高电压技术2026，Vol.52Issue(5)：2282-2290,9.DOI:10.13336/j.1003-6520.hve.20250378
基于油水相分离的多孔环氧树脂制备及闪络强度提升机理
Preparation of Porous Epoxy Resin Based on Oil-water Phase Separation and Mechanism of Flashover Strength Enhancement
摘要
Abstract
Surface flashover is a critical bottleneck restricting the reliable operation of electrical equipment.Although porous structures have proven effective in enhancing flashover strength,existing construction methods are difficult to ap-ply to traditional insulating materials like epoxy resin.We successfully prepared porous epoxy resin insulation materials through thermal curing combined with an oil-water phase separation method.Porous structure in epoxy resin is con-structed by the suspended water droplets.By adjusting the water phase content(5％～40％),we regulated the porous morphology of the epoxy matrix and analyzed the influence of pores on material hydrophobicity and flashover strength.Through potential decay analysis,potential scanning,and discharge path observation,the mechanism of porous structure in enhancing flashover strength is revealed.The results indicate that,when the pore-forming agent(water)content reaches 10％～20％,the flashover strength improvement is optimal,showing a maximum enhancement of 24.8％compared to non-porous materials.The enhancement can be attributed to the combined effects of pore-induced surface charge dissipa-tion and corona stabilization.关键词
环氧树脂/多孔结构/沿面闪络/疏水性/电荷输运调控Key words
epoxy resin/porous structure/surface flashover/hydrophobicity/charge transport regulation引用本文复制引用
任杰睿,朱明晓,徐学凯,刘睿,罗禄洋,石博..基于油水相分离的多孔环氧树脂制备及闪络强度提升机理[J].高电压技术,2026,52(5):2282-2290,9.基金项目
山东省自然科学基金(ZR2021ME027) （ZR2021ME027）
青岛市自然科学基金(24-4-4-zrjj-172-jch).Project supported by Natural Science Foundation of Shandong Province of China(ZR2021ME027),Qingdao Natural Science Foundation(24-4-4-zrjj-172-jch). （24-4-4-zrjj-172-jch）
