▎ 摘　　要

NOVELTY - Preparing graphene/polyacrylonitrile dispersion liquid comprises dissolving sodium thiocyanate in water, adding polyacrylonitrile powder, mechanically stirring, dispersing to obtain polyacrylonitrile solution A, adding graphene to polyacrylonitrile solution A, dissolving by mechanically stirring for 0.5-2 hours, and then dispersing for 1-2 hours to obtain graphene/polyacrylonitrile mixed solution, where the mass fraction of graphene in the graphene/polyacrylonitrile mixed solution is 0.1-5%, dissolving 50-60% sodium thiocyanate in water, then adding polyacrylonitrile powder, dissolving by mechanically stirring for 0.5-2 hours, and dispersing for 2-3 hours to obtain polyacrylonitrile solution B, where the mass fraction of polyacrylonitrile in polyacrylonitrile solution B is 8-15%, mixing the graphene/polyacrylonitrile mixed solution and polyacrylonitrile solution, mechanically stirring for 1-3 hours, and then dispersing for 1-2 hours. USE - The method is useful for preparing graphene/polyacrylonitrile dispersion liquid. ADVANTAGE - The graphene/polyacrylonitrile dispersion: can be uniformly and stably disoersed; and can be added directly to polyacrylonitrile spinning solution. DETAILED DESCRIPTION - Preparing graphene/polyacrylonitrile dispersion liquid comprises (a) dissolving 42-50% sodium thiocyanate in water, adding polyacrylonitrile powder, dissolving by mechanically stirring for 0.5-2 hours, and dispersing for 1-2 hours to obtain polyacrylonitrile solution A, where the mass fraction of polyacrylonitrile in polyacrylonitrile solution A is 0.01-5%, (b) adding graphene to polyacrylonitrile solution A, dissolving by mechanically stirring for 0.5-2 hours, and then dispersing for 1-2 hours to obtain graphene/polyacrylonitrile mixed solution, where the mass fraction of graphene in the graphene/polyacrylonitrile mixed solution is 0.1-5%, (c) dissolving 50-60% sodium thiocyanate in water, then adding polyacrylonitrile powder, dissolving by mechanically stirring for 0.5-2 hours, and dispersing for 2-3 hours to obtain polyacrylonitrile solution B, where the mass fraction of polyacrylonitrile in polyacrylonitrile solution B is 8-15%, and (d) mixing the graphene/polyacrylonitrile mixed solution and polyacrylonitrile solution, mechanically stirring for 1-3 hours, and then dispersing for 1-2 hours.