Cesium tungsten oxide particles may be prepared into a transparent heat insulation coating and thus be applied to heat insulating window glass in the form of heat insulating film. Among them, cesium tungsten oxide powder used is also known as cesium tungsten bronze nanoparticles or cesium-doped tungsten bronze nano particles.
Some experts said that polyurethane molecules are well-arranged with strong intermolecular force, high strength and wear resistance so that polyurethane is a good film-forming material. It has also been reported in the literature that the obtained transparent heat-insulating coating material prepared by using water-based polyurethane as a film-forming material has excellent heat insulating property and high visible light transmittance.
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Some experts use nano cesium tungsten bronze particles as heat-insulating particles, and water-based polyurethane as a film-forming resin to prepare transparent thermal insulation coating. And the coating is sprayed on the glass window. The results showed that the visible light transmittance of such glass is 75%, and the near-infrared shielding rate is as high as 90%, which can reduce indoor temperature by 5-7°C.
