Nano particle size cesium tungsten oxide, or nano particle size cesium tungsten bronze, may be used to prepare a thermal insulation coating. Some experts conducted performance tests on the obtained coating. And the tests include water resistance, alkali resistance, adhesion, drying time, and visible-near-infrared light transmittance.

Nano particle size cesium tungsten oxide is heat insulating nanoparticles that may be used to prepare near-infrared shielding material such as transparent heat-insulating coatings, and then be applied to architectural glass to achieve the purpose of saving energy and reducing room temperature.

Nano particle size cesium tungsten oxide, or nano grain size cesium tungsten bronze or nano Cs0.33WO3 particles, may be used to prepare a new type of transparent heat-insulating coating, so that it may be sprayed onto the architectural glass to obtain a transparent thermal insulation paper, i.e., heat insulation film. Based on epoxy resin, experts have prepared Cs0.33WO3 nano coating with a visible light transmittance of 75%. This coating not only has good optical properties, but also has thermal insulation properties.

Nano particle size cesium tungsten oxide may be used to prepare a thermal insulation film. And the obtained thermal insulation film can effectively reduce the solar thermal energy transmitted to the room through the glass. In other words, attaching a layer of heat insulation film of cesium tungsten bronze nanoparticles to the architectural glass can effectively control the amount of solar energy. Compared to un-filmed architectural glass, the coated glass blocks most of the heat from entering the room.