五角星状ZrO_(2)改性聚酰亚胺的绝缘耐高温性能研究  

Research on insulation and resistance to high temperature of Star-like ZrO_(2)modified polyimide

作　　者：刘婉婉 曹丽云[1] 冯永强 成智文 刘婷 赵勇 刘一军 黄剑锋[1] LIU Wan-wan;CAO Li-yun;FENG Yong-qiang;CHENG Zhi-wen;LIU Ting;ZHAO Yong;LIU Yi-jun;HUANG Jian-feng(School of Material Science and Engineering,International S&T Cooperation Foundation of Shaanxi Province,Shaanxi University of Science&Technology,Xi′an 710021,China;Xianyang Research&Design Institute of Ceramic Co.,Ltd.,Xianyang 712000,China;Guangdong Mona Lisa Group Co.,Ltd.,Foshan 528211,China)

机构地区：[1]陕西科技大学材料科学与工程学院陕西省国际科技合作基地,陕西西安710021 [2]咸阳陶瓷研究设计院有限公司,陕西咸阳712000 [3]广东蒙娜丽莎集团有限公司,广东佛山528211

出　　处：《陕西科技大学学报》2024年第2期124-131,共8页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(52073166,52172049,U22A20144);陕西省国际科技合作重点计划项目(2023GHZD-08,2020GHJD-04);陕西省农业厅农业科技创新驱动计划项目(NYKJ-2022-XA-08);陕西省秦创原“科学家+工程师”队伍建设项目(2022KXJ-111);陕西省西安市科技计划项目(22GXFW0013);陕西省西安市未央区科技计划项目(202315)。

摘　　要：新能源汽车工业的快速发展给汽车电机绝缘漆包线的耐温性能提出了更高要求,制备高性能且价格低廉的漆包线漆膜成为该领域的研究热点.本文提出用一步溶剂热法制备出五角星状ZrO_(2)纳米粉体,利用原位聚合法制备一种高性能、价格低廉的PI/五角星状ZrO_(2)复合薄膜.研究结果表明:制备的五角星状ZrO_(2)纳米粉体分布均匀,进而提高了ZrO_(2)在PI聚合物里的分散性;加入3%的五角星状ZrO_(2)纳米粉体后,相对于纯PI薄膜,PI/五角星状ZrO_(2)复合薄膜的疏水性能得到了提升,拉伸应力提高了4.8倍,初始热分解温度提高了8.30%,介电常数提高了3.2倍.可以看出,五角星状的ZrO_(2)对于纯PI薄膜绝缘、耐高温性能有显著提升.本工作对开发新型高性能漆包线新配方具有重要指导意义.The rapid development of new energy automobile industry has put forward higher requirements for the temperature resistance of insulating enameled wire of automobile motor.The preparation of high-performance and low-cost enameled wire coating has become a research hotspot in this field.In this paper,the one-step solvent-thermal method was used to prepare pentagonal star-like ZrO_(2)particles.In situ polymerization method was used to prepare a PI/pentagonal star-like ZrO_(2)composite film with high performance and low cost.The results showed that the prepared pentagonal star-like ZrO_(2)particles were uniformly distributed,which improved the dispersion of ZrO_(2)in PI polymer.Compared with pure PI films,the hydrophobic properties and tensile stress of PI/pentagonal star-like ZrO_(2)composite films are improved by 4.8 times after adding 3%of ZrO_(2)nanoparticles.The initial thermal decomposition temperature was increased by 8.30%.The dielectric constant is increased by 3.2 times.It can be seen that the five-pointed star ZrO_(2)has significantly improved the insulation and high temperature resistance of pure PI film.This work has important guiding significance for developing new formula of high performance enameled wire.

关 键 词：五角星状ZrO_(2) 聚酰亚胺复合薄膜 绝缘 耐高温 

分 类 号：TB324[一般工业技术—材料科学与工程]