多孔聚氨酯基辐射冷却膜,具有优异的机械和阻燃性能
Porous Polyurethane-Based Radiative Cooling Film with Excellent Mechanical and Flame-Retardant Properties
中文简介
被动式日间辐射冷却是一种无电冷却技术,可辐射阳光并将热量辐射到寒冷的空间。然而,传统的辐射冷却材料面临着许多挑战,如机械性能差或不阻燃等。成功设计并构建了一种具有优异力学性能的阻燃多孔辐射冷却聚氨酯和醋酸纤维素复合薄膜。通过低沸点溶剂挥发和高沸点溶剂置换实现多孔结构。所得薄膜具有高太阳反射率(98.2%)、高红外发射率(94.3%)和优异的机械性能(13.2 MPa)。此外,在阳光辐射为 900 W m-2 的室外环境中,它可以有效地冷却 15.6 °C。此外,良好的阻燃性和色彩美学性能有利于其作为建筑材料的应用,以实现高效和节能。因此,这项工作为复杂环境中的辐射冷却提供了一种方法。
英文摘要(原文)
Passive daytime radiative cooling is an electricity-free cooling technology that radiates sunlight and radiates heat to cold space. However, traditional radiation cooling materials are facing many challenges, such as poor mechanical properties or non-flame retardancy. Herein, a flame-retardant porous radiative cooling polyurethane and cellulose acetate composite film with excellent mechanical properties
题录(GB/T 7714)
Wang B, Tao F, Liu L, 等. Porous Polyurethane-Based Radiative Cooling Film with Excellent Mechanical and Flame-Retardant Properties[J]. ACS Applied Polymer Materials, 2025, 7(20): 13609-13617. DOI: 10.1021/acsapm.5c02435.
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