核心外复合纳米纤维具有耐高温,疏水性和透气性,用于有效的白天被动辐射冷却
Hong Fan1, Kefan Wang1, Yangjian Ding1
1College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Soochow Innovation Consortium for Intelligent Fibers and Wearable Technologies, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, 688 Moye Road, Suzhou, 215006, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|August 28, 2024
概括
研究人员开发了一种新的核心外纳米纤维膜,用于高效的辐射冷却. 这种先进的材料在白天实现了显著的冷却,并为各种应用提供了增强的热稳定性和紫外线保护.
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:
- 辐射冷却提供无能散热,但在性能和多功能性方面面临挑战.
- 现有的技术与薄膜厚度和异型光反射作斗争,以获得最佳的冷却.
研究的目的:
- 使用核心外复合纳米纤维设计和制造一种高效,多功能辐射冷却材料.
- 通过打破对称性的设计方法解决当前辐射冷却技术的局限性.
主要方法:
- 使用PVDF@PEI核心外复合材料制造超合规表面异构型多孔纳米纤维膜.
- 使用溶剂诱导相分离 (EIPS) 反向旋转和自组装 (EISA/EIAA) 与同轴静电旋转 (ES).
主要成果:
- 在白天达到8°C的冷却温度.
- 证明了特殊的热稳定性 (高达210°C),高水性 (126°接触角度) 和>99%的紫外线保护.
- 观察到光倍增效应,量子效率增加0.6%,具有良好的透气性.
结论:
- 开发的PVDF@PEI纳米纤维膜代表了辐射冷却材料的重大进步.
- 该材料的多功能性和性能为可穿戴设备和先进材料应用开辟了新的途径.
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