Nano-Cesium Tungsten Oxide

The important role of nano-cesium tungsten oxide in energy-saving

In the hot summer, the sun shines through the car glass, which makes the drivers and passengers unbearable, accelerates the aging of the vehicle interior, and greatly increases fuel consumption, increases emissions, and damages the environment. Similarly, a large proportion of building energy consumption is lost through glass doors and windows. The application and promotion of green energy-saving technologies are now a global concern. Therefore, a transparent and heat-insulating glass heat-insulating agent is needed to reduce energy consumption.

Nano cesium tungsten oxide/cesium tungsten bronze (VK-CSW50) is an inorganic nanomaterial with good near-infrared and ultraviolet absorption effects. It has uniform particles, good dispersion, environmental friendliness, strong selective light transmission ability, good near-infrared shielding performance, and high transparency, standing out from other traditional transparent insulation materials. It is a new functional material with a strong absorption function in the near-infrared region (wavelength 800-1200nm) and high transmittance in the visible light region (wavelength 380-780nm).

Chinese name: Cesium tungsten oxide/cesium tungsten bronze (VK-CSW50)

English name: Cesium Tungsten Bronze

CAS number: 189619-69-0

Molecular formula: Cs0.33WO3

Molecular weight: 276

Appearance: dark blue powder

At the same time, as a new automotive glass heat insulator, nanometer cesium tungsten oxide (VK-CSW50) has the best near-infrared absorption characteristics. Usually, adding 2 g per square meter of coating can achieve an infrared blocking rate of more than 90% at 950 nm. At the same time, a visible light transmittance of more than 70% is achieved.

Nano-cesium tungsten oxide (VK-CSW50) heat insulating agent has been widely recognized by many glass manufacturers. This heat insulating agent is used in the production of coated insulating glass, coated insulating glass, and laminated insulating glass, and can significantly improve Human body comfort and significant energy savings.

Nano cesium tungsten oxide (VK-CSW50) can be said to be a transparent thermal insulation nanopowder. Cesium tungsten bronze nano powder is not really "transparent", but a dark blue powder. "Transparent" mainly refers to the fact that the thermal insulation dispersion, thermal insulation film, and thermal insulation coating prepared with cesium tungsten bronze all show high transparency.

Experts say that the production of thermal insulation coatings requires film-forming materials, such as acrylic resin. Acrylic resin has excellent color, good light, and weather resistance, and is resistant to ultraviolet radiation without decomposition or yellowing. It retains light and color and can maintain its original color for a long time. Acrylic resin is often used in combination with other resins as a film-forming material for transparent thermal insulation coatings. Some experts use polyurethane acrylate water-based resin as a film-forming material and nano-cesium tungsten bronze (VK-CSW50) as thermal insulation particles to prepare transparent thermal insulation coatings and apply them to architectural glass. Studies have shown that the transmittance of the coating in the visible light region is about 75%.