▎ 摘　　要

NOVELTY - Preparing graphene-based alkenyl carbon fiber at room temperature, comprises (i) extruding the graphene oxide spinning solution into the differentiation flow passage, cutting graphene oxide spinning solution into multiple microfibrillated structure through the shunt grid, (ii) introducing the graphene oxide liquid crystal of microfibrillated structure into coagulation bath to obtain the primary microfibrillated graphene oxide fiber, introducing into the stretching bath, and plasticizing, (iii) carrying out continuous multi-stage stretching the plasticized fiber in the stretching bath, keeping the external force to keep the straight arrangement of the graphene oxide layer, releasing the stress between the sheet layers, (iv) continuously passing the fiber through the reducing bath, performing chemical reduction in the stretching state, and (v) providing the fully reduced graphene fiber for shaping treatment, and applying external force to keep the current length. USE - The method is useful for preparing graphene-based alkenyl carbon fiber at room temperature. ADVANTAGE - The method has high preparation efficiency, no heat treatment, is energy saving, environmentally friendly and economical. DETAILED DESCRIPTION - Preparing graphene-based alkenyl carbon fiber at room temperature, comprises (i) extruding the graphene oxide spinning solution into the differentiation flow passage, the differentiation flow passage comprises a spinning tube and a shunt grid vertically set on the front section of the spinning tube, cutting graphene oxide spinning solution into multiple microfibrillated structure through the shunt grid, and keeping microfibrillated structure at the back section of the spinning tube, (ii) introducing the graphene oxide liquid crystal of microfibrillated structure into coagulation bath to obtain the primary microfibrillated graphene oxide fiber, introducing into the stretching bath, soaking to make it plasticized, plasticizing to increase the interlayer distance of the graphene oxide, where the stretching bath is ethanol, acetone, isopropanol, acetic acid, ethyl acetate, methanol, water, glycerol, propylene glycol, ethylene glycol, triethylene glycol, tetraethylene glycol, pentaethylene glycol, hydrochloric acid, organic amine or mixed solvent, (iii) carrying out continuous multi-stage stretching the plasticized fiber in the stretching bath, the total stretching rate is 50%, keeping the external force to keep the straight arrangement of the graphene oxide layer, releasing the stress between the sheet layers, (iv) continuously passing the fiber through the reducing bath, performing chemical reduction in the stretching state, and (v) providing the fully reduced graphene fiber for shaping treatment, and applying external force to keep the current length.