Special nano zirconium dioxide composite powder material for architectural outer wall insulation paint

The invention relates to a special nano zirconium dioxide composite powder material for architectural outer wall insulation paint and a preparation method thereof, belonging to the field of manufacturing of metal oxide ultrastructures. The material is characterized by comprising the following chemical components in percentage by mass: 70-90% of zirconium dioxide (ZrO2) and 10-30% of titanium dioxide (TiO2). The preparation method comprises the following steps: continuously spraying an atomized ammonium bicarbonate water solution into an anhydrous ethanol solution (which is prepared by respectively preparing zirconium oxychloride (ZrOCl2.8H2O) and tetrabutyl titanate and mixing evenly) in a stirring state to react to obtain a mixed sol, carrying out azeotropic dehydration on the mixed sol by using butanol as an azeotrope former to obtain a dry material, and calcining to obtain the special nano zirconium dioxide composite powder material for architectural outer wall reflective insulation paint, of which the par