Pheko ea UV ke pholiso ea ultraviolet, UV ke khutsufatso ea mahlaseli a UV a ultraviolet, pheko e bolela mokhoa oa ho fetola lintho ho tloha limolek'hule tse tlase ho ea ho lipolymer.Pheko ea UV ka kakaretso e bolela maemo a pheko kapa litlhoko tsa lipente (lipente), li-inks, likhomaretsi (likhomaretsi) kapa li-sealants tse ling tse hlokang ho phekoloa ka leseli la ultraviolet, le fapaneng le pheko ea ho futhumatsa, pheko ea likhomaretsi (lisebelisoa tse folisang), pheko ea tlhaho, joalo-joalo.
Lefapheng la lipolymer tsa lik'hemik'hale, UV e boetse e sebelisoa e le khutsufatso ea phekolo ea mahlaseli a kotsi, UV, ke hore, phekolo ea mahlaseli a kotsi a UV, ke tšebeliso ea mahlaseli a mahlaseli a kotsi a mahlaseli a mahlaseli a kotsi le leqhubu le lekhutšoanyane (300-800 nm) tlas'a mahlaseli a mahlaseli a kotsi, UV ea metsi. lisebelisoa tse ka har'a photoinitiator tse hlohlellelitsoeng ho ba li-radicals kapa li-cations tsa mahala, ka hona li baka lisebelisoa tsa polymer (resin) tse nang le lihlopha tse sebetsang tse sebetsang ka har'a filimi e sa qhibilihisitsoeng le e sa qhibilihe, ke theknoloji e ncha ea ts'ireletso ea tikoloho le tlhahiso e tlase ea VOC e hlahang lilemong tsa bo-60. ea lekholong la bo20 la lilemo.Ka mor'a lilemo tsa bo-80 tsa lekholo la bo20 la lilemo, Chaena e tsoetse pele ka potlako.
Li-oligomers li na le viscosity e phahameng, 'me e le ho thusa ho haha le ho ntlafatsa lebelo la ho folisa ha crosslinking, hoa hlokahala ho eketsa monomers e le li-diluents tse sebetsang ho fetola rheology ea resin.Sebopeho sa diluent e sebetsang se na le tšusumetso ea bohlokoa ho thepa ea filimi ea ho qetela ea ho roala e kang ho phalla, ho thella, ho nosetsa, ho ruruha, ho fokotseha, ho khomarela le ho falla ka har'a filimi ea ho roala.Li-diluent tse sebetsang li ka sebetsa ka mokhoa o le mong kapa tsa sebetsa ka bongata, 'me ea morao-rao e le betere hobane e ntlafatsa ho kopanya ha ho folisa.Litlhoko tsa ts'ebetso bakeng sa diluent e sebetsang ke, bokhoni ba ho hlapolla, ho qhibiliha, monko, bokhoni ba ho fokotsa viscosity ea bohareng, volatility, tshebetso, tsitsipano ea holim'a metsi, shrinkage nakong ea polymerization, mocheso oa phetoho ea khalase (Tg) ea homopolymer, tšusumetso ho kakaretso. ho phekola kapele le chefo.Monomere e sebelisitsoeng e lokela ho ba monoma e hlabang letlalo le eo boleng ba eona bo sa feteng 3 joalokaha ho laetsoe ke Draize.Monomer e tloaelehileng e sebelisoang e le diluent e sebetsang ke tripropylene glycol diacrylate (TPGDA).
Lisebelisoa tse potlakileng tsa ho khutlisa polymerization mochining oa lik'hemik'hale oa pheko ea UV li hlile li finyelloa ka ho hlahisa karabelo ea mahala tlas'a li-photoinitiators le/kapa li-photosensitizers le maemo a mabone a ts'ebetso e phahameng.Li-photoinitiators tse hlahisang li-radicals tsa mahala le li-intermediate tsa cationic li ka sebelisoa.Leha ho le joalo, indastering ea kajeno, ea pele e atisa ho ba le mebala (ke hore, photoinitiator e ka hlahisang li-radicals tsa mahala).
Hona joale, mahlaseli a ultraviolet a sebelisoang ka ho fetisisa ke 365nm, 253.7nm, 185nm, joalo-joalo Likarolo li kenyelletsa ho omisa hang-hang, litšenyehelo tse tlaase tsa ts'ebetso, boleng bo ntlafetseng, sebaka sa polokelo se fokotsehileng, se hloekileng le se sebetsang hantle.Matla a lebone a sebelisoang hangata a feta 1000W, a sebelisa ultraviolet UVA UVC, joalo-joalo, eo UVC e sebelisang mabone a amalgam a mangata.
Nako ea poso: Oct-19-2022