静电纺丝技术制备辐射制冷纤维材料的研究进展

Research progress on radiative cooling fibrous materials prepared by electrospinning technology

  • 摘要: 在全球能源消耗加剧和气候变暖带来的严峻挑战下,辐射制冷作为一种无需外部能源输入的被动式降温技术,通过将物体自身热量以红外辐射形式高效耗散至寒冷的宇宙空间,展现出巨大潜力。将这种原理应用于日常可穿戴的纺织纤维材料,实现个人降温提高热舒适性,成为一个极具前景的研究方向。静电纺丝技术凭借其能够制备具有高比表面积、高孔隙率及可控微纳米结构纳米纤维的独特优势,成为构筑高性能辐射制冷纤维材料的一种有效制备方法。本综述聚焦于利用静电纺丝技术制备辐射制冷纤维材料的最新研究进展。首先,简要描述了辐射制冷的基本原理,探讨了静电纺丝赋予纳米纤维的独特结构,可以使其有效调控材料的红外光学特性。在此基础上,系统梳理了基于静电纺丝技术的聚合物与聚合物/功能填料复合材料的设计、制备及性能方面的研究进展。进一步地,针对实际应用需求,讨论了静电纺辐射制冷纤维材料在紫外防护、可控彩色化、自清洁以及动态辐射调控等多功能化方面的研究进展,同时探讨了辐射制冷纤维材料规模化制备的相关研究。最后,分析了当前该领域在材料性能优化和实际应用等方面面临的挑战,并展望了未来发展方向,为推动先进静电纺辐射制冷纤维材料的研发与应用提供参考。

     

    Abstract: Under the severe challenges brought by intensifying global energy consumption and warming, radiative cooling, as a passive cooling technology that requires no external energy input, shows great potential by efficiently dissipating an object's own heat to the cold outer space in the form of infrared radiation. Applying this principle to daily wearable textile fibrous materials to achieve personal cooling and improve thermal comfort has become a very promising research direction. Electrospinning technology has become an effective preparation method for constructing high-performance radiative cooling fibrous materials, due to its unique advantage of being able to prepare nanofibers with high specific surface area, high porosity, and controllable micro-nano structures. This review focuses on the latest research progress using electrospinning technology to prepare radiative cooling fibrous materials. First, it briefly describes the basic principles of radiative cooling and discusses how the unique structure that electrospinning imparts to nanofibers can allow them to effectively regulate the material's infrared optical properties. On this basis, the research progress in the design, preparation and properties of polymers and polymer/functional filler composites based on electrospinning was systematically combed. Furthermore, based on practical application needs, the research progress of electrospun radiative cooling fiber materials in multifunctional aspects such as UV protection, controllable coloration, self-cleaning, and dynamic radiation regulation is discussed. Meanwhile, relevant research on the large-scale preparation of radiative cooling fibrous materials is also explored. Finally, the current challenges faced in the field of material performance optimization and practical applications are analyzed, and future development directions are prospected, aiming to provide references for promoting the research, development, and application of advanced electrospun radiative cooling fiber materials.

     

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