Ha u sireletsa thepa le lihlahisoa ho tsoa liphellong tse kotsi tsa khanya ea letsatsi, ho na le li-additives tse peli tse atisang ho sebelisoa: li-absorber tsa UV leli-stabilizers tse khanyang.Le hoja li utloahala li tšoana, lintho tsena tse peli li hlile li fapane haholo ka tsela eo li sebetsang ka eona le boemo ba tšireletso eo li fanang ka eona.

Joalokaha lebitso lena le bolela, lintho tse monyang mahlaseli a kotsi a UV li monya mahlaseli a letsatsi.Mahlaseli a UV a tsejoa hore a baka ho senyeha ha lintho tse ngata, haholo-holo tse pepesehelang letsatsi ka nako e telele.Lisebelisoa tsa UV li sebetsa ka ho monya mahlaseli a UV le ho a fetola mocheso, oo ka mor'a moo o qhaloang ntle le kotsi.

Ka lehlakoreng le leng, li-photostabilizer li sebetsa ka ho thibela ho senyeha ha thepa ho bakoang ke mahlaseli a kotsi le khanya e bonahalang.Li-absorber tsa UV li shebana feela le tšireletso mahlaseling a UV, ha li-photostabilizer li fana ka tšireletso e pharaletseng.Ha se feela hore li monya mahlaseli a UV, hape li tšoasa li-radicals tsa mahala tse hlahisoang ke ho pepesehela leseli le bonahalang.

Karolo eali-stabilizers tse khanyangke ho fokotsa li-radicals tsa mahala le ho li thibela ho baka tšenyo ea thepa.Sena se etsa hore li atlehe ka ho khetheha ho fokotsa ts'ebetso ea ho senyeha ha thepa e atisang ho pepeseha libakeng tse ka ntle.Ka ho thibela ho thehoa ha li-radicals tsa mahala, li-stabilizers tsa leseli li thusa ho lelefatsa bophelo ba thepa le ho boloka botšepehi ba eona ba sebopeho.

Ho phaella moo, li-stabilizers tse khanyang hangata li kopantsoe leLisebelisoa tsa UVho fana ka tšireletso e feletseng liphellong tse senyang tsa letsatsi.Le hoja li-absorber tsa UV li sebetsana le liphello tsa mahlaseli a UV, li-photostabilizers li eketsa tšireletso ka ho senya li-radicals tsa mahala tse hlahisoang ke leseli le bonahalang.Ka ho sebelisa li-additives ka bobeli hammoho, thepa e sirelelitsoe ho tloha ho mefuta e mengata ea maqhubu a kotsi.

Phapang e 'ngoe pakeng tsa li-absorber tsa UV leli-stabilizers tse khanyangke ts'ebeliso ea bona le ho lumellana le lisebelisoa tse fapaneng.Li-absorber tsa UV li atisa ho sebelisoa ka liaparo tse hlakileng, lifilimi le li-polymers hobane li etselitsoe hore li be pepeneneng 'me li se ke tsa ama ponahalo ea thepa.Ka lehlakoreng le leng, li-stabilizers tsa mabone li sebetsa ka tsela e fapaneng 'me li ka sebelisoa mefuteng e mengata e fapaneng ea ts'ebeliso, ho kenyelletsa le polasetiki, rabara, lipente le masela.

Qetellong, le hoja li-absorber tsa UV le li-photostabilizers li sebelisetsoa ho sireletsa thepa ho tloha ho senyeha ho bakoang ke khanya ea letsatsi, li fapane ka mokhoa oa tsona oa ts'ebetso le boemo ba tšireletso.Li-absorber tsa UV li monya mahlaseli a UV, ha li-photostabilizer li thibela ho senyeha ho bakoang ke mahlaseli a UV le khanya e bonahalang ka ho fokotsa li-radicals tsa mahala.Ka ho utloisisa phapang pakeng tsa li-additives tsena, bahlahisi ba ka khetha khetho e nepahetseng ka ho fetisisa bakeng sa kopo ea bona e khethehileng le ho netefatsa tšireletso e molemo ka ho fetisisa bakeng sa thepa ea bona.