Ib Lub Lim UV Broad-Spectrum Uas Zoo Heev

Nyob rau kaum xyoo dhau los no qhov xav tau kev tiv thaiv UVA zoo duatau nce sai.

Kev tawg ntawm UV muaj cov teebmeem tsis zoo, suav nrog kev kub hnyiab, duab-kev laus thiab mob qog nqaij hlav ntawm daim tawv nqaij. Cov teebmeem no tsuas yog tuaj yeem tiv thaiv tau los ntawm kev tiv thaiv tag nrho cov hluav taws xob UV, suav nrog UVA.

Ntawm qhov tod tes kuj tseem muaj kev hloov pauv los txwv cov "tshuaj lom neeg" ntawm daim tawv nqaij. Qhov no txhais tau tias kev nqus UV zoo heevcov neeg ua haujlwmyuav tsum muaj rau qhov kev xav tau tshiab ntawm kev tiv thaiv UV dav dav.Sunsafe-BMTZ(Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine tau tsim los ua kom tau raws li qhov yuav tsum tau ua no. Nws ruaj khov rau duab, yaj hauv roj, ua haujlwm tau zoo heev thiab npog UVB thiab UVA ntau yam. Xyoo 2000, cov tub ceev xwm European tau ntxiv Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine rau daim ntawv teev npe zoo ntawm cov khoom siv UV absorbers zoo nkauj.

•UVA:Yuav tsum muaj ob pawg ortho-OH rau kev siv hluav taws xob kom zoo los ntawm cov choj hydrogen intramolecular. Yuav kom tau txais kev nqus tau zoo hauv UVA, cov para-positions ntawm ob lub phenyl moieties yuav tsum tau hloov los ntawm O-alkyl, ua rau muaj bis-resorcinyl triazine chromophor.

•UVB:Cov pawg phenyl uas tseem tshuav txuas rau triazine ua rau UVB nqus tau. Nws tuaj yeem pom tias qhov kev ua tau zoo tshaj plaws "tag nrho spectrum" yog ua tiav nrog O-alkyl nyob hauv para-position. Yog tsis muaj cov khoom hloov pauv solubilizing, HPTs yuav luag tsis yaj hauv cov roj pleev kom zoo nkauj. Lawv qhia txog cov khoom zoo li qub ntawm cov xim (piv txwv li, cov ntsiab lus melting siab). Yuav kom nce solubility hauv cov roj theem, cov qauv ntawm UV lim tau hloov kho raws li.

Cov txiaj ntsig:

Kev tiv thaiv hnub ci dav dav

Zoo sib xws nrog lwm cov lim dej UV

Kev ruaj khov ntawm cov mis