Li Xiaoyan, Ji Yating, Fan Zhuizhui, Du Peibo, Xu Bi, Cai Zaisheng
National Engineering Research Center for Dyeing and Finishing of Textiles, Key Lab of Science & Technology of Eco-Textile, College of Chemistry and Chemical Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China.
Small. 2023 Jul;19(29):e2300297. doi: 10.1002/smll.202300297. Epub 2023 Apr 7.
Developing textiles with passive thermal management is an effective strategy to maintain the human body healthy as well as decrease energy consumption. Personal thermal management (PTM) textiles with engineered constituent element and fabric structure have been developed, however the comfortability and robustness of these textiles remains a challenge due to the complexity of passive thermal-moisture management. Here a metafabric with asymmetrical stitching treble weave based on woven structure design and yarn functionalization is developed, in which the thermal radiation regulation and moisture-wicking can be achieved simultaneously throughout the dual-mode metafabric due to its optically regulated property, multi-branched through-porous structure and surface wetting difference. With simply flipping, the metafabric enables high solar reflectivity (87.6%) and IR emissivity (94%) in the cooling mode, and a low IR emissivity of 41.3% in the heating mode. When overheating and sweating, the cooling capacity reaches to ≈9 °C owing to the synergistic effect of radiation and evaporation. Moreover, the tensile strengths of the metafabric are 46.18 MPa (warp direction) and 37.59 MPa (weft direction), respectively. This work provides a facile strategy to fabricate multi-functional integrated metafabrics with much flexibility and thus has great potential for thermal management applications and sustainable energy.
开发具有被动热管理功能的纺织品是维持人体健康以及降低能源消耗的有效策略。具有工程化组成元素和织物结构的个人热管理（PTM）纺织品已被开发出来，然而，由于被动热湿管理的复杂性，这些纺织品的舒适性和耐用性仍然是一个挑战。在此，基于机织结构设计和纱线功能化开发了一种具有不对称缝线三层编织的超织物，由于其光学调节特性、多分支通孔结构和表面润湿性差异，在这种双模式超织物中可以同时实现热辐射调节和吸湿排汗功能。只需翻转，该超织物在冷却模式下就能实现高太阳反射率（87.6%）和红外发射率（94%），在加热模式下红外发射率低至41.3%。当过热出汗时，由于辐射和蒸发的协同作用，冷却能力可达约9℃。此外，该超织物的拉伸强度分别为46.18MPa（经向）和37.59MPa（纬向）。这项工作提供了一种简便的策略来制造具有很大灵活性的多功能集成超织物，因此在热管理应用和可持续能源方面具有巨大潜力。
