Tungsten oxide can be applied for manufacturing thermal insulation coating.
Since the IR radiation into heat will be surprisingly in high efficiency, and this tungsten oxide material may be applied at very low concentrations, the color itself may be acceptable in most applications.
Preparation of Tungsten Oxide/ Solvent type Polyurethane Composite Film
1. 10g of WO3 powder, 90g of MEK and 150g of zirconium balls were ball milled. After milling for a period of time, a WO3/MEK suspension was obtained when the average particle size was about 500nm.
2. Four different ratios of the WO3/MEK suspension (0.25wt%, 0.5wt%, 1.0wt%, 1.5wt%) and the solvent type polyurethane were mixed and degassed by using the planetary vacuum mixer, and four types of WO3/DPU slurries with different ratios were obtained.
3. Coat with an automatic coater to obtain the WO3/DPU film.
Then, tensile test was performed using Universal Strength Tester HT-9101; Thickness of the film was measured using a digital electronic thickness meter; And the UV-Vis Spectrometer was used to do the near-infrared shielding test.
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