Cesium tungstate nanopowder may be applied for preparing transparent thermal insulation nanopowder. What? Transparent？In fact, the obtained powder is blue-black, but becomes transparent when it is made into thermal insulation coating, film or dispersion. As you may have known the nano grain size cesium tungstate is a type of nano powder with outstanding near-infrared absorption and visible light transmission characteristics. In addition, cesium tungstate has been widely used in many industries, so its preparation is even more important.
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In this regard, some experts have pointed out the disadvantages of high equipment cost and low production efficiency caused by the high pressure reactor process. It is proposed to use tungsten chloride and cesium chloride as raw materials and oleic acid and oleylamine as solvent to obtain cesium tungstate nanoparticles at 300°C. Experts said that this method does not require special equipment for high temperature and high pressure, and the preparation process is simple and easy. However, the oleic acid and oleylamine are expensive, toluene and acetone used are toxic, the reaction concentration is extremely low, and the production efficiency is low, so the process also doesn’t have practical industrial value. In other words, intensive research should be conducted to find a preparation method that solves the above problems.
