Low-surface treatment heavy anti-corrosion coating as well as preparation method and application thereof

The invention belongs to the technical field of coatings, and discloses a low-surface treatment heavy anti-corrosion coating as well as a preparation method and an application thereof. The coating is prepared from the following raw materials: a component A: first film-forming resin, second film-forming resin, an epoxy diluent, hydrocarbon resin, titanium dioxide, mineral powder, an anti-rust pigment, inorganic matter powder, a coupling agent, a pigment and an auxiliary agent; and the component B comprises a first curing agent, a second curing agent, a modifier, an accelerant and an adhesion promoter. The coating disclosed by the invention takes the bio-based resin as a main film-forming substance, has higher environmental protection performance, is low in base surface treatment requirement, can be coated in a state with water, moisture and rust, can independently form a coating, can also be compounded with weather-resistant finish paint, and is long in anti-corrosion time and good in adhesive force and salt s