双不对称的选择性接口增强的聚 (乳酸) 基纳米织物,具有汗水管理和可切换的辐射冷却和隔热
Shuangjiang Feng1, Lei Yao2, Xi Chen1
1School of Chemistry and Chemical Engineering, Southeast University, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211100, Jiangsu Province, China.
Journal of colloid and interface science
|June 9, 2023
概括
这项研究引入了一种新的Janus型纳米织物,用于全天候个人热调节. 该材料提供按需冷却和加热,并增强了汗水管理,促进健康和能源可持续性.
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:
- 个人热调节受到包括太阳辐射和湿度波动在内的可变环境的挑战.
- 现有的织物在有效的冷却,加热和汗水管理方面同时扎.
- 开发先进的织品对于保持个人健康和能源可持续性至关重要.
研究的目的:
- 设计和开发一种基于聚乳酸 (PLA) 的双不对称,光学和湿感选择性的Janus型纳米织物.
- 为了实现按需的辐射冷却和加热,以有效的汗水传输实现全天候个人热调节.
- 为了研究材料在净冷却,冷却优势,防汗和热屏蔽方面的性能.
主要方法:
- 将空心TiO2颗粒纳入PLA纳米织物,以增强光学散射和红外辐射.
- 半嵌入式银纳米线 (AgNWs) 的集成用于热辐射反射和水透性.
- 织物翻转以在冷却和加热功能之间切换.
主要成果:
- 在>1500W/m2太阳能发电下实现了~12.8°C的净冷却效应,具有高红外发射率 (~91.2%) 和散射 (~99%).
- 与棉织物相比,具有5°C的冷却优势,同时具有耐汗性.
- 通过体温反射 (>65%) 和可见的水透性提供~7°C的热屏蔽.
结论:
- 开发的Janus型纳米织物通过简单的接口翻转提供了协同的冷却-降低汗水和温暖-抵抗汗水的能力.
- 这种多功能被动个人热管理织品在个人健康维护和能源可持续性方面具有重大潜力.
- 这种材料代表了解决传统面料对全天候热舒适度的局限性的突破.
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