How to prepare cesium tungsten bronze into a new type of environmentally friendly high-tech thermal insulation product - transparent nano heat-insulation film. Firstly, the cesium tungsten bronze nano powder should be made into cesium tungsten bronze nano slurry, and then the cesium tungsten bronze nano slurry is added to an acrylic emulsion, and coated on the surface of the PET film to form a heat-insulation film.
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The UV-VIS spectrum of PET film containing cesium tungsten bronze nano powder is shown as above. It can be seen from the figure that the transmittance at 950 nm, which represents the heat shielding rate of the film, is 9.2%, that is, the near-infrared shielding rate at this band is 90.8%, and the visible light transmittance at 550 nm, which represents the transparency of the film, is 71%. In other words, the transparent nano heat-insulation film of cesium tungsten bronze meets the industry's requirements for high-quality transparent thermal insulation films.
