{"id":15816,"date":"2026-02-28T16:23:56","date_gmt":"2026-02-28T08:23:56","guid":{"rendered":"https:\/\/rysilicone.com\/?p=15816"},"modified":"2026-04-07T11:12:51","modified_gmt":"2026-04-07T03:12:51","slug":"the-yellowing-truth-why-transparent-silicone-fails-in-outdoor-applications","status":"publish","type":"post","link":"https:\/\/rysilicone.com\/vi\/the-yellowing-truth-why-transparent-silicone-fails-in-outdoor-applications\/","title":{"rendered":"S\u1ef1 th\u1eadt v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng ng\u1ea3 v\u00e0ng: T\u1ea1i sao silicone trong su\u1ed1t l\u1ea1i kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng ngo\u00e0i tr\u1eddi?"},"content":{"rendered":"

Trong h\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf, kh\u00f4ng r\u01b0\u1eddm r\u00e0 n\u00e0y, ch\u00fang t\u00f4i s\u1ebd ti\u1ebft l\u1ed9 ch\u00ednh x\u00e1c l\u00fd do t\u1ea1i sao silicone trong su\u1ed1t kh\u00f4ng b\u1ecb \u1ed1 v\u00e0ng l\u1ea1i chuy\u1ec3n sang m\u00e0u v\u00e0ng chanh nh\u1ea1t sau 6-12 th\u00e1ng d\u01b0\u1edbi \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi th\u1ef1c s\u1ef1 c\u1ee7a California v\u00e0 l\u00e0m th\u1ebf n\u00e0o c\u00e1c k\u1ef9 s\u01b0, nh\u00e0 thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m v\u00e0 th\u01b0\u01a1ng hi\u1ec7u c\u1ee7a CMF cu\u1ed1i c\u00f9ng c\u00f3 th\u1ec3 ch\u1ec9 \u0111\u1ecbnh lo\u1ea1i LSR c\u1ea5p quang h\u1ecdc th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c m\u00f4i tr\u01b0\u1eddng tia c\u1ef1c t\u00edm cao, ven bi\u1ec3n v\u00e0 \u0111\u00f4 th\u1ecb trong nhi\u1ec1u n\u0103m.<\/p>\n\n\n\n

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

Quan ni\u1ec7m sai l\u1ea7m t\u1ed1n k\u00e9m v\u1eabn \u0111ang th\u1ed1ng tr\u1ecb c\u00e1c b\u00e0i \u0111\u00e1nh gi\u00e1 CMF<\/h2>\n\n\n\n

Trong nhi\u1ec1u n\u0103m, c\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u00e3 qu\u1ea3ng b\u00e1 silicone kh\u00f4ng b\u1ecb \u1ed1 v\u00e0ng nh\u01b0 l\u00e0 gi\u1ea3i ph\u00e1p t\u1ed1i \u01b0u cho c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf c\u1ea7n c\u00e1c b\u1ed9 ph\u1eadn trong su\u1ed1t nh\u01b0 pha l\u00ea v\u00e0 gi\u1eef \u0111\u01b0\u1ee3c \u0111\u1ed9 trong su\u1ed1t \u0111\u00f3. H\u00e3y tham d\u1ef1 b\u1ea5t k\u1ef3 bu\u1ed5i \u0111\u00e1nh gi\u00e1 CMF n\u00e0o \u1edf San Francisco, Boston ho\u1eb7c Seattle v\u00e0 b\u1ea1n s\u1ebd nghe th\u1ea5y c\u00f9ng m\u1ed9t l\u1eddi ch\u00e0o m\u1eddi: \u201c\u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng b\u1ea1ch kim<\/a>, \u201dM\u1ef1c LSR ch\u1ea5t l\u01b0\u1ee3ng quang h\u1ecdc \u2013 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 trong su\u1ed1t v\u0129nh vi\u1ec5n.\u201d<\/p>\n\n\n\n

