Ukuthuthukiswa okusha kwe-Waterborne UV resin

1. Uhlelo lwe-hyperbranched

Njengohlobo olusha lwe-polymer, i-hyperbranched polymer inesakhiwo esiyindilinga, inani elikhulu lamaqembu wokugcina asebenzayo futhi akukho mazombezombe phakathi kwamaketanga amangqamuzana.Ama-polymers ane-hyperbranched anezinzuzo zokuhlakazeka kalula, indawo encibilikayo ephansi, i-viscosity ephansi kanye nokusebenza kabusha okuphezulu.Ngakho-ke, amaqembu e-acryloyl namaqembu e-hydrophilic angasungulwa ukuze ahlanganise ama-oligomers okwelapha ukukhanya kwamanzi, okuvula indlela entsha yokulungiswa kwe-Waterborne UV resin.

I-polyester (i-whpua) elaphekayo e-UV eyelaphekayo yalungiselelwa ukusabela kwe-Hyperbranched Polyester ecebile ngamaqembu e-hydroxyl ane-succinic anhydride ne-ipdi-hea prepolymer, futhi ekugcineni yasuswa nge-organic amine ukuze yakhe usawoti.Imiphumela ibonisa ukuthi izinga lokuphulukisa ukukhanya kwe-resin liyashesha futhi izakhiwo zomzimba zinhle.Ngokukhula kokuqukethwe kwengxenye eqinile, izinga lokushisa lengilazi le-resin liyakhula, ubulukhuni namandla aqinile nawo ayanda, kodwa ubude ngesikhathi sekhefu buyehla.Ama-polyester angama-Hyperbranched alungiswa kusuka kuma-polyanhydrides nama-epoxides monofunctional.I-Glycidyl methacrylate yethulwa ukuze isabele ngokuqhubekayo ngamaqembu e-hydroxyl ne-carboxyl ama-polymer ane-hyperbranched.Ekugcineni, i-triethylamine yengezwa ukuze kuncishiswe futhi kwakhe usawoti ukuze kutholwe ama-polyester ane-hyperbranched e-UV elaphekayo.Imiphumela yabonisa ukuthi lapho okuqukethwe kweqembu le-carboxyl ekugcineni kwe-resin ye-hyperbranched esekelwe emanzini, kungcono ukuncibilika kwamanzi;Izinga lokuphulukisa le-resin liyakhuphuka ngokwanda kwamabhondi aphindwe kabili esibulalayo.

2 i-organic-inorganic hybrid system

Ukukhanya kwe-UV okune-Waterborne kwelashwe i-organic / inorganic hybrid system iyinhlanganisela esebenzayo ye-Waterborne UV resin nezinto ezingaphili.Izinzuzo zezinto ezingaphili ezifana nokumelana nokugqoka okuphezulu kanye nokumelana nesimo sezulu esiphezulu kufakwa ku-resin ukuze kuthuthukiswe izici eziphelele zefilimu eselashiwe.Ngokwethula izinhlayiya ze-inorganic ezifana ne-nano-SiO2 noma i-montmorillonite ohlelweni lokwelapha lwe-UV ngokusebenzisa indlela yokusabalalisa okuqondile, indlela ye-sol-gel noma indlela yokuhlanganisa, isistimu ye-UV yokuphulukisa i-organic / inorganic hybrid system ingalungiswa.Ngaphezu kwalokho, i-organosilicon monomer ingafakwa ochungechungeni lwamangqamuzana e-oligomer ye-UV enamanzi.

I-Organo / inorganic hybrid lotion (Si PUA) yalungiswa ngokwethula amaqembu e-polysiloxane engxenyeni ethambile ye-polyurethane ene-terminal hydroxybutyl polydimethylsiloxane (PDMS) kanye nokuhlanjululwa ngama-acrylic monomers.Ngemuva kokuphulukisa, ifilimu yepende inezakhiwo ezinhle zomzimba, i-angle yokuxhumana ephezulu kanye nokumelana kwamanzi.I-Hyperbranched hybrid polyurethane kanye ne-hyperbranched polyurethane ephulukisiwe ukukhanya kwalungiswa nge-polyhydroxy hyperbranched polyurethane eyenziwe ngokwayo, i-succinic anhydride, i-silane coupling agent KH560, i-glycidyl methacrylate (GMA) ne-hydroxyethyl methacrylate.Bese, i-Si02 / Ti02 ye-organic-inorganic hybrid sol ye-hyperbranched polyurethane ephulukisiwe ekhanyayo yalungiswa ngokuxutshwa kanye ne-hydrolyzing ne-tetraethyl orthosilicate ne-n-butyl titanate ngezilinganiso ezihlukene.Imiphumela ibonisa ukuthi ngokwanda kokuqukethwe kwe-inorganic, ubulukhuni be-pendulum bokwembozwa kwe-hybrid buyanda futhi ukuqina kwendawo kuyanda.Izinga eliphezulu le-SiO2 hybrid coating lingcono kunele-Ti02 hybrid coating.

