含有定向微通道的聚乙烯纤维用于被动辐射冷却
Mengxia Sun1, Fei Peng1, Shanshan Xu1
1School of Materials Science and Engineering, Key Laboratory of Material Processing and Mold (Ministry of Education), National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450000, P. R. China. gqzheng@zzu.edu.cn.
Materials horizons
|February 5, 2024
概括
研究人员开发了一种新方法,用于制造带有微通道的聚乙烯纤维,用于被动辐射冷却 (PRC). 这种环保面料可以实现优越的冷却功率和降低温度,而无需能源消耗.
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:
- 无源辐射冷却 (PRC) 提供无能热管理,对于降低能源消耗至关重要.
- 开发有效和可扩展的方法来制造中国材料,特别是聚合物纤维,仍然是一个挑战.
研究的目的:
- 开发一种简单,连续,大规模和环保的方法来生产具有辐射冷却特性的聚合物纤维.
- 研究含有定向微通道 (PFCDM) 的制造聚乙烯纤维的被动辐射冷却性能.
主要方法:
- 通过融挤出和水浸出制造PFCDM.
- 光学属性的表征 (太阳光反射率和中红外辐射率).
- 评估被动辐射冷却性能,包括冷却功率和温度下降.
主要成果:
- PFCDM面料具有高的阳光反射率 (93.6%) 和中红外辐射率 (93.9%).
- 在同类材料中实现了最高报告的冷却功率 (104.285 W m-2) 和温度下降 (27.71 °C).
- 证明了良好的自我清洁性能,随着时间的推移保持冷却效率.
结论:
- 拟议的方法为生产高性能PRC聚合物纤维提供了一个可扩展和环保的途径.
- PFCDM织物显示出在节能热管理中的应用有很大的潜力.
- 这项工作扩大了热塑性聚烯在辐射冷却技术中的使用.
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