大型电机用耐电痕化环氧玻璃布层压板的制备与性能  

Preparation and properties of epoxy resin based glass cloth laminates with high CTI for large generator

作　　者：何伟韩 谢志辉 程圣 杨光 张跃 苏振 王汉武 冉起超[2] HE Weihan;XIE Zhihui;CHENG Sheng;YANG Guang;ZHANG Yue;SU Zhen;WANG Hanwu;RAN Qichao(Dongfang Electric Machinary Co.,Ltd.,Deyang 618000,China;College of Polymer Science and Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]东方电气集团东方电机有限公司,四川德阳618000 [2]四川大学高分子科学与工程学院,四川成都610065

出　　处：《绝缘材料》2023年第6期23-27,共5页Insulating Materials

摘　　要：本研究开发了一种高耐热环氧基体树脂并以玻璃布为增强材料,通过高温热压工艺制备了玻璃布层压板,对基体树脂及其固化物,以及层压板的性能进行了分析。结果表明:该环氧基体树脂固化物具有较高的耐热性和良好的力学性能,其玻璃化转变温度高达201℃,5%热失重温度达到367℃;其拉伸强度与弯曲强度分别为76 MPa与82 MPa。制备的层压板具有良好的综合性能,拉伸强度为411 MPa,压缩强度为480 MPa,冲击强度达到226 kJ/m^(2),室温与180℃下的弯曲强度分别为633 MPa与416 MPa,相比电痕化指数(CTI)可达到550。A kind of epoxy resin matrix with high heat resistance was developed,and glass cloth laminates was prepared by high temperature hot-poressing technology using glass cloth as reinforce material.The properties of the matrix resin,cured resin,and the laminates were analyzed.The results show that this cured resin has high heat resistance and good mechanical properties,its glass transition temperature reaches up to 201℃,and the 5%weight loss temperature is 367℃;its tensile strength and flexural strength reaches to 76 MPa and 82 MPa,respectively.The glass cloth reinforced laminates show comprehensive performance,the tensile strength,compression strength,and impacting strength of the laminates is 411 MPa,480 MPa,and 226 kJ/m^(2),respectively.The flexural strength at room temperature and 180℃is 633 MPa and 416 MPa,respectively.Moreover,the tracking index(CTI)of the laminates can reach to 550.

关 键 词：绝缘材料 相比电痕化指数 玻璃布板 

分 类 号：TM215[一般工业技术—材料科学与工程]