▎ 摘　　要

NOVELTY - The method involves overlapping at least two graphene films (2). The two adjacent graphene films are sewed and fixed by a fiber suture line (1) to obtain the composite graphene film. The fiber sewing thread is one of graphite fiber, carbon fiber and organic fiber. USE - The method is useful for preparing composite graphene film, which is useful as structure or radiating functional material. ADVANTAGE - The method can effectively improve the shear strength of the graphene film layer, has stronger bonding force difference and interlayer strength, effectively improves the heat conducting performance of the composite graphene, and improves the composite moulding ability of the aluminum alloy. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a composite graphene film. DESCRIPTION OF DRAWING(S) - The drawing shows a front view of graphene film in the method for preparing composite graphene film. 1Fiber suture 2Graphene film