▎ 摘　　要

NOVELTY - The utility model relates to the technical field of nylon processing device, especially a graphene modified nylon double-screw extruder, comprising an extruding system, a front feeding device and a back feeding device, the extruding system is divided into mixed exhaust section according to different functional sections of the double-screw; a melting section and an extruding section, the front feeding device is provided with a front feeding port, the front feeding port is connected with the mixing exhaust section, the rear feeding device is provided with a rear feeding port, the rear feeding port is connected with the melting section, the end part of the extruding section is provided with a discharging port, one end of the extruding section close to the discharging port is further provided with a reflux port, the reflux inlet is connected with the back feeding device through the reflux pipe, the reflux inlet and the reflux pipe of the back feeding device and the extruding section are added in the melting section of the common double-screw extruder, the melt mixed material after mixing and extruding can be recycled and mixed again, the dispersion uniformity of the graphene in the nylon matrix is greatly improved, improving the consistency and stability of graphene modified nylon material performance.