Water-based environment-friendly container coating and preparation method thereof

The invention discloses a water-based environment-friendly container coating which comprises a primer and a finish paint, and the primer comprises a modified water-based epoxy zinc-rich primer and a modified water-based vinylidene chloride primer; the finish paint is waterborne polyurethane modified acrylic finish paint; the mass ratio of the modified waterborne epoxy zinc-rich primer to the modified waterborne vinylidene chloride primer is (2-3): 1. The silane coupling agent modified kaolin and the hexagonal boron nitride are creatively used in the modified waterborne epoxy zinc-rich primer, the silane coupling agent modified kaolin is used in the modified waterborne vinylidene chloride primer of a supporting system, and the hexagonal boron nitride is used in the waterborne polyurethane modified acrylic finish paint of the supporting system. The obtained coating is very excellent in water resistance, alkali resistance, salt fog resistance, artificial aging resistance and salt water resistance. 本发明公开一种水性环保型集装