I-UV iwuhlobo lokumboza olungaphola ngokushesha lube yifilimu ngemizuzwana embalwa ngaphansi kwemisebe ye-ultraviolet (UV).I-UV igoqwe ngokuzenzakalelayo futhi ifuthwe ebhodini lefenisha ngokusebenzisa imishini nemishini.Ngaphansi kokukhanya kwe-ultraviolet, ikhuthaza ukubola kwesiqalisi, ikhiqize ama-radicals mahhala, ibangele ukusabela kwe-resin, futhi iqine ngokushesha ibe ifilimu ngaphandle kokushintshashintsha kwe-solvent.Ngakho-ke, iyasebenza kakhulu, iluhlaza futhi inobungani bemvelo.
Ngaphansi komkhuba ojwayelekile we-hydration, i-Waterborne UV coatings nayo isetshenziswa ngempumelelo ngokhuni, ipulasitiki, ukuphrinta, amakhemikhali wansuku zonke neminye imikhakha ngenxa yobungane bemvelo kanye nobungane bokwakha.Izinto ezingavuthiwe zidlala indima ebalulekile.Ukuqamba okusha okuqhubekayo kokusebenza, izici kanye nezixazululo zokusetshenziswa kwezingubo eziphuma emanzini zikhuthaza inqubo ye-resin hydration.
Isistimu eyinhlanganisela ye-epoxy acrylate / polyurethane acrylate
I-photosensitive oligomer iyingxenye eyinhloko ye-resin ephulukisiwe ye-UV, enquma izici eziyisisekelo ze-resin ephulukisiwe.Zonke izinhlobo zama-matrix resins zinezinzuzo zazo ezingenakubuyiseleka, kodwa nakanjani zizoba namaphutha.Isibonelo, ifilimu yokuphulukisa esekelwe ku-epoxy resin inokuqina okuphezulu, ukunamathela okuhle, ukucwebezela okuphezulu nokumelana namakhemikhali okuhle kakhulu, kodwa inobubi bokuguquguquka okuncane.Esinye isibonelo ukuthi i-polyurethane esekelwe i-resin inezakhiwo ezinhle kakhulu ezifana nokumelana nokugqoka kanye nokumelana nokuqala, kodwa ukumelana nesimo sezulu akwanele.Abacwaningi basebenzisa izindlela zokuhlanganisa noma ezixubile ukuze bahlanganise lezi zinto zombili, ukuze benze ukuntuleka kwenhlaka eyodwa futhi bakhe uhlelo olunazo zombili izici ezinhle kakhulu.
2 i-dendritic noma i-hyperbranched system
Ama-dendrimers alaphekayo e-UV atholakala emanzini noma ama-oligomers ane-hyperbranched awuhlobo olusha lwama-polymers anesakhiwo esiyindilinga noma se-dendritic futhi akukho okubambekayo phakathi kwamaketanga amangqamuzana.Ngaphezu kwalokho, isakhiwo se-polymer esinamagatsha amaningi siqukethe inani elikhulu lamaqembu okuphela asebenzayo.Lawa maqembu okuphela asebenzayo aguqulwa ukuze alungise izakhiwo ze-polymer futhi asetshenziswe ezinkambini ezithile.Uma kuqhathaniswa nama-polymers aqondile anesisindo esifanayo samangqamuzana, ama-oligomers ane-hyperbranched anezindawo ezinhle kakhulu ezifana nephuzu elincibilikayo eliphansi, i-viscosity ephansi, ukuchithwa kalula kanye nokusebenza kabusha okuphezulu.Ziyizinto ezifanelekile zokukhanya kwamanzi okuphulukisa ama-matrix resins.I-polyester ye-hyperbranched esekelwe emanzini eyakhiwe nge-polyhydroxy functional aliphatic polyester njengoba ingqikithi inganciphisa amanzi e-dilution futhi ibonise umphumela omuhle wokunciphisa i-viscosity ngenxa yokuncibilika kwayo okuhle kwamanzi kanye ne-viscosity ephansi.
3 epoxy soya uwoyela acrylate
Uwoyela wesoya we-Epoxy unezinzuzo zezindleko eziphansi, ukuvikelwa kwemvelo, uchungechunge olude lwamamolekyuli kanye nokuminyana okuphakathi kokuxhumanisa.Kungathuthukisa kakhulu ukuguquguquka nokunamathela kokugqoka.Eminyakeni yamuva nje, isiphenduke indawo yokucwaninga emkhakheni wezingubo zasekhaya nakwamanye amazwe.Izimpumelelo ezinhle zenziwe kuwoyela we-epoxy soya acrylate kanye nowoyela wesoya we-epoxy oguquliwe we-acrylate we-UV wamahhala wokuphulukisa ama-radical coatings e-China.Inkampani yaseCub e-United States yenze ukukhiqizwa kwezentengiso, okufana ne-ebercy860.Indlela yokuhlanganisa kawoyela we-epoxy soya acrylate ngokuvamile iyindlela yokuguqula i-semi ester, okuwukwenza uwoyela wesoya we-epoxy nge-acrylic acid.
Isikhathi sokuthumela: May-25-2022