Nanoporous polyethylene microfibres for large-scale radiative cooling fabric

IF 25.7 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Nature Sustainability Pub Date : 2018-02-09 DOI:10.1038/s41893-018-0023-2

Yucan Peng, Jun Chen, Alex Y. Song, Peter B. Catrysse, Po-Chun Hsu, Lili Cai, Bofei Liu, Yangying Zhu, Guangmin Zhou, David S. Wu, Hye Ryoung Lee, Shanhui Fan, Yi Cui

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引用次数: 300

Abstract

Global warming and energy crises severely limit the ability of human civilization to develop along a sustainable path. Increasing renewable energy sources and decreasing energy consumption are fundamental steps to achieve sustainability. Technological innovations that allow energy-saving behaviour can support sustainable development pathways. Energy-saving fabrics with a superior cooling effect and satisfactory wearability properties provide a novel way of saving the energy used by indoor cooling systems. Here, we report the large-scale extrusion of uniform and continuous nanoporous polyethylene (nanoPE) microfibres with cotton-like softness for industrial fabric production. The nanopores embedded in the fibre effectively scatter visible light to make it opaque without compromising the mid-infrared transparency. Moreover, using industrial machines, the nanoPE microfibres are utilized to mass produce fabrics. Compared with commercial cotton fabric of the same thickness, the nanoPE fabric exhibits a great cooling power, lowering the human skin temperature by 2.3 °C, which corresponds to a greater than 20% saving on indoor cooling energy. Besides the superior cooling effect, the nanoPE fabric also displays impressive wearability and durability. As a result, nanoPE microfibres represent basic building blocks to revolutionize fabrics for human body cooling and pave an innovative way to sustainable energy. Energy-saving innovations, such as fabrics with cooling effects, contribute to sustainability. This study reports the large-scale extrusion of uniform and continuous nanoporous polyethylene microfibres with cotton-like softness for wearable fabrics. The fabric can lower human skin temperature by 2.3 °C with over 20% savings on indoor cooling energy.

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用于大规模辐射冷却织物的纳米多孔聚乙烯微纤维

全球变暖和能源危机严重限制了人类文明沿着可持续道路发展的能力。增加可再生能源和减少能源消耗是实现可持续发展的基本步骤。节能行为的技术创新可以支持可持续发展道路。节能织物具有卓越的冷却效果和令人满意的耐磨性能，为节省室内冷却系统的能耗提供了一种新方法。在此，我们报告了用于工业织物生产的均匀连续的纳米多孔聚乙烯（nanoPE）微纤维的大规模挤出工艺。嵌入纤维中的纳米孔能有效散射可见光，使其不透明，同时又不影响中红外线的透明度。此外，利用工业机器，纳米聚乙烯超细纤维可用于大规模生产织物。与相同厚度的商用棉织物相比，纳米聚乙烯织物具有很强的降温能力，可将人体皮肤温度降低 2.3 °C，相当于节省 20% 以上的室内制冷能源。除了卓越的降温效果，纳米聚乙烯织物还具有出色的耐磨性和耐用性。因此，纳米聚乙烯微纤维是彻底改变人体降温织物的基本构件，并为可持续能源铺平了一条创新之路。具有降温效果的织物等节能创新有助于实现可持续发展。这项研究报告了大规模挤出均匀连续的纳米多孔聚乙烯微纤维，这种微纤维具有棉花般的柔软度，可用于制作可穿戴织物。这种织物可将人体皮肤温度降低 2.3 °C，节省 20% 以上的室内制冷能源。

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来源期刊

Nature Sustainability Energy-Renewable Energy, Sustainability and the Environment

CiteScore

41.90

自引率

1.10%

发文量

159

期刊介绍： Nature Sustainability aims to facilitate cross-disciplinary dialogues and bring together research fields that contribute to understanding how we organize our lives in a finite world and the impacts of our actions. Nature Sustainability will not only publish fundamental research but also significant investigations into policies and solutions for ensuring human well-being now and in the future.Its ultimate goal is to address the greatest challenges of our time.