H\u00e3y th\u1eeba nh\u1eadn \u0111i. B\u1ea1n \u0111\u00e3 t\u1eebng b\u00f4i keo silicone l\u00ean k\u00ednh, kim lo\u1ea1i ho\u1eb7c nh\u1ef1a, ch\u1ec9 \u0111\u1ec3 r\u1ed3i ch\u1ee9ng ki\u1ebfn n\u00f3 bong tr\u00f3c ch\u1ec9 sau v\u00e0i ng\u00e0y. H\u1ea1n ch\u1ebf v\u1ec1 \u0111\u1ed9 b\u00e1m d\u00ednh c\u1ee7a keo silicone \u0111\u1eb7c bi\u1ec7t r\u00f5 r\u1ec7t tr\u00ean c\u00e1c b\u1ec1 m\u1eb7t c\u00f3 \u0111\u1ed9 b\u00e1m d\u00ednh th\u1ea5p. Cao su silicone l\u1ecfng mang l\u1ea1i nh\u1eefng \u01b0u \u0111i\u1ec3m \u0111\u1ed9c \u0111\u00e1o trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, nh\u01b0ng n\u00f3 c\u0169ng ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c t\u01b0\u01a1ng t\u1ef1. Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u00fang t\u00f4i s\u1ebd ph\u00e2n t\u00edch l\u00fd do t\u1ea1i sao silicone g\u1eb7p kh\u00f3 kh\u0103n, d\u1ef1a tr\u00ean nhi\u1ec1u n\u0103m th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf trong c\u00e1c d\u1ef1 \u00e1n ch\u1ed1ng th\u1ea5m. B\u1ea1n s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c c\u00e1c b\u01b0\u1edbc c\u1ee5 th\u1ec3 \u0111\u1ec3 kh\u1eafc ph\u1ee5c v\u1ea5n \u0111\u1ec1 ngay l\u1eadp t\u1ee9c.<\/p>\n
T\u1eeb m\u1ed1i n\u1ed1i thi c\u00f4ng trong ng\u00e0nh \u00f4 t\u00f4<\/a> Khi n\u00f3i \u0111\u1ebfn mi\u1ebfng \u0111\u1ec7m, silicone l\u00e0 v\u1eadt li\u1ec7u \u0111a n\u0103ng h\u00e0ng \u0111\u1ea7u. Tuy nhi\u00ean, \u0111\u1ed9 b\u00e1m d\u00ednh s\u1ebd kh\u00f4ng \u0111\u1ea1t hi\u1ec7u qu\u1ea3 n\u1ebfu kh\u00f4ng c\u00f3 b\u01b0\u1edbc chu\u1ea9n b\u1ecb b\u1ec1 m\u1eb7t. Ch\u00fang ta s\u1ebd \u0111i s\u00e2u v\u00e0o khoa h\u1ecdc b\u1ec1 m\u1eb7t, c\u00e1c ph\u01b0\u01a1ng ph\u00e1p chu\u1ea9n b\u1ecb, l\u1edbp s\u01a1n l\u00f3t v\u00e0 c\u00e1c c\u00f4ng th\u1ee9c chuy\u00ean d\u1ee5ng nh\u01b0 cao su silicone l\u1ecfng. S\u1ebd c\u00f3 c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf. Kh\u00f4ng c\u00f3 ch\u1ed7 cho ph\u1ecfng \u0111o\u00e1n.