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A Moisture-Wicking Passive Radiative Cooling Hierarchical Metafabric
ACS Nano ( IF 15.8 ) Pub Date : 2022-01-25 , DOI: 10.1021/acsnano.1c08227
Xiaoshuang Zhang 1 , Weifeng Yang 1 , Zhuwang Shao 1 , Yaogang Li 2 , Yun Su 3 , Qinghong Zhang 2 , Chengyi Hou 1 , Hongzhi Wang 1
Affiliation  

Developing functional textiles with a cooling effect is important for personal comfort in human life and activities. Although existing passive cooling fabrics exhibit promising cooling effects, they do not meet the thermal comfort requirements under many practical conditions. Here, we report a nanofiber membrane-based moisture-wicking passive cooling hierarchical metafabric that couples selective optical cooling and wick-evaporation cooling to achieve efficient temperature and moisture management. The hierarchical metafabric showed high sunlight reflectivity (99.16% in the 0.3–0.76 μm wavelength range and 88.60% in the 0.76–2.5 μm wavelength range), selective infrared emissivity (78.13% in the 8–13 μm wavelength range), and good moisture permeability owing to the optical properties of the material and hierarchical morphology design. Cooling performance experiments revealed that covering simulated skin with the hierarchical metafabric prevented overheating by 16.6 °C compared with traditional textiles, including a contribution from management of the humidity (∼8.2 °C). In addition to the personal thermal management ability, the hierarchical metafabric also showed good wearability.

中文翻译:

一种吸湿被动辐射冷却分层超织物

开发具有降温效果的功能性纺织品对于人类生活和活动中的个人舒适度非常重要。虽然现有的被动降温织物表现出良好的降温效果,但在许多实际条件下,它们并不能满足热舒适性要求。在这里,我们报告了一种基于纳米纤维膜的吸湿排汗被动冷却分层超织物,它结合了选择性光学冷却和灯芯蒸发冷却,以实现有效的温度和湿度管理。分层超织物表现出高阳光反射率(在 0.3-0.76 μm 波长范围内为 99.16%,在 0.76-2.5 μm 波长范围内为 88.60%)、选择性红外发射率(在 8-13 μm 波长范围内为 78.13%)和良好的水分由于材料的光学特性和分层形态设计,磁导率。冷却性能实验表明,与传统纺织品相比,用分层超织物覆盖模拟皮肤可防止过热 16.6°C,包括湿度管理(~8.2°C)的贡献。除了个人的热管理能力,层次化的超面料也表现出良好的耐磨性。
更新日期:2022-01-25
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