Journal of South China University of Technology(Natural Science) >

2025 , Vol. 53 >Issue 1: 92 - 100

DOI: https://doi.org/10.12141/j.issn.1000-565X.240053

Materials Science & Technology

Preparation and Performance Study of Tri-Component Copolymerized High Dielectric Performance Polyimide

  • CAO Xianwu ,
  • YAO Zhiqiang ,
  • HUANG Qilong ,
  • ZENG Peipei ,
  • ZHAO Wanjing
Expand
  • School of Mechanical and Automative Engineering/Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing/National Engineering Research Center of Novel Equipment for Polymer Processing/The Key Laboratory of Polymer Processing Engineering of Ministry of Education，South China University of Technology，Guangzhou 510640，Guangdong，China
曹贤武（1970 —），男，教授，博士生导师，主要从事高性能聚合物介电材料和绝缘材料、高分子材料加工成型技术研究。E-mail： ppeme@scut.edu.cn

Received date: 2024-01-29

  Online published: 2024-06-19

Supported by

the National Natural Science Foundation of China(52173035)

Fold

Abstract

At present, with the development of the energy field, the requirements for capacitors continue to increase. Capacitors with high temperature performance and high energy storage have become a research hotspot. High energy storage density requires high dielectric constant and low dielectric loss. The special engineering material polyimide (PI) is favored by people because of its high temperature resistance, but its low energy storage density restricts its application. In order to make better use of the high temperature resistance of polyimide and find an excellent synthesis route from the diversity of its synthetic raw materials, this paper aimed to prepare polyimide (PI) with high dielectric constant and low dielectric loss, and study the effect of isomer 2,3,3',4'-biphenyltetracarboxylic dianhydride (a-BPDA) and 3,3',4,4'-biphenyltetracarboxylic dianhydride (s-BPDA) on the dielectric properties of polyimide. Using a-BPDA, s-BPDA, 3,3',4,4'-benzophenonetetracarboxylic dianhydride (BTDA), 4'-bis (3-aminophenoxy) diphenyl sulfone (m-BAPS) as raw material, PI film was prepared by ternary copolymerization, so as to verify the feasibility of the scheme. On this basis, the proportion of raw materials was allocated to explore the best performance of various raw material ratios. The films were characterized by FTIR analysis, XRD analysis, thermal performance analysis and dielectric performance analysis. The experimental results show that a-BPDA, s-BPDA, BTDA and m-BAPS can successfully synthesize polyimide films. The synthesized films still have high thermal properties. a-BPDA and s-BPDA increase the glass transition temperature of polyimide to 245.8 ℃ and 239.1 ℃, respectively. s-BPDA and a-BPDA have different effects on the dielectric properties of polyimide. When the ratio of s-BPDA to BTDA is 3∶2, the dielectric constant of sPI was 4.25 and the dielectric loss is 0.002 9 at 1 000 Hz. When the ratio of a-BPDA to BTDA is 3∶2, the dielectric constant of aPI is 3.49 and the dielectric loss is 0.002 3. Under comprehensive comparison, s-BPDA is more effective in improving the thermal and dielectric properties of polyimide.

Key words： polyimide; tri-component copolymerization; high dielectric constant; low dielectric lost

Cite this article

CAO Xianwu , YAO Zhiqiang , HUANG Qilong , ZENG Peipei , ZHAO Wanjing . Preparation and Performance Study of Tri-Component Copolymerized High Dielectric Performance Polyimide[J]. Journal of South China University of Technology(Natural Science), 2025 , 53(1) : 92 -100 . DOI: 10.12141/j.issn.1000-565X.240053

