▎ 摘　　要

NOVELTY - Graphene/alkane composite coating comprises alkane or cycloalkane, graphene and its derivatives, and/or a silane coupling agent. USE - The composite coating is used for aluminum alloy strips. ADVANTAGE - The composite coating has environmental protection, simple process and continuous production, is cost-effective, has excellent properties such as high corrosion resistance, high wear resistance, hydrophobicity, high paint bonding force, low surface resistivity and long service life, and is suitable for the surface treatment of aluminum alloy to meet the needs of aluminum alloy material storage process, follow-up welding and painting. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the composite coating, involving (i) performing surface pretreatment of aluminum alloy strip, (ii) preparing coating, (iii) spraying coating on the surface of the aluminum alloy strip, and (iv) drying to obtain the product.