▎ 摘　　要

NOVELTY - Wear-resistant polyurethane rubber comprises 3-5 pts. wt. gamma -mercaptopropyl trimethoxy silane, 20-30 pts. wt. graphene, 0.1-0.3 pts. wt. catalyst, 20-30 pts. wt. carbamate, 0.6-1 pts. wt. aluminum trichloride, 60-70 pts. wt. polyurethane resin, 180-200 pts. wt. butadiene rubber, 2-3 pts. wt. N-phenylaniline, 1-2 pts. wt. accelerator, 3-4 pts. wt. stearic acid, 1-2 pts. wt. sulfur, 1-2 pts. wt. bis( gamma -triethoxy (silylpropyl) tetrasulfide, 10-17 pts. wt. chlorinated paraffin, and 1-2 pts. wt. antioxidant aw. USE - The rubber is useful for conveying belt (claimed). ADVANTAGE - The rubber has good wear-resistant performance, improves the service life of the conveying belt, is not easy to be damaged and has a long service life when used for conveying large-diameter and sharp materials in the mining, building materials, metallurgical and other industries. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the rubber, comprising (i) adding graphene into the mixed acid solution, ultrasonically processing for 10-12 hours, filtering, washing the filter cake water, mixing with stearic acid, drying at 220-240 degrees C, cooling to normal temperature to obtain the pre-processed graphene, where the mixed acid solution is a mixture of 96-97 wt.% nitric acid and 94-96 wt.% sulfuric acid with a mass ratio of 3-4:1, (ii) taking gamma -mercaptopropyl trimethoxy silane, N-phenyl aniline, adding to absolute ethyl alcohol of the mixed material weight of 30-40 times, stirring uniformly to obtain silane dispersion, (iii) taking the pre-processed graphene, adding to the silane dispersion, heating to 45-60 degrees C, stirring and reacting for 3-5 hours, filtering, washing the precipitate, vacuum drying to obtain the mercapto modified graphene, (iv) taking antioxidant aw, adding 80-100 times of acetone, stirring uniformly to obtain antioxidant solution, (v) adding carbamate into antioxidant solution, stirring uniformly, adding aluminum trichloride, introducing into the reaction kettle, adjusting the temperature of the reaction kettle at 130-135 degrees C, preserving temperature and reacting for 90-110 minutes, discharging and cooling to obtain the ester dispersion, (vi) adding mercapto modified graphene into the ester dispersion, stirring uniformly, adding catalyst, ultrasonically processing for 20-30 minutes, discharging, rotary steaming to remove acetone, mixing with the polyurethane resin, stirring at 80-90 degrees C for 1-2 hours to obtain modified polyurethane, (vii) mixing butadiene rubber and bis( gamma -triethoxy (silylpropyl) tetrasulfide, feeding into the mixer, mixing at 60-65 degrees C for 2-3 minutes, (viii) adding modified polyurethane, chlorinated paraffin, adjusting the mixer temperature at 75-85 degrees C, and mixing for 3-4 minutes, (ix) mixing accelerant and sulfur, introducing into the open mill, mixing the sheet, the thickness of the control sheet is 2.5 plus minus 0.2 mm to obtain the mixed rubber, and (x) placing the mixed rubber at room temperature for 20-30 hours, and vulcanizing on the flat vulcanizing machine.