Sandwich-structured all-organic composites with high breakdown strength and high dielectric constant for film capacitor

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING

Composites Part A: Applied Science and Manufacturing Pub Date : 2019-02-01 DOI:10.1016/j.compositesa.2018.12.007

Lu Wang, Hang Luo, Xuefan Zhou, Xi Yuan, Kechao Zhou, Dou Zhang

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引用次数: 57

Abstract

Currently, energy storage capacitors with high breakdown strength and dielectric constant are highly desired in microelectronics and electric power systems. All-organic film capacitors have been studied owing to their high breakdown strength and low dielectric loss. In this study, poly(vinylidene fluoride) (PVDF) with high breakdown strength was used as outer layers and poly(vinylidenefluoride-ter-trifluoroethylene-ter-chlorotrifluoroethylene) (P(VDF-TrFE-CTFE)) with high dielectric constant was used as the interlayer to prepare sandwich-structured composites. These PVDF/P(VDF-TrFE-CTFE)/PVDF composites with various contents of terpolymer were manufactured through a layer-by-layer solution-casting method. At 1 kHz, the maximum dielectric constant of the sandwich-structured composites reaches up to 18.61 when the content of terpolymer is 45 vol%. The discharged energy density increases with the increasing content of terpolymer at the same electric filed. At 660 kV/mm, the composite with 25 vol% terpolymer delivers the maximum discharged energy density, which is 20.86 J/cm³.

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薄膜电容器用高击穿强度、高介电常数的三明治结构全有机复合材料

目前，具有高击穿强度和高介电常数的储能电容器在微电子和电力系统中得到了广泛的应用。全有机薄膜电容器因其高击穿强度和低介电损耗而受到广泛的研究。本研究以击穿强度高的聚偏氟乙烯(PVDF)为外层，以介电常数高的聚偏氟乙烯-三氟乙烯-三氟乙烯-氯三氟乙烯(P(VDF-TrFE-CTFE))为中间层制备三明治结构复合材料。采用逐层溶液浇铸法制备了不同三元共聚物含量的PVDF/P(VDF-TrFE-CTFE)/PVDF复合材料。在1 kHz时，当三元共聚物含量为45 vol%时，夹层结构复合材料的最大介电常数达到18.61。在相同电场条件下，随三元共聚物含量的增加，放电能量密度增大。在660 kV/mm时，含有25% 体积%三元共聚物的复合材料的最大放电能量密度为20.86 J/cm3。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.