Cs doped tungsten oxide powder may be applied for producing thermal insulation masterbatch, which has excellent property of blocking near-infrared light. As you may have known, the infrared light in the sunlight, especially the near-infrared light, has a significant thermal effect, which tends to cause the temperature to rise, resulting in an increase in temperature, such as, indoors or in the car.
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At present, the disclosed infrared shielding material generally refers to a type of dingal material that has a strong absorption or reflection of infrared light without affecting the transmission of visible light. Inorganic materials which have been reported to have strong infrared absorption or reflection properties mainly include cesium doped tungsten oxide (cesium tungsten bronze), ATO, ITO and LaB6. Among them, cesium doped tungsten oxide nano particles are deep blue compound, which has the best near-infrared blocking property. It is reported that nano grain size cesium tungsten bronze can block near-infrared light with a wavelength greater than 900nm, so that it is the most commonly used near-infrared shielding powder.
