▎ 摘　　要

NOVELTY - A carbon fiber-graphene oxide-carbon nano-tube multi-scale reinforcement preparation method involves ultrasonically dispersing graphene oxide in distilled water, soaking carbon fiber beam in acetone solution, and drying the beam. The grapheme oxide is soaked in nickel nitrate heptahydrate solution and acetone solution and dried. The graphene oxide is placed in a chemical vapor deposition furnace and subjected to a reduction reaction. The graphene oxide is heated, and the furnace is naturally cooled to obtain a finished product. USE - Method for preparing carbon fiber-graphene oxide-carbon nano-tube multi-scale reinforcement. ADVANTAGE - The method enables preparing the carbon fiber-graphene oxide-carbon nano-tube multi-scale reinforcement with excellent stretching performance. DETAILED DESCRIPTION - A carbon fiber-graphene oxide-carbon nano-tube multi-scale reinforcement preparation method involves ultrasonically dispersing graphene oxide in distilled water, controlling concentration of the graphene oxide at 0.01-0.15 g/l, soaking carbon fiber beam in acetone solution for 2-12 hours, and drying the carbon fiber bream for removing colloid and impurities present on the beam. The grapheme oxide is soaked in a nickel nitrate heptahydrate solution at room temperature for 4-24 hours and acetone solution for 20 seconds to 12 hours and dried at room temperature. The graphene oxide is placed in a chemical vapor deposition furnace that is filled with high purity nitrogen. Reduction reaction is performed on the grahene oxide at 400-450 degrees C for 10-40 minutes. The graphene oxide is heated at temperature of 720-780 degrees C and flow rate of 8-10 l/hour. The furnace naturally cooled to the room temperature to obtain a finished product.