▎ 摘　　要

NOVELTY - Preparing nano-particle doped graphene oxide reinforced copper-based composite material comprises (i) taking graphene oxide and nano-particle powders and adding into deionized water, stirring the two mixtures for 30 minutes at 400 revolutions/minute, and carrying out ultrasonic treatment for another 120 minutes to obtain 0.25-1 mg/ml graphene oxide dispersion and 0.5-2 mg/ml nanoparticle powder suspension; (ii) pouring the nanoparticle suspension and the assembling reducing agent in the graphene oxide dispersion, accompanying the adding process by 400 revolutions/minute stirring, stirring at 400 revolutions/minute for 30 minutes, and obtaining mixed solution of nanoparticles and graphene oxide; (iii) performing assembly reduction treatment on the mixed solution, cooling the mixed solution to room temperature, using 50 degrees C deionized water to wash the suspended matter multiple times until the deionized water after washing is neutral, and freezing and drying at -50 degrees C for 24 hours. USE - The method is useful for preparing nano-particle doped graphene oxide reinforced copper-based composite material. ADVANTAGE - The method effectively solves the problem of poor dispersion of graphene in the copper matrix and poor wettability with the matrix. DETAILED DESCRIPTION - Preparing nano-particle doped graphene oxide reinforced copper-based composite material comprises (i) taking graphene oxide and nano-particle powders and adding into deionized water, stirring the two mixtures for 30 minutes at 400 revolutions/minute, and carrying out ultrasonic treatment for another 120 minutes to obtain 0.25-1 mg/ml graphene oxide dispersion and 0.5-2 mg/ml nanoparticle powder suspension; (ii) pouring the nanoparticle suspension and the assembling reducing agent in the graphene oxide dispersion, accompanying the adding process by 400 revolutions/minute stirring, stirring at 400 revolutions/minute for 30 minutes, and obtaining mixed solution of nanoparticles and graphene oxide; (iii) performing assembly reduction treatment on the mixed solution, cooling the mixed solution to room temperature, using 50 degrees C deionized water to wash the suspended matter multiple times until the deionized water after washing is neutral, freezing and drying at -50 degrees C for 24 hours, and obtaining nano-particle doped reduced graphene oxide composite aerogel; (iv) adding the composite aerogel, copper powder and 1% acetone into the three-dimensional vibrating powder mixer for two-step powder mixing, where, in the step (i), the vibration frequency is 50 Hz, 2-6 hours, in the step (ii), the vibration frequency is 30 Hz, 6-12 hours, and obtaining the mixed powder; and (v) adding the mixed powder into the graphite mold for pre-pressing, where the pre-pressing pressure is 10 MPa, holding pressure for 30 seconds, adding it into a plasma electric sintering furnace, raising temperature to 600-650 degrees C, and keeping for 5-15 minutes under 30-50 MPa.