Cs0.33WO3 can effectively shield the energy in the near-infrared and far-infrared regions, and can block the ultraviolet rays. Therefore, it can be used to prepare transparent thermal insulation material such as building glass heat insulation film. And therefore these building glasses not only have superior thermal insulation properties, but have high transparency, good weather resistance and stability. In addition, the new environmentally-friendly transparent glass film does not have a halo effect, so it cannot interfere with the user's view of the outside scenery.
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Experts say that from a professional point of view, the film prepared from the unheat-treated Cs0.33WO3 powder has a low transmittance in the visible range. As the heat treatment temperature increases, the visible light transmittance of the film rises rapidly, and the maximum value is at the heat treatment temperature of 700°C. When the temperature continues to raise, the visible light transmittance decreases. This is because the excessive heat treatment temperature causes the Cs0.33WO3 particles to grow too large, and the agglomeration between the particles is serious, which affects the visible light transmission of the material itself.
