![\"\"](\"https:\/\/www.alpapowder.com\/wp-content\/uploads\/2021\/08\/Airquality.jpg\")
<\/p>\nB\u1ed9t l\u1ea5p \u0111\u1ea7y cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta, v\u00e0 n\u00f3 t\u1ed3n t\u1ea1i trong t\u1ea5t c\u1ea3 c\u00e1c kh\u00eda c\u1ea1nh c\u1ee7a cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta. Tr\u00ean th\u1ef1c t\u1ebf, ch\u00fang v\u1eabn lu\u00f4n b\u1ea3o v\u1ec7 cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta, gi\u00fap cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta an to\u00e0n v\u00e0 t\u01b0\u01a1i \u0111\u1eb9p h\u01a1n.<\/p>\n
Trong s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a ng\u00e0nh s\u01a1n ph\u1ee7, formaldehyde lu\u00f4n \u0111\u00f3ng m\u1ed9t vai tr\u00f2 quan tr\u1ecdng: l\u00e0 dung m\u00f4i h\u1eefu c\u01a1 cho s\u01a1n ph\u1ee7 gi\u00fap cho qu\u00e1 tr\u00ecnh h\u00f2a tr\u1ed9n v\u00e0 ph\u00e2n t\u00e1n s\u01a1n ph\u1ee7; t\u0103ng c\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng x\u01b0\u1edbc v\u00e0 ch\u1ed1ng ma s\u00e1t c\u1ee7a l\u1edbp ph\u1ee7; \u0111\u1ea3m b\u1ea3o t\u00ednh \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc c\u1ee7a l\u1edbp ph\u1ee7 \u0111\u1ec3 b\u1ea3o qu\u1ea3n l\u00e2u d\u00e0i …<\/p>\n
Tuy nhi\u00ean, formaldehyde t\u1ef1 do trong s\u01a1n s\u1ebd t\u1ea1o th\u00e0nh m\u00e0ng khi s\u01a1n kh\u00f4, v\u00e0 s\u1ebd \u0111\u01b0\u1ee3c th\u1ea3i ra m\u00f4i tr\u01b0\u1eddng d\u01b0\u1edbi d\u1ea1ng VOC, g\u00e2y ra m\u1ed1i \u0111e d\u1ecda l\u1edbn v\u1ec1 s\u1ee9c kh\u1ecfe \u0111\u1ed1i v\u1edbi con ng\u01b0\u1eddi v\u00e0 c\u00e1c sinh v\u1eadt kh\u00e1c trong h\u1ec7 th\u1ed1ng m\u00f4i tr\u01b0\u1eddng. Ti\u1ebfp x\u00fac l\u00e2u d\u00e0i v\u1edbi formaldehyde li\u1ec1u th\u1ea5p c\u00f3 th\u1ec3 g\u00e2y ra c\u00e1c b\u1ec7nh m\u00e3n t\u00ednh v\u1ec1 \u0111\u01b0\u1eddng h\u00f4 h\u1ea5p v\u00e0 c\u00e1c b\u1ec7nh nghi\u00eam tr\u1ecdng nh\u01b0 ung th\u01b0 khoang m\u0169i, khoang mi\u1ec7ng, c\u1ed5 h\u1ecdng, da v\u00e0 \u0111\u01b0\u1eddng ti\u00eau h\u00f3a. N\u1ed3ng \u0111\u1ed9 cao h\u01a1n c\u00f3 th\u1ec3 g\u00e2y bu\u1ed3n n\u00f4n v\u00e0 n\u00f4n, ho, t\u1ee9c ng\u1ef1c, th\u1edf kh\u00f2 kh\u00e8, ph\u00f9 ph\u1ed5i, th\u1eadm ch\u00ed t\u1eed vong ngay l\u1eadp t\u1ee9c.<\/p>\n
