摘要
采用间位芳纶树脂对聚酯亚胺绝缘漆进行改性,制得了一种牵引电机用耐高温绝缘漆。研究了间位芳纶树脂对绝缘涂层附着力、电气性能、阻燃性能和耐热性能的影响。结果表明:当间位芳纶树脂用量为15%时,绝缘涂层的电气强度达65 kV/mm,附着力达12.9 MPa,氧指数可达28.7%,在220℃下经500 h耐高温试验后漆膜无开裂脱落,仅轻微变色,可满足牵引电机的使用要求。
A high temperature resistant insulating varnish for traction motors was prepared by modifying polyester imide insulating varnish with meta-aramid resin.The effects of meta-aramid resin on the adhesion,electrical properties,flame retardancy,and heat resistance of the insulating coating were studied.The results show that when the content of meta-aramid resin is 15%,the electrical strength,the adhesion,the oxygen index of the insulating coating reaches 65 kV/mm,12.9 MPa,28.7%,respectively.After high temperature test at 220℃for 500 h,the paint film shows slight discoloration without cracking and peeling off,which can meet the requirements of the traction motors.
作者
刘含茂
曾凡辉
贾金荣
吕保杰
LIU Hanmao;ZENG Fanhui;JIA Jinrong;LÜ Baojie(Zhuzhou Times New Material Technology Co.,Ltd.,Zhuzhou 412007,China)
出处
《绝缘材料》
CAS
北大核心
2021年第7期43-46,共4页
Insulating Materials
关键词
牵引电机
芳纶树脂
阻燃性能
耐高温绝缘漆
traction motor
meta-aramid resin
flame retardancy
high temperature resistant insulating varnish