Kev tsim kho tshiab ntawm Waterborne UV resin

1. Hyperbranched system

Raws li ib yam tshiab ntawm polymer, hyperbranched polymer muaj ib tug kheej kheej qauv, ib tug loj tus naj npawb ntawm active pab pawg neeg kawg thiab tsis winding ntawm molecular chains.Hyperbranched polymers muaj qhov zoo ntawm kev tawg yooj yim, qis melting point, tsawg viscosity thiab siab reactivity.Yog li ntawd, acryloyl pawg thiab hydrophilic pawg tuaj yeem ua tswvcuab los tsim kom muaj lub teeb pom kev zoo ntawm cov dej oligomers, uas qhib txoj hauv kev tshiab rau kev npaj ntawm Waterborne UV resin.

UV curable waterborne hyperbranched polyester (whpua) tau npaj los ntawm cov tshuaj tiv thaiv ntawm Hyperbranched Polyester nplua nuj nyob rau hauv hydroxyl pawg nrog succinic anhydride thiab ipdi-hea prepolymer, thiab thaum kawg neutralized nrog organic amine los ua ntsev.Cov txiaj ntsig tau pom tias lub teeb kho tus nqi ntawm cov resin yog ceev thiab lub cev muaj zog zoo.Nrog rau qhov nce ntawm cov ntsiab lus nyuaj, cov iav hloov pauv kub ntawm cov resin nce, lub hardness thiab tensile lub zog kuj nce, tab sis lub elongation ntawm tawg txo.Hyperbranched polyesters tau npaj los ntawm polyanhydrides thiab monofunctional epoxides.Glycidyl methacrylate tau qhia ntxiv rau cov tshuaj tiv thaiv nrog hydroxyl thiab carboxyl pawg ntawm hyperbranched polymers.Thaum kawg, triethylamine tau ntxiv rau neutralize thiab tsim cov ntsev kom tau UV curable waterborne hyperbranched polyesters.Cov txiaj ntsig tau pom tias ntau cov carboxyl pawg ntsiab lus nyob rau hauv qhov kawg ntawm cov dej-raws li hyperbranched resin, qhov zoo dua cov dej solubility;Qhov curing tus nqi ntawm cov resin nce nrog qhov nce ntawm cov davhlau ya nyob twg ob daim ntawv cog lus.

2 Organic-inorganic hybrid system

Waterborne UV teeb kho cov organic / inorganic hybrid system yog ib qho zoo sib xyaw ntawm Waterborne UV resin thiab cov ntaub ntawv inorganic.Qhov zoo ntawm cov ntaub ntawv inorganic xws li hnav tsis kam thiab huab cua tsis kam yog nkag mus rau hauv cov resin los txhim kho cov khoom zoo ntawm cov yeeb yaj kiab kho.Los ntawm kev qhia inorganic hais xws li nano-SiO2 los yog montmorillonite rau hauv UV curing system los ntawm txoj kev ncaj qha dispersion, sol-gel method los yog intercalation method, UV curing organic / inorganic hybrid system tuaj yeem npaj tau.Tsis tas li ntawd, organosilicon monomer tuaj yeem nkag mus rau hauv cov saw hlau molecular ntawm aqueous UV oligomer.

Organo / inorganic hybrid lotion (Si PUA) tau npaj los ntawm kev qhia cov pab pawg polysiloxane rau hauv cov ntu mos ntawm polyurethane nrog ob lub davhlau ya nyob twg hydroxybutyl polydimethylsiloxane (PDMS) thiab diluting nrog acrylic monomers.Tom qab kho, cov xim zaj duab xis muaj lub cev zoo, kev sib cuag lub kaum ntse ntse thiab dej tsis kam.Hyperbranched hybrid polyurethane thiab lub teeb kho hyperbranched polyurethane tau npaj los ntawm tus kheej ua polyhydroxy hyperbranched polyurethane, succinic anhydride, silane coupling agent KH560, glycidyl methacrylate (GMA) thiab hydroxyethyl methacrylate.Tom qab ntawd, Si02 / Ti02 organic-inorganic hybrid sol ntawm lub teeb kho hyperbranched polyurethane tau npaj los ntawm kev sib xyaw thiab hydrolyzing nrog tetraethyl orthosilicate thiab n-butyl titanate nyob rau hauv sib txawv proportions.Cov txiaj ntsig tau pom tias nrog kev nce ntawm cov ntsiab lus inorganic, lub pendulum hardness ntawm hybrid txheej nce thiab qhov roughness ntawm qhov chaw nce.Qhov zoo ntawm SiO2 hybrid txheej yog zoo dua li Ti02 hybrid txheej.

