使用SiO2/PHBV纤维膜与微纳米多阶段结构的高性能辐射冷却
Zhi-Jun Zhu1, Ziqi Li1, Xiaohong Wu1
1Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518055, P. R. China.
ACS applied materials & interfaces
|June 1, 2025
概括
这项研究介绍了一种新型的辐射冷却纤维膜,该纤维膜由可生物降解的聚3-基酸-co-3-基酸 (PHBV) 和SiO2纳米粒子制成. 这种先进的材料提供了高效的被动冷却,可用于可穿戴应用.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 可持续能源 可持续能源
背景情况:
- 辐射冷却为散热提供了一个可持续的,节能的解决方案.
- 开发用于被动冷却的先进材料对于减少能源消耗至关重要.
- 可生物降解的聚合物为先进材料制造提供了一个环保的替代方案.
研究的目的:
- 开发和描述一个先进的辐射冷却纤维膜.
- 将SiO2纳米粒子纳入可生物降解的聚合物矩阵,以提高冷却性能.
- 评估材料在可穿戴式冷却应用中的潜力.
主要方法:
- 使用电旋技术制造SiO2/PHBV纤维膜.
- 膜的微/纳米多级架构的表征.
- 测量光学特性 (太阳反射率,发射率) 和热性能 (冷却温度,冷却功率).
主要成果:
- 在大气窗口内,SiO2/PHBV膜具有较高的太阳反射率 (0.95) 和辐射率 (0.89).
- 达到环境温度下4.85°C的冷却温度,与皮肤相比的温度差为12.8°C.
- 证明了显著的冷却功率 (平均64.05W/m2,峰值91.75W/m2) 和出色的机械性能 (在断裂时延长151%).
结论:
- 开发的辐射冷却纤维膜是一种有前途的可持续技术.
- 它的高性能和适用于可穿戴应用的适用性需要进一步研究.
- 使用可生物降解PHBV为先进的冷却材料提供了一种环保的方法.
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