Tuy nhi\u00ean, trong \u0111i\u1ec1u ki\u1ec7n tia c\u1ef1c t\u00edm cao \u1edf California\u2014\u0111\u1eb7c bi\u1ec7t l\u00e0 h\u01a1n 300 ng\u00e0y n\u1eafng g\u1eaft li\u00ean t\u1ee5c t\u1eeb Los Angeles \u0111\u1ebfn khu v\u1ef1c V\u1ecbnh San Francisco\u2014c\u00e1c lo\u1ea1i d\u00e2y \u0111eo \u0111\u1ed3ng h\u1ed3 th\u00f4ng minh trong su\u1ed1t, b\u1ed9 khu\u1ebfch t\u00e1n \u00e1nh s\u00e1ng s\u00e2n v\u01b0\u1eddn v\u00e0 v\u1ecf tai nghe ngo\u00e0i tr\u1eddi th\u01b0\u1eddng xuy\u00ean chuy\u1ec3n t\u1eeb trong su\u1ed1t nh\u01b0 n\u01b0\u1edbc sang m\u00e0u v\u00e0ng nh\u1ea1t trong v\u00f2ng 6-12 th\u00e1ng. Hi\u1ec7n t\u01b0\u1ee3ng ng\u1ea3 v\u00e0ng c\u1ee7a silicon trong su\u1ed1t kh\u00f4ng ch\u1ec9 l\u00e0 v\u1ea5n \u0111\u1ec1 th\u1ea9m m\u1ef9; n\u00f3 c\u00f2n b\u00e1o hi\u1ec7u s\u1ef1 xu\u1ed1ng c\u1ea5p nghi\u00eam tr\u1ecdng h\u01a1n: gi\u00f2n, m\u1ea5t \u0111\u1ed9 \u0111\u00e0n h\u1ed3i v\u00e0 gi\u1ea3m \u0111\u00e1ng k\u1ec3 kh\u1ea3 n\u0103ng truy\u1ec1n \u00e1nh s\u00e1ng, l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n

Sau h\u01a1n 15 n\u0103m s\u1ea3n xu\u1ea5t LSR s\u1ed1 l\u01b0\u1ee3ng l\u1edbn cho c\u00e1c th\u01b0\u01a1ng hi\u1ec7u B\u1eafc M\u1ef9, ch\u00fang t\u00f4i \u0111\u00e3 ch\u1ee9ng ki\u1ebfn nh\u1eefng l\u1ed7i t\u01b0\u01a1ng t\u1ef1 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y \u1edf Trung Qu\u1ed1c, Vi\u1ec7t Nam v\u00e0 M\u1ef9. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 l\u00fd thuy\u1ebft. \u0110\u00e2y l\u00e0 s\u1ef1 th\u1eadt tr\u00ean d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t m\u00e0 c\u00e1c t\u00e0i li\u1ec7u qu\u1ea3ng c\u00e1o kh\u00f4ng bao gi\u1edd \u0111\u1ec1 c\u1eadp \u0111\u1ebfn.<\/p>\n\n\n\n

Ph\u00e2n t\u00edch chuy\u00ean s\u00e2u v\u1ec1 H\u00f3a h\u1ecdc: Ph\u1ea3n \u1ee9ng c\u1ed9ng h\u1ee3p so v\u1edbi ph\u1ea3n \u1ee9ng ng\u01b0ng t\u1ee5<\/h2>\n\n\n\n

T\u1ea1i sao ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f3ng r\u1eafn b\u1eb1ng ph\u1ea3n \u1ee9ng c\u1ed9ng (b\u1ea1ch kim) l\u1ea1i \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng trong c\u00e1c \u1ee9ng d\u1ee5ng quang h\u1ecdc?<\/h3>\n\n\n\n

C\u1ea5u tr\u00fac x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a silicon\u2014chu\u1ed7i Si-O-Si\u2014th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t trong nh\u1eefng li\u00ean k\u1ebft b\u1ec1n v\u1eefng nh\u1ea5t v\u1edbi tia c\u1ef1c t\u00edm trong h\u00f3a h\u1ecdc polymer. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao quan ni\u1ec7m sai l\u1ea7m n\u00e0y v\u1eabn t\u1ed3n t\u1ea1i. V\u1ea5n \u0111\u1ec1 n\u1eb1m \u1edf c\u00e1c chu\u1ed7i nh\u00e1nh v\u00e0 t\u1ea5t c\u1ea3 nh\u1eefng th\u1ee9 kh\u00e1c \u0111\u01b0\u1ee3c th\u00eam v\u00e0o trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f3ng r\u1eafn b\u1eb1ng ph\u1ea3n \u1ee9ng c\u1ed9ng (hydrosilylation x\u00fac t\u00e1c b\u1eb1ng b\u1ea1ch kim) l\u00e0 l\u1ef1a ch\u1ecdn kh\u00f4ng th\u1ec3 tranh c\u00e3i cho ch\u1ea5t t\u1ea1o m\u00e0u LSR ch\u1ea5t l\u01b0\u1ee3ng quang h\u1ecdc. Kh\u00f4ng c\u00f3 s\u1ea3n ph\u1ea9m ph\u1ee5 c\u00f3 t\u00ednh axit, l\u01b0\u1ee3ng ch\u1ea5t bay h\u01a1i t\u1ed1i thi\u1ec3u v\u00e0 m\u00e0u s\u1eafc ban \u0111\u1ea7u s\u1ea1ch nh\u1ea5t khi m\u1ecdi th\u1ee9 ho\u00e0n h\u1ea3o. Nh\u01b0ng s\u1ef1 ho\u00e0n h\u1ea3o r\u1ea5t hi\u1ebfm.<\/p>\n\n\n\n

