Preparation method of water-based acrylic epoxy resin emulsion

The invention discloses a preparation method of a water-based acrylic epoxy resin emulsion. The preparation method comprises the following steps: reacting a nonionic surfactant with epoxy resin to generate a nonionic surfactant containing an epoxy structure; the preparation method comprises the following steps: mixing a monomer, a nonionic surfactant containing an epoxy structure and a cosolvent to obtain a first dispersion liquid; the monomers comprise styrene and acrylic monomers; dispersing an anionic surfactant in water to obtain a second dispersion liquid; adding the first dispersion liquid into the second dispersion liquid under a stirring condition, selectively adding water, and dispersing to prepare a pre-emulsion; respectively dropwise adding the pre-emulsion and the initiator solution into the reactor under a stirring condition, and carrying out a miniemulsion polymerization reaction of a monomer; the acrylic epoxy resin emulsion prepared by the method is good in stability, the prepared insulating p