Cesium tungsten oxide for near infrared shielding material is a type of blue powder with hexagonal phase, an average particle size of 1270nm and a specific surface area of 28.47m2/g. The above values were mainly measured by dispersing the cesium tungsten oxide powder in an aqueous solution of polyvinyl alcohol with a concentration of 1g/10ml.
As the title suggests, cesium tungsten oxide powder may be used to prepare a new type of near infrared blocking material. So, what about its near-infrared shielding performance? Some experts have tested the near-infrared shielding performance of cesium tungsten bronze with an ultraviolet-visible spectrophotometer. It is found that the architectural glass coated with cesium tungsten oxide transparent heat-insulating coating has the highest light transmittance at a wavelength of 785nm, which is 50%; while at the wavelength of 1100nm in the near-infrared region, such coating has a minimum light transmittance of 45%, and the transmittance at 1100nm in the near-infrared region is lowered by VT (%) = 5% as compared with the highest transmittance in the visible region.
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