00e9 t\u1ed1t h\u01a1n \u0111\u00e3 gi\u1ea3m thi\u1ec3u c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u00e1t sinh t\u1eeb lo\u1ea1i 22% xu\u1ed1ng g\u1ea7n nh\u01b0 b\u1eb1ng kh\u00f4ng.<\/p>\n\n\n\n

        M\u1ed7i tr\u01b0\u1eddng h\u1ee3p \u0111\u1ec1u b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c ki\u1ec3m tra nhanh nhi\u1ec7t \u0111\u1ed9, m\u00f4i tr\u01b0\u1eddng v\u00e0 thi\u1ebft k\u1ebf r\u00e3nh.<\/p>\n\n\n\n

        C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n

        Silicone th\u00f4ng th\u01b0\u1eddng c\u00f3 ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 -40\u00b0C kh\u00f4ng?<\/strong><\/p>\n\n\n\n

        N\u00f3 c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong \u0111i\u1ec1u ki\u1ec7n t\u0129nh nh\u1eb9 v\u1edbi \u0111\u1ed9 kh\u00edt r\u00e3nh ho\u00e0n h\u1ea3o, nh\u01b0ng h\u1ea7u h\u1ebft c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf d\u01b0\u1edbi -30\u00b0C \u0111\u1ec1u c\u1ea7n phi\u00ean b\u1ea3n ch\u1ecbu nhi\u1ec7t th\u1ea5p.<\/p>\n\n\n\n

        V\u1ea5n \u0111\u1ec1 v\u1ec1 ch\u1ea5t li\u1ec7u hay v\u1ea5n \u0111\u1ec1 v\u1ec1 thi\u1ebft k\u1ebf?<\/strong><\/p>\n\n\n\n

        Th\u00f4ng th\u01b0\u1eddng l\u00e0 s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u1ea3 hai. Ngay c\u1ea3 v\u1eadt li\u1ec7u t\u1ed1t c\u0169ng s\u1ebd h\u1ecfng n\u1ebfu r\u00e3nh qu\u00e1 n\u00f4ng. Ch\u00fang t\u00f4i xem x\u00e9t b\u1ea3n v\u1ebd mi\u1ec5n ph\u00ed n\u1ebfu b\u1ea1n g\u1eedi cho ch\u00fang t\u00f4i.<\/p>\n\n\n\n

        Phenyl hay fluorosilicone \u2013 lo\u1ea1i n\u00e0o t\u1ed1t h\u01a1n?<\/strong><\/p>\n\n\n\n

        Phenyl mang l\u1ea1i \u0111\u1ed9 d\u1ebbo dai t\u1ed1t nh\u1ea5t \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Fluorosilicone c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng d\u1ea7u nh\u01b0ng kh\u00f4ng ch\u1ecbu \u0111\u01b0\u1ee3c nhi\u1ec7t \u0111\u1ed9 th\u1ea5p b\u1eb1ng. Ch\u00fang t\u00f4i s\u1ebd l\u1ef1a ch\u1ecdn lo\u1ea1i keo ph\u00f9 h\u1ee3p v\u1edbi ch\u1ea5t l\u1ecfng v\u00e0 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p nh\u1ea5t d\u1ef1 ki\u1ebfn.<\/p>\n\n\n\n

        T\u00f4i ki\u1ec3m tra c\u00e1c b\u1ed9 ph\u1eadn c\u1ee7a m\u00ecnh nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/p>\n\n\n\n

        Th\u1eed nghi\u1ec7m phun s\u01b0\u01a1ng \u0111\u00f4ng l\u1ea1nh nhanh ch\u00f3ng v\u00e0 \u0111\u00e1ng tin c\u1eady. Ho\u1eb7c th\u1ef1c hi\u1ec7n ki\u1ec3m tra n\u00e9n qua \u0111\u00eam. Ch\u00fang t\u00f4i s\u1ebd th\u1ef1c hi\u1ec7n c\u00e1c th\u1eed nghi\u1ec7m trong ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ea7y \u0111\u1ee7 mi\u1ec5n ph\u00ed cho c\u00e1c d\u1ef1 \u00e1n quan tr\u1ecdng.<\/p>\n\n\n\n

