▎ 摘　　要

NOVELTY - Graphene/molybdenum disulfide heterogeneous copper-based electrical contact material comprises 90-96 wt.% copper powder and 4-10 wt.% graphite/molybdenum disulfide heterojunction material. USE - Used as graphene/molybdenum disulfide heterogeneous copper-based electrical contact material. ADVANTAGE - The contact material has excellent mechanical and electrical properties and low-density characteristics; comprises molybdenum disulfide providing excellent lubricity; ensures the conductivity of the composite material while improving the material hardness and lubricity; reduces the specific gravity. The method is simple, economical. The prepared composite material has good developing prospect in self-lubricating. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene/molybdenum disulfide heterogeneous copper-based electrical contact material comprising (i) preparing graphene/disulfide heterojunction material: dissolving graphene in de-ionized water to prepare graphene dispersion, adding hexadecyl trimethyl ammonium bromide into the graphene dispersion liquid, ultrasonically dispersing for 30-60 minutes to obtain the good dispersibility graphene solution, orderly adding molybdate, hydroxylamine hydrochloride, thiourea in the graphene oxide solution, magnetically stirring for 10-30 minutes, adding the mixed solution into the polyfluortetraethylene lined hydrothermal reaction kettle, reacting for 24 hours at 200-240 degrees C, centrifuging and separating, collecting the product, and using de-ionized water and absolute ethyl alcohol to wash, drying to obtain the graphene/disulfide heterojunction material, and (ii) preparing copper based solid self-lubricating electric contact material: adding prepared graphene/molybdenum disulfide heterojunction material mixed with copper powder to obtain mixed powder, adding in the V-shaped mixer for 1-3 hours, placing the mixed material into a mold, pressing and molding, at last, forming the pressed sample, placing into a vacuum furnace to sinter, raising temperature to sintering temperature, vacuum sintering, cooling to the room temperature to obtain the copper based solid self-lubricating electric contact composite material.