Cs Doped Tungsten Oxide Powder Applied for Thermal Insulation Film

Cs doped tungsten oxide powder may be used to produce thermal insulation film, which may effectively block ultraviolet rays and near-infrared rays. And the heat insulating film not only can isolate harmful ultraviolet rays, but also has the advantages of high light transmittance, high weather resistance, high energy-efficient performance, and the like.

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According to experts, the film of nano grain size Cs doped tungsten oxide is a new type of energy-saving thin film material, which has the thermal insulation performance of blocking near-infrared rays while maintaining high transmittance. The near-infrared shielding rate is 85-99%, which can adjust the transmittance of visible light. The visible light transmittance is 70-85%. And it also has a high-efficiency ultraviolet shielding effect. And the ultraviolet shielding rate is higher than 99.5%. Experts also said that the preparation of such functional film, including: ultraviolet and near-infrared blocking masterbatch, resin, light stabilizer components. The preparation method comprises the steps of: adding the above components and stirring uniformly through a high-speed mixer, conveying to a vacuum exhausting single-screw extruder, and the transparent heat insulation film is obtained after by kneading, venting, casting, transverse stretching, and cooling.

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