▎ 摘　　要

NOVELTY - Preparation of graphene dispersion, involves adding monomer, initiator and solvent (I) to reaction vessel, reacting, removing solvent (I) by distillation, drying to obtain linear polymer, adding obtained linear polymer to reaction vessel, adding solvent (II) to dissolve completely, adding N-methylimidazole to reaction vessel, stirring, heating, reacting, removing solvent (II) by distillation to obtain pale yellow solid, adding obtained solid and graphene powder to solvent (III), mixing, dispersing ultrasonically and carrying out centrifugal separation to obtain supernatant. USE - Preparation of graphene dispersion. ADVANTAGE - The method provides graphene dispersion, which has high concentration, excellent storage stability and electrical conductivity. DETAILED DESCRIPTION - Preparation of graphene dispersion, involves (a) adding reaction monomer, initiator and solvent (I) to reaction vessel, reacting under stirring at 110 degrees C, removing solvent (I) by distillation under reduced pressure, drying to obtain linear polymer, (b) adding obtained linear polymer to reaction vessel, adding solvent (II) to dissolve completely, adding N-methylimidazole dropwise to reaction vessel under stirring, heating continuously at 90 degrees C, reacting under nitrogen protection, removing solvent (II) by distillation under reduced pressure to obtain pale yellow solid, (c) adding obtained solid and graphene powder to solvent (III), mixing, dispersing ultrasonically and carrying out centrifugal separation to obtain supernatant.