▎ 摘　　要

NOVELTY - Preparing conductive three dimensional printed graphene composite material comprises (a) dissolving high molecular polymer in an organic solvent, adding graphite powder to obtain a raw material dispersion, (b) peeling the graphite in the raw material dispersion obtained in step (a) using gas-driven liquid phase stripping method, obtaining dispersion liquid containing high molecular polymer, graphene and graphite powder, (c) placing the dispersion liquid obtained in step (b) into a centrifuge, centrifuging to remove un-stripped graphite powder to obtain a polymer/graphene dispersion liquid, (d) adding flocculating agent in the high molecular polymer/graphene dispersion liquid obtained in step (c), filtering, washing, drying to obtain high molecular polymer/graphene composite particle and (e) grinding and extruding the composite particles obtained in step (d) to obtain graphene composite lines for three dimensional printing. USE - The method is useful for preparing conductive three-dimensional printed graphene composite material. ADVANTAGE - The material has high mechanical strength, high thermal stability and has broad application prospects in three-dimensional printing. The method ensures that the high molecular polymers promote the stripping of graphite; obtains high-quality graphene with complete lattice, small sheet thickness, large and uniform lateral size; improves the composite effect of polymer and graphene; has mild operating conditions, simple process, low device requirements, easy large-scale production and has good industrialization prospect. DESCRIPTION OF DRAWING(S) - The drawing shows a process flow diagram of the preparation method of conductive three dimensional printed graphene composite material (Drawing includes non-English language text).