Novel daytime passive radiative cooling ceramic with self-cleaning properties and its manufacturing process

Abstract

This invention pertains to the field of refrigeration materials, unveiling a novel ceramic designed for daytime passive radiative cooling endowed with a self-cleaning capability, along with its preparation method. The architectural design of this cooling ceramic incorporates a base layer composed of a porous composite ceramic, characterized by its intricate structure of closed pores arranged according to a varied grading of sizes, potentially enhanced with an additional protective layer. The method of preparation involves integrating a polymer solution with metal oxides and micron-sized hollow glass microspheres to craft a malleable slurry. This slurry is then shaped within a mold, compacted under pressure to form a preliminary structure, which is subsequently dried and sintered, culminating in the production of a porous composite ceramic specifically engineered for radiative cooling.

Dependencies are inferred from the claim text.