可调节的正方形3D混合连续碳网,用于高效的双向导热传导
Huitao Yu1, Lianqiang Peng1, Can Chen1
1School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, People's Republic of China.
Nano-micro letters
|May 17, 2024
概括
一个新的3D混合碳网络 (VSCG) 通过将垂直对齐的碳纳米管和石墨烯薄膜结合起来来增强热接口材料 (TIM). 这种结构显著提高了先进的热管理应用的界面传热效率.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 热力工程是热力工程中的一个.
背景情况:
- 垂直导向的碳结构对高性能热接口材料 (TIM) 是有前途的.
- 在这些结构中提高界面传热效率仍然是一个重大挑战.
研究的目的:
- 为了提高 TIM 的性能,开发一个正三维混合碳网络 (VSCG).
- 为了优化基于VSCG的复合材料的界面相互作用和导热性.
主要方法:
- 通过在水平定向石墨烯薄膜 (HOGF) 上沉积垂直对齐的碳纳米管 (VACNTs) 来制造VSCG.
- 通过化策略优化界面交互.
- 集成VSCG与聚二甲基 (PDMS) 形成VSCG/PDMS复合物.
主要成果:
- 实现了最高的内平面和透平面导热率,分别为113.61和24.37 W m-1 K-1.
- 由于高接触面积的HOGF和VACNT压缩性,证明了低的热电阻.
- 与最先进的热相比,面接热传递效率提高了71.3%.
结论:
- 这种VSCG/PDMS复合材料具有优异的3D导热性能.
- 新的结构设计为高性能TIM提供了一条道路,具有高热导电性和低接触电阻.
- 这种方法解决了先进电子和热管理的界面传热过程中的关键需求.
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