Ukuhlukaniswa nokusetshenziswa kwemikhiqizo yokwelapha ye-UV

Ubuchwepheshe bokuphulukisa ukukhanya busebenza kahle kakhulu, ukuvikela imvelo, ukonga amandla kanye nobuchwepheshe obuphezulu bezinto ezibonakalayo.Kwaziwa njengobuchwepheshe obusha bemboni eluhlaza ngekhulu lama-21.Ngokuthuthuka kwesayensi nobuchwepheshe, ukusetshenziswa kobuchwepheshe bokuphulukisa ukukhanya kuye kwathuthukiswa kusukela ebhodini lakudala eliphrintiwe kanye ne-photoresist kuya embotsheni yokwelapha ekhanyayo, uyinki kanye ne-adhesive.Inkambu yezicelo ibilokhu ikhula futhi yakha imboni entsha.

Imikhiqizo evame kakhulu yokwelapha ye-UV yizimbozo ze-UV, oyinki be-UV kanye nezinamatheliso ze-UV.Isici sazo esikhulu ukuthi zinezinga lokuphulukisa ngokushesha, ngokuvamile phakathi kwemizuzwana embalwa namashumi amasekhondi.Okushesha kakhulu kungelapheka ku-0.05 ~ 0.1s.Awomiswe ngokushesha futhi alapha phakathi kwezingubo ezihlukahlukene, oyinki nezinamatheliso okwamanje.

Ukwelashwa kwe-UV kuwukwelashwa kwe-UV.I-UV isifinyezo sesiNgisi se-UV.Ukwelapha kusho inqubo yokuguqula izinto zisuka kuma-molecule aphansi ziye kuma-polymer.Ukwelashwa kwe-UV ngokuvamile kubhekisela ezimweni zokuphulukisa noma izimfuneko zokunamathela (opende), oyinki, izinto ezinamathelayo (iglu) noma ezinye izinto zokuvala izimbiza ezidinga ukwelashwa nge-UV, okuhlukile ekwelapheni ukushisa, i-ejenti ebophayo (i-ejenti yokwelapha) yokwelapha, yemvelo. ukwelapha, njll. [1].

Izingxenye eziyisisekelo zemikhiqizo yokwelapha ukukhanya 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 zibalwa ngokwezinga lokusabela kwe-free radical polymerization: acryloyloxy > Methacryloyloxy > vinyl > allyl.Ngakho-ke, ama-oligomers asetshenziswa ekwelapheni ukukhanya okukhanyayo kwamahhala ikakhulukazi yizo zonke izinhlobo zama-acrylic acrylate, njenge-epoxy acrylate, i-polyurethane acrylate, i-polyester acrylate, i-polyether acrylate, i-acrylate resin noma i-vinyl resin, kanye ne-epoxy acrylate iyona esetshenziswa kakhulu i-Acrylic resin, i-polyurethane. i-resin ye-acrylic ne-polyester acrylic resin.Lawa ma-resin amathathu ethulwa kafushane ngezansi.

I-Epoxy acrylate isetshenziswa kakhulu futhi isetshenziswa kakhulu i-oligomer yokwelapha ukukhanya.Ilungiswa kusuka ku-epoxy resin kanye ne-(meth) acrylate.I-epoxy acrylate ingahlukaniswa ibe yi-bisphenol A epoxy acrylate, i-phenolic epoxy acrylate, i-epoxy acrylate eguquliwe kanye ne-epoxidated acrylate ngokuya ngohlobo lwesakhiwo.I-Bisphenol I-epoxy acrylate iyona esetshenziswa 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, kanye ne-resin eyinhloko ye-inki yokuphulukisa ukukhanya kanye ne-adhesive elula yokuphulukisa.

I-polyurethane acrylate

I-polyurethane acrylate (PUA) ingenye i-oligomer ebalulekile yokwelapha ukukhanya.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 ekwelapheni okukhanyayo, oyinki nama-adhesive.

I-polyester Acrylate

I-polyester acrylate (PEA) nayo i-oligomer evamile.Ilungiswa nge-acrylate ye-low molecular weight polyester glycol.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-polyester acrylates ngokuvamile anephunga eliphansi, ukucasuka okuncane, ukuguquguquka okuhle kanye nokumanzisa kwe-pigment, futhi afaneleka opende bemibala noyinki.Ukuze kuthuthukiswe izinga eliphezulu lokuphulukisa, i-multifunctional polyester acrylate ingalungiswa;I-Amine modified polyester acrylate ayikwazi nje ukunciphisa umthelela we-oxygen polymerization inhibition futhi ithuthukise izinga lokuphulukisa, kodwa futhi ithuthukise ukunamathela, isicwebezelisi nokumelana nokugqoka.

Ama-diluent asebenzayo ngokuvamile aqukethe amaqembu asebenzayo, angancibilikisa futhi anciphise ama-oligomers, futhi adlale indima ebalulekile enqubweni yokwelapha ukukhanya kanye nezakhiwo zefilimu.Ngokwenani lamaqembu asebenzayo aqukethwe, ama-diluent asebenzayo e-monofunctional 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 asebenzayo njenge-trimethylolpropane triacrylate, njll.

I-Initiator inethonya elibalulekile ezingeni lokuphulukisa lemikhiqizo yokwelapha ye-UV.Emikhiqizweni yokwelapha ye-UV, inani elingeziwe le-photoinitiator livamise ukuba ngu-3% ~ 5%.Ngaphezu kwalokho, ama-pigments kanye nezithasiselo zokugcwalisa nazo zinomthelela obalulekile ezindaweni zokugcina zemikhiqizo ephulukisiwe ye-UV.