Ukadaulo wamachiritso a UV ndi mtundu waukadaulo wapamwamba kwambiri, kuteteza chilengedwe, kupulumutsa mphamvu komanso ukadaulo wapamwamba kwambiri.Imadziwika ngati ukadaulo watsopano wamakampani obiriwira m'zaka za zana la 21.Ndi chitukuko cha sayansi ndi ukadaulo, kugwiritsa ntchito ukadaulo wamachiritso a UV kwapangidwa kuyambira pama board akale kwambiri osindikizidwa ndi ma photoresists mpaka zokutira zochiritsa za UV, inki ndi zomatira.Gawo lofunsira lakhala likukulirakulira, ndikupanga bizinesi yatsopano.
Zopangira zochiritsa za UV nthawi zambiri zimagawidwa kukhala zokutira za UV, inki za UV ndi zomatira za UV.Chinthu chawo chachikulu ndi chakuti ali ndi chiwopsezo chofulumira, makamaka pakati pa masekondi angapo ndi makumi a masekondi, ndipo othamanga kwambiri amatha kuchiritsidwa mkati mwa 0.05 ~ 0.1s.Ndiwo kuyanika ndi kuchiritsa mwachangu pakati pa zokutira, inki ndi zomatira zosiyanasiyana pakali pano.
Kuchiritsa kwa UV kumatanthauza kuchiritsa kwa UV.UV ndi chidule cha Chingerezi cha UV.Kuchiritsa kumatanthauza njira yomwe zinthu zimasintha kuchokera ku mamolekyu otsika kupita ku ma polima.Kuchiritsa kwa UV nthawi zambiri kumatanthauza machiritso kapena zofunikira za zokutira (zopaka), inki, zomatira (zomatira) kapena zosindikizira zina zomwe zimafunikira kuchiritsa kwa UV, zomwe ndizosiyana ndi kuchiritsa kwa kutentha, kuchiritsa ndi zomatira (machiritso), kuchiritsa kwachilengedwe, ndi zina zambiri. [1].
Zida zoyambira zopangira machiritso a UV zimaphatikizapo oligomers, diluents yogwira, ma photoinitiators, zowonjezera ndi zina zotero.Oligomer ndiye gulu lalikulu lazinthu zochiritsira za UV, ndipo magwiridwe ake amatsimikizira magwiridwe antchito azinthu zochiritsidwa.Chifukwa chake, kusankha ndi kapangidwe ka oligomer mosakayikira ndichinthu chofunikira kwambiri pakupanga mankhwala ochiritsa a UV.
Zomwe oligomers amafanana ndikuti onse ali ndi Unsaturated double bond resins amawerengedwa ndi momwe amachitira polima: acryloyloxy> methacrylyloxy> vinyl> allyl. monga epoxy acrylate, polyurethane acrylate, polyester acrylate, polyether acrylate, acrylate resin kapena vinyl resin, ndipo zomwe zimagwiritsidwa ntchito kwambiri ndi epoxy acrylate resin, polyurethane acrylate resin ndi polyester acrylic resin.Ma resin atatu awa akufotokozedwa mwachidule pansipa.
Epoxy acrylate
Epoxy acrylic acid mtengo ndiye wogwiritsidwa ntchito kwambiri komanso kuchuluka kwakukulu kwa oligomer yochiritsa ya UV pakadali pano.Amapangidwa kuchokera ku epoxy resin ndi (meth) acrylate.Ma epoxy acrylates amatha kugawidwa mu bisphenol A epoxy acrylates, phenolic epoxy acrylates, modified epoxy acrylates ndi epoxidized acrylates malinga ndi mapangidwe awo, ndi bisphenol A epoxy acrylates amagwiritsidwa ntchito kwambiri.
Bisphenol A epoxy acrylate ndi imodzi mwa oligomers omwe ali ndi liwiro lachangu kwambiri lochiritsa.Filimu yochiritsidwa imakhala ndi kuuma kwakukulu, gloss yapamwamba, kukana kwa mankhwala abwino kwambiri, kukana kutentha kwabwino komanso magetsi.Kuphatikiza apo, bisphenol A oxygen exchange acrylate ili ndi njira yosavuta yopangira komanso mtengo wotsika.Chifukwa chake, nthawi zambiri amagwiritsidwa ntchito ngati utomoni waukulu wamapepala ochiritsa opepuka, matabwa, pulasitiki ndi zokutira zachitsulo, komanso ngati utomoni waukulu wochiritsa inki ndi zomatira zowala.
Polyurethane acrylate
Polyurethane acrylate (PUA) ndi oligomer ina yofunika yochiritsika ndi UV.Amapangidwa ndi masitepe awiri a polyisocyanate, diol yautali wautali ndi hydroxyl acrylate.Chifukwa cha mapangidwe angapo a ma polyisocyanates ndi ma diol azitali zazitali, ma oligomer okhala ndi katundu wokhazikika amapangidwa kudzera mu kapangidwe ka maselo.Chifukwa chake, ndi oligomers omwe ali ndi mitundu yambiri yazogulitsa pakadali pano, ndipo amagwiritsidwa ntchito kwambiri pakuyala kwa UV, inki ndi zomatira.
Polyester Acrylate
Polyester acrylate (PEA) ndiwonso oligomer wamba, omwe amapangidwa kuchokera ku polyester glycol yotsika kwambiri yama cell ndi acrylate.Polyester acrylate imadziwika ndi mtengo wotsika komanso kukhuthala kotsika.Chifukwa cha kukhuthala kwake kochepa, acrylate ya polyester imatha kugwiritsidwa ntchito ngati oligomer komanso diluent yogwira.Kuphatikiza apo, ma polyester acrylates ambiri amakhala ndi fungo lochepa, kupsa mtima pang'ono, kusinthasintha kwabwino komanso kunyowa kwa pigment, ndipo ndi oyenera utoto wamitundu ndi inki.Kuti apititse patsogolo kuchiritsa kwakukulu, ma polyester acrylate amitundu yambiri amatha kukonzedwa;Amine kusinthidwa poliyesitala acrylate sangathe kuchepetsa chikoka cha mpweya polymerization chopinga, kusintha mlingo machiritso, komanso kusintha adhesion, gloss ndi kuvala kukana.
Zosakaniza zogwira ntchito nthawi zambiri zimakhala ndi magulu othandizira, omwe amatha kusungunula ndi kusungunula oligomers, ndikugwira ntchito yofunikira pakuchiritsa kwa UV ndi filimu.Malinga ndi kuchuluka kwa magulu ochitapo kanthu, zodziwikiratu zomwe zimagwira ntchito limodzi ndi isodecyl acrylate, lauryl acrylate, hydroxyethyl methacrylate, glycidyl methacrylate, ndi zina zambiri;Bifunctional yogwira diluent monga polyethylene glycol diacrylate mndandanda, dipropylene glycol diacrylate, neopenyl glycol diacrylate, etc;Multifunctional yogwira diluents monga trimethylolpropane triacrylate, etc. [2].
Woyambitsa ali ndi chikoka chofunikira pakuchiritsa kwa zinthu zochiritsa za UV.M'zinthu zochizira UV, kuchuluka kwa photoinitiator nthawi zambiri kumakhala 3% ~ 5%.Kuphatikiza apo, inki ndi zowonjezera zowonjezera zimakhala ndi gawo lofunikira pakumaliza kwa zinthu zochiritsidwa ndi UV.
Nthawi yotumiza: Jun-15-2022