Ammonium metatungstate powder can be used to prepare nano-ceramic color master, which is a new type of heat insulating masterbatch. Specifically, it is necessary to prepare a violet tungsten oxide nanopowder by using ammonium metatungstate as a raw material, and then the obtained violet tungsten oxide nanoparticles is used to prepare a thermal insulation color master. The following is a preparation method of nano violet tungsten oxide proposed by experts, helping you understand the magical building heat insulation materials.
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Preparation of a violet tungsten oxide nano powder: dissolve 0.01mol of ammonium metatungstate, 0.36mol of ammonium nitrate, 0.1mol of urea in an appropriate amount of deionized water and stirred until they are completely dissolved. The mixture is heated at a constant temperature of 200°C. After the solution is evaporated to dryness, a vigorous redox reaction occurs in several tens of seconds, and a large amount of gas is released to generate violet tungsten oxide. The obtained violet tungsten oxide powder, with a shape of a nanoneedle and a rod, has a particle size of 30-150nm and a length of 0.5-10μm.
