With the promotion and application of cesium tungsten bronze nanopowder in the field of transparent thermal insulating glass coating, more and more researchers have begun to pay attention to this multidingal nano material. Well, do you know how to prepare such a dingal material --- cesium tungsten bronze nano powder?
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Preparation of Cesium Tungsten Bronze Nanopowder for Transparent Thermal Insulating Glass Coating
400 kg of sorbitol was heated and dissolved in a jacketed reaction kettle, and tungstic acid and cesium sulfate were added. Among them, the mass ratio of tungstic acid and cesium sulfate is 1: 0.33, and the mass of sorbitol is three times the total mass of tungstic acid and cesium sulfate. After 30 minutes of high-speed stirring, pump them into a homogenizer for cycle homogenization. After 60 minutes, pump the product into a high pressure reactor that has been heated to 150 °C, and set the speed to 180 r/min. After the above materials are completely transferred to the reactor, the valves were closed, the temperature was gradually increased to 350 °C, maintaining for 600 minutes. And then the temperature was lowered to 150 °C, releasing the reaction product. After that, the deionized water was added thereto, and the material was driven into a filter press. Wash with deionized water and absolute ethanol until the sulfate content is less than 100 mg/kg and the ethanol content is more than 80%. Put the filter cake in a vacuum oven to dry, and then perform mechanical and airflow crushing to obtain dark blue cesium tungsten bronze nanopowder.
