▎ 摘　　要

NOVELTY - Graphene-mercaptobenzimidazole composite pre-dispersed masterbatch comprises 55-60 wt.% graphene, 15-35 wt.% 2-mercaptobenzimidazole, 1-4 wt.% vinyl triethoxysilane, 1-2 wt.% dioctyl adipate, 1-2 wt.% triphenyl phosphate, 1-5 wt.% zinc stearate, 7-15 wt.% rubber matrix and 6-14 wt.% industrial white oil, where the rubber matrix is composed of main rubber and processing additive, main rubber is ethylene propylene diene monomer rubber, styrene butadiene rubber, nitrile rubber, acrylate rubber and/or epichlorohydrin rubber, and processing additive is paraffin and pentaerythritol stearate. USE - Used as graphene-mercaptobenzimidazole composite pre-dispersed masterbatch. ADVANTAGE - The masterbatch has excellent mechanical property and excellent aging resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of graphene-mercaptobenzimidazole composite pre-dispersed masterbatch comprising (i) adding main rubber into the mixer, mixing for 1-3 minutes, then adding 1/3 processing additive, mixing for 2-5 minutes, re-mixing, increasing the temperature in the mixer at 80-90 degrees C, then adding remaining 1/3 processing additive, mixing at 80-90 degrees C, and discharging to obtain rubber matrix, then adding the rubber matrix into the open mill at room temperature thin pass three times under the film, (ii) dividing the graphene and the rubber matrix rubber obtained in step (ii) into three portions respectively, heating the mixer at 80-90 degrees C, adding 1/3 rubber matrix material and 1/3 graphene, stirring at 120-160 revolutions per minute for 1-3 minutes, then adding 1/3 graphene and 2-mercaptobenzimidazole, stirring at 120-160 degrees C for 1-3 minutes, then adding 1/3 rubber matrix, 1/3 graphene and zinc stearate, stirring at 150-180 revolutions per minute for 2-3 minutes, then adding 1/3 rubber matrix, vinyl triethoxysilane, dioctyl adipate, triphenyl phosphate and industrial white oil, stirring at 120-150 revolutions per minute for 2-6 minutes, and reacting at 85-90 degrees C to obtain rubber compound, and (iv) feeding the rubber material obtained in step (iii) into an extruder, stirring at 80-100 revolutions per minute, filtering over 100 mesh filter, extruding and pelletizing to obtain final product.