High transparency and insulation- Cesium tungsten bronze insulation materia

Cesium tungsten bronze (CsxWO3) has been discovered as a new material with near-infrared shielding and thermal insulation properties, and has begun to be applied in the market. CsxWO3 film can shield near-infrared light with wavelengths greater than 1100 nm. After coating the glass surface with CsxWO3 film, its near-infrared shielding and thermal insulation properties increase with the increase of cesium content in CsxWO3. Among them, the glass coated with CsxWO3 film has the best thermal insulation performance, with a thermal insulation temperature difference of up to 13.5 ℃ compared to blank glass. Therefore, it has better near-infrared shielding performance and is widely used as a smart window in the fields of building and automotive glass insulation.

Polyvinyl Butyral (PVB) is a product of the condensation of polyvinyl alcohol and butyral under acid catalysis. Has good flexibility, low glass transition temperature, high tensile strength and impact resistance. PVB has excellent transparency, good solubility, and good light resistance, water resistance, heat resistance, cold resistance, and film-forming properties. It has high adhesion to materials such as glass and metal (especially aluminum). Therefore, it has been widely used in the manufacturing of laminated safety glass, adhesives, ceramic paper, aluminum foil, electrical materials, fiberglass products, fabric treatment agents, and other fields, becoming an indispensable synthetic resin material.

The thin film produced by PVB is used as a sandwich material for making safety glass, which has good transparency and high impact strength, and is widely used in the aviation and automotive fields. Ordinary PVB film has no thermal insulation effect in building glass or functional glass. Insulation materials need to be added to make glass more widely used.

The most common insulation materials are tin antimony oxide (ATO), zinc aluminum oxide (AZO), and indium tin oxide (ITO). There are certain limitations in terms of insulation, transparency, compatibility, and market acceptance. Cesium tungsten bronze insulation material can precisely solve the limitations of these materials and achieve high infrared insulation.

The cesium tungsten bronze dispersion developed by the kpolychem team has a thermal insulation rate of over 90%, and different addition amounts can achieve different thermal insulation effects. The highest thermal insulation rate can reach 100%, with a visible light transmittance of over 80% and a haze of less than 0.6. The addition method is simple, just follow the original production process.

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