纳米SiO2/Al2O3复合改性对环氧树脂绝缘性能的影响  

Effect of Nano-SiO2/Al2O3 on the Insulation Properties of Epoxy Resin

作　　者：程显[1,2] 李文博 陈硕[1,2] 杨征 韩书谟[3] 葛国伟 Xian Cheng;Wenbo Li;Shuo Chen;Zheng Yang;Shumo Han;Guowei Ge(School of Electrical Engineering,Zhengzhou University,Zhengzhou 450001,China;Henan Engineering Research Center of Power Transmission&Distribution Equipment and ElectricalInsulation,Zhengzhou 450001,China;Pinggao Group Co.,Ltd.,Pingdingshan 467000,China)

机构地区：[1]郑州大学电气工程学院,河南郑州450001 [2]河南省输配电装备与电气绝缘工程技术研究中心,河南郑州450001 [3]平高集团有限公司,河南平顶山467000

出　　处：《高分子材料科学与工程》2020年第11期86-92,共7页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51977195,51777025);中国博士后科学基金项目(2017M622370)。

摘　　要：以双酚A型环氧树脂E51为基体,纳米SiO2/Al2O3为辅助填料,采用低温等离子体协同偶联剂对纳米填料进行接枝处理,控制低温等离子体处理时间,制备出纳米SiO2/Al2O3/E51三元复合绝缘材料,研究纳米填料对环氧树脂复合材料介电性能、闪络电压、热分解温度及击穿强度等的影响。结果表明,纳米SiO2填充量为3%,纳米Al2O3填充量为1.5%,并且采用偶联剂协同低温等离子体的处理时间为30 s时,复合试样各项电气性能均得到显著提升。初始分解温度较未改性时提高22℃;闪络电压较未改性时提高20.9%;击穿强度较未改性时提高23.1%。这一结果为提高环氧树脂电气性能提供了新的研究思路。The bisphenol A epoxy resin(E51)was used as matrix,and the nano-SiO2/Al2O3 was used as filler,which was grafted with low-temperature plasma synergistic coupling agent,and nano-SiO2/Al2O3/E51 ternary composite insulation materials were prepared by controlling the low-temperature plasma treatment time.The microstructure and properties of the modified samples were microscopically characterized by FT-IR and TGA.The results show thatthe electrical properties of the composite samples are significantly improved when the nano-SiO2 loading is 3%,the nano-Al2O3 loading is 1.5%,and the coupling agent combined with low temperature plasma treatment time is 30 s.Compared with the unmodified,the initial decomposition temperature,flashover voltage and breakdown strength are increased by 22℃,20.9%,23.1%respectively.This result provides a new research idea for improving the electrical properties of epoxy resin.

关 键 词：环氧树脂 纳米SIO2 纳米AL2O3 低温等离子体 闪络电压 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]