Ukuhlukaniswa nokusetshenziswa kwemikhiqizo yokwelapha ye-UV

Ubuchwepheshe bokuphulukisa i-UV wuhlobo lobuchwepheshe obusezingeni eliphezulu, ukuvikelwa kwemvelo, ukonga amandla kanye nobuchwepheshe obuphezulu bezinto ezibonakalayo.Kwaziwa njengobuchwepheshe obusha bemboni eluhlaza ngekhulu lama-21.Ngokuthuthuka kwesayensi nobuchwepheshe, ukusetshenziswa kobuchwepheshe bokuphulukisa be-UV sekuthuthukile kusukela kumabhodi aphrintiwe okuqala kanye nama-photoresist kuya kuma-UV elaphayo, oyinki nezinamatheliso.Umkhakha wokufaka izicelo ubulokhu ukhula, wakha imboni entsha.

Imikhiqizo yokwelapha ye-UV ivame ukuhlukaniswa ngezingubo ze-UV, oyinki be-UV kanye nezinamatheliso ze-UV.Isici sazo esikhulu ukuthi zinezinga lokuphulukisa ngokushesha, ngokuvamile phakathi kwemizuzwana embalwa namashumi amasekhondi, futhi elishesha kakhulu lingelapheka phakathi kwamasekhondi angu-0.05~0.1.Awomiswe ngokushesha futhi alapha phakathi kwezingubo ezihlukahlukene, oyinki nezinamatheliso okwamanje.

Ukwelashwa kwe-UV kusho ukwelapha kwe-UV.I-UV isifinyezo sesiNgisi se-UV.Ukuphulukisa kubhekisela enqubweni yokuthi izinto zishintsha kusuka kuma-molecule aphansi kuya kuma-polymers.Ukwelashwa kwe-UV ngokuvamile kubhekisela ezimweni zokuphulukisa noma izidingo zokunamathela (opende), oyinki, izinto zokunamathisela (iglue) noma ezinye izinto zokuvala izimbiza ezidinga ukuphulukiswa kwe-UV, ezihlukile ekwelapheni ukushisa, ukwelapha ngezinto ezinamathelayo (ezelaphayo), ukuphulukiswa kwemvelo, njll. [1].

Izingxenye eziyisisekelo zemikhiqizo yokwelapha ye-UV zifaka ama-oligomers, ama-diluent asebenzayo, ama-photoinitiators, izithasiselo nokunye.I-Oligomer iyindikimba eyinhloko yemikhiqizo yokwelapha ye-UV, futhi ukusebenza kwayo ngokuyisisekelo kunquma ukusebenza okuyinhloko kwezinto eselashiwe.Ngakho-ke, ukukhethwa nokuklama kwe-oligomer ngokungangabazeki isixhumanisi esibalulekile ekwakhiweni kwemikhiqizo yokwelapha ye-UV.

Okufanayo lawa ma-oligomers ukuthi wonke ane-Unsaturated double bond resins ibalwa ngokwezinga lokusabela kwe-free radical polymerization: acryloyloxy > methacrylyloxy > vinyl > allyl.Ngakho-ke, ama-oligomers asetshenziswa ekwelapheni kwe-Unsaturated radical UV ngokuyinhloko ama-acrylic ahlukahlukene, njenge-epoxy acrylate, i-polyurethane acrylate, i-polyester acrylate, i-polyether acrylate, i-acrylate resin noma i-vinyl resin, futhi esetshenziswa kakhulu i-epoxy acrylate resin, i-polyurethane acrylate resin ne-polyester acrylic resin.Lawa ma-resin amathathu ethulwa kafushane ngezansi.

I-epoxy acrylate

I-Epoxy acrylic acid value isetshenziswa kabanzi futhi iyinani elikhulu kunawo wonke le-oligomer yokwelapha ye-UV njengamanje.Ilungiswa kusuka ku-epoxy resin kanye ne-(meth) acrylate.Ama-epoxy acrylates angahlukaniswa abe yi-bisphenol A epoxy acrylates, ama-phenolic epoxy acrylates, ama-epoxy acrylates ashintshiwe kanye nama-epoxidized acrylates ngokwezinhlobo zawo zesakhiwo, kanye ne-bisphenol A epoxy acrylates asetshenziswa kakhulu.

