High-fluidity and anti-impact polypropylene preparation method

The present invention discloses a high-fluidity and anti-impact polypropylene preparation method, which comprises: mixing 60-90 parts by weight of polypropylene, 10-40 parts by weight of an ethylene-propylene block copolymer, and a processing aid, uniformly mixing in a high speed mixer, and carrying out melt extrusion granulation in a twin-screw extruder with a screw rotation speed of 100-250 rotation/min and a temperature of 170-260 DEG C to prepare the high-fluidity and anti-impact polypropylene. According to the present invention, the method has characteristics of low cost, simple process and low equipment requirement, and the prepared product can be used for vehicle plastics.