▎ 摘　　要

NOVELTY - A graphene-bacterial cellulose-metal carbides/nitrides (MXene) hybrid aerogel comprises a three-dimensional porous network structure constructed by graphene, bacterial cellulose and MXene thin layer nanosheets. USE - The graphene-bacterial cellulose-MXene hybrid aerogel is used in preparing epoxy resin-based composite material (claimed). ADVANTAGE - The graphene-bacterial cellulose-MXene hybrid aerogel improves the friction performance of the composite material and exhibits synergistic reinforcing effect. The introduction of bacterial cellulose and MXene thin layer nanosheets achieving a synergistic enhancement of the tribological properties of epoxy resin composites, and improves the strength and structural continuity of graphene aerogel. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: a preparation method of the graphene-bacterial cellulose-MXene hybrid aerogel comprising mixing and dispersing graphene oxide, bacterial cellulose, MXene thin layer nanosheets, reducing agent and crosslinking agent to obtain a mixed system, and carrying out hydrothermal reduction reaction and freeze drying the mixed system to obtain the graphene-bacterial cellulose-MXene hybrid aerogel; an epoxy resin-based composite material comprising the graphene-bacterial cellulose-MXene hybrid aerogel and epoxy resin condensate infused in the graphene-bacterial cellulose-MXene hybrid aerogel; and a preparation method of the epoxy resin-based composite material comprising mixing an epoxy resin and a curing agent, and performing pre-curing to obtain a pre-cured liquid, and dipping the graphene-bacterial cellulose-MXene hybrid aerogel into the pre-cured liquid, and carrying out vacuum impregnation and curing to obtain the epoxy resin-based composite material.