柔性环氧丙烯酸酯的合成及UV固化性能  

Synthesis and UV curing performance of flexible epoxy acrylates

作　　者：高景瑞 谢晖 黄莉 GAO Jingrui;XIE Hui;HUANG Li(College of Chemical Engineering, Nanjing Tech University, Nanjing 211800, China)

机构地区：[1]南京工业大学化工学院,江苏南京211800

出　　处：《南京工业大学学报（自然科学版）》2022年第1期45-50,67,共7页Journal of Nanjing Tech University(Natural Science Edition)

摘　　要：为提高环氧丙烯酸酯的柔韧性,选用衣康酸(IA)和甲基丙烯酸羟乙酯(HEMA)反应生成含有羧基的单酯基,然后分别与环氧大豆油和环氧树脂进行环氧开环反应。当反应温度为110℃,反应时间为2 h,环氧基与羧基的摩尔比为1.15∶1,催化剂三苯基膦(TPP)的质量分数为1.5%,阻聚剂对羟基苯甲醚(MEHQ)的质量分数为0.2%时,合成产物性能最佳。并采用核磁共振氢谱仪(^(1)H NMR)、傅里叶红外光谱仪(FTIR)对产物结构进行表征,表明成功制备出环氧大豆油衣康酸甲基丙烯酸羟乙酯(IESO)。实验合成产物(柔性环氧丙烯酸酯)与IESO、纯环氧大豆油丙烯酸酯(AESO)相比,铅笔硬度更大、柔韧性更佳,而吸水率降低,热稳定性能也有较大提高。In order to improve the flexibility of epoxy acrylate,itaconic acid(IA)and hydroxyethyl methacrylate(HEMA)were selected to form a carboxyl-containing monoester group,which was then epoxy ring-opening reacted with epoxy soybean oil and epoxy resin.When the temperature of 110℃,the reaction time of 2 h,the molar ratio of epoxy group to carboxyl group of 1.15∶1,the mass fraction of triphenylphosphine(TPP)catalyst of 1.5%,the mass fraction of p-hydroxyanisole(MEHQ)polymerization inhibitor of 0.2%,the performance of the synthesized product was the best.The structure of the product was characterized by proton nuclear magnetic resonance spectrometer(^(1)H NMR)and Fourier infrared spectrometer(FT-IR),and epoxy soybean oil itaconic acid hydroxyethyl methacrylate(IESO)was successfully prepared.The synthesized product in this experiment had better performance than IESO and pure epoxy soybear oil acrylate(AESO).The pencil hardness and flexibility of flexible epoxy acrylate was better,while the water absorption rate showed a decreasing trend,and the thermal stability performance was also greatly improved.

关 键 词：衣康酸 甲基丙烯酸羟乙酯 IESO AESO 紫外光(UV)固化 柔韧性 环氧丙烯酸酯 

分 类 号：TQ630[化学工程—精细化工]