▎ 摘　　要

NOVELTY - Preparation of graphene oxide-coated metal layered composite material involves cutting metal plate into metal sheet, carrying out vacuum stress relief annealing treatment, adding metal sheet to surface treatment liquid, ultrasonically processing and drying, pickling graphene oxide prepared by Hummers method in surface treatment solution, drying, adding polyvinyl alcohol to deionized water, mixing polyvinyl alcohol aqueous solution with graphene oxide solution and ultrasonically processing, placing dried metal sheet in vacuum drying mold, stacking more than 20 vacuum drying molds with metal sheets, coating graphene oxide dispersion liquid to surface of metal sheet, spreading graphene oxide dispersion evenly on surface of metal sheet, vacuum drying, obtaining metal sheet coated with graphene oxide, placing more than 20 metal sheets with graphene oxide coating in mold of discharge plasma sintering furnace, laminating layer by layer and carrying out discharge plasma sintering treatment. USE - Preparation of graphene oxide-coated metal layered composite material. ADVANTAGE - The method provides graphene oxide coated metal sheet, which are formed into carbides under the condition of high temperature and high pressure. The graphene oxide coating and the metal sheet are tightly combined, thereby achieving structural and functional integration of graphene oxide coated metal sheet. The graphene oxide-coated metal layered composite has high density and overcomes the disadvantage of complex interface bonding of existing laminated structure materials. DETAILED DESCRIPTION - Preparation of graphene oxide-coated metal layered composite material involves cutting metal plate into metal sheet, carrying out vacuum stress relief annealing treatment, adding metal sheet to surface treatment liquid for pickling, ultrasonically processing and drying, pickling graphene oxide prepared by Hummers method in surface treatment solution, drying, adding deionized water, ultrasonically processing and obtaining graphene oxide solution, adding polyvinyl alcohol to deionized water and ultrasonically processing at 80-90 degrees C for 30-120 minutes to obtain polyvinyl alcohol aqueous solution, mixing polyvinyl alcohol aqueous solution with graphene oxide solution and ultrasonically processing at 80-100 degrees C for 30-60 minutes, obtaining graphene oxide dispersion, placing dried metal sheet in vacuum drying mold, stacking more than 20 vacuum drying molds with metal sheets stacked one by one, coating graphene oxide dispersion liquid to surface of metal sheet in each vacuum drying mold, spreading graphene oxide dispersion evenly on surface of metal sheet, vacuum drying molds stacked layer by layer using vacuum drying box, obtaining metal sheet coated with graphene oxide, placing more than 20 metal sheets coated with graphene oxide in mold of discharge plasma sintering furnace, laminating layer by layer, carrying out discharge plasma sintering treatment at 60-300 MPa and heating to 550-1200 degrees C at temperature rising rate of 50-100 degrees C/minute and maintaining temperature for 5-30 minutes.