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