Green preparation method of tire rubber powder/polypropylene thermoplastic elastomer

The invention discloses a green preparation method of a tire rubber powder/polypropylene thermoplastic elastomer. The tire rubber powder/polypropylene thermoplastic elastomer comprises full tire rubber powder; the preparation method comprises the following steps: adding the regeneration activating agent into the whole tire rubber powder, activating in a high-pressure kettle at 120 DEG C, plasticizing polypropylene at 160 DEG C, sequentially adding the sulfur, the compatilizer, the zinc oxide, the stearic acid, the antioxidant 1010 and the environment-friendly softening agent, and uniformly mixing to obtain a premix; adding the mixture into a double-screw extruder at 180 DEG C, carrying out reactive mixing by virtue of a dynamic cross-linking system and strong mechanical shear stress, so as to obtain the tire rubber powder/polypropylene thermoplastic elastomer, and carrying out mold pressing to form sheets. The performance detection shows that the tensile strength reaches 20.12 MPa, the elongation at break rea