Improving thermal conductivity of phthalonitrile composite through constructing three-dimensional graphene networks and interfacial engineering

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2024-11-05 DOI:10.1016/j.coco.2024.102134

Yanmin Pei , Jiangnan Ding , Chao Zhou , Kun Zheng , Heng Zhou , Tong Zhao

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Abstract

Achieving high thermal conductivity for polymer composite with low filler loading is still a challenge. Here, phthalonitrile (APN)/few-layer graphene (FLG) composite with high thermal conductivity was successfully prepared by constructing three dimensional (3D) thermally conductive pathways. Such 3D structure was formed by hot compressing APN@FLG core-shell structures. The results showed that the thermal conductivity of APN@FLG composites with only 30 wt% of FLG was up to 11.4Wm⁻¹K⁻¹, which was 57 times to that of the pristine resin (0.2 Wm⁻¹K⁻¹). Such high thermal conductivity was attributed to the 3D connected thermally conductive networks. Furthermore, benefited from the high thermal stability of APN matrix, the as-prepared composite also showed high T₅ (temperature of mass losing 5 %) of higher than 500 °C. The composite with both high thermal conductivity and heat resistance are expected to be an idea candidate for high temperature thermal management applications.

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通过构建三维石墨烯网络和界面工程改善邻苯二腈复合材料的导热性能

如何在低填料含量的聚合物复合材料中实现高导热性仍然是一项挑战。在这里，通过构建三维（3D）导热通道，成功制备了具有高导热性的邻苯二腈（APN）/几层石墨烯（FLG）复合材料。这种三维结构是通过热压 APN@FLG 核壳结构形成的。结果表明，仅含有 30 wt% FLG 的 APN@FLG 复合材料的导热系数高达 11.4Wm-1K-1，是原始树脂（0.2 Wm-1K-1）的 57 倍。如此高的热导率归功于三维连接的导热网络。此外，得益于 APN 基体的高热稳定性，制备的复合材料还显示出高于 500 °C 的高 T5（质量损失 5 % 的温度）。这种同时具有高热导率和高耐热性的复合材料有望成为高温热管理应用的理想候选材料。

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 Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.