\u0110\u1ed9 tinh khi\u1ebft c\u1ee7a ch\u1ea5t x\u00fac t\u00e1c b\u1ea1ch kim l\u00e0 y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t. Ch\u00fang t\u00f4i \u0111\u00e3 th\u1eed nghi\u1ec7m c\u00e1c ch\u1ea5t x\u00fac t\u00e1c t\u1eeb 99,9% % \u0111\u1ebfn 99,99% % Pt. S\u1ef1 kh\u00e1c bi\u1ec7t th\u1ec3 hi\u1ec7n r\u00f5 qua m\u00e0u v\u00e0ng nh\u1ea1t ngay khi v\u1eeba ra kh\u1ecfi khu\u00f4n \u2013 ch\u1ec9 nh\u00ecn th\u1ea5y \u0111\u01b0\u1ee3c d\u01b0\u1edbi \u00e1nh s\u00e1ng ban ng\u00e0y D65 nh\u01b0ng \u0111\u1ee7 \u0111\u1ec3 b\u1eaft \u0111\u1ea7u qu\u00e1 tr\u00ecnh ng\u1ea3 v\u00e0ng. Ngay c\u1ea3 m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf ch\u1ea5t \u1ee9c ch\u1ebf ho\u1eb7c l\u01b0\u1ee3ng methylhydrosiloxane d\u01b0 th\u1eeba (ch\u1ea5t li\u00ean k\u1ebft ngang Si-H) c\u0169ng s\u1ebd t\u1ea1o ra c\u00e1c ch\u1ea5t t\u1ea1o m\u00e0u th\u00f4ng qua c\u00e1c ph\u1ea3n \u1ee9ng ph\u1ee5 g\u1ed1c t\u1ef1 do d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a tia c\u1ef1c t\u00edm. Trong m\u1ed9t \u0111\u1ee3t s\u1ea3n xu\u1ea5t n\u0103m 2024 cho m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u thi\u1ebft b\u1ecb \u0111eo cao c\u1ea5p, vi\u1ec7c s\u1eed d\u1ee5ng qu\u00e1 li\u1ec1u 2% % ch\u1ea5t li\u00ean k\u1ebft ngang trong h\u1ed7n h\u1ee3p A\/B t\u1ef7 l\u1ec7 50:1 \u0111\u00e3 khi\u1ebfn c\u00e1c b\u1ed9 ph\u1eadn b\u1ecb ng\u1ea3 v\u00e0ng r\u00f5 r\u1ec7t ch\u1ec9 sau 800 gi\u1edd s\u1eed d\u1ee5ng \u2013 v\u1eabn n\u1eb1m trong th\u1eddi h\u1ea1n b\u1ea3o h\u00e0nh 12 th\u00e1ng ngo\u00e0i tr\u1eddi.<\/p>\n\n\n\n

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

Nh\u1eefng nh\u01b0\u1ee3c \u0111i\u1ec3m ch\u1ebft ng\u01b0\u1eddi c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p l\u00e0m kh\u00f4 b\u1eb1ng ng\u01b0ng t\u1ee5 b\u1ecb v\u1ea1ch tr\u1ea7n.<\/h3>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f3ng r\u1eafn b\u1eb1ng ng\u01b0ng t\u1ee5 (s\u1eed d\u1ee5ng peroxide ho\u1eb7c ch\u1ea5t x\u00fac t\u00e1c thi\u1ebfc) v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c b\u1ed9 ph\u1eadn ngo\u00e0i tr\u1eddi c\u00f3 gi\u00e1 th\u00e0nh th\u1ea5p. Th\u1ef1c t\u1ebf l\u00e0:<\/p>\n\n\n\n

