ZnO/PI复合薄膜的制备及电气特性表征  

Preparation and Electrical Characterization of ZnO/PI Composite Films

作　　者：张朋飞 张保康 张玉苹 易羽 王一帆 ZHANG Pengfei;ZHANG Baokang;ZHANG Yuping;YI Yu;WANG Yifan(School of Electrical Engineering,Chongqing University,Chongqing 400044,China;Fangyuan Testing Certification Group Co.,Ltd.,Zhengzhou,Henan 450001,China;State Grid Zhengzhou Power Supply Company,Zhengzhou,Henan 450001,China)

机构地区：[1]重庆大学,电气工程学院,重庆400044 [2]方圆检测认证集团有限公司,河南郑州450001 [3]国网郑州市供电公司,河南郑州450001

出　　处：《塑料》2025年第1期58-62,80,共6页Plastics

基　　金：国网郑州供电公司科技项目(GDW1701-QC281-2022)。

摘　　要：聚酰亚胺(PI)由于其较好的物理与化学性能在绝缘质材料领域得到广泛关注,在电子器件封装、航空航天领域及电力电缆中已得到规模化应用。为了提高复合绝缘材料的电气特性及应用价值,并开发聚酰亚胺的改性方法,先利用仿真方法得到电缆绝缘材料改性后电场分布的优化效果,再通过改变氧化锌(ZnO)纳米颗粒质量分数制备出不同掺杂量的ZnO/PI复合薄膜进行实验验证,最后,对复合材料的电气特性进行深入研究。结果表明,当ZnO的质量分数为1.5%时,ZnO/PI复合薄膜的击穿场强较高,与纯PI薄膜相比,约提升了20%,证明了ZnO纳米颗粒可以实现在低添加量下显著提升复合薄膜的击穿场强。Polyimide(PI)had attracted wide attention in the field of insulation materials due to its excellent physical and chemical properties.PI films had been extensively applied in electronic device packaging,aerospace,and power cable.The main purpose of this research was to improve the electrical characteristics and application value of composite insulation materials and enriched the modification methods of polyimide.First,using simulation methods obtained the optimization effect of electric field distribution after modification of cable insulation materials,the ZnO/PI composite films with different doping amounts was prepared by changing the mass fraction of zinc oxide(ZnO)nanoparticles for experimental verification and explored the electrical characteristics of the composite materials.The results showed that when the mass fraction of ZnO was 1.5%,the breakdown field strength of the ZnO/PI composite film reached the highest level.Compared to pure PI film,the maximum improvement of the breakdown field strength of the composite film was nearly 20%at a lower concentration.This research achieved significant enhancement of the breakdown field strength of the composite film at a low additive content by ZnO nanoparticles.

关 键 词：聚酰亚胺 纳米ZNO 介电常数 击穿性能 电场仿真 

分 类 号：TQ323.7[化学工程—合成树脂塑料工业]