▎ 摘　　要

NOVELTY - Graphene (I) is prepared by (1) dispersing graphite oxide in solvent (A), subjecting into ultrasonic peeling treatment to obtain graphite oxide solution; (2) irradiating the graphite oxide solution with gamma -ray at room temperature, and then filtering to obtain graphene. The solvent (A) consists of N,N-dimethylformamide, N-methylpyrrolidone, pyrrolidone, pyrrole, tetrahydrofuran, pyridine, ethanediol, or ionic liquid. USE - Method for preparing graphene (I) used in preparing conductive polymer nanocomposite material (claimed). ADVANTAGE - The method is simple and safe to operate, and has good repeatability. The irradiation process can effectively reduce the graphite oxide in the system into graphene. In addition, a portion of the solvent is absorbed on the graphene surface in the reduction process, thus the obtained graphene (I) has good dispersibility in various solvents and polymer matrices. When graphene (I) is added into polymer and then processed into conductive polymer nanocomposite material, the obtained conductive polymer nanocomposite material has excellent performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) the prepared graphene (I); and (2) preparation of conductive polymer nanocomposite material, comprising (a) dissolving polymer (B) in solvent (A) to obtain a polymer solution, mixing with a solution consisting of graphene (I), stirring for 1-3 hours at room temperature, precipitating with methanol, and filtering to obtain the conductive polymer nanocomposite material; or (b) dissolving polymer (B) or radiation polymerizable monomer (C) in solvent (A) to obtain a corresponding polymer solution or monomer solution, dispersing graphite oxide in the polymer solution or monomer solution, subjecting into ultrasonic peeling treatment, irradiating the resulting mixture with gamma -ray at room temperature, precipitating with methanol, and filtering to obtain the conductive polymer nanocomposite material.