Hi\u1ec7n nay c\u00f3 hai ph\u01b0\u01a1ng ph\u00e1p h\u1ea5p ph\u1ee5 formaldehyde th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0 h\u1ea5p ph\u1ee5 v\u1eadt l\u00fd v\u00e0 h\u1ea5p ph\u1ee5 h\u00f3a h\u1ecdc. H\u1ea5p ph\u1ee5 v\u1eadt l\u00fd c\u1ea7n ch\u1ecdn v\u1eadt li\u1ec7u c\u00f3 t\u00ednh h\u1ea5p ph\u1ee5 v\u1eadt l\u00fd, v\u00e0 s\u1eed d\u1ee5ng c\u1ea5u tr\u00fac b\u1ec1 m\u1eb7t c\u1ee7a n\u00f3 \u0111\u1ec3 h\u1ea5p th\u1ee5 formaldehyde t\u1ef1 do tho\u00e1t ra ngo\u00e0i m\u00f4i tr\u01b0\u1eddng. Hi\u1ec7n nay, v\u1eadt li\u1ec7u h\u1ea5p ph\u1ee5 ph\u1ed5 bi\u1ebfn tr\u00ean th\u1ebf gi\u1edbi ch\u1ee7 y\u1ebfu bao g\u1ed3m c\u00e1c lo\u1ea1i sau: \u0111\u1ea5t t\u1ea3o c\u00e1t, than ho\u1ea1t t\u00ednh v\u00e0 \u0111\u00e1 y t\u1ebf. L\u00e0 m\u1ed9t v\u1eadt li\u1ec7u t\u1ef1 nhi\u00ean, \u0111\u1ea5t t\u1ea3o c\u00e1t c\u00f3 c\u1ea5u tr\u00fac vi x\u1ed1p n\u00ean c\u00f3 t\u00e1c d\u1ee5ng h\u1ea5p th\u1ee5 t\u1ed1t c\u00e1c kh\u00ed \u0111\u1ed9c h\u1ea1i nh\u01b0 formaldehyde v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u00e1c d\u1ee5ng thanh l\u1ecdc kh\u00f4ng kh\u00ed.<\/p>\n
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Ch\u00fang ta th\u01b0\u1eddng xuy\u00ean ti\u1ebfp x\u00fac v\u1edbi ch\u00fang trong cu\u1ed9c s\u1ed1ng, t\u1eeb nh\u1eefng v\u1eadt d\u1ee5ng thi\u1ebft y\u1ebfu h\u00e0ng ng\u00e0y cho \u0111\u1ebfn nh\u1eefng c\u00f4ng tr\u00ecnh l\u1edbn, \u0111\u1ec1u c\u00f3 nguy c\u01a1 ch\u00e1y n\u1ed5 nh\u1ea5t \u0111\u1ecbnh. Y\u1ebfu t\u1ed1 con ng\u01b0\u1eddi d\u1eabn \u0111\u1ebfn vi\u1ec7c b\u00e1o ch\u00e1y \u0111i\u1ec7n thi\u1ebfu v\u00e0 tr\u1ec5, thi\u1ebft b\u1ecb b\u00e1o \u0111\u1ed9ng h\u1ecfng h\u00f3c kh\u00f4ng kh\u1eafc ph\u1ee5c k\u1ecbp th\u1eddi. Nhi\u1ec1u y\u1ebfu t\u1ed1 khi\u1ebfn tai n\u1ea1n ch\u00e1y n\u1ed5 th\u01b0\u1eddng xuy\u00ean x\u1ea3y ra. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i l\u00e0m t\u1ed1t c\u00f4ng t\u00e1c ph\u00f2ng ng\u1eeba. C\u00e1c bi\u1ec7n ph\u00e1p \u1ee9ng ph\u00f3 khi h\u1ecfa ho\u1ea1n x\u1ea3y ra c\u0169ng r\u1ea5t quan tr\u1ecdng. B\u00ecnh ch\u1eefa ch\u00e1y l\u00e0 m\u1ed9t trong nh\u1eefng d\u1ee5ng c\u1ee5 ch\u1eefa ch\u00e1y th\u00f4ng d\u1ee5ng. B\u00ecnh ch\u1eefa ch\u00e1y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t trong gia \u0111\u00ecnh v\u00e0 n\u01a1i c\u00f4ng c\u1ed9ng l\u00e0 b\u00ecnh ch\u1eefa ch\u00e1y b\u1ed9t kh\u00f4 x\u00e1ch tay. L\u00ednh c\u1ee9u h\u1ecfa c\u0169ng c\u1ea7n m\u1eb7c nh\u1eefng b\u1ed9 qu\u1ea7n \u00e1o ch\u1ed1ng ch\u00e1y \u0111\u1ec3 t\u1ef1 b\u1ea3o v\u1ec7 m\u00ecnh khi ch\u1eefa ch\u00e1y.<\/p>\n
