级联异孔纳米复合材料用于热适应性被动辐射冷却
Weiming Tang1,2, Yaohui Zhan3, Jingrun Yang2
1CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|July 30, 2024
概括
一种新的异孔纳米复合材料薄膜 (HENF) 提供先进的被动辐射冷却. 这种材料有效地散热热量,并管理广泛范围内的设备中的温度波动.
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:
- 被动辐射冷却是一种节能散热技术.
- 现有的材料在环境下冷却和处理热量的积累方面存在局限性.
- 需要一种能适应广泛温度应用的被动热调节.
研究的目的:
- 开发一种新的异孔纳米复合材料薄膜 (HENF) 用于热适应辐射冷却.
- 提高电子设备的散热和热管理能力.
主要方法:
- 用多阶段散射制造异孔纳米复合材料薄膜 (HENFs).
- 光学属性的表征,包括发射率和反射率.
- 频谱管理和冷却效率的理论分析.
- 评估机械性能,相位过渡和环境适应性.
主要成果:
- 高ENF具有高发射率 (96.5%在8-13μm) 和反射率 (97.3%在0.3-2.5μm).
- 实现了超高的冷却功率114W m-2.2.
- 通过异孔结构和级联散射效应证明了优越的频谱管理.
- HENF具有高机械强度,相位过渡特性和环境适应性.
结论:
- 与传统材料相比,HENF提供了优越的辐射冷却性能.
- 该材料有效地将散热和吸收相结合,用于热积累管理.
- 热适应性HENF显示出在广泛的温度范围内的设备表面热调节的巨大潜力.
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