通过引入柔性环氧封端聚醚(ETPE)单体,报道了一种温和且高效制备新型高冲击韧性的乙烯基酯树脂(EVER-2)的方法.用傅里叶变换红外光谱(FTIR)、核磁共振氢谱(1H NMR)和碳谱(13C NMR)等技术手段对其结构进行了表征,并对其拉伸强度、弯曲强度和冲击韧性等力学性能和热变形温度进行了测试.结果表明,只需少量的ETPE参与反应(约占树脂总质量的7.9％),EVER-2固化产物就具有很高的冲击韧性.其SEM的冲击断面形貌表明,新型高冲击韧性乙烯基酯树脂为均相结构,其与玻璃纤维有很好的粘结能力.提出了EVER-2及其与玻璃纤维复合材料EVERL-2可能的增韧机理.
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