纳米ATO/PVB透明隔热涂料制备与性能研究

Preparation and properties of transparent nano-ATO/PVB thermal insulation coating

以聚乙烯醇缩丁醛（PVB）为成膜物质，纳米氧化锡锑（ATO）为颜填料，乙醇为溶剂，借助超声波分散技术制备了纳米ATO／PVB透明隔热涂料并涂覆于玻璃表面。讨论了ATO添加量和涂膜厚度对涂膜的透光性和隔热性的影响。结果表明：当颜基比为1：8，膜厚为75～100gm时，涂膜的透光隔热性能最好，可见光透过率可达87．04％，红外光阻隔率66．12％，平衡温差5～8℃，好于某市售汽车隔热膜。其耐水性、铅笔硬度和附着力等综合性能也较好。

A transparent nano-ATO/PVB thermal insulation coating was prepared with polyvinyl butyral （PVB） as binder, antimony-doped tin oxide （ATO） nanoparticles as pigment, and ethanol as solvent by ultrasonic dispersion, and then coated on glass. The effects of ATO amount and coating thickness on transmittance and thermal insulation property of the coating were discussed. The results showed that the coating obtained at a pigment-to-binder ratio of 1：8 with a thickness of75-100μm has the best transparence and thermal insulation performance with a visible light transmittance of 87.04%, an infrared blocking rate of 66.12% and an equilibrium temperature difference of 5-8℃, showing better performance than a commercial automotive heat-insulation film. It also presents a good comprehensive performance in water resistance, pencil hardness and adhesion strength.