▎ 摘　　要

NOVELTY - Preparing polymer modified graphene composite material comprises e.g. (1) adding 0.01-10 pts. wt. graphite oxide and 100-3000 pts. wt. solvent into the ultrasonic irradiation reactor at an ultrasonic power of 10-5000 W, a frequency of 10-10000 Hz, and under the temperature condition of 20-200 degrees C, ultrasonically dispersing for 0.083-5 hours to obtain a graphite oxide solution, adding 0.001-10 pts. wt. modifier in the graphite oxide solution, continuously ultrasonically dispersing for 5-5 hours, and then stirring and reacting at 40-80 degrees C for 8-48 hours, then centrifuging, controlling the centrifugal speed at 8000-13000 revolutions per minute (rpm), washing to neutral, and finally drying at 40-80 degrees C to constant weight to obtain modified graphene; adding 0.01-10 pts. wt. modified graphene and 100-3000 pts. wt. solvent to the ultrasonic irradiation reactor, and ultrasonically dispersing for 5 minutes under the conditions of ultrasonic power of 10-50000 W, and frequency of 10-100,000 Hz. USE - The method is useful for preparing polymer modified graphene composite material. ADVANTAGE - The method: prepares composite material with good tensile strength and tensile modulus properties, and the simple preparation, low reaction temperature and easy control, low energy consumption, does not generate waste gas and waste liquid, and is environmentally friendly. DETAILED DESCRIPTION - Preparing polymer modified graphene composite material comprises (1) adding 0.01-10 pts. wt. graphite oxide and 100-3000 pts. wt. solvent into the ultrasonic irradiation reactor at an ultrasonic power of 10-5000 W, a frequency of 10-10000 Hz, and under the temperature condition of 20-200 degrees C, ultrasonically dispersing for 0.083-5 hours to obtain a graphite oxide solution, adding 0.001-10 pts. wt. modifier in the graphite oxide solution, continuously ultrasonically dispersing for 5-5 hours, and then stirring and reacting at 40-80 degrees C for 8-48 hours, then centrifuging, controlling the centrifugal speed at 8000-13000 revolutions per minute (rpm), washing to neutral, and finally drying at 40-80 degrees C to constant weight to obtain modified graphene; adding 0.01-10 pts. wt. modified graphene and 100-3000 pts. wt. solvent to the ultrasonic irradiation reactor, and ultrasonically dispersing for 0.083-5 hours under the conditions of ultrasonic power of 10-50000 W, frequency of 10-100,000 Hz, and temperature of 20-200 degrees C for 0.083-5 hours to obtain a modified graphene dispersion, adding 5-300 pts. wt. polymer emulsion to the modified graphene dispersion, and continuously ultrasonically dispersing for 0.083-5 hours to obtain a stable polymer/modified graphene composite emulsion; (2) adding 0.01-30 pts. wt. demulsifier to the polymer/modified graphene composite emulsion, keeping at a temperature of 0-100 degrees C for 1-60 minutes, and the product having a degree of vacuum of 0.1-0.01 Mpa, and drying to constant weight at a temperature of 10-200 degrees C to obtain a polymer/modified graphene composite masterbatch; and (3) adding 0.01-100 pts. wt. polymer, 0.01-100 pts. wt. polymer/modified graphene master batch, 0.01-100 pts. wt. filler, 0.01-20 pts. wt. sulfur, 0.01-20 pts. wt. zinc oxide, 0.01-10 pts. wt. antioxidant, 0.01-40 pts. wt. plasticizer, 0.01-40 pts. wt. flame retardant, 0.01-10 pts. wt. catalyst, 0.01-40 pts. wt. foam stabilizer, 0.01-40 pts. wt. foaming agent, 0.01-10 pts. wt. anti-aging agent, and 0.01-40 pts. wt. vulcanization accelerator, adding to any equipment of single screw extruder, twin screw extruder, internal mixer or twin roll mill, melting and mixing at temperature of 10-330 degrees C for 1-60 minutes, pressing, extrusion or injection molding to obtain the polymer/modified graphene composite.