<\/p>\n Keo tr\u00e1m silicone<\/a> d\u1ef1a v\u00e0o c\u00e1c li\u00ean k\u1ebft h\u00f3a h\u1ecdc h\u00ecnh th\u00e0nh gi\u1eefa c\u00e1c chu\u1ed7i siloxan c\u1ee7a ch\u00fang v\u00e0 c\u00e1c ph\u00e2n t\u1eed ch\u1ea5t n\u1ec1n. N\u0103ng l\u01b0\u1ee3ng b\u1ec1 m\u1eb7t th\u1ea5p s\u1ebd l\u00e0m m\u1ea5t t\u00e1c d\u1ee5ng n\u00e0y. H\u00e3y ngh\u0129 \u0111\u1ebfn th\u1ee7y tinh hay polyethylene \u2014 b\u1ea3n ch\u1ea5t nh\u1eb5n b\u00f3ng, kh\u00f4ng ph\u00e2n c\u1ef1c c\u1ee7a ch\u00fang \u0111\u1ea9y l\u00f9i c\u00e1c nh\u00f3m ph\u00e2n c\u1ef1c c\u1ee7a silicone. K\u1ebft qu\u1ea3 l\u00e0 g\u00ec? T\u1ed1t nh\u1ea5t c\u0169ng ch\u1ec9 l\u00e0 c\u00e1c l\u1ef1c van der Waals y\u1ebfu \u1edbt.<\/p>\n Ch\u00fang t\u00f4i \u0111\u00e3 th\u1eed nghi\u1ec7m h\u00e0ng tr\u0103m lo\u1ea1i ch\u1ea5t k\u1ebft d\u00ednh trong ph\u00f2ng th\u00ed nghi\u1ec7m c\u1ee7a m\u00ecnh. Tr\u00ean b\u1ec1 m\u1eb7t k\u00ednh s\u1ea1ch, ch\u1ea5t k\u1ebft d\u00ednh silicon ti\u00eau chu\u1ea9n c\u00f3 \u0111\u1ed9 b\u1ec1n c\u1eaft l\u00e0 200 psi. N\u1ebfu b\u1ec1 m\u1eb7t b\u1ecb nhi\u1ec5m d\u1ea7u t\u1eeb d\u1ea5u v\u00e2n tay? \u0110\u1ed9 b\u1ec1n c\u1eaft gi\u1ea3m xu\u1ed1ng c\u00f2n 50 psi. Cao su silicon l\u1ecfng, d\u00f9 \u0111\u01b0\u1ee3c \u0111\u1ed5 hay b\u01a1m v\u00e0o, c\u0169ng c\u00f3 \u0111\u1eb7c t\u00ednh t\u01b0\u01a1ng t\u1ef1 nh\u01b0ng th\u1eddi gian \u0111\u00f4ng c\u1ee9ng nhanh h\u01a1n, do \u0111\u00f3 \u0111\u00f2i h\u1ecfi ph\u1ea3i chu\u1ea9n b\u1ecb k\u1ef9 l\u01b0\u1ee1ng h\u01a1n.<\/p>\n K\u00ednh c\u00f3 b\u1ec1 m\u1eb7t nh\u1eb5n b\u00f3ng. C\u00e1c kim lo\u1ea1i nh\u01b0 th\u00e9p kh\u00f4ng g\u1ec9 ch\u1ec9 b\u1ecb oxy h\u00f3a \u1edf m\u1ee9c t\u1ed1i thi\u1ec3u. C\u00e1c lo\u1ea1i nh\u1ef1a nh\u01b0 acrylic c\u00f3 kh\u1ea3 n\u0103ng \u0111\u1ea9y n\u01b0\u1edbc nh\u1edd c\u1ea5u tr\u00fac ph\u00e2n t\u1eed x\u1ebfp ch\u1eb7t ch\u1ebd. Silicone kh\u00f4ng th\u1ec3 \u201cl\u00e0m \u01b0\u1edbt\u201d c\u00e1c b\u1ec1 m\u1eb7t n\u00e0y. G\u00f3c \u01b0\u1edbt v\u01b0\u1ee3t qu\u00e1 90 \u0111\u1ed9 \u2014 n\u01b0\u1edbc s\u1ebd t\u1ee5 th\u00e0nh gi\u1ecdt.<\/p>\n V\u00ed d\u1ee5: Ch\u1ed1ng th\u1ea5m cho bu\u1ed3ng t\u1eafm. K\u00ednh ch\u01b0a qua x\u1eed l\u00fd? Ch\u1ea5t tr\u00e1m khe b\u1ecb bong tr\u00f3c khi \u0111\u1ed9 \u1ea9m cao<\/a>. C\u00e1ch gi\u1ea3i quy\u1ebft b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c lau b\u1eb1ng c\u1ed3n isopropyl. Nh\u01b0ng ch\u00fang ta s\u1ebd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 n\u00e0y sau.