聚氨酯丙烯酸酯预聚物的合成和性能测试  

Synthesis and Performance of Polyurethane Acrylate Prepolymer

作　　者：张立颖[1] 吕虎[1] 孙禹[1,2] 李岳[1] 孙东洲[1,2] 孔宪志[1,2] 于国良[1,2] 

机构地区：[1]黑龙江省科学院石油化学研究院,黑龙江哈尔滨150040 [2]黑龙江省科学院高技术研究院,黑龙江哈尔滨150020

出　　处：《化学与粘合》2016年第2期123-126,共4页Chemistry and Adhesion

摘　　要：以甲苯二异氰酸酯(TDI)、聚醚二元醇(NJ-210)和甲基丙烯酸羟乙酯(HEMA)为原料分步反应合成了可光固化聚氨酯丙烯酸酯(PUA)预聚物。讨论了R值、反应时间、反应温度、催化剂用量和甲基丙烯酸羟乙酯(HEMA)用量对合成的PUA的影响,并用红外光谱(FT-IR)对预聚物结构进行了表征。结果表明:分步反应合成PUA预聚物时,第一步反应R值为2.2,反应时间1.5h;第二步反应温度为70℃,催化剂用量为0.3%,且HEMA用量为TDI的1.3(物质的量比)为最佳;用合成的PUA加入HEMA活性稀释剂,光引发剂和其他助剂配制成的紫外光固化胶黏剂固化速度适中、强度高。The UV-curable polyurethane acrylate （PUA） prepolymer was synthesized with toluene-2,4-diisocyanate （TDI）, polyether diols（NJ- 210） and hydroxyethyl methacrylate （HEMA） as raw materials. The effects of R value, time, temperature and content of catalyst and HEMA on the synthesis of PUA prepolymer were discussed, and the prepolymer structure was characterized by FI-IR. The experimental results showed that the PUA prepolymer was stepwise synthesized, in the first step the reaction time was 1.5h, the R value was 2.2; in the second step the reaction temperature was 70℃ the amount of catalyst and HEMA was 0.3% and 1.3 （mass ratio） of TDI respectively. The UV-curable adhesive which was synthesized with prepared PUA, HEMA reactive diluent, photoinitiator and other auxiliary agents, had a moderate curing rate and a high strength.

关 键 词：聚氨酯丙烯酸酯 预聚物 紫外光固化 

分 类 号：TQ433.438[化学工程]