▎ 摘　　要

NOVELTY - Preparing graphene or polymer micro-nano complex fiber comprising e.g. spinning magnetic device, which comprises spinning feed stock device and controls the speed of the feeding device, the spinning shower nozzle and spinning machine, the spinning device comprises a level collecting disk, connecting the output shaft bottom, direct current brush-less motor and a collecting disk and connecting the direct current brush-less motor power, a motor rotational speed and motor controller. USE - The method is useful for preparing graphene or polymer micro-nano complex fiber (claimed). ADVANTAGE - The method does not require high voltage, is economical and safe and is suitable for large scale production. DETAILED DESCRIPTION - Preparing graphene or polymer micro-nano complex fiber comprising (i) spinning magnetic device, which comprises spinning feed stock device and controls the speed of the feeding device. The spinning shower nozzle and spinning machine, the spinning device comprises level a collecting disk, connecting the output shaft bottom, direct current brush-less motor and a collecting disk, connecting the direct current brush-less motor power, a motor rotational speed and motor controller, the collecting disk surface and center axis of symmetrical shaft is set with symmetrical vertical column, the vertical column is set with 4 pillars which is permanent magnet, 3 is a metal needle, placing the spinning shower nozzle horizontally, connecting the spinning shower nozzle, spinning receiving device of permanent magnet, and connecting the spinning shower nozzle with a drive shower nozzle drive mechanism in the vertical direction and connecting the spinning shower nozzle and spinning liquid feed device, where the magnetic spinning device and feeding device comprises the micro-injection pump, a syringe needle and micro injection pump. The syringe and needle tube connected to the transfusion tube needle head. The transfusion pipe and spinning shower nozzle are connected. The driving mechanism of shower nozzle device connected to the straight line motor and its controller, (ii) preparing spinning precursor solution: providing magnetic nano-particle, graphene dispersion liquid and high molecular polymer in an organic solvent and preparing into spinning front body solution, preparing magnetic spinning device using graphite or polymer micro-nano complex fiber, adding the step (ii), obtained spinning precursor solution into an feeding device, opening feeding device and maintaining the feeding device speed, spinning the spinning shower nozzle injection port, adding front body solution droplet into the forming jet and permanent magnet is tent together under action of magnetic force site, opening the shower nozzle drive machine, motor controller and a direct current brush-less motor, collecting the solution in an direct current brush-less motor drive, activating the iron magnetic fluid jet under magnetic force action and continuing pulling out, carrying out refining process for solvent volatilization and collecting the orderly formed graphene in an vertical column and polymer micro-nano complex fibers.