Njikọ nke UV Curable Waterborne Polyurethane Acrylate mkpuchi

Nkọwa dị mkpirikpi:

Ihe mkpuchi Uv-wpua mejupụtara oligomer, photoinitiator, diluent na-arụ ọrụ, wdg. Oligomer bụ ihe kachasị mkpa na mkpuchi uv-wpua.Ọdịdị ya na-ekpebi ihe ndị bụ isi nke ihe nkiri UV na-agwọ ọrịa, dị ka isi ike, mgbanwe, iyi nguzogide, mmiri na-eguzogide na corrosion iguzogide.Photoinitiator bụ akụkụ dị mkpa nke usoro ọgwụgwọ UV, nke na-arụ ọrụ dị mkpa na uche nke usoro ọgwụgwọ UV ma na-emetụtakwa arụmọrụ ikpeazụ nke ihe nkiri a gwọrọ.Uv-wpua mkpuchi na-eji mmiri dị ka ihe na-arụsi ọrụ ike, nke na-ebelata nke ukwuu iji ihe mgbaze organic.

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Synthesis nke Waterborne Polyurethane Acrylate

Oligomer na mkpuchi uv-wpua bụ wpua, nke bụ akụkụ bụ isi nke mkpuchi ahụ.A na-etolite Wpua site na mmeghachi omume nke polyisocyanate, diol na hydroxyl acrylate.Isocyanates gụnyere aromatic isocyanates, aliphatic isocyanates na alicyclic isocyanates, nke na-emetụta nkwụsi ike, nguzogide ihu igwe na nguzogide odo nke wpua.Diols tumadi gụnyere polyether diols na polyester diols, nke na-emetụta ike tensile, ịdị nro, nguzogide okpomọkụ na nguzogide hydrolysis nke wpua.
Otu - NCO dị na polyisocyanate na-emeghachi omume na ìgwè hydroxyl nke diol iji mepụta oligomer na otu isocyanate na nsọtụ abụọ ahụ.2. A na-eji 2,2-dihydroxymethylpropionic acid (DMPA) mee ihe dị ka diol iji webata ìgwè hydrophilic n'ime oligomer, na 1,4-butanediol (BDO) na-agbakwunye maka ndọtị agbụ;3. Hydroxyethyl acrylate (HEA) e ji ewebata foto nọ n'ọrụ otu nwere unsaturated abụọ agbụ maka UV ọgwụgwọ.Mgbe emechara mmeghachi omume nke nzọụkwụ atọ, a na-agbakwunye triethanolamine (teoa) maka mmeghachi omume neutralization, n'ikpeazụkwa, a na-agbakwunye mmiri iji mee ka ọ bụrụ ude mmiri.
Ndị ọkà mmụta ndị ọzọ ewepụtala uv-wpua na arụmọrụ dị mma site na iji akụrụngwa sịntetik dị ka Polyhexylene glycol, isophorone diisocyanate, PETA, na dimethylbutyric acid (DMBA).A na-emepụta ụdị wpua atọ site na polyacrylate a kwadebere ya na otu carboxyl dị n'akụkụ, polyether polyol, isophorone diisocyanate na hydroxyethyl acrylate.Mgbe nyocha zuru oke nke nyocha anụ ahụ na nyocha ngwa, a na-ewere na arụmọrụ zuru oke nke polyether wpua ka mma.Iji toluene diisocyanate, polyhexanediol, 2,2-dihydroxymethylpropionic acid na hydroxyethyl methacrylate dị ka akụrụngwa, prepolymer e mbụ synthesized, mgbe ahụ triethylamine e kwukwara dị ka neutralizing gị n'ụlọnga, na mmiri na-eji dị ka yinye extender agbasa na mmiri na-etolite kwụsiri ike wpua ude mmiri.