Li-absorber tsa UV, tse tsejoang hape e le li-filter tsa UV kapa li-sunscreen, ke metsoako e sebelisetsoang ho sireletsa thepa e fapaneng liphellong tse kotsi tsa mahlaseli a ultraviolet (UV). E 'ngoe ea li-absorber tsa UV ke UV234, e leng khetho e tsebahalang bakeng sa ho fana ka tšireletso khahlanong le mahlaseli a UV. Sehloohong sena re tla hlahloba mefuta e fapaneng ea li-absorber tsa UV le ho hlahloba litšobotsi le ts'ebeliso e itseng ea UV234.

Mefuta e fapaneng ea li-UV absorbers e akaretsa mefuta e mengata ea metsoako e etselitsoeng ho monya le ho qhala mahlaseli a UV. Metsoako ena e sebelisoa hangata lihlahisoa tse kang setlolo sa letsatsi, polasetiki, lipente le masela ho thibela ho senyeha le tšenyo e bakoang ke ho pepesehela mahlaseli a UV. Li-UV absorbers li sebetsa ka ho monya mahlaseli a UV le ho a fetola mocheso o se nang kotsi, ka hona li sireletsa thepa liphellong tse kotsi tsa mahlaseli a UV.

Li-UV absorbers li arotsoe ka mekhahlelo e fapaneng ho latela sebopeho sa tsona sa lik'hemik'hale le mokhoa oa ts'ebetso. Mefuta e meng e tloaelehileng ea li-UV absorbers e kenyelletsa benzophenones, benzotriazoles, le triazines. Mofuta o mong le o mong oa UV absorber o na le melemo e itseng 'me o loketse lits'ebetso tse fapaneng. Mohlala, UV234 ke benzotriazole UV absorber e sebelisoang haholo liindastering tse fapaneng ka lebaka la thepa ea eona e ntle ea tšireletso ea UV.

UV234 e tsebahala ka bokgoni ba yona bo phahameng ba ho monya mahlaseli a ultraviolet, haholoholo mefuteng ya UVB le UVA. Sena se etsa hore e be ntle bakeng sa ho fana ka tshireletso ya mahlaseli a UV a pharaletseng. UV234 e atisa ho sebediswa mefuteng ya ditlolo tsa letsatsi ho ntlafatsa bokgoni ba tshireletso ya UV ya sehlahiswa. Ho feta moo, e sebediswa dipolasetiking le dikobong ho thibela ho bola ha photogradation le ho boloka botsitso ba thepa ha e pepeseditswe ke letsatsi.

Tšebeliso eaUV234ha li felle feela ho setlolo sa letsatsi le lipente tse sireletsang. E boetse e sebelisoa indastering ea masela ho kenya khanyetso ea UV masela le likhoele. Ka ho kenyelletsa UV234 masela, bahlahisi ba ka eketsa ho tšoarella le ho phela nako e telele ha thepa, e leng se etsang hore e lokele ho sebelisoa kantle moo ho pepesehela mahlaseli a UV ho ke keng ha qojoa.

Ntle le thepa ea eona ea ho monya UV, UV234 e boetse e tsejoa ka ho tsitsa ha eona ha e bonesoa, e leng se netefatsang hore e lula e sebetsa esita le ka mor'a ho pepesehela khanya ea letsatsi nako e telele. Thepa ena e bohlokoa ho boloka ts'ebetso ea lihlahisoa tse nang le UV234, kaha e netefatsa tšireletso ea nako e telele khahlanong le mahlaseli a UV.

Ha ho nahanoa ka mefuta e fapaneng ea li-UV absorbers, ho bohlokoa ho utloisisa litlhoko tse ikhethileng tsa ts'ebeliso le boemo ba tšireletso ea UV bo hlokahalang. Li-UV absorbers tse fapaneng li fana ka maemo a fapaneng a tšireletso ea UV le ho lumellana le lisebelisoa tse fapaneng. Ka hona, ho bohlokoa ho khetha tse loketsengSesebelisoa sa ho monya mahlaseli a kotsi a UVho latela tšebeliso e reriloeng le litšobotsi tse itseng tsa thepa e sirelelitsoeng.

Ka bokhutšoanyane, li-UV absorber li bapala karolo ea bohlokoa ho sireletseng thepa khahlanong le mahlaseli a kotsi a UV. UV234 ke benzotriazole UV absorber e sebelisoang haholo ka lebaka la litšobotsi tsa eona tse ntle tsa tšireletso ea UV le ho tsitsa ha eona. Ho utloisisa mefuta e fapaneng ea li-UV absorber le litšobotsi tsa tsona tse ikhethileng ho bohlokoa ho khetheng monyatsi oa UV o loketseng ka ho fetisisa bakeng sa ts'ebeliso e itseng. Ebang ke liforomong tsa letsatsi, polasetiki, liphahlo kapa masela, li-UV absorber tse kang UV234 li fana ka tšireletso e tšepahalang khahlanong le mahlaseli a UV, li thusa ho eketsa nako e telele le ts'ebetso ea lisebelisoa tse fapaneng.