B\u00ecnh ch\u1eefa ch\u00e1y b\u1ed9t kh\u00f4 \u0111\u01b0\u1ee3c trang b\u1ecb ch\u1ea5t ch\u1eefa ch\u00e1y b\u1ed9t kh\u00f4. Ch\u1ea5t ch\u1eefa ch\u00e1y d\u1ea1ng b\u1ed9t kh\u00f4 n\u00e0y r\u1ea5t d\u1ec5 ch\u1ea3y v\u00e0 kh\u00f4. N\u00f3 bao g\u1ed3m mu\u1ed1i v\u00f4 c\u01a1 v\u00e0 c\u00e1c ch\u1ea5t ph\u1ee5 gia \u0111\u01b0\u1ee3c nghi\u1ec1n nh\u1ecf v\u00e0 s\u1ea5y kh\u00f4, c\u00f3 th\u1ec3 ch\u1eefa ch\u00e1y ban \u0111\u1ea7u r\u1ea5t hi\u1ec7u qu\u1ea3. Ch\u1ea5t ch\u1eefa ch\u00e1y b\u1ed9t kh\u00f4 th\u01b0\u1eddng \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: ch\u1ea5t ch\u1eefa ch\u00e1y b\u1ed9t kh\u00f4 BC (natri bicacbonat, v.v.) v\u00e0 b\u1ed9t kh\u00f4 ABC (amoni photphat, v.v.). N\u00f3 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ch\u1eefa ch\u00e1y ban \u0111\u1ea7u c\u1ee7a ch\u1ea5t l\u1ecfng d\u1ec5 ch\u00e1y nh\u01b0 d\u1ea7u m\u1ecf v\u00e0 dung m\u00f4i h\u1eefu c\u01a1, kh\u00ed d\u1ec5 ch\u00e1y v\u00e0 thi\u1ebft b\u1ecb \u0111i\u1ec7n.<\/p>\n
Qu\u1ea7n \u00e1o ch\u1ed1ng ch\u00e1y l\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i ph\u01b0\u01a1ng ti\u1ec7n b\u1ea3o v\u1ec7 c\u00e1 nh\u00e2n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i. Nguy\u00ean t\u1eafc c\u1ee7a qu\u1ea7n \u00e1o b\u1ea3o h\u1ed9 ch\u1ed1ng ch\u00e1y ch\u1ee7 y\u1ebfu l\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c d\u1ee5ng che ch\u1eafn nh\u01b0 c\u00e1ch nhi\u1ec7t, ph\u1ea3n x\u1ea1, h\u1ea5p th\u1ee5 v\u00e0 c\u00e1ch ly cacbon. Qu\u1ea7n \u00e1o ch\u1ed1ng ch\u00e1y b\u1ea3o v\u1ec7 ng\u01b0\u1eddi lao \u0111\u1ed9ng kh\u1ecfi ng\u1ecdn l\u1eeda ho\u1eb7c ngu\u1ed3n nhi\u1ec7t. . N\u00f3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c m\u1ecf d\u1ea7u, c\u00f4ng nghi\u1ec7p h\u00f3a d\u1ea7u, tr\u1ea1m kh\u00ed \u0111\u1ed1t, c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t, ph\u00f2ng ch\u00e1y ch\u1eefa ch\u00e1y v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p kh\u00e1c, n\u01a1i c\u00f3 c\u00e1c y\u00eau c\u1ea7u b\u1ea3o v\u1ec7 kh\u00e1c nhau \u0111\u1ed1i v\u1edbi qu\u1ea7n \u00e1o. C\u00f3 hai c\u00f4ng ngh\u1ec7 ch\u00ednh cho qu\u1ea7n \u00e1o ch\u1ed1ng ch\u00e1y. M\u1ed9t l\u00e0 \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh kh\u1eed n\u01b0\u1edbc v\u00e0 cacbon h\u00f3a s\u1ee3i \u0111\u1ec3 gi\u1ea3m c\u00e1c ch\u1ea5t d\u1ec5 ch\u00e1y nh\u1eb1m \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u1eed l\u00fd amoniac c\u1ee7a v\u1ea3i Indura v\u00e0 x\u1eed l\u00fd v\u1ea3i b\u00f4ng b\u1eb1ng Proban; hai l\u00e0 thay \u0111\u1ed5i c\u1ea5u tr\u00fac b\u00ean trong c\u1ee7a s\u1ee3i th\u00f4ng qua m\u1ed9t qu\u00e1 tr\u00ecnh h\u00f3a h\u1ecdc. , Gi\u1ea3m c\u00e1c th\u00e0nh ph\u1ea7n d\u1ec5 ch\u00e1y, \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c \u0111\u00edch ch\u1ed1ng ch\u00e1y, ch\u1eb3ng h\u1ea1n nh\u01b0 Nomex, PBI v\u00e0 PR-97TM v\u00e0 c\u00e1c lo\u1ea1i s\u1ee3i t\u1ef1 ch\u1ed1ng ch\u00e1y kh\u00e1c.<\/p>\n
![\"\"](\"https:\/\/www.alpapowder.com\/wp-content\/uploads\/2021\/08\/Fireextinguisher.jpg\")
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M\u00e1 phanh \u00f4 t\u00f4 hay c\u00f2n g\u1ecdi l\u00e0 m\u00e1 phanh \u00f4 t\u00f4 d\u00f9ng \u0111\u1ec3 ch\u1ec9 v\u1eadt li\u1ec7u ma s\u00e1t \u0111\u01b0\u1ee3c g\u1eafn c\u1ed1 \u0111\u1ecbnh tr\u00ean tr\u1ed1ng phanh ho\u1eb7c \u0111\u0129a phanh quay v\u1edbi b\u00e1nh xe. T\u1ea5m l\u00f3t ma s\u00e1t v\u00e0 t\u1ea5m l\u00f3t ma s\u00e1t ch\u1ecbu \u00e1p l\u1ef1c b\u00ean ngo\u00e0i v\u00e0 sinh ra ma s\u00e1t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 gi\u1ea3m t\u1ed1c c\u1ee7a xe. M\u1ee5c \u0111\u00edch.<\/p>\n
Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ma s\u00e1t quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t phanh c\u1ee7a m\u00e1 phanh. L\u1edbp ma s\u00e1t trong m\u00e1 phanh \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o b\u1edfi v\u1eadt li\u1ec7u gia c\u01b0\u1eddng, ch\u1ea5t k\u1ebft d\u00ednh v\u00e0 ch\u1ea5t \u0111\u1ed9n. V\u1eadt li\u1ec7u ma s\u00e1t \u0111\u01b0\u1ee3c chia th\u00e0nh ba lo\u1ea1i: ami\u0103ng, b\u00e1n kim lo\u1ea1i v\u00e0 h\u1eefu c\u01a1 (NAO). C\u00e1c lo\u1ea1i b\u1ed9t ch\u00ednh \u0111\u01b0\u1ee3c th\u00eam v\u00e0o trong ba nguy\u00ean li\u1ec7u n\u00e0y l\u00e0:<\/p>\n
Ami\u0103ng chi\u1ebfm 40-60% trong th\u00e0nh ph\u1ea7n c\u1ee7a m\u00e1 phanh ami\u0103ng. Ami\u0103ng \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb c\u00e1c b\u00f3 s\u1ee3i v\u00e0 c\u00f3 \u0111\u1eb7c t\u00ednh ch\u1ed1ng ch\u00e1y, c\u00e1ch \u0111i\u1ec7n, c\u00e1ch nhi\u1ec7t cao, l\u00e0 v\u1eadt li\u1ec7u ch\u1ed1ng ch\u00e1y, c\u00e1ch nhi\u1ec7t v\u00e0 gi\u1eef nhi\u1ec7t quan tr\u1ecdng.<\/p>\n
Cao su \u0111\u01b0\u1ee3c th\u00eam v\u00e0o nh\u01b0 m\u1ed9t ch\u1ea5t gia c\u01b0\u1eddng \u0111\u1ec3 l\u00e0m cho v\u1eadt li\u1ec7u ma s\u00e1t ch\u1ecbu m\u00e0i m\u00f2n t\u1ed1t h\u01a1n. Do t\u00ednh \u0111\u00e0n h\u1ed3i tuy\u1ec7t v\u1eddi c\u1ee7a n\u00f3, n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u00eam v\u00e0o m\u00e1 phanh \u0111\u1ec3 gi\u1ea3m ti\u1ebfng \u1ed3n.<\/p>\n
