▎ 摘　　要

NOVELTY - Graphene-containing graphite/ceramic electrically conductive composite material comprises ceramic slurry of aluminum oxide- magnesium oxide- silicon dioxide- copper(II) oxide-titanium dioxide, where the ceramic slurry is subjected to direct casting into a graphite skeleton containing graphene for dry sintering molding, obtaining the graphite skeleton by sintering and curing a phenolic resin powder by using a laser bound with graphite powder, and the number of graphene layers is 2-6 and the average chip diameter is 80-200 nm. USE - Used as graphene-containing graphite/ceramic electrically conductive composite material. ADVANTAGE - The material can solve the problem of loose porous structure inside the graphite skeleton, increase the conductive path, improve the strength of the graphite skeleton, has increased electrical conductivity and ceramic structure characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the material comprising (a) mixing the flake graphite powder with the phenolic resin powder using a laser sintered three dimensions (3D) printer to print according to the designed graphite skeleton drawing, immersing the graphite skeleton is in the immersion liquid and curing at 120-180 degrees C for 60-120 minutes; (b) adding graphene powder to sodium bicarbonate aqueous solution, mixing by ultrasound, allowing to settle for two days, removing the supernatant to obtain a graphene impregnating solution under vacuum conditions, taking out the sample and immersing the graphite skeleton in the above immersion liquid for 15-30 minutes and drying at 60 degrees C for 24 hours in an oven; (c) mixing aluminum oxide powder, magnesium oxide powder, silicon dioxide powder, copper(II) oxide with titanium dioxide powder, ball milling through a sieve to obtain a ceramic powder having a particle size of less than or equal to 0.988 mu m; (d) adding the organic monomer and crosslinking agent to deionized water and stirring to obtain a premix, adding ceramic powder and dispersing agent, adjusting the pH to 8-9 and stirring to obtain an alumina ceramic slurry; (e) placing the graphene-impregnated graphite skeleton in a mold, pouring the obtained alumina ceramic slurry into a graphite mold, simultaneously adding an initiator and a catalyst during curing reaction, placing under vacuum to cool, removing bubbles to obtain 3D ordered structure graphite/ceramic composite body; and (f) placing the 3D ordered structure graphite/ceramic composite body in a freezer and refrigerating at -25 to -15 degrees C for 1-3 hours, placing in a vacuum freeze dryer and dried under vacuum at -90 to -70 degrees C for 10-12 hours and sintering the dried embryo body in a high temperature furnace.