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Enhanced thermal conductivity of alumina and carbon fibre filled composites by 3-D printing
Thermochimica Acta ( IF 3.5 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.tca.2020.178649
Jiacheng Ji , Sum-Wai Chiang , Mengjing Liu , Xin Liang , Jia Li , Lin Gan , Yanbing He , Baohua Li , Feiyu Kang , Hongda Du

Abstract In this work, we report a fabrication of oriented carbon fibres/alumina/silicon rubber composites by 3-D printing. The 3-D printed composites possess higher thermal conductivity up to 7.36 W/m K at 12 vol% CFs and 30 vol% alumina loading than that of cast composites (4.22 W/m K) at the same components. The orientation caused by 3-D printing produces a synergism of the thermal conductivity enhancement for CFs and alumina hybrid filled composites. We attribute the synergism to the decrease of thermal interface resistance, while the reduction of thermal interface resistance has a bigger effect on thermal conductivity of CASR composites. This study provides a novel way to obtain thermal conductive composites with orientation, which has a great significance for the development of high-performance thermal conductive products.

中文翻译:

通过 3D 打印增强氧化铝和碳纤维填充复合材料的导热性

摘要 在这项工作中,我们报告了通过 3-D 打印制造定向碳纤维/氧化铝/硅橡胶复合材料。与相同组分的铸造复合材料 (4.22 W/m K) 相比,3-D 打印复合材料在 12 vol% CFs 和 30 vol% 氧化铝负载下具有更高的热导率,高达 7.36 W/m K。由 3-D 打印引起的取向产生了 CFs 和氧化铝混合填充复合材料的导热性增强的协同作用。我们将协同作用归因于界面热阻的降低,而界面热阻的降低对 CASR 复合材料的热导率影响更大。该研究为获得具有取向性的导热复合材料提供了一种新途径,对开发高性能导热产品具有重要意义。
更新日期:2020-08-01
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