Cesium tungsten (Nano Cesium Tungsten Oxide, Cs0.33WO3) near-infrared absorber is an ultrafine nano-particle obtained by using cesium tungsten as the main metal oxide through high-temperature sintering and extraction, and has the property of absorbing red and near-infrared rays. Cesium tungsten near-infrared absorber (CAS No.: 189619-69-0) is made of cesium tungsten bronze powder, which is an inorganic nano-material that absorbs near-infrared, with uniform particles and good dispersion. The absorption wavelength in the near infrared region is 800-1200nm, and it has high transmittance in the visible light region (wavelength 380-780nm). The visible light transmittance of the film prepared by using cesium tungsten bronze powder paste is over 71%, and the infrared light (800-2500nm) transmittance is over 13.5%. Nano-cesium tungsten bronze powder is dispersed into a stable nano-slurry and added to the coating, which can be made into a transparent heat-insulating coating with near-infrared blocking.
The dispersion solution is divided into suspension and emulsion. The cesium tungsten dispersion is to uniformly and stably disperse the cesium tungsten bronze powder particles in the liquid phase. The solid particles are called the dispersed phase, and the liquid phase is called the continuous phase. The infrared absorption peak of cesium tungsten near-infrared absorber is at 1200-1700nm, the absorption rate reaches 95%, and the absorption rate at 950nm-2000nm reaches more than 90%. The liquid made of cesium tungsten near-infrared absorber by dispersion process has good dispersibility, high transparency and low haze. At the same time, it is resistant to high temperature, does not oxidize, does not degrade, and has good weather resistance. Cesium tungsten near-infrared absorber dispersion is an excellent functional material for heat shielding, light filtering, anti-counterfeiting, and heat absorption.
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