Elastic plastic particles for sports field and preparation method of elastic plastic particles

The invention discloses an elastic plastic particle for a sports field and a preparation method of the elastic plastic particle. The plastic particle comprises the following raw materials: (a) at least one polypropylene with the number-average molecular weight of 200,000-600,000; (b) at least one ethylene propylene diene monomer; (c) at least containing coal mine slag, asbestos powder, a vulcanizing agent, a vulcanization accelerator, an antioxidant and mineral oil; the mass ratio of the polypropylene to the ethylene propylene diene monomer is 2: (3-8); the ethylene content in the ethylene propylene diene monomer is 60-75%, and the Mooney viscosity is 60-70%. The method for preparing the sports plastic particles by adopting dynamic vulcanization and microphase regulation and control is provided for the first time, and compared with a post-vulcanization method in the prior art, the working time is shortened by one third; more importantly, the leftover materials of the sports plastic particles prepared by the m