Abstract: To address the increasing number of transmission line faults caused by bird damage, this paper proposes a method of using spray polyurea elastomer composite materials for local insulation enhancement on the conductor side(high-voltage side)of transmission lines to improve the insulation performance of the lines. In order to optimize the performance of polyurea elastomer materials, this paper introduces three filler particles, namely MgO, SiO₂ and CaO, to modify the polyurea curing system, and conducts orthogonal experiments to study the influence of different fillers on the comprehensive performance of polyurea materials.- 引用格式:何梦腾,潘浩文,邓洪兴,等.基于点云多尺度方向一致性的羊只体尺测量方法［J］.河北大学学报(自然科学版),2026,46(2):113-127.引用格式:汪帆,王阳,贾铮,等.复合纳米填料对聚脲材料电气绝缘性能的提升及工程应用［J］.河北大学学报(自然科学版),2026,46(2):160-172.DOI:10.3969/j.issn.1000-1565.2026.02.005复合纳米填料对聚脲材料电气绝缘性能的提升及工程应用汪帆¹,王阳¹,贾铮¹,陆俊俊¹,刘同宝¹,钱苗旺¹,李北军²(1.国网江苏省电力有限公司 连云港供电公司, 江苏 连云港 222000;2.华北电力大学 电力工程系, 河北 保定 071003)摘 要:为应对因鸟害导致的输电线路故障日益增加的问题,提出在输电线路导线侧(高压侧)采用喷涂聚脲弹性体复合材料进行局部绝缘增强的方法,以提高线路绝缘性能.针对聚脲弹性体材料的性能优化,本文通过引入MgO、SiO₂、CaO 3种填料粒子改性聚脲固化体系,并采用正交实验研究不同填料对聚脲材料综合性能的影响.实验结果表明,纳米粒子可有效改善材料的微观结构缺陷,提升其交流击穿强度.特别是当MgO、SiO₂、CaO的掺量(质量分数)分别为4%、0.5%、4%时,聚脲材料的综合性能最佳,其交流击穿强度提高了13.42%,热导率提升了12.05%.关键词:聚脲;电介质;正交实验;纳米颗粒;微米颗粒中图分类号:TM211 文献标志码:A 文章编号:1000-1565(2026)02-0160-13DOI:10.3969/j.issn.1000-1565.2026.02.005Improvement and engineering application of composite nano-fillers on the electrical insulation properties of polyurea materialsWANG Fan¹, WANG Yang¹, JIA Zheng¹, LU Junjun¹, LIU Tongbao¹, QIAN Miaowang¹, LI Beijun²(1. State Grid Jiangsu Electric Power Co., Ltd., Lianyungang Power Supply Company, Lianyungang 222000, China;2. Department of Power Engineering, North China Electric Power University, Baoding 071003, China)Abstract: To address the increasing number of transmission line faults caused by bird damage, this paper proposes a method of using spray polyurea elastomer composite materials for local insulation enhancement on the conductor side(high-voltage side)of transmission lines to improve the insulation performance of the lines. In order to optimize the performance of polyurea elastomer materials, this paper introduces three filler particles, namely MgO, SiO₂ and CaO, to modify the polyurea curing system, and conducts orthogonal experiments to study the influence of different fillers on the comprehensive performance of polyurea materials.- 收稿日期:2025-07-06;修回日期:2025-11-20 基金项目:国网江苏省电力有限公司科学技术项目(J2024126) 第一作者:汪帆(1991—),男,国网江苏省电力有限公司连云港供电公司工程师,主要从事输电线路运维、检修以及输电线路六防方向研究.E-mail:1784814972@qq.com 通信作者:王阳(1985—),男,国网江苏省电力有限公司连云港供电公司工程师,主要从事永磁同步电机本体设计方向研究.E-mail:carpediem1224@163.com 第2期汪帆等:复合纳米填料对聚脲材料电气绝缘性能的提升及工程应用河北大学学报(自然科学版) 第46卷The experimental results show that nanoparticles can effectively improve the microstructure defects of materials and enhance their alternating current breakdown strength. Especially when the dosages of MgO, SiO₂ and CaO are 4%, 0.5% and 4% respectively, the comprehensive performance of polyurea material is the best. Its alternating current breakdown strength increases by 13.42% and the thermal conductivity increases by 12.05%.

Key words: polyurea, dielectric, orthogonal experiments, nanoparticles, microparticles