Pholiso ea UV e bolela pheko ea UV e ka har'a sistimi ea kalafo ea radiation (e bitsoang kalafo ea UV).Theknoloji ea ho phekola mahlaseli ke theknoloji e ncha e tala, e bolelang mokhoa oa ho etsa polymerization hang-hang le ho phekola ka mokhoa o kopanyang oa tsamaiso ea mokelikeli ka leseli la ultraviolet, lebone la elektronike le mahlaseli a r-ray.E na le melemo ea ho boloka matla, ts'ebetso e phahameng, ts'ebetso e babatsehang ea ho roala, ho boloka sekhomaretsi, tšireletso le tšireletso ea tikoloho, khanya e phahameng, nako e telele, joalo-joalo Lejoe la tlhaho ka boeona le na le mefokolo ea tlhaho, e kang likoting, mapetsong, lipoleiti tse sa tšoaneng, joalo-joalo. (ka bobeli granite le 'mabole li teng).
Litšobotsi tsa mokhoa oa ho haha:
1) Ts'ebetso e ntle ea ho roala: Ho roala ha UV ho na le ts'ebetso e ntle haholo, botlolo bo phahameng, boima bo phahameng, le khanyetso e ntle ea lik'hemik'hale.Ho ntlafatsa ka katleho boleng ba ho lokisa likoti tsa majoe.
2) Tšireletseho le ts'ireletso ea tikoloho: Hobane lebelo la ho folisa UV le potlakile haholo, ho ntšoa ha metsoako ea lintho tse hlapollang moeeng ho fokotsehile ho fihlela ho zero, e bolokehileng hape e baballang tikoloho.
Molao-motheo oa ts'ebetso:
Liaparo tsa UV ke litlolo tse phekolehang tsa UV.Ka mor'a hore litlolo tse phekolehang tsa UV li khantšitsoe ke khanya ea UV, photoinitiator e qala ka ho monya matla a mahlaseli a UV 'me ea kenngoa tšebetsong.Lielektrone tse karolong e ka ntle ea limolek'hule tsa eona li qhoma 'me li hlahisa setsi se sebetsang ka nako e khutšoanyane haholo.Ebe setsi se sebetsang se sebetsa le lihlopha tsa unsaturated ka har'a resin, e leng se etsang hore likamano tse peli tsa resin e hlahisang leseli le limolek'hule tse sebetsang li khaotsoe, e leng se etsang hore ho be le karabelo e tsoelang pele ea polymerization, e le hore li tšela lihokelo ho theha filimi.Boithuto ba lik'hemik'hale ba lik'hemik'hale bo bonts'a hore mochini oa UV o folisang liaparo tsa UV ke polymerization ea mahala ea radical chain.Ntlha ea pele, mohato oa photoinitiation;Ea bobeli ke mohato oa karabelo ea kholo ea ketane.Mothating ona, ha kholo ea ketane e ntse e tsoela pele, tsamaiso e tla hokahanngoa le ho tiisoa hore e be filimi;Li-radicals tsa poso tsa Z li phethela pheliso ea ketane ka ho kopanngoa kapa ho se leka-lekane.
1. Oligomer
Prepolymer, eo hape e tsejoang e le oligomer kapa resin, ke masapo a sekhomaretsi sa UV.Haholo-holo e bua ka sehlopha sa li-polymers tsa limolek'hule tse nang le sebopeho sa bond e habeli.E tsoela pele ho arabela le ho theha 'mele o phekolang o hokahaneng ka mor'a ho atolosoa, o fanang ka thepa ka thepa ea mantlha ea' mele le ea lik'hemik'hale.Ka mohlala, viscosity, tensile matla, ho kuta matla, thata le ho latela.
2. Monomer
Li-monomers, tse tsejoang hape e le li-reactive diluents, hangata ke limolek'hule tse nyane tse nang le li-bond tse peli kapa tse peli, tse sebelisoang haholo ho lokisa viscosity ea sistimi le ho nka karolo ho polymerization, empa hape li na le tšusumetso ho sekhahla sa polymerization le thepa ea thepa.Li-monomers li ka aroloa ka li-monomers tse sebetsang hantle, li-monomers tse sebetsang ka bobeli le li-monomers tse sebetsang ka bongata ho latela tekanyo ea ts'ebetso.Li-monofunctional monomers li na le molemo ho ntlafatsa ho feto-fetoha ha maemo le ho khomarela ha colloid;Li-monomers tse sa sebetseng le li-monomer tse sebetsang ka bongata ha li sebetse feela joalo ka li-diluent, empa hape li sebetsa joalo ka li-agent tse kopanyang.Li na le tšusumetso ea bohlokoa ho thata, ho tiea le matla.
3. Li-photoinitiators)
Li-photoinitiators ke li-intermediate tse sebetsang tse khonang ho monya mahlaseli a kotsi kapa leseli le bonahalang le ho hlahisa bokhoni ba ho qala polymerization ka liphetoho tsa lik'hemik'hale.Ke likarolo tsa bohlokoa tsa sistimi ea photopolymerization mme li bapala karolo ea makhaola-khang ho sensitivity (tekanyo ea ho folisa) ea sistimi ea pholiso ea UV.Li-photoinitiators li kenyelletsa li-photoinitiators tsa mahala le li-cationic photoinitiators, tse sebelisoang ho litsamaiso tsa mahala tsa radical le litsamaiso tsa cationic ka ho latellana.
Nako ea poso: Nov-24-2022