▎ 摘　　要

NOVELTY - Preparing graphene oxide-polyethylene glycol cross-linked network/carbon microsphere composite material comprises carrying out hydrothermal reaction by using glucose solution, washing the product, filtering and drying to obtain carbon microspheres, dissolving dried carbon microspheres in mixed solution of deionized water and absolute ethanol, and adding mixed solution of silane coupling agent and absolute ethanol, washing the product for multiple times, filtering and drying to obtain modified carbon microspheres, preparing a solution of the dried modified carbon microspheres, water and polyethylene glycol, and recording as solution A, preparing the graphene oxide aqueous solution, adding solution B to the uniformly stirred solution A to obtain solution C, and stirring, adding sodium dodecyl sulfonate to uniformly stirred and mixed solution C, heating for reacting, and continuously stirring the whole process, filtering the product, centrifuging, washing and drying. USE - The method is useful for preparing graphene oxide-polyethylene glycol cross-linked network/carbon microsphere composite material. ADVANTAGE - The method: is simple, economical; does not produce harmful substances; can reduce the mechanical friction coefficient and wear rate during the friction process; prolongs the service life of machine; and has certain commercial prospect. DETAILED DESCRIPTION - Preparing graphene oxide-polyethylene glycol cross-linked network/carbon microsphere composite material comprises (a) carrying out hydrothermal reaction by using glucose solution as a carbon source, washing the product for multiple times, filtering and drying to obtain carbon microspheres, (b) dissolving dried carbon microspheres in a mixed solution of deionized water and absolute ethanol, and adding mixed solution of silane coupling agent and absolute ethanol, reacting under condensing reflux heating conditions, washing the product for multiple times, filtering and drying to obtain modified carbon microspheres, (c) preparing a solution of the dried modified carbon microspheres, water and polyethylene glycol, and recording as solution A, (d) preparing the graphene oxide aqueous solution, recording as solution B, and stirring, (e) adding the uniformly stirred solution B to the uniformly stirred solution A to obtain solution C, and stirring, (f) adding sodium dodecyl sulfonate to uniformly stirred and mixed solution C, heating for reacting, and continuously stirring the whole process, and (g) filtering the product, centrifuging, washing and drying.