<\/p>\n PTFE (Teflon) ch\u1eb3ng th\u00e8m quan t\u00e2m \u0111\u1ebfn ch\u1ea5t k\u1ebft d\u00ednh. L\u1edbp v\u1ecf flo c\u1ee7a n\u00f3 t\u1ea1o ra s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t 18 mN\/m \u2014 trong khi silicone c\u1ea7n t\u1ed1i thi\u1ec3u 24 mN\/m. Ch\u00fang t\u00f4i \u0111\u00e3 th\u1eed d\u00e1n c\u00e1c mi\u1ebfng \u0111\u1ec7m PTFE v\u00e0o m\u00e1y b\u01a1m. Silicone nguy\u00ean ch\u1ea5t? Kh\u00f4ng c\u00f3 \u0111\u1ed9 b\u00e1m d\u00ednh n\u00e0o sau 24 gi\u1edd.<\/p>\n Cao su silicone l\u1ecfng \u0111\u01b0\u1ee3c \u0111\u00fac \u00e9p l\u00ean c\u00e1c m\u00e9p PTFE cho k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n khi x\u1eed l\u00fd b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p kh\u1eafc plasma, gi\u00fap t\u0103ng \u0111\u1ed9 b\u1ec1n l\u00ean 50 mN\/m. M\u1eb7c d\u00f9 hi\u1ebfm g\u1eb7p, nh\u01b0ng \u0111\u00e2y l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5.<\/p>\n Ch\u1ec9 m\u1ed9t gi\u1ecdt d\u1ea7u gia c\u00f4ng c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u00e1m d\u00ednh. M\u1ee1 b\u00f4i tr\u01a1n di chuy\u1ec3n, t\u1ea1o th\u00e0nh c\u00e1c r\u00e0o c\u1ea3n. B\u1ee5i b\u00e1m v\u00e0o, l\u00e0m suy y\u1ebfu c\u01a1 ch\u1ebf kh\u00f3a c\u01a1 h\u1ecdc.<\/p>\n T\u1ea1i c\u00e1c nh\u00e0 m\u00e1y, ch\u00fang ta \u0111\u00e3 ch\u1ee9ng ki\u1ebfn c\u00e1c b\u0103ng t\u1ea3i b\u1ecb h\u1ecfng do c\u1eb7n silicone t\u1eeb c\u00e1c l\u1ea7n s\u1eed d\u1ee5ng tr\u01b0\u1edbc \u0111\u00f3<\/a>. Lu\u00f4n t\u1ea9y d\u1ea7u m\u1ee1 tr\u01b0\u1edbc.<\/p>\n \u1ed0ng HDPE trong h\u1ec7 th\u1ed1ng c\u1ea5p tho\u00e1t n\u01b0\u1edbc. Ph\u1ee5 t\u00f9ng \u00f4 t\u00f4 l\u00e0m t\u1eeb polypropylene. C\u1ea3 hai \u0111\u1ec1u c\u00f3 s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t t\u1eeb 30\u201335 mN\/m. Silicone? Kh\u00f4ng th\u1ec3 n\u00e0o n\u1ebfu kh\u00f4ng qua x\u1eed l\u00fd.<\/p>\n Tr\u01b0\u1eddng h\u1ee3p th\u1ef1c t\u1ebf: S\u1eeda ch\u1eefa th\u00e2n t\u00e0u bi\u1ec3n. C\u00e1c mi\u1ebfng \u0111\u1ec7m HDPE kh\u00f4ng b\u00e1m d\u00ednh ch\u1ea5t tr\u00e1m k\u00edn cho \u0111\u1ebfn khi \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng ng\u1ecdn l\u1eeda. \u0110\u1ed9 b\u00e1m d\u00ednh t\u0103ng v\u1ecdt l\u00ean 42 mN\/m. Li\u00ean k\u1ebft v\u1eabn b\u1ec1n v\u1eefng ngay c\u1ea3 trong m\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc m\u1eb7n.