Fabrication of high-thermal-conductivity and low-dielectric boron Nitride/Quartz Fiber/Epoxy composites

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Letters Pub Date : 2025-02-23 DOI:10.1016/j.matlet.2025.138284

Kunlun Zhao , Yuwei Liu , Ruoyu Huang , Xing Guo , Mingyuan Lin , Dafang Zhao , Xue-ao Zhang

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Abstract

This study developed a high-thermal-conductivity, low-dielectric composite material by incorporating hexagonal boron nitride (BN) into quartz fiber-reinforced epoxy resin and optimizing the autoclave-molding for BN alignment, thereby significantly enhancing the material’s thermal conductivity. Experimental results demonstrated that the ordered arrangement of BN platelets within the layered structure effectively constructed efficient thermal conduction pathways. When 30 wt% BN platelets were introduced into the resin, the in-plane and through-plane thermal conductivities of the composite reached 4.20 W·m^-¹·K^-¹ and 1.26 W·m^-1·K^-¹, respectively. Additionally, the effects of BN content on the mechanical and dielectric properties of the composite were investigated. This study provides valuable theoretical insights and process guidance for designing and fabricating high-thermal-conductivity and low-dielectric composites for thermal management applications in electric vehicles.

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制造高热导率和低介电氮化硼/石英纤维/环氧树脂复合材料

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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