B\u1ed9t than ch\u00ec l\u00e0 ch\u1ea5t b\u00f4i tr\u01a1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u ma s\u00e1t. Trong qu\u00e1 tr\u00ecnh ma s\u00e1t c\u1ee7a m\u00e1 phanh, c\u00e1c m\u1ea3nh v\u1ee5n sinh ra do m\u00e0i m\u00f2n s\u1ebd t\u00edch t\u1ee5 tr\u00ean b\u1ec1 m\u1eb7t v\u1eadt li\u1ec7u ma s\u00e1t t\u1ea1o th\u00e0nh l\u1edbp ma s\u00e1t pha cacbon, l\u00e0 l\u1edbp k\u1ebft d\u00ednh gi\u1eefa m\u00e1 phanh v\u00e0 b\u00e1nh xe. . Do \u0111\u00f3, trong m\u1ed9t kho\u1ea3ng nhi\u1ec7t \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh, b\u1ed9t than ch\u00ec c\u00f3 th\u1ec3 l\u00e0m t\u0103ng h\u1ec7 s\u1ed1 ma s\u00e1t trong qu\u00e1 tr\u00ecnh phanh.<\/p>\n
M\u00e1 phanh g\u1ed1m m\u1edbi c\u1ee7a Shi \u0111\u00e3 ph\u00e1 b\u1ecf kh\u00e1i ni\u1ec7m truy\u1ec1n th\u1ed1ng v\u1ec1 phanh g\u1ed1m. N\u00f3 \u0111\u01b0\u1ee3c c\u1ea5u t\u1ea1o t\u1eeb s\u1ee3i g\u1ed1m (th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a alumin), v\u1eadt li\u1ec7u \u0111\u1ed9n kim lo\u1ea1i m\u00e0u, ch\u1ea5t k\u1ebft d\u00ednh v\u00e0 m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf kim lo\u1ea1i. Th\u00eam alumin c\u00f3 th\u1ec3 l\u00e0m t\u0103ng h\u1ec7 s\u1ed1 ma s\u00e1t v\u00e0 gi\u1ea3m t\u1ed1c \u0111\u1ed9 m\u00e0i m\u00f2n; th\u00eam cacbua silic c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 h\u1ec7 s\u1ed1 ma s\u00e1t, trong khi t\u1ef7 l\u1ec7 m\u00e0i m\u00f2n ch\u1ec9 l\u00e0 m\u1ed9t s\u1ef1 gia t\u0103ng nh\u1ecf; m\u1ed9t l\u01b0\u1ee3ng nh\u1ea5t \u0111\u1ecbnh silicat zirconi c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn \u0111\u1ebfn k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a h\u1ec7 s\u1ed1 ma s\u00e1t m\u00e1 phanh \u00f4 t\u00f4. T\u00e1c \u0111\u1ed9ng l\u1edbn.<\/p>\n
C\u1ea3 bari sunfat v\u00e0 canxi cacbonat \u0111\u1ec1u l\u00e0 ch\u1ea5t \u0111\u1ed9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t ph\u1ed5 bi\u1ebfn, c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u ma s\u00e1t v\u00e0 \u0111\u1ed3ng th\u1eddi c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t ph\u00e2n r\u00e3 nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u, nh\u01b0ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n, v\u1eadt li\u1ec7u tr\u01b0\u1edbc \u0111\u00e2y kh\u00f4ng \u1ed5n \u0111\u1ecbnh b\u1eb1ng v\u1eadt li\u1ec7u sau. Mica v\u00e0 vermiculite l\u00e0 hai ch\u1ea5t \u0111\u1ed9n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng kh\u00e1c. Ch\u00fang c\u00f3 c\u1ea5u tr\u00fac l\u01b0\u1edbi ph\u1eb3ng v\u00e0 c\u00f3 th\u1ec3 tri\u1ec7t ti\u00eau ti\u1ebfng \u1ed3n phanh t\u1ea7n s\u1ed1 th\u1ea5p. Tuy nhi\u00ean, vermiculite b\u1ecb bong tr\u00f3c nhanh ch\u00f3ng \u1edf kho\u1ea3ng 800 \u00b0 C v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng m\u00e0i m\u00f2n c\u1ee7a mica k\u00e9m \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<\/p>\n
