0D/2D联合兴奋剂网络增强电子设备热管理辐射冷却薄膜的热导电性
1MOE Key Laboratory of Thermo-Fluid Science and Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
ACS applied materials & interfaces
|July 9, 2024
概括
这项研究引入了一种新的多形态配合策略,用于先进的辐射冷却材料. 新的复合膜增强了导热性和辐射性质,可以在没有能源输入的情况下高效地冷却电子设备.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 热力学是一种热力学.
背景情况:
- 辐射冷却提供了无能源的电子设备冷却.
- 当前材料的低导热率限制了它们的有效性.
- 提高热和辐射性能对于高性能冷却至关重要.
研究的目的:
- 开发一种多形状的配合策略,以提高导热率和辐射性能.
- 研究零维和二维结构对冷却性能的协作效应.
- 为高效的电子设备冷却提供新的解决方案.
主要方法:
- 静电自组装用于制备hBN涂层的空心SiO2颗粒.
- 将颗粒与hBN血小板混合并将其合到聚合物基质中.
- 使用离散双极近似理论来阐明和优化机制.
主要成果:
- 实现了高反射率 (94.9%) 和辐射率 (91.2%).
- 通过热导网,增强热导率至1.32 W m-1 K-1 .
- 证明了显著的温度降低 (从58.8到31.3°C) 和高净冷却功率 (102.5W m-2).
结论:
- 多形状配合策略有效地提高了辐射冷却性能.
- 复合膜与低导电性的基板相比,具有更高的导热性.
- 这种方法为高效率的被动电子设备冷却提供了有希望的途径.
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