Xa iingubo zibonakaliswe ngaphandle, izinto ezifana nokufuma, ubushushu kunye nemitha ye-UV zinokubangela ukuba zithobe.Ngokuqhelekileyo, awona malungu achaphazeleka kakhulu kwiingubo ziifilimu zokwenza iiresin kunye nomgubo.Imitha yemitha ye-Ultraviolet kunye namanzi ibangela ukuba ezi mathiriyeli zibenokonakala kweekhemikhali, kwaye ezi ntshukumo zokonakala zidla ngokukhula ngokukhawuleza xa amaqondo obushushu enyuka.Ukuthotywa kweengubo ezibangelwa yimisebe ye-ultraviolet idla ngokubizwa ngokuba yi-photooxidation.Ukusabela kubangelwa yimisebe ye-ultraviolet.Ioksijini esemoyeni ibandakanyeka ekuthotyweni kweekhemikhali.Izinto ezinjalo zokufunxa i-photon zibizwa ngokuba yi-chromophores kwaye ingaba ngamaqela okugqibela amasuntswana e-pigment, i-backbone okanye i-polymer binders, ukungcola, i-solvents eseleyo, okanye izongezo.Nje ukuba iifotoni zifunxwe, ichromophore ikhupha amandla.Le nkqubo idla ngokufezekiswa ngokuphula ibhondi edibeneyo ukwenza iiradicals ezimbini zasimahla.Ezi radicals zidla ngokusebenza kakhulu kwioksijini kwaye zidibanisa neoksijini ukwenza iiradicals zasimahla ezigxile kwi-oxygen.Nje ukuba zenziwe, ezi radicals zinokuqhawula amaqhina ezinye iikhemikhali eziphilayo ngokusebenzisa amanyathelo ahlukeneyo ekhemikhali, ukudala ukusabela kwekhonkco okukhokelela ekuthotyweni kwepolymer.Ngokuxhomekeke kwipolymer, ukunyuka okanye ukuncipha kwi-cross-linking density, okanye inani elikhulu okanye elincinci leemolekyuli, lingabonwa.Eyangaphambili inokubangela ukuqhekeka kwengubo;Oku kokugqibela kunokukhokelela kwi-viscidity yokugquma, ukuxhathisa kwe-solvent okanye ukuxhathisa ukukrazula.Kwaye i-gloss yepeyinti iya kulahleka, kwaye umbala uya kutshintsha.
Ukongeza kwi-photooxidation, ifilimu eyenza i-resin kwi-coating ingathotywa yi-hydrolysis, ngakumbi xa iqondo lokushisa linyuka phantsi kokukhanya kwelanga.Ngaphantsi kwezi meko, iimolekyuli zamanzi ezifunxayo kwi-covalent zinokuhlasela iibhondi ezidibeneyo kwi-resin kwaye ziqhawule amatyathanga e-polymer, okukhokelela kubunzima obuphantsi bemolekyuli.I-polyester kunye ne-alkyd resins zichaphazeleka ngakumbi kule mpembelelo kune-polyurethanes kunye ne-epoxies.
| IMVELISO | INOMBOLO YECAS | ELINGANAYO | INKCAZO |
| UV1 | 57834-33-0 | I-UV1 sisongezo esichasene ne-uv esisebenza kakhulu, esisetyenziswa ngokubanzi kwi-polyurethane, i-adhesive, igwebu kunye nezinye izinto. | |
| UV3303 | 586400-06-8 | I-UV3 iyacetyiswa kwi-PU (TPU, RIM) kunye neeplastiki zobunjineli (PET, PC, PC, ABS, PA, PBT) | |
| UV3331 | 147783-69-5 | ISANDUVOR PR 31 | I-UV 3331 sisizinzi sokukhanya se-amine esithintelweyo (HALS) kunye nokusebenza kwe-UV yokufunxa.Yi ephawulwa ngobuchule bayo obugqwesileyo kunye nokukwazi kwayo ukuzinziswa kwi-binder okanye kwi-polymer matrix ngexesha lokuvezwa kwe-UV. UV3331 ingasetyenziswa polyolefine, polystyrene iplastiki, PVC, PBT kunye nezinye izinto. |
| UV3325 | 7443-25-6
| ISANDUVOR PR 25 | I-UV 3325 sisisitha se-UV-B se-PVC, iipolyester, i-PC, ii-polyamides, iiplastiki ze-styrene, ii-copolymers ze-EVA, kunye nee-cellulosics.
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| I-LS123 | 129757-67-1 | I-TINUVIN 123 | I-LS123 isetyenziselwa ukugquma iimoto, iingubo zemizi-mveliso, iingubo zokuhombisa, iingubo zokhuni, ngokukodwa kwizinto eziqinileyo eziphezulu, i-asidi yokunyanga iimoto kunye neepeyinti zemizi-mveliso. |
| LS292 | 41556-26-7 82919-37-7 | I-TINUVIN 292 | I-LS292 inokuthintela ngokufanelekileyo ukuqhekeka, ukulahleka kokukhanya kunye nezinye izifo ze-lacquer, kunokuphucula kakhulu ubomi benkonzo yokugquma, kwaye imveliso kwiqondo lokushisa legumbi ayiyi kukhanya. |
| LS765 | 41556-26-7 82919-37-7 | I-TINUVIN 765 | I-LS765 isetyenziselwa iingubo, ngakumbi iipeyinti zeemoto ukukhusela ukuguga. I-LS765 sisizinzisi solwelo esisebenza kakhulu kwiipolymers ezahlukeneyo kunye nokusetyenziswa, kubandakanya i-polyurethanes, i-sealants, i-adhesives, i-elastomers, i-polyester ezingaxutywanga, i-acrylics, i-vinyl polymers (i-PVB, i-PVC), i-styrene homopolymers kunye ne-copolymers, i-polyene nkqo, i-concentrate yombala wolwelo. ezinye substrates eziphilayo. |