T\u00ednh n\u0103ng<\/td>Ph\u1ea3n \u1ee9ng c\u1ed9ng (Platinum)<\/td>Ph\u01b0\u01a1ng ph\u00e1p \u0111\u00f3ng r\u1eafn b\u1eb1ng ng\u01b0ng t\u1ee5 (Peroxide\/Thi\u1ebfc)<\/td><\/tr>
s\u1ea3n ph\u1ea9m ph\u1ee5<\/td>Kh\u00f4ng c\u00f3<\/td>C\u00f3 t\u00ednh axit (axit axetic, r\u01b0\u1ee3u)<\/td><\/tr>
M\u00e0u ban \u0111\u1ea7u<\/td>Trong su\u1ed1t nh\u01b0 n\u01b0\u1edbc<\/td>Th\u01b0\u1eddng c\u00f3 m\u00e0u v\u00e0ng nh\u1ea1t.<\/td><\/tr>
\u0110\u1ed9 \u1ed5n \u0111\u1ecbnh tia c\u1ef1c t\u00edm<\/td>Tuy\u1ec7t v\u1eddi (v\u1edbi quy tr\u00ecnh x\u1eed l\u00fd sau \u0111i\u1ec1u tr\u1ecb th\u00edch h\u1ee3p)<\/td>K\u00e9m \u2013 \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh oxy h\u00f3a<\/td><\/tr>
G\u1ee3i \u00fd ngo\u00e0i tr\u1eddi<\/td>\u0110\u01b0\u1ee3c \u01b0a chu\u1ed9ng v\u00ec t\u00ednh trong su\u1ed1t<\/td>Tr\u00e1nh s\u1eed d\u1ee5ng cho c\u00e1c s\u1ea3n ph\u1ea9m trong su\u1ed1t c\u00f3 tia c\u1ef1c t\u00edm cao.<\/td><\/tr>
Th\u1eddi gian h\u1ecfng h\u00f3c \u0111i\u1ec3n h\u00ecnh<\/td>C\u00f3 th\u1ec3 \u0111\u1ea1t h\u01a1n 3000 gi\u1edd bay QUV.<\/td>D\u01b0\u1edbi 1000 gi\u1edd ph\u01a1i n\u1eafng \u1edf California<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Ch\u00fang t\u00f4i \u0111\u00e3 ng\u1eebng cung c\u1ea5p c\u00e1c lo\u1ea1i k\u00ednh trong su\u1ed1t \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng peroxide cho b\u1ea5t k\u1ef3 \u1ee9ng d\u1ee5ng ngo\u00e0i tr\u1eddi n\u00e0o sau m\u1ed9t d\u1ef1 \u00e1n chi\u1ebfu s\u00e1ng c\u1ea3nh quan n\u0103m 2022 \u1edf Arizona, n\u01a1i m\u1ed9t s\u1ed1 b\u1ed9 ph\u1eadn b\u1ecb \u1ed1 v\u00e0ng v\u00e0 n\u1ee9t n\u1ebb ch\u1ec9 trong v\u00f2ng ch\u01b0a \u0111\u1ea7y b\u1ed1n th\u00e1ng.<\/p>\n\n\n\n

M\u1eb9o s\u1ea3n xu\u1ea5t \u0111\u00e3 thay \u0111\u1ed5i m\u1ecdi th\u1ee9<\/h3>\n\n\n\n

Ngay c\u1ea3 v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng b\u1ea1ch kim cao c\u1ea5p nh\u1ea5t, sau khi b\u1ea3o d\u01b0\u1ee1ng<\/a> \u0110i\u1ec1u n\u00e0y l\u00e0 kh\u00f4ng th\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng. 4 gi\u1edd \u1edf 200 \u00b0C d\u01b0\u1edbi ch\u00e2n kh\u00f4ng s\u1ebd lo\u1ea1i b\u1ecf c\u00e1c siloxan v\u00f2ng D4\u2013D10, n\u1ebfu kh\u00f4ng ch\u00fang s\u1ebd di chuy\u1ec3n l\u00ean b\u1ec1 m\u1eb7t v\u00e0 b\u1ecb oxy h\u00f3a th\u00e0nh c\u00e1c c\u1ea5u tr\u00fac gi\u1ed1ng quinone m\u00e0u v\u00e0ng.<\/p>\n\n\n\n

