摘要
通过插层剂辅助超声剥离水滑石,获得剥离充分的LDHNSs分散液;采用原位聚合的方法制备PI/LDHNSs复合薄膜,并对该类复合材料的电学性能进行深入研究。结果表明:LDHNSs在PI基体中分散均匀,未出现明显的团聚和堆叠现象,与基体之间展现出比较好的界面相容性。相较于纯PI薄膜,LDHNSs的加入使复合薄膜的体积电阻率和电气强度出现一定程度的降低;但值得注意的是,复合薄膜的耐电晕寿命明显得到提升;当LDHNSs质量分数为0.5%时,复合薄膜的耐电晕寿命最长,约为纯PI薄膜的8倍,实现了在较低添加量下对复合薄膜耐电晕性能的最大提升。
LDHNSs dispersion was obtained by ultrasonic stripping of hydrotalcite assisted with intercalation agent.PI/LDHNSS composite films were prepared by in-situ polymerization,and their electrical properties were studied.The results show that the LDHNSs disperse uniformly in PI matrix without obvious agglomeration and stacking,which show good interfacial compatibility with the matrix.Compared with pure PI film,the volume resistivity and electric strength of the composite films decrease slightly to some extent with the addition of LDHNSs.However,it should be note that the corona resistance life of the composite film is improved significantly.When the mass fraction of LDHNSs is 0.5%,the corona resistance life of the composite film is the longest,which is about 8 times longer than that of pure PI,realizing the maximum improvement of corona resistance performance for composite at a relatively low addition amount.
作者
刘会
马莉莉
郭海泉
郝春成
张洪
LIU Hui;MA Lili;GUO Haiquan;HAO Chuncheng;ZHANG Hong(College of Material Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;State Key Laboratory of New Energy Power System,North China Electric Power University,Beijing 102206,China;Polymer Composites Engineering Laboratory,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China)
出处
《绝缘材料》
CAS
北大核心
2021年第11期130-133,共4页
Insulating Materials
基金
新能源电力系统国家重点实验室开放课题(LAPS21022)。
关键词
聚酰亚胺
二维纳米材料
水滑石
耐电晕
polyimides
two-dimension nano materials
hydrotalcite
corona resistance
