Ipulasitiki nezinye izinto ze-polymer, ezichayeke elangeni noma{0}}emisebeni yamandla aphezulu, zizolahlekelwa isithombe{1}}se-oxidative ngenxa yokumuncwa amandla okukhanya kwe-ultraviolet, okuholela ekushintsheni kombala kanye nokuwohloka kokusebenza kwemikhiqizo. Noma iyiphi into engavimba noma yehlise i-photooxidation ibizwa ngokuthi i-light stabilizer noma i-anti{3}}anti ultraviolet.
Imisebenzi eyinhloko yezinzinzisi zokukhanya yilezi: ukuvikela ukukhanya, ukumunca nokudlulisa amandla okukhanya, ukucisha noma ukuthwebula ama-radicals mahhala. Iziqinisi zokukhanya zivame ukuhlukaniswa zibe izigaba ezine: ama-ejenti okuvikela ukukhanya, izinto zokumunca i-ultraviolet, izicishamlilo kanye neziqinisi zokukhanya kwe-amine ezivimbile ngokuya ngendlela yazo yokusebenza.
I-Hindered amine light stabilizer iwuhlobo lwe-stabilizer yokukhanya esetshenziswa ngobuningi ekhaya naphesheya. Ingakwazi ukubola ama-hydroperoxides, icime umoya-mpilo we-radical, ibambe ama-radicals mahhala, futhi amaqembu ayo asebenzayo anemisebenzi yokuvuselela kabusha.
Inani le-stabilizer yokukhanya emkhiqizweni ngokuvamile lingu-0.01%~0.5%, futhi umphumela muhle. I-stabilizer yokukhanya ngokuvamile inezimo ezilandelayo:
1. Ingakwazi ukumunca ukukhanya kwe-ultraviolet ebangeni lamaza angama-290~410 nanometers, noma ingacisha ngokuphumelelayo amandla ama-molecule ajabulile, noma ibe nekhono elanele lokubamba ama-radicals mahhala. Umphumela wayo wokuzinzisa ukukhanya yisikhathi eside-.
2. Ukuhambisana okuhle ne-resin, ukuzinza okuhle kokushisa, akukho ukusabela nezinye izithasiselo, ukumelana okuhle kokukhipha.
3. Imikhiqizo engenabo ubuthi-noma ephansi{2}}, engangcolisi{3}, intengo ephansi.