3 uhlelo lokuphulukisa olukabili

Ukuze kuxazululwe ukushiyeka kokuphulukiswa kwezinhlangothi ezintathu kwe-Waterborne UV resin kanye nokuphulukiswa kwe-coating ewugqinsi nohlelo olunemibala, futhi kuthuthukiswe izici eziphelele zefilimu, abacwaningi bakha uhlelo lokuphulukisa olukabili oluhlanganisa ukuphulukiswa kokukhanya nezinye izinhlelo zokuphulukisa.Njengamanje, ukuphulukiswa okukhanyayo, ukuphulukiswa okushisayo, ukuphulukisa ukukhanya / ukuphulukiswa kabusha kwe-redox, ukwelapha ukukhanya okukhanyayo kwamahhala / ukwelapha ukukhanya kwe-cationic kanye nokuphulukisa ukukhanya / ukuphulukisa okumanzi kuyizinhlelo ezivamile zokwelapha ezimbili, futhi ezinye izinhlelo zisetshenzisiwe.Isibonelo, i-Adhesive electronic protective adhesive iwuhlelo olumbaxambili lokuphulukisa ukukhanya / i-redox noma ukuphulukisa ukukhanya / ukwelapha okumanzi.

I-monomer ethyl acetoacetate methacrylate (amme) esebenzayo ye-monomer yethulwa ku-polyacrylic acid lotion, futhi iqembu lokuphulukisa ukukhanya lasungulwa ngokusabela kukaMichael ekushiseni okuphansi ukuze kuhlanganiswe ukuphulukiswa kokushisa / uv ukuphulukisa i-polyacrylate yamanzi.Yomile ekushiseni okungaguquki okungu-60 ° C, 2 x 5 Ngaphansi kwesimo se-6 kW high-pressure mercury lamp irradiation, ukuqina kwe-resin ngemva kokwakhiwa kwefilimu yi-3h, ukumelana notshwala izikhathi ezingu-158, futhi ukumelana ne-alkali yi-24. amahora.

I-4 epoxy acrylate / polyurethane acrylate system composite

I-epoxy acrylate coating inezinzuzo zobulukhuni obuphezulu, ukunamathela okuhle, isicwebezelisi esiphezulu kanye nokumelana okuhle kwamakhemikhali, kodwa inokuguquguquka okungekuhle kanye ne-brittleness.I-Waterborne polyurethane acrylate inezici zokumelana okuhle nokuguquguquka, kodwa ukumelana nesimo sezulu esibi.Ukusebenzisa ukuguqulwa kwamakhemikhali, ukuxuba okubonakalayo noma izindlela ezixubile ukuze kuhlanganiswe ngempumelelo ama-resin amabili kungathuthukisa ukusebenza kwe-resin eyodwa futhi kunikeze ukudlala okugcwele ezinzuzweni zayo, ukuze kuthuthukiswe isistimu yokwelapha ye-UV esebenza kahle kakhulu enezinzuzo zombili.

5 macromolecular noma polymerizable photoinitiator

Ama-photoinitiators amaningi ama-aryl alkyl ketone ama-molecule amancane, angakwazi ukubola ngokuphelele ngemva kokwelashwa okukhanyayo.Ama-molecule amancane asele noma imikhiqizo ye-photolysis izothuthela endaweni enamathelayo, ibangele ukuphuzi noma iphunga, okuzophazamisa ukusebenza nokusetshenziswa kwefilimu eselashiwe.Ngokwethula ama-photoinitiators, amaqembu e-acryloyl namaqembu e-hydrophilic abe ama-polymers ane-hyperbranched, abacwaningi bahlanganisa ama-photoinitiators atholakala emanzini ama-macromolecular polymerizable ukuze banqobe ububi bezithombe zamangqamuzana amancane.