中国电机工程学报2024，Vol.44Issue(9)：3371-3377,中插2,8.DOI:10.13334/j.0258-8013.pcsee.230041
接枝聚丙烯电容薄膜的高温储能特性
High Temperature Energy Storage Characteristics of Grafted Polypropylene Capacitor Film
摘要
Abstract
With the rapid development of offshore wind power,electric drive vehicle and oil and gas exploration,film capacitors are required to operate at higher temperature.However,when the temperature reaches 120℃,the charge-discharge efficiency of the most widely used biaxially oriented polypropylene(BOPP)decreases sharply,which fails to meet the demand of applications.In this paper,biaxially oriented dielectric films of styrene-grafted polypropylene(PP-g-St)are prepared.It is found that the energy density of PP-g-St is increased from 0.23 J/cm3 to 1.67 J/cm3(grafting efficiency is 90%)at 120℃.At the same time,the breakdown field is greatly enhanced and the high temperature leakage current is effectively suppressed,which can contribute to the deep traps introduced by grafting significantly hindering the charge transportation.After stretching,the self-polymerized phase has good compatibility with the polypropylene matrix.This study provides a potential technical route for large-scale production of polypropylene-based capacitor materials for high temperature and high field applications.关键词
接枝聚丙烯/双向拉伸薄膜/薄膜电容器/高温/介电储能Key words
grafted polypropylene/biaxially oriented film/film capacitor/high temperature/dielectric energy storage分类
信息技术与安全科学引用本文复制引用
罗兵,李君洛,王少杰,胡世勋,徐永生,肖微,徐刚毅,何金良,李琦..接枝聚丙烯电容薄膜的高温储能特性[J].中国电机工程学报,2024,44(9):3371-3377,中插2,8.基金项目
特高压工程技术(昆明、广州)国家工程实验室开放基金(NELUHV-2021-KF-03). Supported by National Engineering Laboratory for Ultra High Voltage Engineering Technology(Kunming,Guangzhou)(NELUHV-2021-KF-03). （昆明、广州）