I-Bisphenol I-epoxy acrylate ingenye yama-oligomers anesilinganiso sokuphulukisa sokukhanya esisheshayo.Ifilimu ephulukisiwe inobunzima obukhulu, i-gloss ephezulu, ukumelana kwamakhemikhali okuhle kakhulu, ukumelana nokushisa okuhle kanye nezakhiwo zikagesi.Ngaphezu kwalokho, i-bisphenol A oxygen exchange acrylate inefomula yempahla eluhlaza kanye nenani eliphansi.Ngakho-ke, ngokuvamile isetshenziswa njenge-resin eyinhloko yephepha lokuphulukisa ukukhanya, izinkuni, ipulasitiki nensimbi, futhi njenge-resin eyinhloko yokuphulukisa uyinki kanye ne-adhesive elula yokuphulukisa.
I-polyurethane acrylate

I-polyurethane acrylate (PUA) ingenye i-oligomer ebalulekile ye-UV eyelaphekayo.Ihlanganiswe ngezinyathelo ezimbili zokusabela kwe-polyisocyanate, i-long-chain diol ne-hydroxyl acrylate.Ngenxa yezakhiwo eziningi ze-polyisocyanates nama-diol amaketanga amade, ama-oligomers anezakhiwo ezimisiwe ahlanganiswa ngokuklanywa kwamangqamuzana.Ngakho-ke, zingama-oligomers anemikhiqizo eminingi yomkhiqizo njengamanje, futhi asetshenziswa kabanzi embotsheni ye-UV yokwelapha, oyinki nezinamatheliso.

I-polyester Acrylate

I-polyester acrylate (PEA) iphinde ibe i-oligomer evamile, elungiswa kusukela ku-low molecular weight polyester glycol nge-acrylate.I-polyester acrylate ibonakala ngentengo ephansi kanye ne-viscosity ephansi.Ngenxa ye-viscosity yayo ephansi, i-polyester acrylate ingasetshenziswa kokubili njenge-oligomer kanye ne-diluent esebenzayo.Ngaphezu kwalokho, ama-acrylates amaningi e-polyester anephunga eliphansi, ukucasuka okuphansi, ukuguquguquka okuhle nokumanzisa kwe-pigment, futhi afanele amapende ombala noyinki.Ukuze kuthuthukiswe izinga eliphezulu lokuphulukisa, i-multifunctional polyester acrylate ingalungiswa;I-Amine modified polyester acrylate ayikwazi nje ukunciphisa umthelela we-oxygen polymerization inhibition, ithuthukise izinga lokuphulukisa, kodwa futhi ithuthukise ukunamathela, isicwebezelisi nokugqoka ukumelana.

Ama-diluent asebenzayo ngokuvamile aqukethe amaqembu asebenzayo, angancibilikisa futhi anciphise ama-oligomers, futhi adlale indima ebalulekile enqubweni yokwelapha ye-UV kanye nezakhiwo zefilimu.Ngokusho kwenani lamaqembu asebenzayo, ama-diluent asebenzayo avamile ahlanganisa i-isodecyl acrylate, i-lauryl acrylate, i-hydroxyethyl methacrylate, i-glycidyl methacrylate, njll;Ama-diluent asebenzayo asebenza kabili ahlanganisa uchungechunge lwe-polyethylene glycol diacrylate, i-dipropylene glycol diacrylate, i-neopenyl glycol diacrylate, njll;Ama-diluent asebenzayo anemisebenzi eminingi njenge-trimethylolpropane triacrylate, njll. [2].

I-Initiator inethonya elibalulekile ezingeni lokuphulukisa lemikhiqizo yokwelapha ye-UV.Emikhiqizweni yokwelapha ye-UV, inani le-photoinitiator ngokuvamile lingu-3% ~ 5%.Ngaphezu kwalokho, izithako zombala nezithako zokugcwalisa nazo zinomthelela obalulekile ekusebenzeni kokugcina kwemikhiqizo ephulukisiwe ye-UV.