V\u1ea5n \u0111\u1ec1 di c\u01b0: Kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng do ch\u00ednh silicon g\u00e2y ra.<\/h2>\n\n\n\n

S\u1ef1 di chuy\u1ec3n s\u1eafc t\u1ed1 so v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng \u1ed1 v\u00e0ng silicon th\u1ef1c s\u1ef1<\/h3>\n\n\n\n

\u0110\u00f4i khi silicone v\u00f4 h\u1ea1i. Hi\u1ec7n t\u01b0\u1ee3ng lem m\u00e0u r\u1ea5t ph\u1ed5 bi\u1ebfn khi c\u00e1c th\u01b0\u01a1ng hi\u1ec7u c\u1ed1 g\u1eafng th\u00eam m\u1ed9t ch\u00fat s\u1eafc t\u1ed1 \u0111\u1ec3 t\u1ea1o \u0111\u1ed9 \u1ea5m cao c\u1ea5p.<\/p>\n\n\n\n

G\u00e2y ra<\/td>T\u1ea3i tr\u1ecdng \u0111i\u1ec3n h\u00ecnh<\/td>Ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c<\/td>Quy t\u1eafc c\u1ee7a ch\u00fang t\u00f4i<\/td><\/tr>
S\u1eafc t\u1ed1 h\u1eefu c\u01a1<\/td>0,1\u20130,5%<\/td>S\u1ef1 n\u1edf hoa v\u00e0 oxy h\u00f3a<\/td>T\u1eeb ch\u1ed1i >0,05%<\/td><\/tr>
M\u1ed9t s\u1ed1 oxit s\u1eaft<\/td>0.2%<\/td>qu\u1ea7ng s\u00e1ng m\u00e0u n\u00e2u v\u00e0ng<\/td>Ki\u1ec3m tra chuy\u1ec3n \u0111\u1ed5i ho\u00e0n to\u00e0n sang ISO 105<\/td><\/tr>
M\u00e0u s\u1eafc \u1ea5m \u00e1p do nh\u00e0 thi\u1ebft k\u1ebf t\u1ea1o ra\u201c<\/td>D\u1ea5u v\u1ebft<\/td>Ch\u1ec9 s\u1ed1 YI t\u0103ng v\u1ecdt t\u1eeb 1,2 l\u00ean 9,8 trong 6 th\u00e1ng.<\/td>Kh\u00f4ng khoan nh\u01b0\u1ee3ng \u0111\u1ed1i v\u1edbi c\u00e1c v\u1ea5n \u0111\u1ec1 quang h\u1ecdc<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

H\u1ea5p th\u1ee5 qua m\u00f4i tr\u01b0\u1eddng v\u00e0 ti\u1ebfp x\u00fac v\u1edbi da<\/h3>\n\n\n\n

Kh\u1ea3 n\u0103ng th\u1ea5m kh\u00ed c\u1ee7a silicone n\u1ed5i ti\u1ebfng \u0111\u1ebfn m\u1ee9c \u0111\u00e1ng kinh ng\u1ea1c (cao h\u01a1n t\u1edbi 100 l\u1ea7n so v\u1edbi h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i cao su). T\u1ea1i trung t\u00e2m th\u00e0nh ph\u1ed1 Los Angeles ho\u1eb7c c\u00e1c khu v\u1ef1c c\u1ea3ng Seattle, ozone, NOx v\u00e0 PAH khu\u1ebfch t\u00e1n tr\u1ef1c ti\u1ebfp v\u00e0o b\u00ean trong. V\u00ed d\u1ee5 th\u1ef1c t\u1ebf: mi\u1ebfng \u0111\u1ec7m tai nghe trong su\u1ed1t c\u1ee7a m\u1ed9t th\u01b0\u01a1ng hi\u1ec7u \u00e2m thanh n\u1ed5i ti\u1ebfng b\u1ecb \u1ed1 v\u00e0ng nhanh nh\u1ea5t \u1edf tai nghe b\u00ean ph\u1ea3i \u2014 ph\u00e2n t\u00edch GC-MS ch\u1ee9ng minh lipid b\u00e3 nh\u1eddn v\u00e0 mu\u1ed1i m\u1ed3 h\u00f4i t\u1ea1o ra m\u00f4i tr\u01b0\u1eddng vi m\u00f4 c\u00f3 t\u00ednh axit c\u1ee5c b\u1ed9.<\/p>\n\n\n\n

