Multifunctional outer wall multicolor paint and preparation method thereof

The invention discloses a multifunctional outer wall multicolor coating and a preparation method and application thereof. The coating comprises the following components in parts by weight: 50-65 parts of sand-containing base paint, 15-25 parts of continuous phase emulsion and 15-25 parts of aqueous solution containing protective glue A. The sand-containing base paint contains expanded microspheres. By adding the expanded microspheres into the coating system, the expanded microspheres are uniformly dispersed in the coating system so that the density of the sand-containing color points in the coating can be reduced, and the stability of the color points in the protective glue and the continuous phase is good. In addition, due to the addition of the expanded microspheres, the coating becomes fluffy, and the heat insulation and heat preservation effects of the coating are improved. Furthermore, the expanded microspheres have good compatibility with common inelastic emulsion, the interaction is enhanced, the flexi