| abstract |
The invention relates to the technical field of water-based coatings, in particular to a preparation method of a water-based acrylic-modified epoxy resin and a coating thereof. The specific technical scheme is as follows: a method for preparing a water-based acrylic acid-modified epoxy resin, wherein an acid-modified epoxy resin solution A is obtained by heating and mixing an epoxy resin, a hydrophobic solvent and an acidic modified substance; and adding unsaturated Fatty acid, heating and refluxing for dehydration reaction, then adding a hydrophilic solvent and mixing to obtain epoxy ester resin solution B; adding a monomer containing an initiator dropwise to the heated epoxy ester resin solution B to carry out free radical polymerization, and after the reaction is completed After cooling down, adding neutralizer and mixing, water-based acrylic-modified epoxy resin C is obtained; finally, water-based acrylic-modified epoxy resin C or its dispersion is mixed with phase change material, silica sol, graphene, etc. to make anti-corrosion Water-based paint with good effect and strong adhesion. The invention solves the problems of poor adhesion and anti-corrosion performance of acrylic paint in the prior art. |