Ammonium Metatungstate Applied for Transparent Thermal Insulation Material

Ammonium metatungstate may be used to prepare transparent thermal insulation material of cesium tungsten bronze nanoparticles. The obtained material may be used for building window glass heat insulation with radiation-proof property. Some experts have proposed a method of glass heat insulation and radiation protection, wherein the near-infrared short-wave shielding nano material used is ammonium metatungstate particles.

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A glass heat insulation treatment method includes the following steps:

1.0 Put clean glass in a clean and confined space with inlet and outlet air system, temperature controlled at 25-35°C, humidity controlled below 80%;

2.0 Prepare a spray agent containing the following components: inorganic nano ceramic resin 30-50%, near-infrared short-wave nano shielding material 5-20% (ammonium metatungstate powder), near-infrared long-wave nano shielding material 5-15%, ultraviolet nano shielding material 3-10%, leveling agent 0.2-0.5%, curing agent 0.2-1%, solvent balance.

3.0 The spray agent is placed in a watering can and the spray parameters are set to: air pressure of 1.0-3.5bar; flow rate of 10-30ml/min; width of 40-100%; spray distance of 10-30cm; spray speed of 20-50cm/s;

4.0 Spray the coating evenly onto the glass with a spray gun and then allow the glass to settle until the coating solidifies.

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