The invention relates to the technical field of acrylic emulsions, and particularly relates to a self-crosslinking acrylic
emulsion and a preparation method thereof. The self-crosslinking acrylic
emulsion is prepared from the following raw materials in parts by weight: a component A, namely 130-150 parts of crylic acid
solid resin, 350-450 parts of water and 40-60 parts of
ammonium hydroxide or monoethanolamine or
triethanolamine, a component B, namely 5-12 parts of an emulsifier and 15-25 parts of water, a component C, namely 1-3 parts of
persulfate and 5-12 parts of water, a component D 1, namely 85-95 parts of
methyl methacrylate and 70-80 parts of
ethyl acrylate, a component D 2, namely 85-95 parts of
methyl methacrylate and 70-80 parts of
ethyl acrylate, a component E, namely 0.8-1.5 parts of
persulfate and 5-15 parts of water, a component F, namely 5-12 parts of diacetone-acryloamide and 25-35 parts of water, and a component G, namely 2-5 parts of
adipic dihydrazide and 25-35 parts of water. The self-crosslinking acrylic
emulsion does not contain a toxic
solvent, so that the VOC content is low; and the self-crosslinking acrylic emulsion does not contain TDI and various
heavy metals, so that the self-crosslinking acrylic emulsion is environment-friendly and safe, has the advantages of relatively good
levelling property and film
surface smoothness, shows a bright effect after forming a film, and is free of a white scar or dusting when rubbed and kneaded.