摘要
采用改进Hummers法制备氧化石墨烯(GO),再通过偶联剂KH570与GO反应得到改性氧化石墨烯(MGO)并制备MGO/环氧树脂复合材料。利用红外光谱(FTIR)、热重分析(TGA)和X射线衍射仪(XRD)分析其改性效果,利用扫描电镜观察MGO/环氧树脂复合材料冲击断面的形貌。结果表明:MGO及其复合材料的热稳定性显著提高;当MGO质量分数为0.050%时,复合材料的冲击强度、拉伸强度、断裂伸长率和拉伸模量分别提高了89.84%,104.32%,118.89%和14.46%,而复合材料的吸水率达到最低值0.375%。
Graphene oxide （GO） was prepared by the improved Hummers method, then GO was modified by KH570 to obtain modified graphene oxide （MGO）.MGO/ep-oxy composites with different MGO content were prepared.The properties of MGO/ep-oxy were studied by FTIR,TGA and XRD,respectively.The morphology of the impact fracture surface of the composites was characterized by means of scanning electron mi-croscopy.The results show that the thermal stability of MGO and MGO/epoxy is signifi-cantly improved.And the impact strength,tensile strength,elongation at break and the tensile modulus of the composites increase by 89.84%,104.32%,1 18.89% and 14.46%respectively .But wetar absorption rate of the composites reaches the lowest value 0.375%,when the mass fraction of MGO is 0.050%.
出处
《现代塑料加工应用》
CAS
北大核心
2015年第5期44-48,共5页
Modern Plastics Processing and Applications
基金
江苏科技大学研究生创新基金(YCX11S-24)
江苏省产学研联合创新资金(BY2013066-12)
关键词
氧化石墨烯
表面改性
环氧树脂
力学性能吸水率
graphene oxide
surface modification
epoxy resin
mechanical properties
water absorption rate
