▎ 摘　　要

NOVELTY - Rubber composition comprises 80-91 pts. wt. natural rubber, 9-20 pts. wt. butadiene rubber, 4.5-5.5 pts. wt. gel graphene and 9-12 pts. wt. cracked carbon black. The gel-state graphene is prepared by taking water-soluble graphene or intermediate for preparing the water-soluble graphene as raw material, where the water-soluble graphene surface multiple functional groups comprising carboxy and sulfonic acid groups. The number of layers is more than 10 layers, the size is 0.5-5 microns. The cracked carbon black is carbon black produced by using waste tire as raw material to thermally crack. USE - The composition is useful in the tread of a truck radial tire. ADVANTAGE - The composition: solves the problem that the cracked carbon black affects the relevant properties of the rubber composition when it is applied in the tire rubber composition due to the lack of surface activity, thus limiting the recovery and treatment of the cracked carbon black; can make up for the lack of surface activity of cracked carbon black; enhances the overall performance of the rubber composition, and has a wide range of applications, which is conducive to industrialized production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for Preparing the rubber composition comprising preparing the gel graphene by dispersing the graphene oxide in water, adding benzene hydrazine containing sulfonic acid group, where the mass ratio of the graphene oxide and benzene hydrazine containing sulfonic acid group is 1:1-6, ultrasonically washing for 1-2 hours, reacting for 4-18 hours at 70-90degrees Celsius to obtain the black water-soluble solution, vacuum drying the solution at 60degrees Celsius to obtain the black powder solid, using ethanol as the impurity-removing agent for removing the insoluble impurities by filtering Soxhlet extractor, obtaining the black paste-shaped solid, freezing and drying the black paste-shaped solid to obtain the gel-state graphene or dispersing the graphene oxide in water, adding benzene hydrazine containing sulfonic acid group, ultrasonically washing for 1-2 hours, reacting for 4-18 hours at 70-90degrees Celsius to obtain the black water-soluble solution, vacuum drying the solution at 60degrees Celsius to obtain the black powder solid, using ethanol as the impurity-removing agent Soxhlet extractor for filtering to remove insoluble impurities, drying, obtaining the water-soluble graphene powder, uniformly dispersing the water-soluble graphene in water to prepare suspension, freezing and drying and preparing to obtain the gel-state graphene, adding natural rubber in the internal mixer, butadiene rubber, part of carbon black N234, cracked carbon black, gel graphene, plasticizer, white carbon black, zinc oxide, stearic acid, solid silane coupling agent, processing agent, microcrystalline wax, accelerant and resin, mixing to obtain a section of master batch, placing the first section of master batch for 8 hours, adding the first section of master batch, remaining carbon black N234 and anti-aging agent in the mixer, mixing to obtain second-stage master batch, performing second section master batch for 8 hours, adding the second section master batch and vulcanizing agent for mixing in the mixer, finishing the preparation of final rubber and obtaining the rubber composition.