Synthesis YeUV Inorapika Yemvura Polyurethane Acrylate Coatings

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Uv-wpua coating inoumbwa ne oligomer, photoinitiator, active diluent, etc. Oligomer ndiyo inonyanya kukosha muv-wpua coating.Chimiro chayo chinotaridza izvo zvakakosha zveUV kurapa firimu, sekuoma, kuchinjika, kupfeka kuramba, kusamira kwemvura uye kushomeka kwemarara.Photoinitiator chinhu chakakosha cheUV kurapa system, iyo inoita basa rakakosha mukunzwa kweUV yekurapa maitiro uye zvakare inokanganisa kuita kwekupedzisira kweyakarapwa firimu.Uv-wpua coating inoshandisa mvura seyakashanda diluent, iyo inoderedza zvakanyanya kushandiswa kweorganic solvents.

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Synthesis Of Waterborne Polyurethane Acrylate

Iyo oligomer muuv-wpua coating ndeye wpua, iyo ndiyo chikamu chikuru chekuputira.Wpua inowanzoumbwa nekuita kwe polyisocyanate, diol uye hydroxyl acrylate.Isocyanates inosanganisira anonhuwirira isocyanates, aliphatic isocyanates uye alicyclic isocyanates, izvo zvinokanganisa kusimba, kuramba mamiriro ekunze uye yellowing kuramba kwewpua.Madhiri anonyanya kusanganisira mapolyether diols uye mapolyester diol, ayo anokanganisa kusimba kwesimba, kupfava, kupisa kupisa uye hydrolysis kuramba kwewpua.
Iro - NCO boka mu polyisocyanate rinosangana neboka re hydroxyl re diol kuumba oligomer ine isocyanate mapoka kumativi ose maviri.2. 2,2-dihydroxymethylpropionic acid (DMPA) inoshandiswa se diol kuunza mapoka e-hydrophilic mu oligomer, uye 1,4-butanediol (BDO) inowedzerwa kuwedzera kweketani;3. Hydroxyethyl acrylate (HEA) yakashandiswa kuunza mapikicha anoshanda mapoka ane unsaturated kaviri zvisungo zveUV kurapa.Mushure mekuita nhanho nhatu kwapera, triethanolamine (teoa) inowedzerwa kune neutralization reaction, uye pakupedzisira mvura inowedzerwa kuti iite emulsify kuita lotion.
Dzimwe nyanzvi dzakagadzira uv-wpua nekushanda kwakanaka nekushandisa zvigadzirwa zvekugadzira zvakaita sePolyhexylene glycol, isophorone diisocyanate, PETA, uye dimethylbutyric acid (DMBA).Matatu emhando dzewpua akagadzirwa kubva kuakagadzirirwa polyacrylate necarboxyl boka mucheni yepadivi, polyether polyol, isophorone diisocyanate uye hydroxyethyl acrylate.Mushure mekuferefetwa kwakadzama kwekuyedzwa kwemuviri uye bvunzo yekushandisa, inofungidzirwa kuti yakazara kuita kwepolyether wpua kuri nani.Kushandisa toluene diisocyanate, polyhexanediol, 2,2-dihydroxymethylpropionic acid uye hydroxyethyl methacrylate seyakagadzirwa, prepolymer yakatanga kugadzirwa, ipapo triethylamine yakawedzerwa se neutralizing agent, uye mvura yakashandiswa seketani extender kupararira mumvura kuti iite wpua yakagadzikana.