▎ 摘　　要

NOVELTY - Graphene pre-dispersed master particles comprises 10-60 wt.% graphene, 9-36 wt.% rubber carrier, 3-10 wt.% silane coupling agent, 2-8 wt.% calcium stearate, 5-12 wt.% naphthenic oil and 5-25 wt.% inorganic filler. USE - Graphene pre-dispersed master particles used for preparing tire tread rubber and other high-quality rubber products (claimed). ADVANTAGE - The graphene pre-dispersed master particles is convenient for storage, transportation and weighing, can effectively improve the utilization ratio of graphene and reduces the cost, enhances the processing performance, crosslinking density, tensile property, aging resistance, rolling resistance, wear resistance, anti-wet performance of the tire tread rubber. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for graphene pre-dispersed master particles preparation, which involves: (A) heating the mixer at 70-80 degrees C, firstly adding graphene in the mixer and then adding silane coupling agent and stirring for 1-3 minutes at a speed of 120-150 rotations/min (rpm); (B) adding rubber carrier, stirring for 2-4 minutes at a speed of 200-250 rpm and finally adding calcium stearate, naphthenic oil and inorganic filler; (C) stirring for 2-8 mins at a speed of 100-120 rpm and mixing uniformly; (D) raising the temperature to 80-90 degrees C, stirring at a speed of 80-90 rpm and discharging to obtain the rubber material; and (E) extruding the obtained material at a feeding speed of 35-45 rpm and at a temperature of 30-50 degrees C to obtain the product.