中国电机工程学报2026，Vol.46Issue(8)：3298-3309,中插19,13.DOI:10.13334/j.0258-8013.pcsee.242734
通过交联效应增强聚酰亚胺介质高温储能性能
Enchance the Energy Storage Performance of Polyimide Dielectrics by Cross-linked Effect
摘要
Abstract
At high temperatures and strong electric fields,the excitation and transfer rates of electrons in dielectrics accelerate,leading to a sharp increase in conduction losses,which severely affects the energy storage performance and application of dielectrics.This study utilizes 2,4,6—triaminopyrimidine(TAP)as a cross-linking agent to prepare cross-linked polyimide(PI/TATP)composite films.Through performance testing and simulation,the research investigates the impact of the cross-linked effect on the electron migration and energy storage performance of the composite films.Research results indicate that the cross-linked network structure can reduce the free volume between molecular chains and inhibit the transport of charge carriers.The introduction of a wide bandgap TAP crosslinking agent establishes an additional energy barrier between the PI(polyimide)and TAP,which suppresses electron transitions and effectively reduces the conduction loss in the dielectric film.When the content of the cross-linking agent is 1%,the energy density of the PI/TATP composite dielectric reaches 4.41 J/cm3 at 150℃and 578 MV/m,while the charge-discharge efficiency remains above 90%,representing a 79.3%improvement over the original PI film.This research provides theoretical and technical references for the development of high-performance capacitors.关键词
聚酰亚胺/交联效应/自由体积/带隙宽度/储能性能Key words
polyimide/cross-linked effect/free volume/bandgap width/energy storage performance分类
通用工业技术引用本文复制引用
张佳琦,迟庆国,张启越,张天栋,张统钦,张月,张昌海..通过交联效应增强聚酰亚胺介质高温储能性能[J].中国电机工程学报,2026,46(8):3298-3309,中插19,13.基金项目
国家自然科学基金项目(92366204) （92366204）
黑龙江省自然科学基金(优秀青年基金项目)(YQ2024E042) （优秀青年基金项目）
黑龙江省优秀青年教师基础研究支持计划重点项目.Project Supported by National Natural Science Foundation of China(92366204) （92366204）
National Natural Science Foundation of Heilongjiang Province(Outstanding Youth Fund)(YQ2024E042) （Outstanding Youth Fund）
Key Project of Heilongjiang Provincial Basic Research Support Program for Outstanding Young Teachers. （）
