The present invention discloses a method for preparing high flow, high modulus, low odor, and low VOC metallocene homopolymer polypropylene for automotive interior materials. Disperse the metallocene catalyst evenly in a mixture of industrial white oil and Vaseline grease to form a paste like catalyst; Pre press triisobutylaluminum into the pre contact tank, then add a paste catalyst. The continuously added triisobutylaluminum and paste catalyst overflow together into the pre polymerization reactor, reacting with propylene and hydrogen gas added to the pre polymerization reactor to obtain polypropylene prepolymer; Add polypropylene prepolymer, propylene, catalyst, and hydrogen into a loop polymerization reactor for reaction, and the resulting product is subjected to flash evaporation, steam evaporation, and drying in sequence to obtain homopolymer polypropylene powder; Mix the homopolymer polypropylene powder and compound additives evenly, and then use a parallel twin-screw extruder for shear melt blending and extrusion to obtain high flow, high modulus, low odor, and low VOC metallocene homopolymer polypropylene for automotive interior materials. The present invention can be used to prepare high flow, high modulus, low odor, and low VOC metallocene homopolymer polypropylene products for automotive interior materials.
Country Code: CN
Application Number: CN202311628917.1