C\u1ea1m b\u1eaby c\u1ee7a ch\u1ea5t \u1ed5n \u0111\u1ecbnh tia UV: \u0110\u1ed9 trong su\u1ed1t so v\u1edbi \u0111\u1ed9 b\u1ec1n<\/h2>\n\n\n\n

M\u1ed7i k\u1ef9 s\u01b0 CMF \u0111\u1ec1u ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi c\u00f9ng m\u1ed9t v\u1ea5n \u0111\u1ec1 nan gi\u1ea3i khi s\u1eed d\u1ee5ng b\u1ea3ng t\u00ednh: \u201cT\u00f4i c\u00f3 th\u1ec3 th\u00eam bao nhi\u00eau ch\u1ea5t \u1ed5n \u0111\u1ecbnh tr\u01b0\u1edbc khi l\u00e0m h\u1ecfng c\u1ea3m gi\u00e1c v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a gi\u00e0y?\u201d<\/p>\n\n\n\n

N\u1ea1p ch\u1ea5t \u1ed5n \u0111\u1ecbnh<\/td>3000h QUV \u0394E<\/td>M\u1ea5t \u0111\u1ed9 b\u1ec1n x\u00e9 r\u00e1ch<\/td>C\u1ea3m gi\u00e1c b\u1ec1 m\u1eb7t<\/td>S\u1ef1 gi\u1edbi thi\u1ec7u<\/td><\/tr>
0,5\u20130,8%<\/td><2.0<\/td><5%<\/td>Xu\u1ea5t s\u1eafc<\/td>\u0110i\u1ec3m t\u1ed1i \u01b0u an to\u00e0n<\/td><\/tr>
1.0\u20131.2%<\/td><1,5<\/td>8\u201312%<\/td>T\u1ed1t<\/td>H\u1ea7u h\u1ebft c\u00e1c d\u1ef1 \u00e1n ngo\u00e0i tr\u1eddi<\/td><\/tr>
>1.5%<\/td><1.0<\/td>12\u201320%<\/td>X\u1ea5u x\u00ed, d\u1ec5 b\u00e1m b\u1ee5i<\/td>Ch\u1ec9 khi n\u00e0o s\u1ee9c m\u1ea1nh cho ph\u00e9p<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

M\u1ed9t kh\u00e1ch h\u00e0ng mu\u1ed1n \u201c\u0111\u1ed9 trong su\u1ed1t quang h\u1ecdc t\u1ed1t h\u01a1n th\u1ee7y tinh\u201d c\u1ed9ng v\u1edbi \u201ckh\u00f4ng b\u1ecb \u1ed1 v\u00e0ng trong 5 n\u0103m\u201d. Ch\u00fang t\u00f4i \u0111\u00e3 cung c\u1ea5p h\u1ed7n h\u1ee3p HALS t\u00f9y ch\u1ec9nh 0,7 % \u0111\u1ea1t ti\u00eau chu\u1ea9n QUV 4000 gi\u1edd v\u1edbi \u0394E < 1,5\u2014nh\u01b0ng \u0111\u1ed9 gi\u00e3n d\u00e0i gi\u1ea3m 9 %. Quy t\u1eafc chung: kh\u00f4ng bao gi\u1edd v\u01b0\u1ee3t qu\u00e1 t\u1ed5ng l\u01b0\u1ee3ng ch\u1ea5t \u1ed5n \u0111\u1ecbnh 1,2 % tr\u1eeb khi b\u1ea1n ki\u1ec3m \u0111\u1ecbnh l\u1ea1i to\u00e0n b\u1ed9 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u01a1 h\u1ecdc.<\/p>\n\n\n\n

Logic S\u1ea3n xu\u1ea5t: C\u00e1c Ki\u1ec3m so\u00e1t Quy tr\u00ecnh Th\u1ef1c s\u1ef1 Quan tr\u1ecdng<\/h2>\n\n\n\n

