UV固化涂料用聚氨酯丙烯酸酯的合成及性能  

Synthesis and Properties Study of Polyurethane Acrylate for UV Curable Coating

作　　者：李会录[1] 邵康宸[1] 韩江凌[1] 樊淑兰 魏弘利[1] 

机构地区：[1]西安科技大学材料科学与工程学院,西安710054 [2]重庆科聚孚工程塑料有限责任公司,重庆401332

出　　处：《绝缘材料》2014年第4期21-25,共5页Insulating Materials

基　　金：国家自然科学基金项目(21204072)

摘　　要：以甲苯二异氰酸酯(TDI)、聚氧化丙烯三醇、甲基丙烯酸羟乙酯(HEMA)为主要单体合成了聚氨酯丙烯酸酯(PUA)低聚物,并通过对PUA低聚物异氰酸根含量的测定,分子结构、分子量大小及其分布的表征,分析了单体配比、反应温度、催化剂含量、原料中水分及稀释剂含量等对合成低聚物性能的影响。结果表明:当催化剂二月桂酸二丁基锡的质量分数为0.3%,稀释剂1,6-己二醇二丙烯酸酯(HDDA)的质量分数为20%,n(TDI)∶n(聚氧化丙烯三醇)∶n(HEMA)=3.08∶1∶3时,可以合成色相好、分子量大小及其分布合理的聚氨酯丙烯酸酯低聚物;以该聚氨酯丙烯酸酯制得的UV固化涂料的综合性能优良。A polyurethane acrylate（PUA） oligomer was synthesized from toluene diisocyanate（TDI）, poly-oxypropylene triol and hydroethyl methacrylate（HEMA）, and its -NCO content, molecular structure, and molecular weight and distribution were measured. The effect of the ratio of monomers, reaction tempera-ture, catalyst, and moisture and diluent in the raw materials on the properties of the PUA was studied. The results show that when the mass fraction of dibutyltin dilaurate catalyst is 0.3%, the mass fraction of diluent 1,6-hexanediol diacrylate（HDDA） is 20%, n（TDI）∶n（polyoxypropylene triol）∶n（HEMA）=3.08∶1∶3, the synthesized polyurethane acrylate has good hue and reasonable molecular weight and distribution. The UV curable coating prepared by the polyurethane acrylate has excellent comprehensive properties.

关 键 词：甲苯二异氰酸酯 聚氧化丙烯三醇 甲基丙烯酸羟乙酯 UV固化涂料 聚氨酯丙烯酸酯 

分 类 号：TQ637.83[化学工程—精细化工] TQ323.8