高电压技术2025，Vol.51Issue(2)：915-924,10.DOI:10.13336/j.1003-6520.hve.20240292
基于双组份微胶囊自修复的环氧树脂自愈与闪络特性
Self-healing and Flashover Properties of Epoxy Resin Based on Two-component Microcapsule Self-healing
摘要
Abstract
The material quality,processing technology and external force will cause the epoxy resin to form micro-cracks and reduce its insulation performance.To solve the problem of misrepair of one-component microcapsules,an epoxy resin composite medium based on two-component microcapsules was designed in this paper.The experimental results show that the healing rate of composite media increases with the increase of microcapsule content,and when the microcapsule mass fraction is 10%,the healing rate reaches about 85%.In addition,the curing temperature and working temperature will enhance the fluidity of the repair agent and accelerate the curing reaction rate,thus improving the repair speed.The insulation performance test shows that,with the increase of microcapsule content,the dielectric loss of the composite me-dium increases,the breakdown voltage decreases,but the flashover voltage increases first and then decreases.The main reason for the increase of dielectric loss is that the addition of microcapsules increases the interface polarization loss and orientation polarization loss.The main reasons for the decrease of breakdown voltage are the interface defects introduced by the addition of microcapsules and the high conductivity of microcapsules.When the microcapsule content is low,the trap defect density increases,thus the flashover voltage increasing first.When the microcapsule content is high,the liquid core material increases,the surface conductivity of the composite medium increases,and the flashover voltage decreases.After the scratch damage is repaired,the flashover voltage on the surface of the medium can be restored to about 105%-116%of that without repair.关键词
微胶囊/双组份/环氧树脂/自愈/闪络电压Key words
microcapsule/two-component/epoxy resin/self-healing/flashover voltage引用本文复制引用
王健,陈科达,侯程志,晁文豪,李庆民..基于双组份微胶囊自修复的环氧树脂自愈与闪络特性[J].高电压技术,2025,51(2):915-924,10.基金项目
国家自然科学基金(52177140 （）
92266109) （）
中央高校基本科研业务费专项资金(2023JC005) （2023JC005）
山东省重点研发计划(2022JMRH0303).Project supported by National Natural Science Foundation of China(52177140,92266109),Special Fund for Basic Scientific Research for Central Universities(2023JC005),Key R&D Program of Shandong Prov-ince(2022JMRH0303). （2022JMRH0303）
