▎ 摘　　要

NOVELTY - Preparing low temperature resistant polypropylene packaging film comprises e.g. taking 40-55 pts. wt. polypropylene, 18-24 pts. wt. allyl acetoacetate, 5-14 pts. wt. coconut oil acid monoethanolamide, 10-18 pts. wt. graphene oxide, 5-8 pts. wt. tri (2, 4-butyl phenyl) phosphite ester, 12-15 pts. wt. hydroxy silicone oil, 5-15 pts. wt. nano aluminum oxide, 3-5 pts. wt. zinc stearate, 4-8 pts. wt. bis-tertiary butyl peroxide isopropyl benzene, 2-6 pts. wt. dibasic lead phosphate and 4-8 pts. wt. sodium lauryl sulfate. USE - The method is useful for preparing low temperature resistant polypropylene packaging film (claimed). ADVANTAGE - The preparation method is simple. DETAILED DESCRIPTION - Preparing low temperature resistant polypropylene packaging film comprises taking 40-55 pts. wt. polypropylene, 18-24 pts. wt. allyl acetoacetate, 5-14 pts. wt. coconut oil acid monoethanolamide, 10-18 pts. wt. graphene oxide, 5-8 pts. wt. tri (2, 4-butyl phenyl) phosphite ester, 12-15 pts. wt. hydroxy silicone oil, 5-15 pts. wt. nano aluminum oxide, 3-5 pts. wt. zinc stearate, 4-8 pts. wt. bis-tertiary butyl peroxide isopropyl benzene, 2-6 pts. wt. dibasic lead phosphate,5-9 pts. wt. phthalic anhydride, 4-8 pts. wt. peroxide heptanoic acid tertiary butyl ester and 4-8 pts. wt. sodium lauryl sulfate, the method includes adding polypropylene and nano aluminum oxide into a high speed stirrer, stirring and heating at 100-110 degrees C, the stirring speed is 350-450 rotations/minute for 18-25 minutes, adding allyl acetoacetate, graphene oxide, tri(2,4 phenyl) phosphite ester, silicone oil, stirring heating at 120-130 degrees C, the stirring speed is 500-600 rotations/minute for 10-15 minutes to obtain mixing material, stewing for 8-15 hours, adding the mixed material into a double-screw extruder, melting and extruding, maintaining the extrusion temperature at 180-200 degrees C, extruding pressure is 14-17 MPa, cooling and granulating to obtain granules, adding into 50-60 degrees C high speed mixer, mixing for 10 minutes, and melting at 130-160 degrees C and plasticizing on the blowing device and other raw materials, molding at 150-180 degrees C, blowing and rolling to obtain the product.