Novel micro-capsule-doped insulating material with hydrophobicity transfer capability triggered by creepage discharge  

作　　者：Mingzhe Li Bin Cao Yuhao Liu Liming Wang 

机构地区：[1]Engineering Laboratory of Power Equipment Reliability in Complicated Coastal Environment,Shenzhen International Graduate School,Tsinghua University,Shenzhen,China

出　　处：《High Voltage》2022年第5期950-959,共10页高电压（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Number:51977118。

摘　　要：The lack of hydrophobicity transfer capability has restricted the applications of insulating materials in environments with heavy contamination.In this study,an epoxy resin insulating composite was prepared using a micro-capsule system to achieve hydrophobicity transfer triggered by creepage discharge.The influence of the micro-capsules on the electrical properties of insulating materials and the hydrophobicity of the test samples before and after the creepage discharge test was analysed.The results show that the poly(urea-formaldehyde)micro-capsules,which contained hydrogen silicone oil,have good morphology and thermal stability characteristics at temperatures below 222℃.Microcapsules have minor effects on the electrical properties of epoxy insulating materials.Further,the hydrophobicity transfer capability of the test piece was improved considerably compared with that of the pure epoxy insulating material.This study expands the application of micro-capsule technology in the field of insulating materials and provides a reference for the development of next-generation insulating materials.

关 键 词：CREEPAGE TRANSFER insulating 

分 类 号：TM216[一般工业技术—材料科学与工程]