基于表面改性石墨烯纳米片和氮化铝的高介电导热聚偏氟乙烯复合材料

IF 2.5 4区 化学 Q3 POLYMER SCIENCE Macromolecular Chemistry and Physics Pub Date : 2024-07-19 DOI:10.1002/macp.202400020
Mengen Zhao, Haijun Wang, Kun Liu, Yao Wu, Chunlei Yuan
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引用次数: 0

摘要

本文报告了分别通过多巴胺和硅烷偶联剂对石墨烯纳米片(GNPs)和氮化铝(AlN)进行表面功能化改性的方法。这种改性通过确保填料在基体中的均匀分散,实现了聚偏二氟乙烯(PVDF)复合材料优异的介电性能。表面改性的 GNPs 和 AlN 之间的协同效应有利于增加 PVDF 的极性晶体并促进界面极化。制备的 PVDF/GNPs/AlN 复合材料介电常数高达 45,介电损耗仅为 0.044。同时,复合材料界面相容性的增强在一定程度上降低了界面热阻,形成了有效的热传导网络,提高了电子器件的散热能力,在介质储能方面具有潜在的应用前景。
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High Dielectric Thermal Conductivity Polyvinylidene Fluoride Composites Based on Surface-Modified Graphene Nanosheets and Aluminum Nitride

This article provides reports on the method of surface functionalization modification of graphene nanosheets (GNPs) and aluminum nitride (AlN) through polydopamine and silane coupling agents, respectively. This modification achieves excellent dielectric performance of polyvinylidene fluoride (PVDF) composites by ensuring the uniform dispersion of fillers within the matrix. The synergistic effect between surface-modified GNPs and AlN is conducive to increasing polar PVDF crystals and promoting interface polarization. The prepared PVDF/GNPs/AlN composites exhibit a dielectric constant as high as 45 with a dielectric loss of only 0.044. Meanwhile, the enhanced interface compatibility of composite materials, to a certain extent, reduces interface thermal resistance and forms an effective thermal conduction network, which enhances the heat dissipation capability of electronic devices and presents potential application in the dielectric energy storage.

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来源期刊
Macromolecular Chemistry and Physics
Macromolecular Chemistry and Physics 化学-高分子科学
CiteScore
4.30
自引率
4.00%
发文量
278
审稿时长
1.4 months
期刊介绍: Macromolecular Chemistry and Physics publishes in all areas of polymer science - from chemistry, physical chemistry, and physics of polymers to polymers in materials science. Beside an attractive mixture of high-quality Full Papers, Trends, and Highlights, the journal offers a unique article type dedicated to young scientists – Talent.
期刊最新文献
Issue Information: Macromol. Chem. Phys. 3/2025 Front Cover: Macromol. Chem. Phys. 3/2025 Front Cover: Macromol. Chem. Phys. 2/2025 Issue Information: Macromol. Chem. Phys. 2/2025 Issue Information: Macromol. Chem. Phys. 1/2025
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