Lokacin da aka fallasa sutura a waje, abubuwa kamar danshi, zafi da hasken UV na iya haifar da lalacewa.Gabaɗaya magana, abubuwan da suka fi dacewa a cikin sutura sune resins na fim da foda.Hasken ultraviolet da ruwa suna haifar da waɗannan abubuwa su fuskanci lalacewar sinadarai, kuma waɗannan halayen lalata suna haɓaka lokacin da yanayin zafi ya tashi.Lalacewar suturar da ke haifar da hasken ultraviolet galibi ana kiranta da photooxidation.Ana haifar da martani ta hanyar hasken ultraviolet.Oxygen a cikin yanayi yana shiga cikin lalatawar sinadarai.Irin waɗannan abubuwa masu ɗaukar hoton ana kiran su chromophores kuma suna iya zama ƙarshen ƙungiyoyin barbashi masu launi, kashin baya ko polymer binders, ƙazanta, sauran kaushi, ko ƙari.Da zarar an sha photon, chromophore yana fitar da kuzari.Yawancin lokaci ana samun wannan tsari ta hanyar karya haɗin gwiwa don samar da radicals kyauta guda biyu.Wadannan radicals yawanci suna mayar da martani ga iskar oxygen kuma suna haɗuwa da oxygen don samar da radicals na kyauta na oxygen.Da zarar an kafa su, waɗannan masu tsattsauran ra'ayi za su iya karya haɗin gwiwar wasu sinadarai ta hanyar matakan sinadarai daban-daban, suna haifar da sarkar da ke haifar da lalata polymer.Dangane da polymer, ana iya lura da karuwa ko raguwa a yawan haɗin haɗin giciye, ko mafi girma ko ƙananan adadin kwayoyin halitta.Na farko na iya haifar da fashewar shafi;Ƙarshen na iya haifar da shafi viscidity, juriya mai ƙarfi ko juriya.Kuma fenti mai sheki zai ɓace, kuma launi zai canza.
Bugu da ƙari, photooxidation, fim ɗin da ke samar da guduro a cikin rufi zai iya lalata ta hanyar hydrolysis, musamman ma lokacin da zafin jiki ya karu a ƙarƙashin hasken rana.A ƙarƙashin waɗannan sharuɗɗa, ƙwayoyin ruwa da ke cikin rufi na iya kai hari ga haɗin gwiwar haɗin gwiwa a cikin guduro kuma su yanke sarƙoƙi na polymer, yana haifar da ƙananan nauyin kwayoyin halitta.Polyester da alkyd resins sun fi dacewa da wannan tasiri fiye da polyurethanes da epoxies.
| KYAUTA | LAMBAR CAS | DACEWA | BAYANI |
| UV1 | 57834-33-0 | UV1 ne mai matukar tasiri anti-uv ƙari, yadu amfani a polyurethane, m, kumfa da sauran kayan. | |
| UV3303 | 586400-06-8 | Ana ba da shawarar UV3 a cikin PU (TPU, RIM) da robobin injiniya (PET, PC, PC, ABS, PA, PBT) | |
| UV3331 | 147783-69-5 | SANDUVOR PR 31 | UV 3331 shine mai hana haske amine stabilizer (HALS) tare da aikin mai ɗaukar UV.Yana da Halin ingancinsa mai kyau da kuma ikon da za a iya gyara shi a cikin ɗaure ko matrix polymer yayin bayyanar UV. UV3331 za a iya amfani da a polyolefine, polystyrene filastik, PVC, PBT da sauran kayan. |
| UV3325 | 7443-25-6
| SANDUVOR PR 25 | UV 3325 shine mai ɗaukar UV-B don PVC, polyesters, PC, polyamides, robobi na styrene, EVA copolymers, da cellulosics.
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| LS123 | 129757-67-1 | TINUVIN 123 | Ana amfani da LS123 a cikin kayan kwalliyar motoci, masana'antar masana'antu, kayan ado na ado, kayan kwalliyar itace, musamman don manyan daskararru, injin sarrafa acid da fenti na masana'antu. |
| LS292 | 41556-26-7 82919-37-7 | TINUVIN 292 | LS292 iya yadda ya kamata hana fatattaka, asarar haske da sauran lacquer cuta, iya muhimmanci inganta sabis rayuwa na shafi, da kuma samfurin a dakin da zazzabi ba zai crystallize. |
| LS765 | 41556-26-7 82919-37-7 | TINUVIN 765 | Ana amfani da LS765 a cikin sutura, musamman fenti na mota don hana tsufa. LS765 ne mai matukar tasiri ruwa stabilizer don nau'ikan polymers da aikace-aikace iri-iri, gami da polyurethanes, sealants, adhesives, elastomers, polyester unsaturated, acrylics, vinyl polymers (PVB, PVC), styrene homopolymers da copolymers, polyene a tsaye, ruwan launi mai da hankali da sauran kwayoyin substrates. |