Composite air purification coating material and preparation method thereof

The invention relates to a novel composite air purification coating material and a preparation method thereof and belongs to the technical field of environment-friendly functional coating and air purification. Aerogel and photocatalysts are used as adsorption/photocatalytic functional fillers in the coating, prepared adsorption/photocatalyst dispersion liquid and acrylic emulsion or fluorocarbon emulsion are mixed, and an appropriate quantity of dispersing agents, coalescing agents, defoaming agents and the like are added so as to obtain the novel composite air purification coating. Compared with air purification coatings in prior art, the novel composite air purification coating is efficient and permanent in air purification effect. The test result of adsorption/photocatalytic degradation of formaldehyde shows that the formaldehyde concentration is decreased from 0.39mg/m3 to 0.04 to 0.05mg/m3 after 5 to 6 hours of adsorption/photocatalytic degradation, and the adsorption/photocatalytic degradation rate reaches to 79.49% to 89.74%.