        V\u1eadt li\u1ec7u c\u1ee9ng h\u01a1n c\u00f3 gi\u00fap \u00edch trong \u0111i\u1ec1u ki\u1ec7n l\u1ea1nh kh\u00f4ng?<\/strong><\/p>\n\n\n\n

        Kh\u00f4ng \u2013 c\u00e1c lo\u1ea1i gi\u1ea5y nh\u00e1m m\u1ec1m h\u01a1n (50\u201360 Shore A) h\u1ea7u nh\u01b0 lu\u00f4n cho k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 d\u01b0\u1edbi 0 \u0111\u1ed9 C.<\/p>\n\n\n\n

        Gi\u00e1 th\u00e0nh cao h\u01a1n bao nhi\u00eau \u0111\u1ed1i v\u1edbi gio\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 th\u1ea5p?<\/strong><\/p>\n\n\n\n

        Th\u00f4ng th\u01b0\u1eddng l\u00e0 8\u201315%. Vi\u1ec7c ti\u1ebft ki\u1ec7m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng v\u00e0 chi ph\u00ed g\u1ecdi d\u1ecbch v\u1ee5 s\u1ebd nhanh ch\u00f3ng b\u00f9 \u0111\u1eafp chi ph\u00ed n\u00e0y.<\/p>\n\n\n\n

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

        Ph\u1ea7n k\u1ebft lu\u1eadn<\/h2>\n\n\n\n

        Th\u1eddi ti\u1ebft l\u1ea1nh kh\u00f4ng nh\u1ea5t thi\u1ebft d\u1eabn \u0111\u1ebfn r\u00f2 r\u1ec9. H\u1ee3p ch\u1ea5t ph\u00f9 h\u1ee3p, r\u00e3nh l\u1ecdc ch\u00ednh x\u00e1c v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t c\u1ea9n th\u1eadn s\u1ebd gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y. N\u1ebfu b\u1ea1n \u0111ang g\u1eb7p s\u1ef1 c\u1ed1 ho\u1eb7c \u0111ang l\u00ean k\u1ebf ho\u1ea1ch cho t\u01b0\u01a1ng lai, ch\u1ec9 c\u1ea7n cho ch\u00fang t\u00f4i bi\u1ebft nhi\u1ec7t \u0111\u1ed9 th\u1ea5p nh\u1ea5t, v\u1eadt li\u1ec7u l\u1ecdc b\u00ean trong v\u00e0 ph\u1ea1m vi k\u00edch th\u01b0\u1edbc. Ch\u00fang t\u00f4i s\u1ebd g\u1eedi khuy\u1ebfn ngh\u1ecb r\u00f5 r\u00e0ng v\u00e0 m\u1eabu th\u1eed mi\u1ec5n ph\u00ed trong v\u00e0i ng\u00e0y t\u1edbi.<\/p>","protected":false},"excerpt":{"rendered":"

        When the temperature really drops, silicone seals in all kinds of equipment can start to leak. Automotive systems, HVAC units, medical devices, and outdoor power gear, we see the same pattern every winter. Standard parts that worked fine in mild weather suddenly lose their seal once it hits -35\u00b0C or lower. Failure rates for ordinary […]<\/p>\n","protected":false},"author":1,"featured_media":15896,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[766],"tags":[1043],"class_list":["post-15893","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industrial-silicone","tag-silicone-seals"],"_links":{"self":[{"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/posts\/15893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/comments?post=15893"}],"version-history":[{"count":0,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/posts\/15893\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/media\/15896"}],"wp:attachment":[{"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/media?parent=15893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/categories?post=15893"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/tags?post=15893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}