▎ 摘　　要

NOVELTY - Preparation of soybean graphene fiber involves drying soybeans, controlling the moisture content of the dried soybeans, smashing again, and controlling the process parameters of crushing, obtaining raw materials, mixing the raw materials and stirring with alkali and feeding into carbonization furnace for carbonization and, pickling with acid, obtaining pickling material, adding dispersant to the pickling material, stirring at high speed with a high-speed mixer, grinding, filtering, obtaining carbonized liquid material, drying , using continuous feeding high-speed centrifugal atomization method to lead out through cyclone separator, obtaining graphene material, feeding the graphene material and polyester chips into screw extruder to melt and extrude, cooling and pelletizing to obtain graphene masterbatch, adding the graphene masterbatch and polyester chips into screw extruder, melting, extruding, and feeding to spinning device for melt spinning. USE - Preparation of soybean graphene fiber for clothing, bedding fabrics, bedding, and decorative fillers (claimed). ADVANTAGE - The method is simple, economical and environmentally-friendly, and ensures the stability during the preparation process, and has high preparation efficiency. DETAILED DESCRIPTION - Preparation of soybean graphene fiber involves (1) drying soybeans, controlling the moisture content of the dried soybeans, smashing again, and controlling the process parameters of crushing, obtaining raw materials, (2) mixing the raw materials and stirring with alkali and feeding into carbonization furnace for carbonization and controlling the process parameters of carbonization, obtaining carbonized material, (3) using acid solution to pickle the carbonized material, controlling the number of pickling of the acid solution to the carbonized material, controlling the mass percentage concentration of the acid solution, and control the volume-to-weight ratio of the acid solution to the carbonized material during each pickling, filtering after pickling, obtaining pickling material, (4) adding dispersant to the pickling material, stirring at high speed with a high-speed mixer, controlling the speed of high-speed mixing and the time of high-speed mixing, feeding to grinder for grinding, filtering after grinding, obtaining carbonized liquid material, (5) drying the carbonized liquid material by a high-speed centrifugal spray dryer, using continuous feeding high-speed centrifugal atomization method to lead out through cyclone separator, controlling the inlet air temperature and outlet air temperature of the cyclone separator, obtaining graphene material, (6) feeding the graphene material and polyester chips into screw extruder to melt and extrude, cooling and pelletizing to obtain graphene masterbatch, (7) adding the graphene masterbatch and polyester chips into screw extruder, melting, extruding, and feeding to spinning device for melt spinning.