i-stabilizer ekhanyayo
Iziqinisi zokukhanya zisetshenziselwa ukuvikela amapulasitiki nezinye izinto ekonakalisweni{0}}ekuchayekeni isikhathi eside emisebeni ye-ultraviolet. Ukuchayeka kwamapulasitiki emisebeni ye-ultraviolet evela elangeni kuqala ukuwohloka ngenqubo ye-photooxidation. Lokhu kungaba nenani lemiphumela engathandeki ehlanganisa izinguquko ekubukekeni (ukushintsha umbala, ukushintsha kwesicwebezelisi kanye/noma ukuchaki), ukuncipha kwezakhiwo zemishini kanye nokwakheka kokukhubazeka okubonakalayo njengokuqhekeka. Amalambu e-Fluorescent asetshenziselwa ukukhanyisa kwangaphakathi aphinde akhiphe imisebe ye-UV, kodwa emazingeni aphansi kakhulu kunokukhanya kwelanga.
Njengasendabeni ye-oxidation eshisayo, i-photooxidation iyinqubo yokusabela ngamaketanga ehlanganisa ama-radicals mahhala kanye ne-hydroperoxide intermediates. Ama-photostabilizers avimbela le nqubo ngokukhipha izinto ezimaphakathi ezisebenzayo noma ngokumunca ngokuncintisana emisebeni ye-UV eyingozi.
Izizinzisi zokukhanya kwe-amine ezivinjiwe (HALS) ikakhulukazi zisebenza ngokukhipha ama-radical intermediate mahhala enqubweni ye-photooxidation. I-HALS iphumelela kakhulu ekuqiniseni ukukhanya kwe-polyolefin, ama-styrenic polymers namanye amapulasitiki obunjiniyela.
Izimunyisi ze-Ultraviolet (UV) zisebenza ngokuvikela ingaphakathi lezingxenye zepulasitiki emisebeni ye-UV elimazayo. Le mikhiqizo ibonakala ngokumuncwa okunamandla kwe-UV kanye nezinga eliphezulu lokukwazi ukuthwebula izithombe. Ama-absorber ama-UV asebenza kahle ekusimamiseni amapulasitiki amaningi, okuhlanganisa i-PVC namapulasitiki obunjiniyela. Zibuye zisetshenziswe ezinhlelweni zokupakisha zepulasitiki ukuvikela okuqukethwe kwephakheji emisebeni ye-UV.
Inhlanganisela ye-HALS kanye ne-UV absorbers ngokuvamile ibonisa ukusebenza okuvumelanayo ngaphezu kokuqiniswa kokukhanya kuphela.