<\/p>\n S\u1ea1ch s\u1ebd lu\u00f4n th\u1eafng s\u1ef1 c\u1ea7u k\u1ef3. N\u1ebfu b\u1ecf qua b\u01b0\u1edbc n\u00e0y, th\u00ec d\u00f9 d\u00f9ng lo\u1ea1i s\u01a1n l\u00f3t n\u00e0o c\u0169ng kh\u00f4ng c\u1ee9u v\u00e3n \u0111\u01b0\u1ee3c. Ch\u00fang t\u00f4i y\u00eau c\u1ea7u quy tr\u00ecnh chu\u1ea9n b\u1ecb ba b\u01b0\u1edbc: l\u00e0m s\u1ea1ch b\u1eb1ng dung m\u00f4i, ch\u00e0 nh\u00e1m, s\u1ea5y kh\u00f4.<\/p>\n \u0110\u1ed1i v\u1edbi cao su silicone l\u1ecfng trong qu\u00e1 tr\u00ecnh \u0111\u00fac, x\u1eed l\u00fd b\u1eb1ng plasma ho\u1eb7c hi\u1ec7u \u1ee9ng corona s\u1ebd thay th\u1ebf cho vi\u1ec7c ch\u00e0 nh\u00e1m. Ch\u00fang t\u00f4i \u0111\u00e3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u00e1m d\u00ednh c\u1ee7a HDPE 400% b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y. H\u00e3y th\u1eed nghi\u1ec7m tr\u00ean c\u00e1c m\u1ea3nh v\u1ee5n tr\u01b0\u1edbc. Lu\u00f4n lu\u00f4n nh\u01b0 v\u1eady.<\/p>\n R\u1eeda kim lo\u1ea1i b\u1eb1ng m\u00e1y phun \u00e1p l\u1ef1c v\u1edbi ch\u1ea5t t\u1ea9y r\u1eeda ki\u1ec1m, sau \u0111\u00f3 trung h\u00f2a. B\u1ed3n ng\u00e2m si\u00eau \u00e2m gi\u00fap h\u00f2a tan d\u1ea7u m\u1ee1 tr\u00ean nh\u1ef1a. T\u1ea1i x\u01b0\u1edfng c\u1ee7a ch\u00fang t\u00f4i, ch\u00fang t\u00f4i s\u1eed d\u1ee5ng MEK \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c v\u1ebft d\u1ea7u c\u1ee9ng \u0111\u1ea7u \u2014 tuy nhi\u00ean, ch\u1ea5t n\u00e0y d\u1ec5 ch\u00e1y.<\/p>\n M\u1eb9o chuy\u00ean nghi\u1ec7p: Che ph\u1ee7 c\u00e1c khu v\u1ef1c l\u00e2n c\u1eadn. C\u00e1c ch\u1ea5t g\u00e2y \u00f4 nhi\u1ec5m r\u1ea5t d\u1ec5 lan r\u1ed9ng.<\/p>\n L\u1edbp s\u01a1n l\u00f3t l\u00e0 c\u1ea7u n\u1ed1i gi\u1eefa c\u00e1c b\u1ec1 m\u1eb7t. Ch\u00fang t\u1ea1o l\u1edbp li\u00ean k\u1ebft silane \u2014 c\u00f3 th\u1ec3 h\u00ecnh dung nh\u01b0 m\u1ed9t lo\u1ea1i \u201cVelcro\u201d \u1edf c\u1ea5p \u0111\u1ed9 ph\u00e2n t\u1eed. Ph\u1ee7 m\u1ed9t l\u1edbp m\u1ecfng, d\u00e0y 1\u20132 mil. \u0110\u1ec3 kh\u00f4 trong 10\u201330 ph\u00fat.