3 dual curing system

Txhawm rau daws qhov tsis txaus ntawm peb-seem curing ntawm Waterborne UV resin thiab kho cov txheej txheej tuab thiab cov xim xim, thiab txhim kho cov khoom zoo ntawm cov yeeb yaj kiab, cov kws tshawb fawb tau tsim kho dual curing system sib txuas lub teeb kho nrog lwm cov txheej txheem kho.Tam sim no, lub teeb curing, thermal curing, lub teeb curing / redox curing, dawb radical lub teeb curing / cationic lub teeb curing thiab lub teeb curing / ntub curing yog ntau dual curing systems, thiab qee lub tshuab tau siv.Piv txwv li, UV hluav taws xob tiv thaiv nplaum yog ob txoj kev kho ntawm lub teeb curing / redox los yog lub teeb curing / ntub curing.

Cov kev ua haujlwm monomer ethyl acetoacetate methacrylate (amme) tau nkag mus rau hauv cov tshuaj pleev xim polyacrylic acid, thiab cov pab pawg kho lub teeb tau qhia los ntawm Michael ntxiv cov tshuaj tiv thaiv ntawm qhov kub thiab txias los ua kom cov cua sov curing / uv curing waterborne polyacrylate.Qhuav ntawm qhov kub tsis tu ncua ntawm 60 ° C, 2 x 5 Nyob rau hauv cov xwm txheej ntawm 6 kW high-pressure mercury teeb irradiation, lub hardness ntawm resin tom qab tsim zaj duab xis yog 3h, cawv kuj yog 158 zaug, thiab alkali tsis kam yog 24. teev.

4 epoxy acrylate / polyurethane acrylate composite system

Epoxy acrylate txheej muaj qhov zoo ntawm qhov tawv tawv, zoo adhesion, siab gloss thiab zoo tshuaj tiv thaiv, tab sis nws muaj qhov tsis yooj yim thiab brittleness.Waterborne polyurethane acrylate muaj cov yam ntxwv ntawm kev hnav tsis kam thiab yoog raws, tab sis huab cua tsis zoo.Siv cov tshuaj hloov kho, kev sib xyaw ntawm lub cev lossis kev sib xyaw ua ke kom ua tau zoo ntawm ob lub resins tuaj yeem txhim kho kev ua haujlwm ntawm ib qho cob thiab muab kev ua si tag nrho rau lawv qhov zoo, thiaj li tsim kom muaj kev ua haujlwm siab UV kho nrog ob qho zoo.

5 macromolecular lossis polymerizable photoinitiator

Feem ntau photoinitiators yog aryl alkyl ketone me me molecules, uas tsis tuaj yeem decomposed tag nrho tom qab lub teeb kho.Cov khoom seem me me lossis cov khoom siv photolysis yuav txav mus rau cov txheej txheej, ua rau yellowing lossis tsw, uas yuav cuam tshuam rau kev ua haujlwm thiab kev siv cov yeeb yaj kiab kho.Los ntawm kev qhia photoinitiators, acryloyl pawg thiab hydrophilic pawg rau hauv cov polymers hyperbranched, cov kws tshawb fawb tau tsim cov dej macromolecular polymerizable photoinitiators kom kov yeej qhov tsis zoo ntawm cov duab me me molecular photoinitiators.