Tungsten oxide for preparing water-based glass thermal insulation coating is selected from high-purity tungsten oxide nano powder - a new type of nano heat insulation medium. Some experts have developed robust super hydrophobic tungsten oxide coating with a water contact angle of 155° for photochromism via a facile and substrate-independent route.
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According to the report, after scratch test on both a single and two orthogonal directions, the tungsten oxide coating still exhibited super hydrophobic behavior, indicating excellent mechanical robustness. It is worth mentioning that the super hydrophobic tungsten oxide coatings showed the reversible convert of photochromism of WO3 induced by alternating UV and visible light irradiation. Besides that, the tungsten oxide coating remained super hydrophobicity after UV irradiation for 36 h, showing excellent UV durability. In addition, the coating showed good resistance to acidic droplets. The coating exhibited excellent self-cleaning behavior due to its high water contact angle and low rolling angle. In a word, water-based glass thermal insulation coating of tungsten oxide is a promising approach for various substrates.
