▎ 摘　　要

NOVELTY - The utility model claims a preparation device of polytetrafluoroethylene composite material, comprising a horizontally arranged mixing cylinder, the outer wall of the mixing sequentially is provided with multiple groups of mixing nozzles along the axis direction, each group of mixing nozzle comprises two main material nozzles and a secondary material nozzle, two main material nozzles and one auxiliary material nozzle are uniformly distributed along the circumferential direction of the mixing cylinder and are arranged in an included angle of 120 degrees, the discharging end of the main material nozzle and the auxiliary material nozzle are extended into the mixing cylinder and the extending line is crossed on the axis of the mixing cylinder. The preparation device of the utility model uses polytetrafluoroethylene and graphene solution to spray and mix with each other by means of high pressure water jet, large collision impact force and speed difference between multiple fluid can generate severe mixing effect, the polytetrafluoroethylene and graphene realize uniform fast micro-dispersion and interaction, so as to improve the composite uniformity of the polytetrafluoroethylene composite material.