Environment-friendly interior wall formaldehyde-removing styrene-acrylic emulsion, preparation method and coating thereof

The invention discloses an environment-friendly interior wall formaldehyde removal styrene-acrylic emulsion as well as a preparation method and a coating thereof. The emulsion is prepared from the following components in parts by weight: 100 parts of deionized water, 30-35 parts of styrene, 40-45 parts of acrylate, 10-15 parts of methacrylate, 1.5-3 parts of alkyl acrylic acid, 1-5 parts of an acrylic acid functional monomer, 0.5-5 parts of an aldehyde removal functional monomer, 0.1-0.5 part of a functional crosslinking monomer, 1-5 parts of an emulsifier, 0.5-3 parts of an initiator, 0.05-1part of a buffer agent, 0.1-0.5 part of a residual monomer treatment initiator and 1-4 parts of a rapid aldehyde removal aid. The preparation method is simple in technological operation and good in controllability. The emulsion prepared through the preparation method is stable in particle size, good in performance and low in cost, integration of rapid formaldehyde removal and long-term formaldehyde removal of an interior