Enhancing the thermal conductivity of polymer-bonded explosives via constructing a three-dimensional graphene network

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Colloid and Polymer Science Pub Date : 2025-05-10 DOI:10.1007/s00396-025-05428-1

Jingzhou Chen, Fangfang He, Zhipeng Liu, Weijie Hong, Peng Wang, Guansong He, Wenbin Yang

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Abstract

The thermal conductivity of energetic materials significantly affects their safety and environmental adaptability. To enhance the thermal conductivity of polymer-bonded explosives (PBXs), this study used melamine particles (MP) as PBX substitutes, with graphene nanosheets (GNPs) as thermal fillers and fluorinated polymer (F2314) as the binder. The MP@GNPs core–shell structure was initially constructed using the electrostatic self-assembly method. Subsequently, the MP@GNPs/F2314 core–shell structure was fabricated via the water suspension method, and a three-dimensional thermally conductive network was established through hot pressing. At 0.5 wt% GNPs, the composite’s thermal conductivity (k) increased by 79% compared to pure MP. Further validation using HMX-based PBXs showed a 47% improvement (0.5367 W·m⁻¹·K⁻¹). The temperature gradient and distribution of thermal stress in PBX cylinders under complex thermal variation were evaluated using finite element analysis.

Graphical abstract

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通过构建三维石墨烯网络来增强聚合物粘结炸药的导热性

含能材料的热导率对其安全性和环境适应性有重要影响。为了提高聚合物粘结炸药（PBXs）的导热性，本研究使用三聚氰胺颗粒（MP）作为PBX替代品，石墨烯纳米片（GNPs）作为热填料，氟化聚合物（F2314）作为粘结剂。MP@GNPs核壳结构最初采用静电自组装方法构建。随后，通过水悬浮法制备MP@GNPs/F2314核壳结构，并通过热压建立三维导热网络。在0.5 wt% GNPs下，与纯MP相比，复合材料的导热系数(k)提高了79%。使用基于hmx的pbx进一步验证，结果显示提高了47% （0.5367 W·m−1·K−1）。采用有限元方法对复杂热变化条件下PBX圆柱体的温度梯度和热应力分布进行了分析。图形抽象

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

Colloid and Polymer Science 化学-高分子科学

CiteScore

4.60

自引率

4.20%

发文量

111

审稿时长

2.2 months

期刊介绍： Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.