Corrosion-inhibition anion intercalation layered double-metal hydroxide and preparation method and application thereof

The invention discloses a corrosion-inhibition anion intercalation layered double-metal hydroxide and a preparation method and application thereof, aims to improve the corrosion resistance of a water-based anti-corrosion coating, and relates to the technical field of water-based anti-corrosion coatings. The chemical composition of the corrosion-inhibition anion intercalation layered double metal hydroxide is [M1 (1-x) M2 x (OH2)] X + (A) x/n, wherein M1 comprises Mg < 2 + >, Zn < 2 + >, Ni < 2 + >, Co < 2 + >, Cr < 2 + >, Mn < 2 + > or Fe < 2 + >, M2 comprises Al < 3 + >, Fe < 3 + > or Ce < 3 + >; and A < n-> comprises PO4 < 3-> and SiO3 < 2->, n is 2 or 3, and x is 0.2-0.35. The corrosion-inhibition anion intercalation layered double-metal hydroxide and the modifier thereof can be added into a water-based epoxy coating layer in a certain proportion independently or in a combination of two or more of the corrosion-inhibition anion intercalation layered double-metal hydroxide and the modifier.