耐用且机械坚固的超疏水辐射冷却涂层
Durable and mechanically robust superhydrophobic radiative cooling coating
中文简介
被动辐射冷却 (PRC) 提供了一种很有前途的策略,它通过反射阳光并通过大气窗口辐射热量来降低能耗。尽管在高效辐射冷却方面取得了广泛的进展,但它仍然面临阻碍其实际实施的几个挑战,例如易受污染、易受机械损伤影响以及抗老化和耐腐蚀性差。在此,我们报道了一种具有纳米球 (SHPo-ME) 的坚固超疏水多孔涂层,用于高效的全天被动辐射冷却,它由甲基丙烯酸甲酯 (MMA) 和乙烯二甲基丙烯酸酯 (EDMA) 热聚合而成。由于纳米小球结构的充分散射和聚合物中化学键的拉伸振动,SHPo-ME 涂层表现出优异的太阳反射率 (97.6%) 和长波红外发射率 (98.3%),在 820 W⋅m-2 的太阳强度下实现了 8.4°C 的低于环境冷却,夜间实现了 5.8°C 的低温冷却。此外,互连的纳米球增加了表面粗糙度,使表面表现出显着的超疏水性,接触角高达 165°,滑动角降低到 2.4°。重要的是,坚固的 SHPo-ME
英文摘要(原文)
Passive radiative cooling (PRC) presents a promising strategy for reducing energy consumption by reflecting sunlight and radiating heat through atmospheric windows. Although extensive progresses have been achieved in efficient radiative cooling, it still faces several challenges that hinder its practical implementation, such as susceptibility to contamination, vulnerability to mechanical damage, and
题录(GB/T 7714)
Meng X, Chen Z, Qian C, 等. Durable and mechanically robust superhydrophobic radiative cooling coating[J]. Chemical Engineering Journal, 2023, 478: 147341. DOI: 10.1016/j.cej.2023.147341.
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