
Tungsten acid may be applied for the production of ceramic microsphere, which has the characteristics of excellent spectral selectivity and stability. Therefore, the visible light transmittance of this type of ceramic microsphere is more than 80%, and the near-infrared shielding rate is 90% or above. It means that the heat insulation effect of this kind of ceramic material is excellent, which may save energy consumption of 20-30% when it is applied in building glass. At present, for thermal insulation, nano…