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超薄和高效率的被动白天辐射冷却涂层通过聚合物-粒子联合设计
Yiwei Fu1, Yuxu Wang1, Yitong Ding1
1Laboratory of Advanced Optical Polymer and Manufacturing Technology, College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, China.
Small (Weinheim an der Bergstrasse, Germany)
|January 25, 2026
概括
这项研究提出了一种超薄的聚合物颗粒涂层,用于被动白天辐射冷却. 先进的涂层实现了高太阳反射率和红外辐射率,显著降低温度,为无人机和建筑物节省能源.
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:
- 基于聚合物的被动日间辐射冷却 (PDRC) 涂层通过反射太阳辐射和发射红外热来为全球变暖提供解决方案.
- 目前的PDRC涂层需要相当大的厚度来实现高性能,增加成本和重量.
- 在薄涂层中优化太阳反射率和中红外辐射率仍然是一个挑战.
研究的目的:
- 开发具有卓越光学性能的超薄PDRC涂层.
- 为增强辐射冷却利用聚合物-颗粒联合设计战略.
- 调查这些涂料在无人飞行器 (UAV) 热管理和建筑节能方面的应用.
主要方法:
- 采用聚合物-颗粒联合设计策略,选择具有在大气透明窗口 (ATW) 中共振的功能组的材料.
- 洛伦兹-米散射理论被用来优化粒子大小,以增强ATW吸收和太阳光谱散射.
- 评估了光学特性 (太阳反射率和MIR发射率) 和热性能.
主要成果:
- 开发的涂层实现了高太阳反射率93.8%和中红外辐射率97.1%的高太阳反射率.
- 涂层厚度减少到商业涂层的40%.
- 该涂层显示,无人机表面的温度降低了8.1°C,模拟室内环境的温度降低了5.7°C,在不同地点每年节省了大量的能源.
结论:
- 拟议的聚合物颗粒联合设计策略使得超薄,高性能辐射冷却涂层的制造成为可能.
- 开发的涂层显示了无人机热管理的巨大潜力.
- 这项技术为低度和中度地区的建筑物提供了显著的节能优势.
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