Sefa Yogwira Bwino Kwambiri ya Broad-Spectrum UV

Pazaka khumi zapitazi pakufunika chitetezo cha UVA chowongolerachinali kuwonjezeka mofulumira.

Ma radiation a UV ali ndi zotsatira zoyipa, kuphatikiza kutentha kwa dzuwa, chithunzi-kukalamba ndi khansa yapakhungu. Zotsatirazi zitha kupewedwa podziteteza ku mitundu yonse ya ma radiation a UV, kuphatikiza UVA.

Kumbali ina palinso chizolowezi chochepetsera kuchuluka kwa "mankhwala" pakhungu. Izi zikutanthauza kuti UV abso yothandiza kwambirirbersziyenera kupezeka pakufunika kwatsopano kwa chitetezo cha UV.Sunsafe-BMTZ(Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine adapangidwa kuti akwaniritse izi. Ndiwokhazikika pazithunzi, osasungunuka m'mafuta, ndiwothandiza kwambiri ndipo imaphimba mitundu ya UVB ndi UVA. M'chaka cha 2000, akuluakulu a ku Ulaya anawonjezera Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine pamndandanda wabwino wa zodzikongoletsera za UV.

•UVA:Magulu awiri a ortho-OH amafunikira kuti azitha kutaya mphamvu pogwiritsa ntchito milatho ya intramolecular hydrogen. Kuti mutenge mayamwidwe amphamvu mu UVA, ma para-positions a magawo awiri a phenyl moieties ayenera kulowetsedwa ndi O-alkyl, zomwe zimapangitsa kuti bis-resorcinyl triazine chromophor.

•UVB:Gulu lotsala la phenyl lophatikizidwa ndi triazine limatsogolera ku UVB kuyamwa. Zitha kuwonetsedwa kuti magwiridwe antchito apamwamba kwambiri a "full spectrum" amakwaniritsidwa ndi O-alkyl yomwe ili mu para-position. Popanda zosungunulira m'malo, ma HPT amakhala pafupifupi osasungunuka m'mafuta odzola. Iwo amasonyeza mmene katundu wa inki (mwachitsanzo, mkulu kusungunuka mfundo). Kuti muwonjezere kusungunuka mu magawo amafuta, mawonekedwe a fyuluta ya UV asinthidwa moyenerera.

Ubwino:

Broad-spectrum chitetezo ku dzuwa

Zofananira kwambiri ndi zosefera zina za UV

Kukhazikika kwa fomula