The invention relates to a high-
solid surface-tolerant
epoxy zinc-rich primer. The primer is prepared from a component A and a component B according to a weight ratio of (16-20):1; the component A comprises the following components in parts by weight: 5-9 parts of liquid phenolic
epoxy resin, 6-15 parts of E20
solid epoxy resin, 0.5-1.5 parts of an active
diluent, 0.1-0.3 part of a dispersing agent, 70-80 parts of main
rust-proof
pigment, 2-6 parts of chemical anti-
rust pigment, 1.5-2.5 parts of an anti-
settling agent and 3-4 parts of an organic mixed
solvent; and the component B comprises thefollowing components in parts by weight: 1.5-2.5 parts of a
polyamide curing agent, 2-3 parts of a
Mannich base curing agent, 0.3-0.6 part of a
silane coupling agent and 0.2-0.6 part of an organic mixed
solvent. The invention also relates to a preparation method of the primer and a
coating film. The primer is high in
solid content and low in VOC content, is resistant to
corrosion, has a long effect, has good
adhesive force and salt
fog resistance, and is particularly suitable for repairing and
maintaining equipment in industries such as
chemical industry, thermoelectricity, machinery and thelike.