▎ 摘　　要

NOVELTY - Preparing graphene/polytetrafluoroethylene nanocomposite film split colored fiber involves stirring and mixing inorganic high-temperature-resistant pigment fine powder, graphene derivatives, diffusing agent, and polytetrafluoroethylene dispersion resin at 30-50 rpm and below 19℃ to obtain a mixture. The mass ratio of inorganic pigment fine powder, graphene derivative, diffusing agent and polytetrafluoroethylene dispersion resin is 0.5-1.5:0.5-1.5:1-2.5:60-90. The diffusing agent is made by mixing a dispersant, a stabilizer and a nonionic active agent with a mass ratio of 1-14:1-8:1-11 by a homogenizer. The mixture is mixed with a lubricant, matured, then pre-pressed, pushed, calendered to form a film, dried and degreased, heated and stretched for the first time, slitting, heat-stretched for the second time, then heat-set and twisted to obtain silk. The silk is wound or crimped and cut again. USE - Method for preparing graphene/polytetrafluoroethylene nanocomposite film split colored fiber used in aerospace, defense military industry field, electric wire cable, strong current weak current transmission signal and shielding, anti-radiation industry and to space flight, energy storage, liquid crystal device, electronic device, biological material, sensing material and catalyst carrier. ADVANTAGE - The method improves the use performance of the graphene/and polytetrafluoroethylene composite fiber and colored filament or short fiber by 10%, expands the use range, solves the graphene of difficult to pigtail/PTFE nano-composite fiber coloring and endows the fiber with excellent conductive, heat-conducting function, and excellent color fastness. DETAILED DESCRIPTION - Preparing graphene/polytetrafluoroethylene nanocomposite film split colored fiber involves stirring and mixing inorganic high-temperature-resistant pigment fine powder, graphene derivatives, diffusing agent, and polytetrafluoroethylene dispersion resin at 30-50 rpm and below 19℃ to obtain a mixture. The mass ratio of inorganic pigment fine powder, graphene derivative, diffusing agent and polytetrafluoroethylene dispersion resin is 0.5-1.5:0.5-1.5:1-2.5:60-90. The diffusing agent is made by mixing a dispersant, a stabilizer and a nonionic active agent with a mass ratio of 1-14:1-8:1-11 by a homogenizer. The mixture is mixed with a lubricant, matured, then pre-pressed, pushed, calendered to form a film, dried and degreased, heated and stretched for the first time, slitting, heat-stretched for the second time, then heat-set and twisted to obtain silk. The silk is wound or crimped and cut again, the mass ratio of the mixture to the lubricant is 5-8:1, stirred and mixed at 30-50rpm, the stirring time is 15-30 minutes, and the ambient temperature is lower than 19℃ or mixed the diffusing agent into the micropowder of the graphene derivative, stirred, then added polytetrafluoroethylene dispersion resin and mixed to obtain the prefabricated mixture. The diffusing agent is made by mixing a dispersant, a stabilizer and a nonionic active agent with a mass ratio of 1-14:1-8:1-11 by a homogenizer. The mass ratio of graphene derivatives and polytetrafluoroethylene dispersion resin is 1-2.5:100-200. The mass ratio of the diffusing agent to the fine powder of the graphene derivative is 4-6:4-6. The prefabricated graphene/polytetrafluoroethylene composite material micropowder is mixed with the inorganic pigment fine powder and polytetrafluoroethylene dispersion resin for a second time to obtain a mixture. The mass ratio of the prefabricated graphene/polytetrafluoroethylene nanocomposite micropowder and pigment fine powder, polytetrafluoroethylene dispersion resin secondary stirring and mixing is 3-7:0.05-0.1:3-5, stirring speed 30-50rpm, stirring time 15-30 minutes. The mixture is mixed with a lubricant, matured, and then pre-pressed, pushed, calendered to form a film, dried and degreased, heated and stretched, slitting, heat-stretched for the second time, and then heat-set and twisted to obtain finished wire. The mass ratio of the mixture to the lubricant is 5-8:1, stirred at 30-50 rpm for 15-30 minutes, and the ambient temperature is lower than 19℃.