Improving the thermal, mechanical, and insulating characteristics of thermal interface materials with liquid metal-based diphase structure

IF 3.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science Pub Date : 2024-10-18 DOI:10.1007/s10853-024-10176-8

Siyu Chen, Ruifeng Li, Hongxiang Hu, Jingdong Guo, Song Wei, Wangyun Li

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Abstract

Gallium-based liquid metal has significant research value in interfacial heat transfer due to high its thermal conductivity. However, its great fluidity frequently causes the risk of leakage and corrosion when in direct contact with heat sinks. In this paper, a high-performance thermal pad with diphase continuous structure reinforced by liquid metal is proposed. Nickel-coated copper particles connected by liquid metal ensure heat-transfer performance, while silicone rubber provides softness and strength. Utilizing the remarkable processability and insulation properties of conventional polymers, they function as a barrier layer to avoid liquid metal from overflowing. The findings indicate that the composite exhibits favorable insulation performance, mechanical characteristics, and a thermal conductivity of up to 12.41 W/(m K). Most notably, the problem of liquid metal overflow has been effectively resolved, rendering it highly applicable in the field of thermal management within the electronics industry.

Graphical abstract

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利用液态金属二相结构改善热界面材料的热学、机械和绝缘特性

镓基液态金属具有很高的热导率，因此在界面传热方面具有重要的研究价值。然而，其极高的流动性在与散热器直接接触时经常会造成泄漏和腐蚀风险。本文提出了一种由液态金属增强的双相连续结构的高性能导热垫。由液态金属连接的镀镍铜颗粒确保了热传导性能，而硅橡胶则提供了柔软性和强度。利用传统聚合物出色的加工性和绝缘性，它们可作为阻挡层，避免液态金属溢出。研究结果表明，这种复合材料具有良好的绝缘性能、机械特性和高达 12.41 W/(m K) 的导热系数。最值得注意的是，液态金属溢出的问题已得到有效解决，使其在电子工业的热管理领域具有很高的适用性。

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

Journal of Materials Science 工程技术-材料科学：综合

CiteScore

7.90

自引率

4.40%

发文量

1297

审稿时长

2.4 months

期刊介绍： The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.