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B\u1ee9c x\u1ea1 tia c\u1ef1c t\u00edm v\u1eeba ph\u1ea3i c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 kh\u1eed tr\u00f9ng v\u00e0 th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh t\u1ed5ng h\u1ee3p vitamin D, nh\u01b0ng ti\u1ebfp x\u00fac l\u00e2u d\u00e0i v\u1edbi tia c\u1ef1c t\u00edm, c\u00e1c tia UVA v\u00e0 UVB trong tia t\u1eed ngo\u1ea1i s\u1ebd g\u00e2y t\u1ed5n th\u01b0\u01a1ng nghi\u00eam tr\u1ecdng cho da, khi\u1ebfn da b\u1ecb s\u1ea1m \u0111en, l\u00e3o h\u00f3a, ch\u00e1y n\u1eafng. , m\u1ea9n \u0111\u1ecf, v\u00e0 th\u1eadm ch\u00ed s\u01b0ng t\u1ea5y. C\u00f3 th\u1ec3 g\u00e2y ung th\u01b0 da. \u0110\u1ec3 ng\u0103n ch\u1eb7n tia c\u1ef1c t\u00edm g\u00e2y h\u1ea1i cho ch\u00fang ta, ch\u00fang ta c\u1ea7n c\u00f3 nh\u1eefng bi\u1ec7n ph\u00e1p ch\u1ed1ng n\u1eafng nh\u1ea5t \u0111\u1ecbnh. Ngo\u00e0i c\u00e1c bi\u1ec7n ph\u00e1p ch\u1ed1ng n\u1eafng c\u1ee9ng nh\u01b0 qu\u1ea7n \u00e1o ch\u1ed1ng n\u1eafng, \u00f4 che n\u1eafng, m\u0169 che n\u1eafng th\u00ec vi\u1ec7c ch\u1ed1ng n\u1eafng m\u1ec1m nh\u01b0 \u00e1o ch\u1ed1ng n\u1eafng c\u0169ng r\u1ea5t c\u1ea7n thi\u1ebft.<\/p>\n
Kem ch\u1ed1ng n\u1eafng \u0111\u01b0\u1ee3c chia th\u00e0nh kem ch\u1ed1ng n\u1eafng v\u1eadt l\u00fd v\u00e0 kem ch\u1ed1ng n\u1eafng h\u00f3a h\u1ecdc. Th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a kem ch\u1ed1ng n\u1eafng v\u1eadt l\u00fd l\u00e0 titanium dioxide v\u00e0 zinc oxide. Titanium dioxide ch\u1ee7 y\u1ebfu thu \u0111\u01b0\u1ee3c t\u1eeb s\u1ef1 ph\u00e2n h\u1ee7y rutil b\u1eb1ng axit ho\u1eb7c titan tetraclorua. H\u1ea7u h\u1ebft c\u00e1c s\u1ea3n ph\u1ea9m ch\u0103m s\u00f3c da v\u00e0 m\u1ef9 ph\u1ea9m \u0111\u1ec1u ch\u1ee9a titanium dioxide; Qu\u00e1 tr\u00ecnh oxy h\u00f3a; K\u1ebdm l\u00e0 m\u1ed9t oxit kh\u00f3 tan trong n\u01b0\u1edbc. N\u00f3 c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m se v\u00e0 kh\u1eed tr\u00f9ng nh\u1ea5t \u0111\u1ecbnh, c\u00f3 th\u1ec3 l\u00e0m cho h\u1ea7u h\u1ebft c\u00e1c b\u01b0\u1edbc s\u00f3ng c\u1ee7a tia UV t\u1ea5n c\u00f4ng kh\u00f4ng hi\u1ec7u qu\u1ea3, v\u00e0 kh\u00f4ng d\u1ec5 g\u00e2y m\u1eabn c\u1ea3m. Khi hai lo\u1ea1i b\u1ed9t n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m kem ch\u1ed1ng n\u1eafng v\u1eadt l\u00fd, ch\u00fang th\u01b0\u1eddng \u1edf m\u1ee9c nano. , S\u1ebd kh\u00f4ng x\u00e2m nh\u1eadp v\u00e0o l\u1edbp s\u1eebng c\u1ee7a da.<\/p>\n