<\/p>\n Dow Corning 1200 OS d\u00f9ng cho k\u00ednh\/kim lo\u1ea1i. SS-4004 d\u00f9ng cho nh\u1ef1a. Nh\u1edd s\u1ea3n ph\u1ea9m n\u00e0y, ch\u00fang t\u00f4i \u0111\u00e3 t\u0103ng g\u1ea5p \u0111\u00f4i \u0111\u1ed9 b\u00e1m d\u00ednh tr\u00ean polypropylene. Cao su silicone l\u1ecfng \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi l\u1edbp s\u01a1n l\u00f3t g\u1ed1c isopropanol \u0111\u1ec3 l\u00e0m khu\u00f4n RTV.<\/p>\n Ch\u1ecdn ch\u1ea5t n\u1ec1n ph\u00f9 h\u1ee3p. Kim lo\u1ea1i? S\u1eed d\u1ee5ng s\u01a1n l\u00f3t silan. Nh\u1ef1a? C\u00e1c lo\u1ea1i polyolefin clo h\u00f3a.<\/p>\n Nghi\u00ean c\u1ee9u \u0111i\u1ec3n h\u00ecnh: K\u00ednh ch\u1eafn gi\u00f3 \u00f4 t\u00f4<\/a> mi\u1ebfng \u0111\u1ec7m. L\u1edbp s\u01a1n l\u00f3t tr\u00ean b\u1ec1 m\u1eb7t kim lo\u1ea1i t\u1ea1i \u0111\u01b0\u1eddng h\u00e0n k\u1eb9p gi\u00fap v\u1eadt li\u1ec7u 500% b\u00e1m d\u00ednh t\u1ed1t h\u01a1n trong c\u00e1c b\u00e0i ki\u1ec3m tra va ch\u1ea1m.<\/p>\n H\u00f3a h\u1ecdc kh\u00f4ng hi\u1ec7u qu\u1ea3? H\u00e3y chuy\u1ec3n sang ph\u01b0\u01a1ng ph\u00e1p v\u1eadt l\u00fd. Vi\u1ec7c ch\u00e0 nh\u00e1m t\u1ea1o ra c\u00e1c \u0111i\u1ec3m b\u00e1m d\u00ednh. C\u00e1c v\u1ebft \u0103n m\u00f2n gi\u00fap gi\u1eef ch\u1eb7t ch\u1ea5t b\u1ecbt k\u00edn b\u00ean trong.<\/p>\n K\u00ednh: S\u1eed d\u1ee5ng gi\u1ea5y nh\u00e1m c\u1ee1 400 \u0111\u1ec3 t\u1ea1o \u0111\u1ed9 nh\u00e1m vi m\u00f4. Kim lo\u1ea1i: Phun c\u00e1t b\u1eb1ng nh\u00f4m oxit c\u1ee1 80. Nh\u1ef1a: Tr\u00e1nh g\u00e2y ra v\u1ebft x\u01b0\u1edbc s\u00e2u \u2014 thay v\u00e0o \u0111\u00f3, h\u00e3y s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p h\u00e0n ng\u1ecdn l\u1eeda ho\u1eb7c plasma.<\/p>\n Trong qu\u00e1 tr\u00ecnh \u0111\u00fac ph\u1ee7 b\u1eb1ng cao su silicone l\u1ecfng, c\u00e1c g\u00f3c x\u1ea3 v\u00e0 ch\u1ea5t b\u00f4i tr\u01a1n gi\u00fap ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng k\u1eb9t c\u01a1 h\u1ecdc. Ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u00fac cao su l\u00ean c\u00e1c ph\u1ee5 ki\u1ec7n HDPE c\u00f3 ren \u2014 ch\u1ecbu \u0111\u01b0\u1ee3c \u00e1p su\u1ea5t v\u1ee1 300 psi.<\/p>\n K\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t khi k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p. M\u00e0i nh\u00e1m, s\u01a1n l\u00f3t, ph\u1ee7 l\u1edbp ch\u1ed1ng th\u1ea5m. \u0110\u1ed9 b\u1ec1n b\u00e1m d\u00ednh t\u0103ng g\u1ea5p ba l\u1ea7n. V\u00ed d\u1ee5: M\u1eb7t b\u00edch \u1ed1ng d\u1eabn HVAC. Nh\u00f4m \u0111\u01b0\u1ee3c ch\u00e0 nh\u00e1m + s\u01a1n l\u00f3t = kh\u00f4ng r\u00f2 r\u1ec9 sau nhi\u1ec1u n\u0103m.