▎ 摘　　要

NOVELTY - Preparing composite material comprises (1) growing two-dimensional material on substrate by chemical vapor deposition to obtain two-dimensional material film, (2) coating polymer on the surface of the two-dimensional material film away from the substrate to obtain composite film comprising two-dimensional material film and polymer layer, and transversely cutting and rolling the composite film to obtain composite wire, and (3) three dimensional (3D) printing the composite wire to obtain the composite material. USE - The composite material is useful in three-dimensional structural mechanics and electrical related fields (claimed). ADVANTAGE - The composite material: has specific configuration and function; uniformly disperses the two-dimensional membrane material in the three-dimensional composite material through the preparation method; and improves the mechanical or electrical properties of the composite material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for composite material prepared by the preparation method.