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Thu\u1ed1c v\u00e0 ch\u1ea5t dinh d\u01b0\u1ee1ng b\u1ea3o v\u1ec7 c\u01a1 th\u1ec3 b\u1ea1n m\u1ecdi l\u00fac. B\u1ea1n c\u00f3 bi\u1ebft r\u1eb1ng nh\u1eefng lo\u1ea1i thu\u1ed1c th\u00f4ng th\u01b0\u1eddng n\u00e0y c\u0169ng \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng b\u1ed9t?<\/p>\n
B\u1ed9t Montmorillonite<\/a> cho ng\u01b0\u1eddi l\u1edbn v\u00e0 tr\u1ebb em b\u1ecb ti\u00eau ch\u1ea3y c\u1ea5p v\u00e0 m\u00e3n t\u00ednh. Th\u00e0nh ph\u1ea7n ch\u00ednh l\u00e0 montmorillonite<\/a>, l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t ph\u00e2n l\u1edbp bao g\u1ed3m aluminosilicat ng\u1eadm n\u01b0\u1edbc c\u1ef1c m\u1ecbn; d\u00f9ng \u0111\u1ec3 \u0111i\u1ec1u tr\u1ecb c\u00e1c ch\u1ee9ng ng\u1ee9a c\u1ea5p t\u00ednh nh\u01b0 m\u1ec1 \u0111ay m\u1ea9n ng\u1ee9a Kem d\u01b0\u1ee1ng da Calamine ch\u1eefa c\u00e1c b\u1ec7nh ngo\u00e0i da, th\u00e0nh ph\u1ea7n ch\u00ednh l\u00e0 calamine (m\u1ed9t lo\u1ea1i kho\u00e1ng v\u1eadt cacbonat thu\u1ed9c h\u1ecd canxit smithsonite, ch\u1ee7 y\u1ebfu ch\u1ee9a k\u1ebdm cacbonat), oxit k\u1ebdm; Ng\u01b0u ho\u00e0ng thanh nhi\u1ec7t gi\u1ea3i \u0111\u1ed9c, th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 ng\u01b0u ho\u00e0ng nh\u00e2n t\u1ea1o, \u0111\u1ecba ho\u00e0ng, th\u1ea1ch cao, \u0111\u1ea1i ho\u00e0ng, ho\u00e0ng b\u00e1, ti\u1ec3u ho\u00e0ng, borneol, cam th\u1ea3o, th\u1ee5c \u0111\u1ecba, l\u00e0 t\u00ean th\u01b0\u1eddng g\u1ecdi c\u1ee7a tetraarsenic tetrasulfide (As4<\/sub>S4<\/sub>), l\u00e0 m\u1ed9t lo\u1ea1i qu\u1eb7ng ch\u1ee9a l\u01b0u hu\u1ef3nh v\u00e0 Asen, th\u1ea1ch cao l\u00e0 m\u1ed9t kho\u00e1ng ch\u1ea5t \u0111\u01a1n t\u00e0, c\u00f3 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc ch\u00ednh N\u00f3 l\u00e0 m\u1ed9t d\u1ea1ng hy\u0111rat c\u1ee7a canxi sunfat (CaSO4<\/sub>).<\/p>\n <\/p>\n Sau 20 n\u0103m kh\u00f4ng ng\u1eebng nghi\u00ean c\u1ee9u v\u00e0 t\u00ecm t\u00f2i, ALPA \u0111\u00e3 c\u00f3 kinh nghi\u1ec7m k\u1ef9 thu\u1eadt ti\u00ean ti\u1ebfn h\u01a1n trong l\u0129nh v\u1ef1c nghi\u1ec1n v\u00e0 nghi\u1ec1n h\u00f3a ch\u1ea5t m\u1ecbn. Bao g\u1ed3m d\u01b0\u1ee3c ph\u1ea9m, s\u01a1n ph\u1ee7, s\u01a1n, c\u00f4ng nghi\u1ec7p nh\u1eb9, luy\u1ec7n kim b\u1ed9t, v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng, c\u00f4ng