Synthesis ya UV Ikiza Amazi Polyurethane Acrylate Coatings Yerekanwe Ishusho

Synthesis ya UV Ikiza Amazi ya Polyurethane Acrylate Coatings

Ibisobanuro bigufi:

Uv-wpua itwikiriye igizwe na oligomer, fotoinitiator, ikora neza, nibindi. Oligomer nikintu cyingenzi mubice bya uv-wpua.Imiterere yacyo igena imiterere yibanze ya UV ikiza firime, nkubukomere, guhinduka, kwambara, kurwanya amazi no kurwanya ruswa.Photoinitiator nigice cyingenzi cya sisitemu yo gukiza UV, igira uruhare runini mukwiyumvisha uburyo bwo gukiza UV kandi ikagira ingaruka no kumikorere ya nyuma ya firime yakize.Uv-wpua ikingira ikoresha amazi nkimikorere ikora, igabanya cyane ikoreshwa ryimyunyu ngugu.

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Synthesis Yamazi ya Polyurethane Acrylate

Oligomer muri uv-wpua itwikiriye ni wpua, nigice cyingenzi cyo gutwikira.Wpua muri rusange ikorwa na reaction ya polyisocyanate, diol na hydroxyl acrylate.Isocyanates irimo isocyanates ya aromatic, isocyanates ya aliphatic na isocyanates ya alicyclic, bigira ingaruka ku gukomera, kurwanya ikirere no kurwanya umuhondo wa wpua.Diyose zirimo cyane cyane diol polyole na polyester diol, bigira ingaruka kumbaraga zingana, ubworoherane, kurwanya ubushyuhe hamwe na hydrolysis irwanya wpua.
Itsinda - NCO muri polyisocyanate ryitwara hamwe na hydroxyl groupe ya diol kugirango ikore oligomer hamwe nitsinda rya isocyanate kumpande zombi.2. 2,2-dihydroxymethylpropionic aside (DMPA) ikoreshwa nka diol kugirango yinjize amatsinda ya hydrophilique muri oligomer, naho 1,4-butanediol (BDO) yongerwaho kugirango yongere urunigi;3. Hydroxyethyl acrylate (HEA) yakoreshejwe mugutangiza amatsinda akora amafoto arimo imigozi ibiri idahagije kugirango UV ikire.Nyuma yintambwe eshatu zimaze kurangira, triethanolamine (teoa) yongewemo kugirango itabogamye, hanyuma amazi yongeweho kugirango ayisige amavuta yo kwisiga.
Abandi bahanga bashizemo uv-wpua nibikorwa byiza bakoresheje ibikoresho fatizo bya sintetike nka Polyhexylene glycol, isophorone diisocyanate, PETA, na aside dimethylbutyric (DMBA).Ubwoko butatu bwa wpua bwahujwe kuva polyacrylate yateguwe hamwe nitsinda rya carboxyl mumurongo wuruhande, polyether polyol, isophorone diisocyanate na hydroxyethyl acrylate.Nyuma yiperereza ryimbitse ryikizamini cyumubiri hamwe nikizamini cyo gusaba, hafatwa ko imikorere yuzuye ya polyether wpua ari nziza.Ukoresheje toluene diisocyanate, polyhexanediol, 2,2-dihydroxymethylpropionic aside na hydroxyethyl methacrylate nkibikoresho fatizo, prepolymer yabanje gushiramo, hanyuma triethylamine yongerwaho nkibikoresho bitagira aho bihurira, hanyuma amazi akoreshwa nk'umugozi wogukwirakwiza mumazi kugirango habeho amavuta yo kwisiga neza.