▎ 摘　　要

NOVELTY - Preparing graphene-modified thermoplastic rubber comprises (i) Weigh 5-10 pts. wt. graphene, adding 25-200 pts. wt. coupling agent, mixing thoroughly and carrying out stirring reaction at 50-80℃ for 1-3 hours to obtain the composition; (ii) adding 30-60 pts. wt. thermoplastic rubber, 5-10 pts. wt. high molecular polymer, 2-8 pts. wt. organic polymer, and 10-30 pts. wt. additives into the composition and heating to 150-180℃ to react for 2-4 hours to obtain mixture A; (iii) adding 30-65 pts. wt. auxiliary materials and 3-7 pts. wt. antioxidant into the mixture A obtained, mixing evenly, placing in a closed container, distilling off the solvent under vacuum and stirring continuously for 1-3 hours to obtain the mixture B; and (iv) sending mixture B into extruder and granulator. USE - The method is useful for preparing graphene-modified thermoplastic rubber is useful for preparing plastic track (claimed) used for athlete speed. ADVANTAGE - The method prepares graphene-modified thermoplastic rubber with proper hardness elasticity, excellent anti-aging performance, weather resistance, and mechanical property with strong regulative property which is good for recycling; and utilizes environment-friendly and pollution-free raw material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Plastic track, prepared by using graphene-modified thermoplastic rubber; and Preparing plastic track, comprising (1) feeding the graphene-modified thermoplastic rubber particles into the screw extruder and extruding them into coils at a temperature of 200-220℃; and (2) spreading the graphene-modified thermoplastic rubber particles on the surface of the coil as the particle surface layer, entering the calender roll, and cooling to obtain the plastic rack coil, where the thickness of coiled material is 8-11mm, and density is 0.9-1.4 g/cmand the thickness of the granular surface layer is 2-5 mm, and the density of the particles in the granular surface layer is 1-1.5 g/cm.3 3