Bottom surface integrated aqueous enamel as well as preparation method and use method thereof

The invention relates to the technical field of coatings, in particular to a bottom surface integrated aqueous enamel as well as a preparation method and a use method thereof. The bottom surface integrated aqueous enamel comprises the following raw material components in parts by mass: 40-70 parts of acrylic emulsion, 4-6 parts of covering polymer emulsion, 4-6 parts of an auxiliary agent, 4-6 parts of a coalescing agent, 10-20 parts of an inorganic filler, 14-20 parts of water, wherein the auxiliary agent comprises the following components in parts by mass: 0.5-0.8 part of a dispersing agent,0.3-0.7 part of a defoaming agent, 0.2-0.5 part of a pH regulator, 0.5-0.8 part of an anti-flash rust agent, 1.0-1.5 parts of a thickening agent, 0.7-1.2 parts of a leveling agent and 0.1-0.2 part ofa bactericide. The bottom surface integrated aqueous enamel provided by the invention does not need to be added with anti-rust pigment, and a paint film has good salt fog resistance, water resistanceand weather resistance, as