Fabrication of internally porous polyacrylonitrile carbon fibers for enhanced thermal insulation property in EPDM composites

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-08-29 DOI:10.1016/j.matlet.2025.139421

Lijuan Cao , Jieying Zhi , Xiaoxuan Lu , Yu Yang , Guojing Zhao

引用次数: 0

Abstract

This study presents the fabrication of internally porous polyacrylonitrile carbon fibers (PCFs) to enhance the thermal insulation property in ethylene propylene diene monomer (EPDM) composites. By employing the precursor fibers without hot-stretching, PCFs with unique skin-core structure and abundant internal pores are obtained. These pores, combined with disordered carbon texture, significantly increase electrical resistivity by 56.4 % compared to conventional carbon fibers, while maintaining acceptable mechanical property and high carbon content. The PCF/EPDM composite exhibits prominently declined thermal conductivity (0.770 W/(m·K)) and moderate ablation resistance, making it a promising candidate for heat shielding materials in solid rocket motors. This work offers a new strategy to balance thermal insulation and ablation resistance in high-performance composites.

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增强EPDM复合材料保温性能的内孔聚丙烯腈碳纤维的制备

本文研究了内孔聚丙烯腈碳纤维（PCFs）的制备，以提高三元乙丙橡胶（EPDM）复合材料的保温性能。采用不经热拉伸的前驱体纤维，可获得具有独特皮芯结构和丰富内部孔隙的聚丙烯腈纤维。与传统碳纤维相比，这些孔隙与无序的碳结构相结合，显著提高了56.4%的电阻率，同时保持了可接受的机械性能和高碳含量。PCF/EPDM复合材料的导热系数显著降低（0.770 W/(m·K)），抗烧蚀性能适中，是固体火箭发动机热屏蔽材料的理想选择。这项工作为平衡高性能复合材料的隔热性能和抗烧蚀性能提供了一种新的策略。

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

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive