Janus聚甲醛织物具有单向吸湿排汗和全天候被动辐射冷却功能
Janus polyoxymethylene fabric with unidirectional moisture transport and all-weather passive radiative cooling
中文简介
被动辐射冷却技术因其零能耗、零污染的特性,在个人热管理纺织品领域具有广阔的应用前景。然而,目前报道的辐射冷却纺织品大多采用疏水性纤维,这使得其在高温高湿环境下难以有效排汗。本文采用静电纺丝法,以聚甲醛(POM)/聚乙烯吡咯烷酮(PVP)/二氧化硅(SiO₂)亲水层和纯POM疏水层为结构,制备了一种新型的Janus型聚甲醛(POM)织物,该织物具有单向排湿和全天候被动辐射冷却性能。研究发现,PVP和纳米二氧化硅的引入不仅将太阳光反射率从94.8%提高到97.4%,还将红外(IR)发射率从81.7%提高到93.7%。特别是,Janus POM织物在全天候条件下均表现出高效的辐射冷却性能,白天可使环境温度降低近8.2℃,夜间可降低近2.5℃。此外,该织物具有优异的单向水分传输功能,能够克服重力将汗液从疏水层转移到亲水层。而且,与棉织物相比,其在模拟汗液皮肤上的水分蒸发时间缩短了35.3%;与纯POM织物相比,缩短了68
英文摘要(原文)
Passive radiative cooling has promising applications in the field of personal thermal management textiles due to its zero-energy consumption and zero pollution. Nevertheless, recently reported radiative cooling textiles are mostly made of hydrophobic fibers, which makes it difficult to expel perspiration in hot and humid environments. Here, a novel Janus polyoxymethylene (POM) fabric with unidirectional
题录(GB/T 7714)
Jiang X, Li Z, Guo B, 等. Janus polyoxymethylene fabric with unidirectional moisture transport and all-weather passive radiative cooling[J]. Journal of Materials Chemistry A, 2026, 14(12): 7083-7095. DOI: 10.1039/d5ta08555a.
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