功能化氧化石墨烯/聚氨酯-环氧树脂复合材料的制备及其性能  

Preparation and Properties of Functionalized Graphene Oxide/Polyurethane-epoxy Composites

作　　者：张明飞 魏婷[1] 易红玲[1] 郑柏存[1] ZHANG Mingfei;WEI Ting;YI Hongling;ZHENG Baicun(East China University of Science and Technology,Sport Material R&D Lab,Shanghai 200237,China)

机构地区：[1]华东理工大学体育运动材料研究所

出　　处：《材料科学与工程学报》2019年第6期967-972,1029,共7页Journal of Materials Science and Engineering

基　　金：国家自然科学青年基金资助项目(21506064);相变石膏板强度体系控制及在建筑内墙中的节能评价资助项目(2017M611477)

摘　　要：利用氧化石墨烯(GO)表面的羟基分别与硅烷偶联剂KH550、KH560反应,制备功能化氧化石墨烯(KH550-GO、KH560-GO),分析了GO功能化前后的微观结构变化;通过溶液插层法将GO加入到聚氨酯-环氧树脂(PU-EP)基体树脂中制备GO/PU-EP复合材料,并对其拉伸性能及热性能进行测试。研究结果表明,KH550、KH560成功对GO进行了功能化,并且与PU-EP复合材料相比,GO/PU-EP复合材料的拉伸性能和热性能均有明显的提高。其中,KH550-GO的加入对基体树脂力学性能和热性能的改善尤为明显。添加0.1wt%的KH550-GO,基体树脂拉伸强度和拉伸模量分别提高了39.0%和94.4%,同时初始热分解温度提高了12℃。Two types of functionalized graphene oxide(KH550-GO,KH560-GO)were prepared via the reaction between the hydroxyl on the surface of GO and KH550,KH560.PU-EP composites filled with GO were prepared by a solution intercalation method,and the tensile and thermal properties of the GO/PU-EP composites were studied.The experimental results show that KH550-GO and KH560-GO are prepared successfully.The tensile and thermal properties of the GO/PU-EP composites are significantly improved compared with PU-EP composite.With the addition of 0.1 wt%KH550-GO,the composite shows better improvement in tensile strength and modulus,with 39.0%and 94.4%increments,respectively.Meanwhile,the initial thermal decomposition temperature increases by 12℃.

关 键 词：氧化石墨烯 功能化 聚氨酯-环氧树脂 拉伸性能 热性能 

分 类 号：TB332[一般工业技术—材料科学与工程]