Preparation method of antibacterial weather-resistant PE/PP plastic

The invention discloses a preparation method of antibacterial weather-resistant PE/PP plastic, and belongs to the technical field of plastic preparation, and the preparation method comprises the following steps: preparing a functional additive, putting polypropylene, polyethylene, the functional additive, maleic anhydride, a polyolefin elastomer and polyethylene wax into a high-speed mixer according to a ratio, carrying out high-speed mixing, and carrying out extrusion molding through a twin-screw extruder to obtain the antibacterial weather-resistant PE/PP plastic. And cooling and molding to obtain the PE/PP plastic. Nano-zinc oxide is modified, and an organic molecular chain of a modifier is grafted on the surface to obtain a functional aid, so that uniform dispersion of zinc oxide in plastic can be promoted, and a halamine functional group contained on a modifier molecule and zinc oxide generate a synergistic antibacterial effect; a functional group of hydroxybenzophenone contained on a modifier molecule a