Graphene synthesized regenerated rubber packing filler for oil pumping unit and preparation process of graphene synthesized regenerated rubber packing filler

The invention provides a graphene synthetic regenerated rubber packing filler for an oil pumping unit and a preparation process, and relates to the technical field of synthetic fillers. The graphene synthesized regenerated rubber packing filler for the oil pumping unit is prepared from the following raw materials in parts by mass: 100 parts of mixed rubber particles, 30 to 40 parts of a modified polyurethane prepolymer, 1 to 1.5 parts of graphene, 10 to 15 parts of paraffin particles, 5 to 20 parts of a filling agent and 15 to 20 parts of a slow-release forming agent, the mixed rubber particles are composed of 20-30% of rubber particles with the diameter of 6-10 MM, 30-40% of rubber particles with the diameter of 2-6 MM and 30-40% of rubber particles with the diameter smaller than 2 MM, the modified polyurethane prepolymer is obtained by uniformly mixing 100% of polyether polyol, 20-30% of poly (ethyl acrylate) and 50-60% of diisocyanate, and the graphene is dried graphene powder dried after ultrasonic separa