nghi\u1ec7p h\u00f3a ch\u1ea5t v\u00e0 c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c, s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 b\u1ed9t si\u00eau m\u1ecbn \u0111\u1ec3 d\u1ec5 d\u00e0ng x\u1eed l\u00fd c\u00e1c nguy\u00ean li\u1ec7u th\u00f4 kh\u00e1c nhau, k\u00edch th\u01b0\u1edbc c\u1ee7a c\u00e1c h\u1ea1t nguy\u00ean li\u1ec7u t\u1eeb 2mm \u0111\u1ebfn 2\u03bcm. T\u1eeb \u0111\u00f3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 t\u1ef7 l\u1ec7 s\u1eed d\u1ee5ng nguy\u00ean v\u1eadt li\u1ec7u v\u00e0 n\u00e2ng cao hi\u1ec7u qu\u1ea3 hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t. S\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 m\u00e1y nghi\u1ec1n ph\u1ea3n l\u1ef1c, s\u1ea3n xu\u1ea5t si\u00eau m\u1ecbn v\u00e0 si\u00eau tinh khi\u1ebft c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n, v\u00e0 n\u00f3 th\u00edch h\u1ee3p \u0111\u1ec3 ch\u1ebf bi\u1ebfn c\u00e1c kho\u00e1ng ch\u1ea5t c\u00f3 gi\u00e1 tr\u1ecb gia t\u0103ng cao nh\u01b0 b\u1ed9t talc v\u00e0 \u0111\u00e1 y t\u1ebf.<\/p>\n","protected":false},"excerpt":{"rendered":" B\u1ed9t l\u1ea5p \u0111\u1ea7y cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta, v\u00e0 n\u00f3 t\u1ed3n t\u1ea1i trong t\u1ea5t c\u1ea3 c\u00e1c kh\u00eda c\u1ea1nh c\u1ee7a cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta. Tr\u00ean th\u1ef1c t\u1ebf, ch\u00fang v\u1eabn lu\u00f4n b\u1ea3o v\u1ec7 cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta, gi\u00fap cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta an to\u00e0n v\u00e0 t\u01b0\u01a1i \u0111\u1eb9p h\u01a1n.<\/p>\n","protected":false},"author":6,"featured_media":109879,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-109905","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/109905","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/comments?post=109905"}],"version-history":[{"count":0,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/posts\/109905\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media\/109879"}],"wp:attachment":[{"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/media?parent=109905"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/categories?post=109905"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.alpapowder.com\/vi\/wp-json\/wp\/v2\/tags?post=109905"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"\"](\"https:\/\/www.alpapowder.com\/wp-content\/uploads\/2021\/08\/pill.jpg\")
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