聚氨酯改性环氧耐低温胶粘剂研究  

Study on low temperature-resistant epoxy adhesive modified by polyurethane

作　　者：李翠影[1] 古忠云[1] 廖宏[1] Li Cuiying;Gu Zhongyun;Liao Hong(Institute of Chemical Materials,CAEP,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院化工材料研究所,四川绵阳621900

出　　处：《中国胶粘剂》2018年第11期24-27,45,共5页China Adhesives

摘　　要：采用聚氨酯改性环氧树脂的方法,制备了适合低温环境使用的环氧树脂低温结构胶粘剂;通过扫描电镜与动态力学性能分析,证明了加入聚氨酯能够显著改善环氧树脂的低温韧性,有效避免环氧树脂低温开裂现象。研究结果表明:当w(聚氨酯)=10%(相对于环氧树脂质量而言)时,环氧树脂具有良好的低温力学性能。Low temperature-resistant epoxy adhesive was prepared by adopting polyurethane to modify epoxy resin. Improved toughness was confirmed through scan electron microscope（SEM） and dynamic mechanical analysis（DMA）,so cracking could be avoided in low temperature. The research results showed that when the mass fraction of polyurethane was 10%,the epoxy resin had good low-temperature mechanical properties.

关 键 词：环氧树脂 胶粘剂 聚氨酯改性 低温 

分 类 号：TQ433.43[化学工程]