Ukuchayeka kusho ukuthi ngaphansi kwemisebe yokukhanya kwe-ultraviolet, i-photoinitiator imunca amandla okukhanya bese ibola ibe ama-radicals mahhala, bese ama-free radicals aqalise i-photopolymerization monomer ukwenza ukusabela kwe-polymerization kanye nokuxhumanisa.Ukuchayeka ngokuvamile kwenziwa emshinini wokuchayeka wezinhlangothi ezimbili ozenzakalelayo.Manje umshini wokuchayeka ungahlukaniswa ube yi-air-cooled kanye ne-water-cooled ngokuvumelana nendlela yokupholisa yomthombo wokukhanya.
Izinto Ezithinta Ikhwalithi Yesithombe Sokuvezwa
Ngokungeziwe ekusebenzeni kwe-photoresist yefilimu, izici ezithinta ikhwalithi yezithombe zokuchayeka ukukhethwa kwemithombo yokukhanya, ukulawulwa kwesikhathi sokuchayeka (inani lokuchayeka), kanye nekhwalithi yamapuleti ezithombe.
1) Ukukhethwa komthombo wokukhanya
Noma yiluphi uhlobo lwefilimu lunejika lalo elihlukile lokumunca i-spectral, futhi noma yiluphi uhlobo lomthombo wokukhanya luphinde lube nejika lalo le-spectral elikhiphayo.Uma inani eliphakeme lokumuncwa kwe-spectral lohlobo oluthile lwefilimu lingadlulana noma ngokuvamile lidlulele nesiqongo esiyinhloko sokukhishwa kwe-spectral komthombo othile wokukhanya, kokubili kufanelana kahle futhi umphumela wokuchayeka ungcono kakhulu.
Ijika lokumuncwa kwe-spectral lefilimu eyomile yasekhaya libonisa ukuthi isifunda sokumuncwa kwe-spectral singama-310-440 nm (nanometer).Kusukela ekusabalaliseni amandla emithombo eminingana yokukhanya, kuyabonakala ukuthi isibani se-pick, isibani se-mercury esicindezela kakhulu, nesibani se-iodine gallium sinokushuba okukhulu kwemisebe ebangeni lamaza angama-310-440nm, okuwumthombo wokukhanya ofaneleka. ukuchayeka kwefilimu.Izibani ze-Xenon azifanelekileukuchayekaamafilimu omile.
Ngemuva kokuthi uhlobo lomthombo wokukhanya lukhethiwe, umthombo wokukhanya onamandla amakhulu nawo kufanele ucatshangelwe.Ngenxa yokuqina kokukhanya okuphezulu, ukulungiswa okuphezulu, nesikhathi sokuchayeka esifushane, izinga lokuwohloka kokushisa kwepuleti lezithombe nalo lincane.Ngaphezu kwalokho, ukuklama kwezibani nakho kubaluleke kakhulu.Kudingekile ukuzama ukwenza isigameko sibe lula futhi sihambisane, ukuze ugweme noma unciphise umphumela omubi ngemva kokuchayeka.
2) Ukulawulwa kwesikhathi sokuchayeka (inani lokuchayeka)
Phakathi nenqubo yokuchayeka, i-photopolymerization yefilimu ayiyona "i-shot-one" noma "i-one-exposure", kodwa ngokuvamile ihamba ngezigaba ezintathu.
Ngenxa yokuvinjelwa kwe-oksijeni noma okunye ukungcola okuyingozi ku-membrane, inqubo yokungeniswa iyadingeka, lapho ama-radicals mahhala akhiqizwa ukubola komqalisi adliwe yi-oxygen nokungcola, futhi i-polymerization ye-monomer incane.Kodwa-ke, lapho isikhathi sokungeniswa sesiphelile, i-photopolymerization ye-monomer iqhubeka ngokushesha, futhi i-viscosity yefilimu ikhula ngokushesha, isondela ezingeni lokushintsha okungazelelwe.Lesi yisigaba sokusetshenziswa ngokushesha kwe-photosensitive monoma, futhi lesi sigaba silandisa ngokuningi kokuchayeka phakathi nenqubo yokuchayeka.Isikali sesikhathi sincane kakhulu.Uma iningi le-photosensitive monomer lisetshenzisiwe, lingena endaweni yokunciphisa i-monomer, futhi ukusabela kwe-photopolymerization kuqediwe ngalesi sikhathi.
Ukulawula okulungile kwesikhathi sokuchayeka kuyisici esibaluleke kakhulu ekutholeni izithombe ezinhle zokumelana nefilimu eyomile.Lapho ukuvezwa kunganele, ngenxa ye-polymerization engaphelele ye-monomers, ngesikhathi senqubo yokuthuthukiswa, ifilimu yokunamathisela iyakhukhumala futhi ibe thambile, imigqa ayicacile, umbala ubumnyama, futhi uhlanjululwe, futhi ifilimu i-warps ngesikhathi sokuqala. -plating noma inqubo electroplating., ukugeleza kwamanzi, noma ukuwa.Uma ukuchayeka kuphezulu kakhulu, kuzodala izinkinga ezinjengobunzima ekuthuthukisweni, ifilimu ephukayo, neglue esele.Okubi nakakhulu ukuthi ukuchayeka okungalungile kuzodala ukuchezuka kobubanzi bomugqa wesithombe.Ukuchayeka ngokweqile kuzonciphisa imigqa yokucwenga kwephethini futhi kwenze imigqa yokuphrinta nokushumeka ibe mikhulu.Ngokuphambene nalokho, ukuchayeka okwanele kuzokwenza imigqa yephethini yokucwenga ibe mincane.Imahholoze ukuze wenze imigqa ephrintiwe ibe mncane.