<\/p>\n Kh\u00f4ng ph\u1ea3i t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i silicone \u0111\u1ec1u gi\u1ed1ng nhau. RTV-1 d\u00f9ng cho qu\u00e1 tr\u00ecnh \u0111\u00f3ng r\u1eafn trung t\u00ednh tr\u00ean c\u00e1c lo\u1ea1i nh\u1ef1a nh\u1ea1y c\u1ea3m. RTV-2 hai th\u00e0nh ph\u1ea7n d\u00f9ng cho ch\u1ea5t l\u1ecfng silicon<\/a> \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a cao su.<\/p>\n\u0110i\u1ec1u g\u00ec g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t \u0111\u1ed9 b\u00e1m d\u00ednh c\u1ee7a keo silicone? C\u01a1 s\u1edf khoa h\u1ecdc c\u1ed1t l\u00f5i<\/h2>\n
B\u1ec1 m\u1eb7t kh\u00f4ng x\u1ed1p: Th\u1ee7y tinh, kim lo\u1ea1i v\u00e0 nh\u1ef1a<\/h3>\n
PTFE v\u00e0 c\u00e1c lo\u1ea1i polyme flo: C\u01a1n \u00e1c m\u1ed9ng t\u1ed3i t\u1ec7 nh\u1ea5t v\u1ec1 t\u00ednh ch\u1ed1ng d\u00ednh<\/h3>\n
C\u00e1c b\u1ec1 m\u1eb7t b\u1ecb \u00f4 nhi\u1ec5m: D\u1ea7u, m\u1ee1 v\u00e0 b\u1ee5i l\u00e0 nh\u1eefng t\u00e1c nh\u00e2n g\u00e2y \u00f4 nhi\u1ec5m<\/h3>\n
Nh\u1ef1a ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng: Nh\u1eefng v\u1ea5n \u0111\u1ec1 li\u00ean quan \u0111\u1ebfn HDPE v\u00e0 polypropylene<\/h3>\n
Chu\u1ea9n b\u1ecb b\u1ec1 m\u1eb7t: H\u00e0ng ph\u00f2ng th\u1ee7 \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea1n tr\u01b0\u1edbc c\u00e1c gi\u1edbi h\u1ea1n v\u1ec1 \u0111\u1ed9 b\u00e1m d\u00ednh<\/h2>\n
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D\u1ecbch v\u1ee5 l\u00e0m s\u1ea1ch chuy\u00ean s\u00e2u cho c\u00e2n c\u00f4ng nghi\u1ec7p<\/h3>\n
Ch\u1ea5t l\u00f3t: T\u0103ng c\u01b0\u1eddng \u0111\u1ed9 b\u00e1m d\u00ednh c\u1ee7a keo silicone tr\u00ean c\u00e1c b\u1ec1 m\u1eb7t kh\u00f3 b\u00e1m d\u00ednh<\/h2>\n
C\u00e1ch ch\u1ecdn v\u00e0 s\u1eed d\u1ee5ng l\u1edbp l\u00f3t ph\u00f9 h\u1ee3p<\/h3>\n
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Li\u00ean k\u1ebft c\u01a1 h\u1ecdc: T\u1ea1o b\u1ec1 m\u1eb7t nh\u00e1m \u0111\u1ec3 t\u0103ng \u0111\u1ed9 b\u00e1m<\/h2>\n
K\u1ebft h\u1ee3p ph\u01b0\u01a1ng ph\u00e1p c\u01a1 h\u1ecdc v\u1edbi ph\u01b0\u01a1ng ph\u00e1p h\u00f3a h\u1ecdc<\/h3>\n
L\u1ef1a ch\u1ecdn keo silicone chuy\u00ean d\u1ee5ng v\u00e0 cao su silicone l\u1ecfng<\/h2>\n