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.
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According to the results, experts analyzed the Cs0.33WO3 coating, which uses PVA and PVP as film-forming materials to find that such coating has the highest visible light transmittance, but the PVA adhesion is very poor, and the PVP is not water resistant. So, both PVA and PVP are not suitable to be used as a film-forming substance for transparent heat-insulating coatings. PVB has a good transmittance in the visible light range with poor adhesion. Polyurethane, water-based acrylic emulsion and water-based fluorocarbon resin have excellent coating adhesion and resistance, and the near-infrared shielding rate of the coating with polyurethane as a film-forming substance is achieved. 82%, but their visible light transmittance is relatively low.
