聚丙烯酸酯多孔复合材料的原位聚合制备及其辐射降温性能研究  

Preparation of Porous Polyacrylate Composites by In-Situ Polymerization and Their Radiative Cooling Properties

作　　者：刘松 张超 Liu Song;Zhang Chao(College of Materials Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学材料科学与工程学院,上海201620

出　　处：《山东化工》2024年第18期40-43,48,共5页Shandong Chemical Industry

摘　　要：辐射降温作为一种无能耗和环保的冷却方法,在降低能耗等方面具有很大潜力。大多数多孔结构辐射降温材料设计均着重于提高材料的选择性发射性能从而提高辐射降温性能,却忽略了材料内部多孔结构优化导致制冷器的降温效果不佳。为此,本文通过电场原位聚合方法,将丙烯酸酯单体与二维纳米填料进行复合构建多孔结构高分子复合辐射制冷材料。所制备的聚丙烯酸酯多孔复合材料表现出较高的太阳反射率(95.5%)和高的中红外热发射率(96.3%)。该高分子多孔复合材料作为辐射降温材料在阳光直射下使用时,可实现自身温度比环境温度低8℃的降温效果,平均冷却功率为89.0 W·m^(-2)。Radiative cooling,a non-energy-consuming and environmentally friendly cooling method,holds significant promise for reducing energy consumption.While many designs of porous structure radiative cooling materials focus on enhancing selective emission properties to improve radiative cooling performance,they often overlook optimizing the internal porous structure,leading to suboptimal cooling efficiency.To address this problem,this study introduces a novel approach where acrylate monomer and two-dimensional nanofillers are combined to fabricate porous polymer composite radiative cooling materials through in-situ polymerization under an electric field.The resulting porous polyacrylate composites exhibit exceptional solar reflectivity(95.5%)and high mid-infrared thermal emissivity(96.3%).When utilized as a radiative cooling material under direct sunlight,these porous polymer composite materials can achieve a cooling effect 8℃lower than the ambient temperature with an average cooling power of 89.0 W·m^(-2).

关 键 词：高分子复合材料 原位聚合 多孔结构 辐射降温 

分 类 号：TQ201[化学工程—有机化工] TB324[一般工业技术—材料科学与工程] TB64