▎ 摘　　要

NOVELTY - Environment-friendly polypropylene (PP) plastic comprises 58-88 pts. wt. PP resin, 5-19 pts. wt. plant fiber starch, 8-16 pts. wt. calcium carbonate, 1.3-3 pts. wt. nano titanium dioxide, 6.8-9.8 pts. wt. of silane coupling agent, 1-2 pts. wt. of nano silver oxide, 8-12 pts. wt. graphene, 1-3 pts. wt. nano zinc oxide, 8-18 pts. wt. ethylene to vinyl acetate copolymer 8-12 pts. wt. 3-ammonia propyl triethoxy silane, and 10-15 pts. wt. ethyl acetate. USE - Environment-friendly polypropylene plastic. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) the method for preparing environment-friendly PP plastic, which involves mixing the plant fiber starch, calcium carbonate, nano titanium dioxide, nano silver oxide and graphene, adding into the ultra-micro grinding machine for grinding, grinding time is 15 -20 minutes, then sieving by 200 meshes sieve to obtain the mixture A, the mixture A is injection molding machine to obtain master batch, putting the master batch and the rest material into the high speed mixer, stirring and mixing, the mixing temperature is 65-70 degrees C, the mixing time is 8-10 minutes to obtain the mixture B, adding the mixture B into the extruder to extrude, the extruding temperature is 190-230 degrees C, the time is 5-8 seconds, the extruded material is PP plastic; and (2) device of environment-friendly PP plastic, which comprises a mounting box (1), a door plate (2), an injection cylinder (4), a second driving motor, a speed reducer and a second auger, where the front side wall of the mounting box passes through the bolt door fixedly connected with, the inner bottom of the mounting box fixedly connected with a second driving motor, the output end of the second driving motor fixedly connected with speed reducer, the injection cylinder is rotatably connected with the speed reducer through the bearing fixedly connected with the speed reducer, the speed reducer fixedly connected with fixedly connected with the rotation axis (3) fixedly connected with the second auger pushing the material to move, and rotation axis wall of the injection cylinder is insliding connection, the injection cylinder is connected with a heating structure for heating the injection cylinder, the heating structure comprises a water tank (5), a water outlet pipe (6) and a water inletpipe. DESCRIPTION OF DRAWING(S) - The drawing shows the bottom view of environment-friendly PP plastic device. Mounting box (1) Door plate (2) Injection cylinder (4) Water tank (5) Water outlet pipe (6)