The invention discloses a
graphene composite material and a preparation method thereof. The
graphene composite material is prepared from the following components in parts by weight: 50 parts by weight of
graphene, 25 to 29 parts by weight of
polycarbonate, 5 to 9 parts by weight of 1-ethyl-3-methylimidazoleonium
tetrafluoroborate, 32 to 36 parts by weight of
nickel sulfate, 2 to 6 parts by weight of
acetonitrile, 38 to 42 parts by weight of
polyvinyl alcohol, 7 to 9 parts by weight of
cellulose grafted
acrylamide polymer, 16 to 22 parts by weight of
starch-polyacrylate grafted
copolymer, 7 to 9 parts by weight of
polyacrylic acid-
acrylonitrile, 20 to 24 parts by weight of
potassium permanganate, 3 to 5 parts by weight of
tungsten carbide and 4 to 6 parts by weight of high-strength
carbon fibers. The preparation method disclosed by the invention has the advantages of high yield, no
pollution and uniform graphitization; in addition, the graphitization degree is improved; the graphene
composite material has the characteristics of excellent superconducting electrical properties, heat dissipation performance, superhigh
toughness, light weight, high-
temperature resistance,
flame-retardant property, anti-oxidation property, acid and alkali resistance, mechanical damage resistance and the like.