xov xwm

Ultraviolet absorber (UV absorber) yog lub teeb stabilizer uas tuaj yeem nqus cov ultraviolet ib feem ntawm lub hnub ci thiab lub teeb fluorescent yam tsis hloov nws tus kheej.Ultraviolet absorber feem ntau yog dawb crystalline hmoov, zoo thermal stability, zoo tshuaj stability, tsis muaj xim, tsis muaj tshuaj lom, tsis muaj ntxhiab, feem ntau siv rau hauv polymers (yas, thiab lwm yam), coatings thiab lwm yam.

Feem ntau cov xim pleev xim, tshwj xeeb tshaj yog cov xim xim tsis muaj xim, tuaj yeem ua si qee yam ntawm lub teeb stabilization thaum siv ib leeg hauv cov khoom yas.Rau cov khoom siv xim yas rau kev siv sab nraum zoov ntev, lub teeb ruaj khov ntawm cov khoom tsis tuaj yeem txhim kho los ntawm cov xim ib leeg.Tsuas yog kev siv lub teeb stabilizer tuaj yeem cuam tshuam los yog ua rau lub teeb aging ntawm cov khoom siv xim xim rau lub sijhawm ntev.Tseem ceeb txhim kho lub teeb ruaj khov ntawm cov khoom yas xim xim.Hindered amine teeb stabilizer (HALS) yog ib chav kawm ntawm cov organic amine compounds nrog steric hindrance nyhuv.Vim nws lub luag haujlwm ntawm decomposing hydroperoxide, quenching radical oxygen, ntxiab dawb radicals, thiab recycling ntawm pab pawg neeg zoo, HALS yog cov yas lub teeb stabilizer nrog siab anti-photoaging efficiency thiab ntau tshaj plaws nyob rau hauv tsev thiab txawv teb chaws.Cov ntaub ntawv qhia tau hais tias qhov tsim nyog lub teeb stabilizer los yog kev sib xyaw ua ke tsim nyog ntawm antioxidant thiab lub teeb stabilizer tuaj yeem txhim kho lub teeb thiab oxygen stability ntawm sab nraum zoov xim yas khoom ob peb zaug.Rau cov khoom yas xim los ntawm photoactive thiab photosensitive colorants (xws li cadmium daj, uncored rutile, thiab lwm yam), xav txog cov catalytic photoaging nyhuv ntawm colorant, tus nqi ntawm lub teeb stabilizer yuav tsum tau nce raws li.

Uv absorbers feem ntau tuaj yeem raug cais raws li cov qauv tshuaj, ua haujlwm feem thiab siv, uas tau piav qhia hauv qab no:

1.Classification raws li cov qauv tshuaj: ultraviolet absorbers tuaj yeem muab faib ua cov organic ultraviolet absorbers thiab inorganic ultraviolet absorbers.Organic ultraviolet absorbers feem ntau suav nrog benzoates, benzotriazole, cyanoacrylate, thiab lwm yam, thaum inorganic ultraviolet absorbers feem ntau suav nrog zinc oxide, hlau oxide, titanium dioxide thiab lwm yam.

2.Classification raws li hom kev ua: ultraviolet absorber tuaj yeem muab faib ua hom shielding thiab nqus hom.Tiv thaiv UV absorbers tuaj yeem cuam tshuam UV lub teeb thiab yog li tiv thaiv nws los ntawm kev nkag mus rau hauv lub cev, thaum absorbing UV absorbers muaj peev xwm nqus UV teeb thiab hloov mus rau hauv tshav kub lossis pom lub teeb.

3.Classification raws li kev siv: ultraviolet absorbent tuaj yeem muab faib ua qib tshuaj pleev ib ce, qib zaub mov, qib tshuaj, thiab lwm yam. Tshuaj pleev ib ce qib UV absorbers feem ntau yog siv tshuaj pleev thaiv hnub, cov khoom tu tawv nqaij thiab lwm yam tshuaj pleev ib ce, zaub mov qib UV absorbers yog siv rau hauv cov khoom noj. cov ntaub ntawv ntim khoom, thiab cov tshuaj qib UV absorbers yog siv rau hauv cov tshuaj.

Unilong Kev Lag Luam yog tus kws tshaj lijUV manufacturers, peb tuaj yeem muab cov hauv qab noUV seriesntawm cov khoom, yog tias koj xav tau, thov koj xav tiv tauj peb