Low-zinc heavy-duty anti-corrosion coating based on multi-walled carbon nanotubes and preparation method of low-zinc heavy-duty anti-corrosion coating

The invention discloses a low-zinc heavy-duty anti-corrosion coating based on multi-walled carbon nanotubes and a preparation method of the low-zinc heavy-duty anti-corrosion coating. The coating comprises a component A and a component B, the component A is composed of an epoxy resin coating, and the component B is composed of a curing agent. The component A is characterized by being prepared from the following components in percentage by mass: 4 to 10 parts of n-butyl alcohol solvent, 20 to 30 parts of self-developed ultra-dispersed carbon nanotube conductive paste, 15 to 30 parts of epoxy resin, 2 to 8 parts of silicate, 30 to 50 parts of zinc powder, 5 to 40 parts of silica fume filler and 0.5 to 2 parts of organic bentonite; the component B is a polyamide curing agent; wherein the mixing mass ratio of the component A to the component B is (5-10): 1. The excellent characteristics of the multi-walled carbon nanotubes are utilized to form a stable conductive network, zinc particles in the coating are activat