一种基于水性聚氨的吸湿层次的元结构,用于日间被动辐射冷却
Zhuwang Shao1, Hang Tian1, Wei Wei1
1State Key Laboratory of Advanced Fiber Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
ACS applied materials & interfaces
|August 15, 2025
概括
本研究介绍了一种用于个人热管理 (PTM) 的新型层次辐射冷却元结构. 这种先进的织品在干燥和出汗的条件下提供显著的冷却,增强舒适性和节能.
科学领域:
- 材料科学 材料科学 材料科学
- 织工程 织工程 织工程
- 热管理 热管理
背景情况:
- 个人热管理 (PTM) 对于节能和散热至关重要.
- 目前的PTM技术在平衡冷却性能,可穿戴性和大规模生产方面面临着挑战.
研究的目的:
- 为先进的PTM开发一个可扩展的,分层的辐射冷却元结构.
- 为解决PTM织品冷却性能,舒适性和可制造性的整合挑战.
主要方法:
- 使用渐变孔结构和WPU/BaSO4复合材料制造一个层次化的元结构.
- 太阳反射率和大气窗口辐射率的表征.
- 评估双模式 (干/湿) 制冷性能和户外人体温度降低.
主要成果:
- 实现了91.8%的太阳反射率和95.2%的大气窗口辐射率.
- 在干燥条件下,温度下降12.8°C,在出汗条件下下降21.3°C.
- 在户外测试中,与棉织物相比,皮肤温度降低了3°C.
结论:
- 层次化的元结构提供了有效的双模式冷却,提高了个人热舒适度.
- 这种创新的织品为设计下一代PTM应用提供了新的途径,具有节能和可定制美学潜力.
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