▎ 摘　　要

NOVELTY - Composite anti-rust material comprises a core layer and a shell layer coated on the surface of the core layer, where the core layer comprises graphite alkyne and aluminum tripolyphosphate, and the shell layer comprises graphene. USE - The composite anti-rust material is used for coating for metal product (all claimed). ADVANTAGE - The composite anti-rust material has excellent anti-rust effect and long service life. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a method for preparing the composite anti-rust material, which involves mixing raw materials comprising aluminum salt, graphite alkyne oxide and water, and performing first reaction to obtain a complex system, mixing the materials comprising the phosphorus-containing material and the complex system, and performing second reaction to obtain a glue, mixing the materials comprising the graphene quantum dots and the glue, and performing third reaction to obtain a composite intermediate, and heating and reducing the composite intermediate in a non-oxidizing atmosphere to obtain the composite anti-rust material; a coating comprising the composite anti-rust material; and a metal product comprising an anti-rust coating comprising the coating.