Nhi\u1ec7t \u0111\u1ed9 khu\u00f4n \u2013 K\u1ebb gi\u1ebft ng\u01b0\u1eddi th\u1ea7m l\u1eb7ng<\/h3>\n\n\n\n

Vi\u1ec7c v\u1eadn h\u00e0nh \u1edf nhi\u1ec7t \u0111\u1ed9 180\u2013190 \u00b0C \u0111\u1ec3 r\u00fat ng\u1eafn th\u1eddi gian chu k\u1ef3 s\u1ebd gi\u00fap t\u0103ng th\u00eam +0,8 \u0111\u01a1n v\u1ecb YI nh\u1edd qu\u00e1 tr\u00ecnh oxy h\u00f3a nhi\u1ec7t c\u1ee7a ch\u1ea5t x\u00fac t\u00e1c b\u1ea1ch kim.<\/p>\n\n\n\n

Ch\u1ea5t t\u00e1ch khu\u00f4n v\u00e0 k\u1ef7 lu\u1eadt ch\u1ebf t\u1ea1o khu\u00f4n<\/h3>\n\n\n\n

Hi\u1ec7n nay, ch\u00fang t\u00f4i y\u00eau c\u1ea7u s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng t\u00e1ch khu\u00f4n kh\u00f4ng ch\u1ee9a dung m\u00f4i, t\u01b0\u01a1ng th\u00edch v\u1edbi b\u1ea1ch kim v\u00e0 v\u1ec7 sinh khu\u00f4n ho\u00e0n to\u00e0n sau m\u1ed7i 500 l\u1ea7n \u00e9p.<\/p>\n\n\n\n

Ti\u00eau chu\u1ea9n sau x\u1eed l\u00fd<\/h3>\n\n\n\n

Quy tr\u00ecnh kh\u00f4ng th\u1ec3 th\u01b0\u01a1ng l\u01b0\u1ee3ng c\u1ee7a ch\u00fang t\u00f4i: 4 gi\u1edd \u1edf 200 \u00b0C + 2 gi\u1edd \u1edf 150 \u00b0C d\u01b0\u1edbi d\u00f2ng kh\u00ed nit\u01a1. C\u00e1c b\u1ed9 ph\u1eadn b\u1ecf qua b\u01b0\u1edbc n\u00e0y th\u01b0\u1eddng xuy\u00ean b\u1ecb h\u1ecfng trong th\u1eed nghi\u1ec7m QUV 1000 gi\u1edd.<\/p>\n\n\n\n

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

Quy tr\u00ecnh th\u1eed nghi\u1ec7m th\u1ef1c t\u1ebf (V\u01b0\u1ee3t ra ngo\u00e0i ti\u00eau chu\u1ea9n ASTM G154)<\/h2>\n\n\n\n

Ch\u00fang t\u00f4i ki\u1ec3m tra m\u1ecdi th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u1ec1 \u0111\u1ed9 trong su\u1ed1t ngo\u00e0i tr\u1eddi th\u00f4ng qua quy tr\u00ecnh ki\u1ec3m tra t\u1ed5ng h\u1ee3p n\u00e0y:<\/p>\n\n\n\n

Chu k\u1ef3 pha<\/td>Kho\u1ea3ng th\u1eddi gian<\/td>\u0110i\u1ec1u ki\u1ec7n<\/td>M\u1ee5c \u0111\u00edch<\/td><\/tr>
Ti\u1ebfp x\u00fac v\u1edbi tia UV<\/td>8 gi\u1edd<\/td>60 \u00b0C, 1,0 W\/m\u00b2 @ 340 nm (UVA-340)<\/td>M\u00f4 ph\u1ecfng \u00e1nh n\u1eafng ch\u00f3i chang nh\u1ea5t c\u1ee7a California<\/td><\/tr>
S\u1ef1 ng\u01b0ng t\u1ee5<\/td>4 gi\u1edd<\/td>50 \u00b0C, 100% RH<\/td>S\u1ef1 t\u1ea5n c\u00f4ng c\u1ee7a s\u01b0\u01a1ng v\u00e0 \u0111\u1ed9 \u1ea9m<\/td><\/tr>
Chu k\u1ef3 nhi\u1ec7t kh\u00f4 + \u0111\u1ed9 \u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i<\/td>12 gi\u1edd<\/td>Chu tr\u00ecnh 70 \u00b0C \/ 85% RH<\/td>S\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 ban ng\u00e0y \u1edf sa m\u1ea1c\/ven bi\u1ec3n<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

