Nano Ammonium Metatungstate Applied for Transparent Thermal Insulation Nanopowder

The reason why nano ammonium metatungstate is called transparent thermal insulation nanopowder is because the final heat insulating material of cesium tungsten bronze nano particles prepared by such raw material has high transparency, that is, high visible light transmittance (higher than 70%). And these thermal insulating materials also have a lower infrared light transmittance, i.e., a higher infrared blocking rate. In this regard, let's take a look at the calculation range of some parameters.

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The visible light transmittance and the infrared light transmittance (intensity of the spectral intensity * solar intensity distribution) are integrated values for the wavelength. The calculation range is based on the spectral range defined by IS09050, in conjunction with the detection limits of the instrument:

1.0 The visible light transmittance is calculated from 380nm to 780nm;

2.0 The infrared light transmittance is calculated in the range of 780-2000nm;

3.0 Infrared light shielding rate = 100% - infrared light transmittance, that is, the percentage of infrared light that cannot pass through the transparent thermal insulation film.

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