/石墨烯热接口材料具有积极的温度依赖性
Wanwan Cai1, Yongkuan Lu1, Chenxi Wang1
1Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China.
ACS applied materials & interfaces
|June 24, 2024
概括
我们开发了具有增强导热性的石墨烯复合材料. 这些材料显示出更好的散热,为热接口材料提供了一个有前途的解决方案.
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:
- 石墨烯具有高的平面内导热性,使其适合用于热接口材料 (TIM).
- 石墨烯有限的透平面导热率阻碍了其在TIM中的应用.
- 开发提高透平面导热率的策略对于先进的TIM至关重要.
研究的目的:
- 开发一种简单的现场方法,用于制备基于石墨烯的复合材料,增强通过平面导热率.
- 研究这些新型复合材料的取决于温度的热性能.
- 探索这些复合材料作为优质散热材料的潜力.
主要方法:
- 采用一种in situ生长方法,将 (Al) 纳米颗粒加载到石墨烯纳米板块 (GNP) 上.
- 用激光闪光分析仪和差分扫描热量计测量了热扩散率和特定热容量.
- 通过平面导热率 (k) 在各种温度下进行了评估.
主要成果:
- 纳米颗粒有效地弥合了石墨烯纳米板块,显著增强了k.
- 在25°C时,1.3-Al/GNPs复合物实现了11.70 W·m−1·K−1的k.
- 观察到一种独特的积极温度依赖的k,在100°C时达到20.93 W·m−1·K−1.
结论:
- 开发的Al/GNPs复合材料具有卓越的传热性能.
- 增强的k和取决于温度的行为为基于石墨烯的高级TIM提供了一个有希望的途径.
- 这项研究为设计高性能热管理材料提供了宝贵的见解.
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