▎ 摘　　要

NOVELTY - A graphene composite rubber material comprises 120 pts. wt. nitrile rubber, 25 pts. wt. silicone resin, 30 pts. wt. acrylic resin, 10 pts. wt. sepiolite powder, 12 pts. wt. dicumyl peroxide, 7 pts. wt. gelatin, 8 pts. wt. barium stearate, 5 pts. wt. diisononyl phthalate, 6 pts. wt. oleyl alcohol polyethenoxy ether phosphate, 3 pts. wt. graphene, 5 pts. wt. conductive carbon black, 1 pt. wt. silane coupling agent, 5 pts. wt. dispersant, and 3 pts. wt. anti-aging agent. USE - Graphene composite rubber material. ADVANTAGE - The graphene composite rubber material has excellent thermal conductivity and mechanical strength, can be prepared economically, and satisfies the requirements of the industry. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of graphene composite rubber material, which involves (1) weighing each raw material, (2) mixing graphene, sepiolite powder, and conductive carbon black, adding proper amount of water, and grinding for 3-5 hours to obtain 450-550-mesh slurry, spray-drying to obtain powder, where the spray dryer has an air inlet temperature of 250 degrees C and air outlet temperature of 180 degrees C, (3) adding powder to nitric acid, reacting for 5-15 minutes, drying and sending to a mixer, orderly processing nitrile rubber, silicone resin, acrylic resin, dicumyl peroxide and gelatin, mixing at 95-100 degrees C for 25-30 minutes, adding barium stearate, diisononyl phthalate, oleyl alcohol polyethenoxy ether phosphate, and silane coupling agent, mixing for 5-10 minutes, (4) adding the mixed raw material to dispersant, and anti-aging agent, adding 20 pts. wt. deionized water, and ultrasonically processing for 2.5-3 hours at 25-30 kHz with 1200-1300 W to obtain raw material suspension, (5) drying the ultrasonically treated raw material suspension, adding to a twin-screw extruder, melting at 370-390 degrees C, filtering and extruding, where the rotating speed of the twin-screw extruder is 180-200 rpm, and the pressure in the extruding process is 15-18 kPa, and (6) cooling the extruded raw material, stretching and heat-setting at 280 degrees C.