具有优异电绝缘性能的氟化石墨/聚二甲基硅氧烷复合材料

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

Materials Letters Pub Date : 2025-07-07 DOI:10.1016/j.matlet.2025.139066

Xiquan Xiao, Peiyao Du, Zhixing Wang, Jiqiang Tu, Yongfan Lin, Jiawei Wu, Lihua Zhao, Shenli Jia, Lichuan Jia

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引用次数: 0

摘要

聚二甲基硅氧烷（PDMS）由于其良好的绝缘性和易加工性，被广泛应用于电力电子器件的关键封装材料之一。然而，PDMS在现代大功率电子器件中的应用仍需要提高其绝缘性能。本文采用氟化石墨（f-石墨）作为填料来改善PDMS的绝缘性能。结果表明，f-石墨/PDMS复合材料的体积电阻率为9.9 × 1014 Ω·cm，击穿强度为47.3 kV/mm，远远优于纯PDMS （3.3 × 1013 Ω·cm和37.8 kV/mm）。这些发现为开发用于电力电子应用的高绝缘PDMS材料提供了有价值的见解。

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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Fluorinated graphite/polydimethylsiloxane composites with superior electrical insulation

Polydimethylsiloxane (PDMS) is widely used as one key packaging materials in power electronic devices due to its good insulation and easy processability. However, it is still required to enhance the insulation performance of PDMS for its applications in modern high power electronic devices. Herein, fluorinated graphite (f-graphite) was employed as a filler to improve the insulation performance of PDMS. It was found that the resultant f-graphite/PDMS composite with 5 wt% f-graphite content exhibited a high volume resistivity of 9.9 × 10¹⁴ Ω·cm, and an enhanced breakdown strength of 47.3 kV/mm, which was far superior to that of pure PDMS (3.3 × 10¹³ Ω·cm and 37.8 kV/mm). These findings provided valuable insights into the development of high insulation PDMS materials for power electronic applications.

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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