Styrene-acrylic emulsion as well as preparation method and application thereof

The invention belongs to the technical field of building coatings, and relates to a styrene-acrylic emulsion, which is prepared from the following ingredients in parts by mass: 1 to 40 parts of styrene, 1 to 30 parts of butyl acrylate, 0.1 to 1 part of acid monomers, 0.01 to 1 part of acrylamide, 0.01 to 1 part of film-forming solvents, 0.01 to 1 part of cross-linking agents, 0.1 to 2 parts of anionic emulsifiers, 0.1 to 2 parts of nonionic emulsifiers, 0.01 to 0.5 part of oxidizing agents and 0.01 to 0.5 part of reducing agents. 0.01 to 1 part of an initiator, 0.01 to 0.5 part of a pH buffer agent, 0.1 to 1 part of a neutralizer, 0.02 to 1 part of a defoaming agent, 0.02 to 1 part of a preservative and 44 to 56 parts of water. The invention also provides a preparation method of the styrene-acrylic emulsion and an application of the styrene-acrylic emulsion in an interior wall coating, the interior wall coating prepared from the styrene-acrylic emulsion does not need a solvent, and the coating has excellent s