Isku-dubaridka UV Biyo-dhalasho ee la daweyn karo

Isku-dubaridka UV-da-Biyaha-dhaliyaha ee Dahaarka Dahaarka ee Polyurethane Acrylate

Sharaxaad Gaaban:

Dahaarka Uv-wpua wuxuu ka kooban yahay oligomer, photoinitiator, diluent firfircoon, iwm. Oligomer waa qaybta ugu muhiimsan ee daahan uv-wpua.Qaab dhismeedkeedu wuxuu go'aamiyaa sifooyinka aasaasiga ah ee filimka daaweynta UV, sida qallafsanaanta, dabacsanaanta, caabbinta xirashada, caabbinta biyaha iyo iska caabinta daxalka.Photoinitiator waa qayb muhiim ah oo ka mid ah nidaamka daaweynta UV, kaas oo door muhiim ah ka ciyaara dareenka habka daaweynta UV iyo sidoo kale saameeya waxqabadka ugu dambeeya ee filimka la daaweeyay.Daahan Uv-wpua waxay isticmaashaa biyaha sida dareere firfircoon, taas oo aad u yaraynaysa isticmaalka dareerayaasha organic.

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Isku-dubarid ka samaysan Biyo-biyoodka Polyurethane Acrylate

Oligomer ee dahaarka uv-wpua waa wpua, taas oo ah qaybta ugu muhiimsan ee daahan.Wpua guud ahaan waxaa lagu sameeyay falcelinta polyisocyanate, diol iyo hydroxyl acrylate.Isocyanates waxaa ka mid ah isocyanates aromatic, aliphatic isocyanates iyo alicyclic isocyanates, kuwaas oo saameeya adkaanta, caabbinta cimilada iyo caabbinta jaalaha ah ee wpua.Diols inta badan waxaa ka mid ah diols polyether-ka iyo poliester diols, kuwaas oo saameeya xoogga jilicsanaanta, jilicsanaanta, caabbinta kulaylka iyo caabbinta hydrolysis ee wpua.
Kooxda NCO ee ku jirta polyisocyanate waxay la falgalaan kooxda hydroxyl ee diol si ay u sameeyaan oligomer oo leh kooxo isocyanate ah labada daraf.2. 2,2-dihydroxymethylpropionic acid (DMPA) ayaa loo isticmaalaa sida diol si loogu soo bandhigo kooxaha hydrophilic ee oligomer, iyo 1,4-butanediol (BDO) ayaa lagu daray kordhinta silsiladda;3. Hydroxyethyl acrylate (HEA) ayaa loo isticmaalay in lagu soo bandhigo kooxo firfircoon oo sawir leh oo ay ku jiraan bonds-ka labanlaaban ee aan dhergin ee daawaynta UV.Ka dib marka falcelinta saddex-tallaabo ah la dhammeeyo, triethanolamine (teoa) ayaa lagu daraa fal-celinta dhexdhexaadinta, ugu dambeyntiina waxaa lagu daraa biyo si ay ugu damiso lotion.
Culimo kale ayaa soo saaray uv-wpua oo leh waxqabad aad u wanaagsan iyaga oo isticmaalaya alaabada ceyriinka ah sida Polyhexylene glycol, isophorone diisocyanate, PETA, iyo dimethylbutyric acid (DMBA).Saddex nooc oo wpua ah ayaa laga soo saaray polyacrylate la diyaariyey oo leh kooxda carboxyl ee silsiladda dhinaca, polyether polyol, isophorone diisocyanate iyo hydroxyethyl acrylate.Kadib baaritaan dhamaystiran oo ku saabsan tijaabada jirka iyo tijaabada codsiga, waxaa loo arkaa in waxqabadka guud ee polyether wpua uu ka fiican yahay.Isticmaalka toluene diisocyanate, polyhexanediol, 2,2-dihydroxymethylpropionic acid iyo hydroxyethyl methacrylate sida alaabta ceeriin, prepolymer ayaa markii hore la farsameeyey, ka dibna triethylamine waxaa lagu daray wakiilka dhexdhexaad ah, iyo biyaha waxaa loo isticmaalay sida silsilad fidsan si ay ugu firdhiso biyaha si ay u sameeyaan kareem wpua deggan.