水分侵入下复合绝缘横担FRP/RPUF界面的老化特性研究  

Study on ageing characteristics of FRP/RPUF interface of composite insulation cross-arm with water intrusion

作　　者：颜猛 李敏 张思刚 周哲[1] 张宇鹏 谢军[1] YAN Meng;LI Min;ZHANG Sigang;ZHOU Zhe;ZHANG Yupeng;XIE Jun(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Baoding 071003,China;State Grid Baoding Power Supply Company,Baoding 071066,China;State Grid Lanzhou Power Supply Company,Lanzhou 730050,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,河北保定071003 [2]国网保定供电公司,河北保定071066 [3]国网兰州供电公司,甘肃兰州730050

出　　处：《绝缘材料》2024年第6期54-62,共9页Insulating Materials

基　　金：国家自然科学基金资助项目(52007065);中央高校基本科研业务费专项资金资助项目(2022MS071)。

摘　　要：为研究水分侵入下复合绝缘横FRP/RPUF界面的老化特性,制备了FRP/RPUF界面试样,采用湿热老化方法加速水分在FRP/RPUF界面中的侵入与破坏进程;通过吸水率、剪切强度及泄漏电流测试结果,结合SEM、FTIR和TGA等表征技术,分析水分侵入下担FRP/RPUF界面的老化特性。结果表明:水分侵入会使FRP/RPUF界面受潮塑化,并使界面剪切强度降低、泄漏电流增大,但上述破坏作用会随着水分散失而减弱;水分还会使FRP/RPUF界面材料发生水解反应,造成局部缺陷,同时使杂质离子增多,进一步破坏界面的力学性能与电气性能。In order to investigate the ageing characteristics of the FRP/RPUF interface of composite insulation cross-arm under the effect of water intrusion,FRP/RPUF interface specimens were prepared,and water intrusion and destruction process in the FRP/RPUF interface was accelerated by hygrothermal ageing method.According to the test results of water absorption,shear strength,and leakage current,the ageing characteristics of the FRP/RPUF interface under water intrusion were obtained by combining with SEM,FTIR,and TGA.The results show that water intrusion can cause moisture plasticisation of the interface,reduce the shear strength and increase the leakage current,while that destructive effects decrease with the dissipation of water;hydrolytic reaction of FRP/RPUF interface material undergoes under the effect of water,leading to the generation of local defects and the increase of impurity ions,which further destroys the mechanical and electrical properties of the interface.

关 键 词：复合绝缘横担 水分侵入 FRP/RPUF界面 老化特性 

分 类 号：TM215[一般工业技术—材料科学与工程] TM855[电气工程—电工理论与新技术]