CAJ | 학술논문

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。
이갑분이이청산지（TDI)、취양화병희삼순、갑기병희산간을지(HEMA)위주요단체합성료취안지병희산지(PUA)저취물，병통과대PUA저취물이청산근함량적측정，분자결구、분자량대소급기분포적표정，분석료단체배비、반응온도、최화제함량、원료중수분급희석제함량등대합성저취물성능적영향。결과표명：당최화제이월계산이정기석적질량분수위0.3%，희석제1,6-기이순이병희산지(HDDA)적질량분수위20%，n(TDI)∶n(취양화병희삼순)∶n(HEMA)=3.08∶1∶3시，가이합성색상호、분자량대소급기분포합리적취안지병희산지저취물；이해취안지병희산지제득적UV고화도료적종합성능우량。
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.