e-Polymers, Год журнала: 2024, Номер 24(1)

Опубликована: Янв. 1, 2024

Abstract To address the excessive energy consumption of building cooling, coverage passive radiation cooling materials on surface buildings can effectively save global refrigeration power resources and reduce greenhouse gas emissions generated by equipment. In this work, hydrophobic fabric with three functional layers (i.e., top polydimethylsiloxane [PDMS] film layer for solar emissivity, middle polymethylmethacrylate [PMMA] reflectivity, bottom cotton support) were prepared. This material optimized thickness PDMS (1.5 mm) PMMA (3.5 have a rich uneven filament structure ideal internal bonding structure, which enabled 94% reflectivity 93.4% atmospheric window emissivity (8–14 μm). Top composite was (a contact angle 117°) allowed rolling water droplets to remove most dust. Moreover, these composites presented an excellent 7.7–15.0°C in outdoor real test. For medium-sized houses, roof covered expected emission CO 2 17% every year. The findings work indicated that prepared three-layered great potentials thermal storage buildings.

Язык: Английский