Cs0.32WO3 nanoparticles may be used as heat insulating particles for the preparation of transparent heat-insulating coatings, and thus be applied to automotive glass to form a layer of thermal insulation film with good heat insulation effect. And thus such thin film may achieve the purpose of energy conservation and environmental protection. It is well known that although metal coated glass can provide good heat insulation effect, its visible light transmittance is low. If such glass is used in a car, it hinders the driver's line of sight and directly affects traffic safety.
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In addition, high visible light reflectivity can cause serious "light pollution" and endanger people's living environment. Coating with a material that is selective to the spectrum, and the heat-reflecting film can be selectively reflected by the spectrum, but the expensive equipment and complicated preparation process make the cost and difficulties of the heat-reflecting glass prepared by this method greatly increased. Experts say that cesium tungsten bronze particles of high heat insulation performance may be applied as a dingal material to prepare transparent thermal insulation coating to solve these problems, which is of great significance for energy conservation and environmental protection.