References

1 李玉超，付雪连，战艳虎，等 ．高介电常数、低介电损耗聚合物复合电介质材料研究进展［J］．材料导报，2017，31（8）：18-23.
  LI Yuchao， FU Xuelian， ZHAN Yanhu，et al ．Advances in polymer dielectrics with high dielectric constant and low dielectric loss［J］．Materials Reports，2017，31（8）： 18-23.
2 CHEN Q， SHEN Y， ZHANG S，et al ．Polymer-based dielectrics with high energy storage density［J］．Annual Review of Materials Research，2015，45（1）：433-458.
3 张博钊，刘志英 ．聚合物基电介质薄膜电容器研究进展［J］．工程塑料应用，2023，51（7）：171-174.
  ZHANG Bozhao， LIU Zhiying ．Research process in energy storage performance of polymer dielectric film capacitors［J］．Engineering Plastics Application，2023，51（7）：171-174.
4 查俊伟，黄文杰，杨兴，等 ．本征耐高温电极化储能聚合物电介质研究进展［J］．高电压技术，2023，49（3）：1055-1066.
  ZHA Junwei， HUANG Wenjie， YANG Xing，et al ．Research progress of intrinsic high temperature polymer dielectrics with high energy storage by electric polarization［J］．High Voltage Engineering，2023，49（3）：1055-1066.
5 王琦桐，丁嘉乐，赵丹莹，等 ．储能薄膜电容器介电高分子材料［J］．化学进展，2023，35（1）：168-176.
  WANG Qitong， DING Jiale， ZHAO Danying，et al ．Dielectric polymer materials for energy storage film capacitors［J］．Progress in Chemisty，2023，35（1）：168-176.
6 王锦玉，卢文新 ．聚合物基薄膜电容器的应用现状和市场分析研究［J］．化肥设计，2022，60（5）：1-4，9.
  WANG Jin-yu， LU Wen-xin ．Application status and market analysis of polymer-based film capacitors［J］．Chemical Fertilizer Design，2022，60（5）：1-4，9.
7 YOKOTA R， YAMAMOTO S， YANO S，et al ．Molecular design of heat resistant polyimides having excellent processability and high glass transition temperature ［J］．High Performance Polymers，2001，13（2）：61-72.
8 HUAN T D， BOGGS S， TEYSSEDRE G，et al ．Advanced polymeric dielectrics for high energy density applications［J］．Progress in Materials Science，2016，83（1）：236-269.
9 ZHU L ．Exploring strategies for high dielectric constant and low loss polymer dielectrics［J］．Journal of Physical Chemistry Letters，2014，5（21）：3677-3687.
10 孙骏，赵韩，邵康培 ．储能薄膜电容器在电动汽车上的应用研究［J］．电力电容器与无功补偿，2009，30（2）：37-40.
  SUN Jun， ZHAO Han， SHAO Kangpei ．Study on energy storage flim capacitor used in electric vehicle［J］．Power Capacitor＆ Reactive Power Compensation，2009，30（2）：37-40.
11 TONG H， FU J， AHMAD A，et al ．Sulfonyl-containing polyimide dielectrics with advanced heat resistance and dielectric properties for high-temperature capacitor applications［J］．Macromolecular Materials and Engineering，2019，304（4）：1800709/1-6.
12 ZHU T， YU Q， ZHENG W，et al ．Intrinsic high-k-low-loss dielectric polyimides containing ortho-position aromatic nitrile moieties：reconsideration on Clausius-Mossotti equation［J］．Polymer Chemistry，2021，12（16）： 2481-2489.
13 PENG X， XU W， CHEN L，et al ．Development of high dielectric polyimides containing bipyridine units for polymer film capacitor［J］．Reactive and Functional Polymers，2016，106（1）：93-98.
14 罗金鹏 ．本征高储能密度聚酰亚胺电介质分子设计及性能调控［D］．南昌：南昌大学，2023.
15 曹诗沫，朱家峰，罗金鹏，等 ．基于环丁烷四甲酸酐的脂环聚酰亚胺介电性能研究［J］．高分子学报，2022，53（12）：1514-1522.
  CAO Shi-mo， ZHU Jia-feng， LUO Jin-peng，et al ．Dielectric properties of alicyclic polyimidesderived rom cyclobutane-1，2，3，4-tetracarboxylic dianhydride［J］．Acta Polymerica Sinica，2022，53（12）：1514-1522.
16 WU D， ZHAO X， LI X，et al ．Polyimide film containing sulfone groups with high dielectric properties ［J］．Polymer，2022，256（1）：125221/1-10.
17 XU T， LIU H， ZHAO R，et al ．High dielectric constant polyimide for high-temperature film capacitor by tuning macroconjugated molecule［J］．Journal of Materials Science： Materials in Electronics，2023，34（7）：573/1-8.
18 ALAMRI A， WU C， NASREEN S，et al ．High dielectric constant and high breakdown strength polyimide via tin complexation of the polyamide acid precursor ［J］．RSC Advances，2022，12（15）：9095-9100.
19 赵璐 ．热塑性聚酰亚胺及其耐击穿复合材料的制备与性能研究［D］；广州：华南理工大学，2022.
20 ZHENG W， LI Z， CHEN K，et al ．Temperature-resistant intrinsic high dielectric constant polyimides：more flexibility of the dipoles，larger permittivity of the materials［J］．Molecules，2022，27（19）：6337/1-12.
Options
Outlines

/

〈 〉