自适应和大面积喷涂热管理涂层,以节省能源
Peng Zhou1, Guangyang Jiang2, Yuyan Wang3
1State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu, 610065, China.
Nature communications
|April 22, 2025
概括
这项研究引入了一种用于被动热管理的新型自适应性涂层. 该材料在加热和冷却之间自主切换,防止过度冷却,并为各种应用提供显著的温度调节.
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:
- 单模辐射冷却材料可能会导致过冷.
- 现有的双模式材料需要外部刺激或能量来切换.
- 大面积的自适应热管理是非常理想的.
研究的目的:
- 开发一种自主自适应的双模式涂层,用于被动热管理.
- 为了克服人工刺激驱动的切换材料的局限性.
- 为了实现各种应用的动态辐射冷却.
主要方法:
- 用组装的微型异构结构制造涂层.
- 采用多阶段的落灯散射来进行热控制.
- 开发具有可控制的结合区域的染色分子.
- 大面积喷工艺用于制造可热切换织物.
主要成果:
- 该涂层在炎热条件下达到92%的太阳反射率和93%的辐射率.
- 60%的可见光光学调制可以防止在寒冷条件下过度冷却.
- 与白色样本相比,可热切换的织物在寒冷条件下显示2.5°C的升温,在炎热条件下显示8.7°C的降温.
结论:
- 开发的涂层提供了自主,无能源的热适应.
- 微型异构结构设计可实现高效的光散射和光学调制.
- 这项工作证明了动态辐射冷却应用的大规模制造的可行性.
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