应用铝基垂直排列碳纳米管森林复合材料进行散热。

Applying Aluminum⁻Vertically-Aligned Carbon Nanotube Forests Composites for Heat Dissipation.

作者信息

Li Yan-Rui, Su Chih-Chung, Chang Shuo-Hung

机构信息

Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan.

出版信息

Nanomaterials (Basel). 2019 May 17;9(5):758. doi: 10.3390/nano9050758.

DOI:10.3390/nano9050758

PMID:31108887

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6567284/

Abstract

Vertically-aligned carbon nanotube forests (VACNTs) with excellent axial heat dissipation properties were formed on aluminum foil to dissipate heat. In addition, the heat dissipation efficiency of aluminum-VACNTs composites in this work was compared with that of commercially available mainstream thermal sheets under the same natural cooling conditions. Chemical vapor deposition (CVD) was employed as a synthesis method using a three-segment high-temperature furnace. Subsequently, the temperature changes in a heating body with the aluminum-VACNTs composites was measured over time subject to natural cooling. In addition, the performance was compared with copper and pyrolytic graphite sheets. The experimental results revealed that the heat dissipation efficiency of the flexible aluminum-VACNTs composites was higher than that of clean aluminum foil, a copper sheet, and a pyrolytic graphite sheet by up to 56%, 40%, and 20%, respectively. Moreover, this work also verified the height of the carbon nanotube (CNT) did not influence the heat dissipation efficiency, indicating that the time cost of synthesis could be reduced.

摘要

在铝箔上形成具有优异轴向散热性能的垂直排列碳纳米管森林（VACNTs）以散热。此外，在相同自然冷却条件下，将本工作中铝 - VACNTs复合材料的散热效率与市售主流散热片的散热效率进行了比较。采用化学气相沉积（CVD）法，使用三段式高温炉进行合成。随后，在自然冷却条件下，测量了带有铝 - VACNTs复合材料的加热体随时间的温度变化。此外，还将其性能与铜片和热解石墨片进行了比较。实验结果表明，柔性铝 - VACNTs复合材料的散热效率分别比干净的铝箔、铜片和热解石墨片高56%、40%和20%。此外，本工作还验证了碳纳米管（CNT）的高度不影响散热效率，这表明可以降低合成的时间成本。