Solvent-free epoxy heavy-duty anticorrosive coating and preparation method thereof

The invention relates to the field of anticorrosive coatings, in particular to a solvent-free epoxy heavy-duty anticorrosive coating and a preparation method thereof. The solvent-free epoxy heavy-dutyanticorrosive coating comprises a component A and a component B; the component A comprises 100 parts of a solvent-free epoxy resin, 8-16 parts of a active diluent, 70-115 parts of a pigment and filler, 1.5-2.6 parts of a coupling agent, 1.5-2.6 parts of a dispersing agent, and 0.8-1.3 parts of a thixotropic agent; and the component B is a curing agent, and the mass ratio of the component B to theliquid epoxy resin in the component A is (1.5:1)-(3.5:1). The solid content of the heavy-duty anticorrosive coating is 98% or more, and the coating is an environment-friendly coating; the coating contains only a very small amount of a volatile organic solvent, so that only a small amount of shrinkage cavities and pinholes are formed after the coating is cured, and the compactness of the coating effectively increases the b