Graphene modified water-based epoxy heavy-duty anti-corrosion coating and preparation method and application thereof

The invention discloses a graphene modified water-based epoxy heavy-duty anti-corrosion coating and a preparation method and application thereof. The graphene modified water-based epoxy heavy-duty anti-corrosion coating comprises the following raw materials in percentage by weight: 30-40% of water-based epoxy resin emulsion, 6-13% of graphene, 7-10% of Diazolidinyl urea, 6-10% of Amino Trimethylene Phosphonic Acid, 3-6% of polymaleic anhydride, 2-4% of nanoscale titanium dioxide, 0.1-1% of a curing agent and the balance of water. The graphene modified water-based epoxy heavy-duty anti-corrosion coating has good salt fog resistance, adhesive force, tensile strength, bending strength, compressive strength and bending elastic modulus, and is a heavy-duty anticorrosive coating which can be better used in marine environments. The construction can be carried out by spraying, and the construction efficiency is higher. The raw material components are simple, the preparation process is simplified, and the production a