Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA.
E. L. Ginzton Laboratory, Department of Electrical Engineering, Stanford University, Stanford, CA, USA.
Nat Commun. 2021 Oct 21;12(1):6122. doi: 10.1038/s41467-021-26384-8.
Perspiration evaporation plays an indispensable role in human body heat dissipation. However, conventional textiles tend to focus on sweat removal and pay little attention to the basic thermoregulation function of sweat, showing limited evaporation ability and cooling efficiency in moderate/profuse perspiration scenarios. Here, we propose an integrated cooling (i-Cool) textile with unique functional structure design for personal perspiration management. By integrating heat conductive pathways and water transport channels decently, i-Cool exhibits enhanced evaporation ability and high sweat evaporative cooling efficiency, not merely liquid sweat wicking function. In the steady-state evaporation test, compared to cotton, up to over 100% reduction in water mass gain ratio, and 3 times higher skin power density increment for every unit of sweat evaporation are demonstrated. Besides, i-Cool shows about 3 °C cooling effect with greatly reduced sweat consumption than cotton in the artificial sweating skin test. The practical application feasibility of i-Cool design principles is well validated based on commercial fabrics. Owing to its exceptional personal perspiration management performance, we expect the i-Cool concept can provide promising design guidelines for next-generation perspiration management textiles.
排汗在人体散热中起着不可或缺的作用。然而，传统纺织品往往注重排汗功能，而对汗水的基本体温调节功能关注较少，在适度/大量出汗的情况下表现出有限的蒸发能力和冷却效率。在这里，我们提出了一种具有独特功能结构设计的集成冷却（i-Cool）纺织品，用于个人排汗管理。通过合理地集成热传导途径和水输送通道，i-Cool 表现出增强的蒸发能力和高的汗液蒸发冷却效率，而不仅仅是液体汗液的吸湿功能。在稳态蒸发测试中，与棉相比，水质量增益比降低了高达 100%以上，每单位汗液蒸发的皮肤功率密度增加了 3 倍。此外，在人工出汗皮肤测试中，i-Cool 比棉的冷却效果要好 3°C，且汗液消耗大大减少。基于商业面料，很好地验证了 i-Cool 设计原则的实际应用可行性。由于其出色的个人排汗管理性能，我们期望 i-Cool 概念可为下一代排汗管理纺织品提供有前途的设计指导。
