耐高温丙烯酸酯类聚氨酯材料的制备与性能研究  

Preparation and Properties of Poly(urethane–methacrylate) Materials with High Temperature Resistance

作　　者：周立明[1] 杨彩霞[1] 高丽君[1] 方少明[1] 商爱莲 

机构地区：[1]郑州轻工业学院,河南省表界面科学重点实验室,郑州450002

出　　处：《工程塑料应用》2014年第7期21-24,共4页Engineering Plastics Application

基　　金：国家自然科学基金项目(21271159);河南省基础与前沿技术研究项目(112300410143,132300410182);郑州轻工业学院博士基金项目(2011BSJJ003)

摘　　要：以不同物质的量之比的1,3-丁二醇和邻苯二甲酸酐(PA)合成了苯酐聚酯二元醇,然后用傅立叶变换红外光谱(FTIR)、核磁共振氢谱(1H–NMR)对自制的苯酐聚酯二元醇进行了表征,结果表明1,3-丁二醇和PA反应完全,两者合成的产物与预期结构相符。用自制的苯酐聚酯二元醇、甲基丙烯酸-β-羟乙酯、异佛尔酮-二异氰酸酯制备了耐高温丙烯酸酯类聚氨酯(PUR)材料。用热重(TG)、动态热机械分析(DMA)等方法对制备的丙烯酸酯类PUR材料热稳定性和耐热性能进行了研究。结果表明,制备的丙烯酸酯类PUR材料的热分解温度均在230℃以上,其储能模量、损耗模量、玻璃化转变温度(Tg)均比由聚丙二元醇400(PPG 400)制得的丙烯酸酯类PUR高;随着苯酐聚酯二元醇中PA含量的增加,合成的丙烯酸酯类PUR的Tg有所降低。当1,3-丁二醇与PA物质的量之比为2∶1时,制备的耐高温丙烯酸酯类PUR的Tg比由PPG 400制备的PUR高30℃以上。A series of polyester polyols were synthesized by using 1,3-butanediol and phthalic anhydride （PA） with different molar ratios. The structures of the polyester polyols were investigated by tH-NMR and FTIR. The results show that the the structures of the synthetical products are consistent with the expected structure of polyester polyols. Then the poly（urethane-methacrylate） materials with high temperature resistance were successfully prepared by 2-hydroxyethyl methacrylate, isophorone diisocyanate and the obtained polyester polyols. The properties of the prepared materials were confirmed by dynamic mechanical analysis and thermogravimetric analysis. The results show that the thermal decomposition temperatures of the prepared materials are all above 230℃. Furthermore, the storage modulus, loss modulus and glass transition temperature （Tg） of the prepared materials are higher than those of the poly（urethane-methacrylate） materials prepared with PPG 400. Tg of the material prepared with the polyester polyols is decreased slightly with the increase of PA content in polyester polyols. When the molar ratio of the 1,3-butanediol and PA is 2 ： 1, Tg of the material prepared with the polyester polyols is higher about 30℃ than that of the materials prepared with PPG 400.

关 键 词：聚酯二元醇 丙烯酸酯类聚氨酯 耐高温性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]