复合绝缘子用胶装剂性能优化研究
2021-07-22司晓闯齐小乔王彩君陈蕊
司晓闯 齐小乔 王彩君 陈蕊



摘 要:对复合绝缘子法兰用胶装剂的配方进行了优化调整,测定了调整后胶装剂配方的凝胶时间、玻璃化转变温度、力学性能和击穿电压等参数,并与在用的胶装剂配方进行了对比,进行了样机破坏负荷试验。结果表明:以甲基纳迪克酸酐为固化剂,新加入LD-410增韧剂,拉伸强度提高了9.2 MPa,弯曲强度提高了22.5 MPa,冲击强度提高了0.9 kJ/m2,击穿强度提高了3 kV/mm,复合绝缘子样机通过了破坏负荷试验验证,满足使用要求。
关键词:环氧树脂;胶装剂;复合绝缘子
中图分类号:TM215.1 文献标识码:A 文章编号:1003-5168(2021)08-0129-03
Study on Performance Optimization of Epoxy Resin Binder
for Composite Insulator
SI Xiaochuang1 QI Xiaoqiao2 WANG Caijun3 CHEN Rui1
(1.Pinggao Group Co., Ltd.,Pingdingshan Henan 467001;2.Henan Pinggao General Electric Co., Ltd.,Pingdingshan Henan 467001;3. Henan Pinggao Electric Co.Ltd.,Pingdingshan Henan 467001)
Abstract: The formulation of the glue for the composite insulator flange was optimized and adjusted. The gelation time, glass transition temperature, mechanical properties and breakdown voltage of the binder were determined. The parameters were compared with those of the binder used in the composite insulator, and the failure load test of the prototype was verified. The results show that the tensile strength is increased by 9.2 MPa, bending strength is increased by 22.5 MPa, impact strength is increased by 0.9 kJ/m2, breakdown strength is increased by 3 kV/mm, and the composite insulation sub sample machine has passed the test verification of failure load, which meets the requirements of application.
Keywords: epoxy resin;binder;composite insulator
復合绝缘子作为高压电气行业中必备的绝缘部件,被广泛应用于地理信息系统(Geographic Information System,GIS)、罐式断路器、输电线路、变电站中。复合绝缘子自身具有良好的憎水性和憎水迁移性,使得其抗污闪能力强,同时,其还具有不检零、不清扫、重量轻、运输安装方便等诸多优点[1]。近年来,随着电力产业的蓬勃发展,复合绝缘子在电力行业中的应用越来越多。在结构上,复合绝缘子主要由硅橡胶伞裙护套、玻璃纤维缠绕管(芯棒)和端部金属附件组成。复合绝缘子在使用过程中,端部金属附件起到连接和传递载荷的作用。在生产过程中,一个重要的工艺环节是端部金属附件与玻璃纤维缠绕管(芯棒)的粘接,即法兰的胶装。将胶装剂注入端部金属附件与玻璃纤维管(芯棒)的间隙内,加热固化,形成三维交联结构的固化物,把两者结合成一个整体[2]。端部金属附件与玻璃纤维缠绕管(芯棒)之间的最终粘接效果将严重影响绝缘子的使用寿命。……
