Long-acting antibacterial and antiviral building coating and preparation method thereof

The invention discloses a long-acting antibacterial and antiviral building coating and a preparation method thereof. The building coating is prepared by mixing an inorganic antibacterial material, a cationic resin emulsion, a pigment, an inorganic filler, deionized water, a dispersing agent, a defoaming agent, a thickening agent and a coalescing agent. The inorganic antibacterial material is used as a functional filler, and through the synergistic effect of multiple components, the antibacterial and antiviral coating has safe, efficient and broad-spectrum antibacterial and antiviral effects; the cationic resin emulsion is used as a film-forming substance, so that the antibacterial and antiviral building coating has long-acting and rapid antibacterial and antiviral characteristics, and the obtained antibacterial and antiviral building coating is small in addition amount of an antibacterial agent, can maintain the antibacterial effect for a long time, meets the requirements of safety, environmental protection a