Haɗa Na UV Curable Waterborne Polyurethane Acrylate Coatings Featured Hoton

Rubutun UV Curable Waterborne Polyurethane Acrylate Coatings

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Uv-wpua shafi yana kunshe da oligomer, photoinitiator, diluent mai aiki, da dai sauransu. Oligomer shine mafi mahimmanci a cikin suturar uv-wpua.Tsarinsa yana ƙayyade ainihin kaddarorin fim ɗin maganin UV, kamar taurin, sassauci, juriya na sawa, juriya na ruwa da juriya na lalata.Photoinitiator wani muhimmin sashi ne na tsarin warkarwa na UV, wanda ke taka muhimmiyar rawa a cikin azancin tsarin warkar da UV kuma yana shafar aikin ƙarshe na fim ɗin da aka warke.Ruwan Uv-wpua yana amfani da ruwa azaman diluent mai aiki, wanda ke rage yawan amfani da kaushi.

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Rubutun Ruwa na Polyurethane Acrylate

Oligomer a cikin rufin uv-wpua shine wpua, wanda shine babban ɓangaren sutura.Wpua gabaɗaya yana samuwa ta hanyar amsawar polyisocyanate, diol da hydroxyl acrylate.Isocyanates sun haɗa da isocyanates na aromatic, aliphatic isocyanates da alicyclic isocyanates, waɗanda ke shafar rigidity, juriya na yanayi da juriya na rawaya na wpua.Diols galibi sun haɗa da polyether diols da polyester diols, waɗanda ke shafar ƙarfin ƙarfi, laushi, juriya na zafi da juriya na hydrolysis na wpua.
Ƙungiyar NCO a cikin polyisocyanate tana amsawa tare da ƙungiyar hydroxyl na diol don samar da oligomer tare da ƙungiyoyin isocyanate a duka iyakar.2. 2,2-dihydroxymethylpropionic acid (DMPA) ana amfani dashi azaman diol don gabatar da ƙungiyoyin hydrophilic a cikin oligomer, kuma an ƙara 1,4-butanediol (BDO) don haɓaka sarkar;3. An yi amfani da Hydroxyethyl acrylate (HEA) don gabatar da ƙungiyoyi masu aiki na hoto waɗanda ke ɗauke da shaidu biyu marasa ƙarfi don maganin UV.Bayan an kammala matakin mataki uku, ana ƙara triethanolamine (teoa) don maganin neutralization, kuma a ƙarshe an ƙara ruwa don kwaikwaya shi cikin ruwan shafa fuska.
Sauran malaman sun haɗa uv-wpua tare da kyakkyawan aiki ta amfani da kayan aikin roba kamar Polyhexylene glycol, isophorone diisocyanate, PETA, da dimethylbutyric acid (DMBA).An haɗa nau'ikan wpua guda uku daga polyacrylate da aka shirya tare da ƙungiyar carboxyl a cikin sarkar gefe, polyether polyol, isophorone diisocyanate da hydroxyethyl acrylate.Bayan cikakken bincike na gwaji na jiki da gwajin aikace-aikacen, an yi la'akari da cewa cikakken aikin polyether wpua ya fi kyau.Amfani da toluene diisocyanate, polyhexanediol, 2,2-dihydroxymethylpropionic acid da hydroxyethyl methacrylate a matsayin albarkatun kasa, prepolymer aka farko hada, sa'an nan triethylamine aka kara a matsayin neutralizing wakili, da ruwa da aka yi amfani da matsayin sarkar extender watsawa a cikin ruwa don samar da barga wpua ruwan shafa fuska.