▎ 摘　　要

NOVELTY - A graphene modified rubber comprises 55-65 pts. wt. 3-grade cigarette tablet glue, 35-45 pts. wt. styrene-butadiene rubber 1502, 2.5-3.5 pts. wt. nano zinc oxide, 1.3-1.8 pts. wt. stearic acid, 1-1.5 pts. wt. N-isopropyl-N'-phenyl-p-phenylene diamine (antioxidant 4010NA), 2-2.5 pts. wt. poly(1,2-dihydro-2,2,4-trimethyl-quinoline) (antioxidant RD), 1-2 pts. wt. 2-mercaptobenzimidazole (antioxidant MB), 45-55 pts. wt. carbon black N220, 8-10 pts. wt. petroleum resin, 4-5 pts. wt. pine tar, 1.5-2 pts. wt. sulfur, 2-2.5 pts. wt. N-cyclohexyl-2- benzothiazole sulfenamide (accelerating agent CBS), 1-1.5 pts. wt. tetramethylthiuram disulfide (accelerating agent TMTD), 1-1.5 pts. wt. 4.4'-dithiodimorpholine (accelerating agent DTDM), 4-8 pts. wt. graphene pre-dispersed emulsion polystyrene butadiene rubber masterbatch, and 5-10 pts. wt. graphene pre-dispersed natural rubber masterbatch. USE - Graphene modified rubber is used for manufacturing conveyor belt cover. ADVANTAGE - The graphene modified rubber has excellent mechanical strength and anti-burning capability, and provides conveyor belt cover having excellent durability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for Preparation of graphene modified rubber, which involves passing graphene pre-dispersed emulsion polystyrene butadiene rubber masterbatch and graphene pre-dispersed natural rubber masterbatch through an open mill, controlling film thickness to 0.3-0.5 mm, preferably 0.5 mm, heating mixing chamber to 50 degrees C, adding 3-grade cigarette tablet glue, styrene-butadiene rubber 1502, graphene pre-dispersed emulsion polystyrene butadiene rubber masterbatch and graphene pre-dispersed natural rubber masterbatch to mixing chamber, mixing for 90-100 seconds, preferably 90 seconds, adding nano zinc oxide, stearic acid, poly(1,2-dihydro-2,2,4-trimethyl-quinoline) (antioxidant RD), 2-mercaptobenzimidazole (antioxidant MB) and petroleum resin, kneading for 100-120 seconds, preferably 120 seconds, adding carbon black N220 and pine tar, mixing for 100-120 seconds, preferably 120 seconds, rolling out the film with an open mill, controlling thickness to 5 plus minus 0.2 mm, cooling, obtaining product (A), heating the mixing chamber to 50 degrees C, adding product (A), sulfur, N-cyclohexyl-2- benzothiazole sulfenamide (accelerating agent CBS), tetramethylthiuram disulfide (accelerating agent TMTD), and 4,4'-dithiodimorpholine (accelerating agent DTDM), mixing for 90-100 seconds, preferably 90 seconds, controlling film thickness to 0.3-0.5 mm, preferably 0.5 mm, adjusting roller pitch, controlling film thickness to 5 plus minus 0.2 mm, preferably 5 mm, rolling, cooling to room temperature for 24 hours or more, preferably 24 hours, obtaining rubber (B), mixing rubber (B) using an open mixer, tanking out film, controlling thickness of smooth film to 2.2-2.3 mm, vulcanizing in a flat vulcanizing machine at 150-155 degrees C, preferably 150 degrees C for 20-30 minutes, preferably 20 minutes, stacking smooth film into 4-6 layers, and vulcanizing in wear mold at 150-155 degrees C, preferably 150 degrees C for 30-35 minutes, preferably 30 minutes.