▎ 摘　　要

NOVELTY - Preparing modified polytetrafluoroethylene composite material comprises pre-treating the polytetrafluoroethylene particle and heat conducting filler to obtain polytetrafluoroethylene powder and filler solution, mixing modifying agent, the filler solution and the polytetrafluoroethylene powder to obtain a modified solution, extracting and drying the modified solution to obtain modified powder, collecting the modified powder for pressing and sintering. USE - The method is useful for preparing modified polytetrafluoroethylene composite material. ADVANTAGE - The method has good thermal conductivity, solves the problem that the existing modified material polytetrafluoroethylene to the poor conductor and limited in the heat exchange field. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation device of modified polytetrafluoroethylene composite material, comprising a crushing module, a mixing module, a shaping module and a processing module are sequentially connected. The crushing module is used for crushing and grinding polytetrafluoroethylene particles to obtain the polytetrafluoroethylene powder. The mixing module is used for mixing polytetrafluoroethylene powder, modifying agent and the filler solution to prepare the modified solution. The shaping module is used for drying the modified solution to obtain modified powder, and pressing the modified powder. The processing module is used for sintering the pressed modified powder to obtain the modified polytetrafluoroethylene composite material. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of a preparing modified polytetrafluoroethylene composite material (Drawing includes non-English language text).