Preparation of UV-Curable Nano-WO3Coating and Its Infrared Shielding Properties

Abstract

Nano-WO3 particles are expected to find use in new shielding materials because of their significant absorption of near-infrared light in the 1400–1600 nm and 1900–2200 nm bands and high transmittance of visible light. In this study, WO3 was ground and dispersed using high-energy ball-milling to prepare a nano-WO3 dispersion using BYK331 as the dispersant and ethanol as the solvent. The prepared nano-WO3 dispersion was added to a photo-curing system and cured using UV irradiation to form films. The cured films were characterized using FT-IR, SEM, XRD, and TGA. The results showed that the nano-WO3 powder was evenly dispersed in the coating. The infrared blocking rate of the film continuously improved and the visible light transmission rate continuously decreased with increasing amounts of nano-WO3.For the film containing 6 wt%nano-WO3, the infrared blocking rate of the coating is 90%, the visible light transmittance is 70%, the hardness of the coating is 3B, and the adhesion is 3H. The thermal stability of the coating is also improved.

NIR shielding performance and spectral selectivity of PVB interlayer films loaded with composite fillers derived from CsWO3 coupled with Au nanorods

“…In this regard, various types of particles are known to exhibit NIR shielding performance, including indium tin oxide (ITO), 8 antimony tin oxide (ATO), [9][10][11][12][13][14][15] tungsten trioxide (WO 3 ), 16 and vanadium dioxide (VO 2 ). 17 Noteworthily, since the raw materials used to produce ITO are derived from rare metals, the price of ITO is considerable.…”

Comparative study of ZnO and WO3 thin films grown by pulsed laser deposition at similar substrate temperatures

“…Additionally, WO3 films find application in UV curing processes, where their electrochromic properties contribute to the development of smart coatings. These coatings can change color or transparency in response to external stimuli, providing novel solutions in fields such as architecture and automotive industries 15 .…”

Preparation, Characterization, and Properties of UV-Curable Coating Doped with Nano-SiO2

“…To achieve high hydrophobicity and scratch resistance, inorganic and organic hybrid UV-curable coatings containing nano-SiO 2 have become a research subject. In our previous study, inorganic and organic hybrid UV-curable coatings for different nano-metal oxides were investigated [39,40]. In this paper, the high-energy ball-milling method was used to crush and grind nanoparticles, which were then modified using a dispersant.…”