Mgbe mkpuchi na-ekpuchi n'èzí, ihe ndị dị ka mmiri, okpomọkụ na UV radieshon nwere ike ime ka ha daa.N'ikwu okwu n'ozuzu, ihe ndị kachasị mfe na mkpuchi bụ ihe nkiri na-emepụta resins na powders.Ultraviolet radieshon na mmiri na-eme ka ihe ndị a na-emebi kemịkalụ, na mmeghachi omume mmebi ndị a na-emekarị ngwa ngwa mgbe okpomọkụ na-ebili.A na-akpọkarị mmebi nke mkpuchi nke ultraviolet radieshon dị ka photooxidation.A na-ebute mmeghachi omume ahụ site na radieshon ultraviolet.Oxygen dị na ikuku na-etinye aka na mmebi kemịkalụ.A na-akpọ ihe ndị dị otú ahụ na-amịpụta foton chromophores ma nwee ike ịbụ njedebe njedebe nke paịlị pigmenti, ọkpụkpụ azụ ma ọ bụ polymer binders, adịghị ọcha, ihe mgbaze, ma ọ bụ ihe mgbakwunye.Ozugbo etinyere foton, chromophore na-ewepụta ike.A na-enwetakarị usoro a site n'imebi njikọ nke covalent iji mepụta radical abụọ n'efu.Ndị radicals ndị a na-emeghachi omume nke ukwuu na ikuku oxygen ma jikọta ya na oxygen iji mepụta radicals free oxygen na-adabere na ya.Ozugbo emebere ya, ndị a na-ahụ maka radicals nwere ike imebi njikọ nke kemịkalụ organic ndị ọzọ site na usoro kemịkalụ dị iche iche, na-eke mmeghachi omume yinye nke na-eduga n'emebi polymer.Dabere na polymer, enwere ike ịhụ mmụba ma ọ bụ ibelata na njupụta na-ejikọta ọnụ, ma ọ bụ ọnụ ọgụgụ dị ukwuu ma ọ bụ dị nta nke ụmụ irighiri ihe.Nke mbụ nwere ike ime ka mkpuchi mkpuchi;Nke ikpeazụ nwere ike iduga mkpuchi viscidity, ihe mgbaze ma ọ bụ nguzogide ọkọ.Na agba agba ga-efunahụ, agba ga-agbanwekwa.
Na mgbakwunye na photooxidation, ihe nkiri na-emepụta resin na mkpuchi nwere ike imebi site na hydrolysis, karịsịa mgbe okpomọkụ nke mkpuchi na-abawanye n'okpuru ìhè anyanwụ.N'okpuru ọnọdụ ndị a, ụmụ irighiri mmiri dị na mkpuchi nwere ike ịwakpo agbụ covalent na resin wee kewaa ụdọ polymer, na-ebute ịdị arọ molekụla dị ala.Polyester na alkyd resins na-enwe ike ịnweta mmetụta a karịa polyurethane na epoxies.
| Ngwaahịa | Nọmba CAS | NKWUKWU | Nkọwa |
| UV1 | 57834-33-0 | UV1 bụ ihe mgbakwunye mgbochi UV na-arụ ọrụ nke ukwuu, nke a na-ejikarị na polyurethane, nrapado, ụfụfụ na ihe ndị ọzọ. | |
| UV3303 | 586400-06-8 | A na-atụ aro UV3 na PU (TPU, RIM) na plastik injinia (PET, PC, PC, ABS, PA, PBT) | |
| UV3331 | 147783-69-5 | SANDUVOR PR 31 | UV 3331 bụ ihe mgbochi amine ìhè stabilizer (HALS) nwere ọrụ nnabata UV.Ọ bụ Eji ya nke ọma na arụmọrụ ya dị oke mma yana ike itinye ya n'ime ihe nkedo ma ọ bụ polymer matrix n'oge mkpughe UV. Enwere ike iji UV3331 na polyolefine, polystyrene plastic, PVC, PBT na ihe ndị ọzọ. |
| UV3325 | 7443-25-6
| SANDUVOR PR 25 | UV 3325 bụ ihe ntinye UV-B maka PVC, polyesters, PC, polyamides, styrene plastics, EVA copolymers, na cellulosics.
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| LS123 | 129757-67-1 | TINUVIN 123 | A na-eji LS123 mee ihe na mkpuchi ụgbọ ala, mkpuchi ụlọ ọrụ, mkpuchi ịchọ mma, mkpuchi osisi, karịsịa maka akwa siri ike, acid na-agwọ ụgbọ ala na agba ụlọ ọrụ. |
| LS292 | 41556-26-7 82919-37-7 | TINUVIN 292 | LS292 nwere ike n'ụzọ dị irè gbochie cracking, ọnwụ nke ìhè na ndị ọzọ lacquer ọrịa, nwere ike budata mma ọrụ ndụ nke mkpuchi, na ngwaahịa na ụlọ okpomọkụ agaghị crystallize. |
| LS765 | 41556-26-7 82919-37-7 | TINUVIN 765 | A na-eji LS765 eme ihe na mkpuchi, ọkachasị eserese ụgbọ ala iji gbochie ịka nká. LS765 bụ ihe na-eme ka mmiri sie ike nke ukwuu maka ọtụtụ polymers na ngwa dị iche iche, gụnyere polyurethanes, sealants, adhesives, elastomers, polyester unsaturated, acrylics, vinyl polymers (PVB, PVC), styrene homopolymers na copolymers, polyene vetikal, agba mmiri na-etinye uche na ya. ihe ndị ọzọ organic substrates. |