K\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o b\u1eb1ng m\u00e1y quang ph\u1ed5 Konica Minolta CM-700d \u1edf \u0111i\u1ec1u ki\u1ec7n D65\/10\u00b0 \u2014 \u0111\u01b0\u1eddng cong quang ph\u1ed5 \u0111\u1ea7y \u0111\u1ee7 v\u00e0 \u0394YI theo gi\u1edd.<\/p>\n\n\n\n

C\u00e1ch l\u1ef1a ch\u1ecdn lo\u1ea1i silicone ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n ti\u1ebfp theo c\u1ee7a b\u1ea1n<\/h2>\n\n\n\n

H\u00e3y s\u1eed d\u1ee5ng ch\u00ednh x\u00e1c danh s\u00e1ch ki\u1ec3m tra n\u00e0y khi n\u00f3i chuy\u1ec7n v\u1edbi nh\u00e0 cung c\u1ea5p:<\/p>\n\n\n\n

    \n
  1. Ch\u1ec9 y\u00eau c\u1ea7u LSR lo\u1ea1i quang h\u1ecdc \u2014 \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn \u0111\u1ea1t ti\u00eau chu\u1ea9n y t\u1ebf ho\u1eb7c ti\u1ebfp x\u00fac v\u1edbi th\u1ef1c ph\u1ea9m l\u00e0m th\u01b0\u1edbc \u0111o \u0111\u1ed9 tinh khi\u1ebft.<\/li>\n\n\n\n
  2. Y\u00eau c\u1ea7u cung c\u1ea5p g\u00f3i ch\u1ea5t \u1ed5n \u0111\u1ecbnh tia UV % b\u1eb1ng v\u0103n b\u1ea3n + b\u00e1o c\u00e1o \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 t\u00e1c \u0111\u1ed9ng c\u01a1 h\u1ecdc (\u0111\u1ed9 b\u1ec1n k\u00e9o, \u0111\u1ed9 b\u1ec1n x\u00e9, \u0111\u1ed9 gi\u00e3n d\u00e0i).<\/li>\n\n\n\n
  3. Ki\u1ec3m tra kh\u1ea3 n\u0103ng x\u1eed l\u00fd sau \u0111\u00f3ng r\u1eafn b\u1eb1ng nh\u1eadt k\u00fd l\u00f2 nung v\u00e0 D4\u2013D10 < 50 ppm.<\/li>\n\n\n\n
  4. H\u00e3y y\u00eau c\u1ea7u d\u1eef li\u1ec7u QUV 1000 gi\u1edd cho \u0111\u1ed9 c\u1ee9ng v\u00e0 m\u00e0u s\u1eafc ch\u00ednh x\u00e1c c\u1ee7a b\u1ea1n \u2014 ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c t\u00e0i li\u1ec7u qu\u1ea3ng c\u00e1o chung chung.<\/li>\n\n\n\n
  5. H\u00e3y x\u00e1c nh\u1eadn kinh nghi\u1ec7m c\u1ee7a nh\u00e0 cung c\u1ea5p v\u1edbi m\u00f4i tr\u01b0\u1eddng m\u1ee5c ti\u00eau c\u1ee7a b\u1ea1n (v\u00f9ng ven bi\u1ec3n c\u00f3 tia c\u1ef1c t\u00edm cao, sa m\u1ea1c, \u00f4 nhi\u1ec5m \u0111\u00f4 th\u1ecb).<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    In this no-fluff, production-floor guide, we reveal exactly why non-yellowing transparent silicone turns pale lemon in 6\u201312 months under real California sun and how CMF engineers, product designers, and brands can finally specify optical-grade LSR that actually survives high-UV, coastal, and urban environments for years. The Costly Myth That Still Dominates CMF Reviews For years, […]<\/p>\n","protected":false},"author":1,"featured_media":15820,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[794],"tags":[1029,1030],"class_list":["post-15816","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-silicone-technology","tag-transparent-silicone","tag-yellowing"],"_links":{"self":[{"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/posts\/15816","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=15816"}],"version-history":[{"count":0,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/posts\/15816\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/media\/15820"}],"wp:attachment":[{"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/media?parent=15816"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/categories?post=15816"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rysilicone.com\/vi\/wp-json\/wp\/v2\/tags?post=15816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}