Preparation method of aging-resistant and corrosion-resistant rubber and plastic product

The invention discloses a preparation method of an aging-resistant and corrosion-resistant rubber and plastic product, which comprises the following steps: proportionally adding the raw materials into a mixer, and uniformly stirring to obtain a mixture; adding the mixture into a reaction kettle, mixing and reacting, extruding and granulating by using a double-screw extruder to obtain modified granules, and grinding the modified granules into powder; then mixing polyurethane, the powder, a foaming agent, an emulsifying agent and xylene sulfonic acid, putting the mixture into a stirrer, stirring, pouring the mixture into a mold, carrying out pressure molding, feeding the mold into a drying oven for vulcanization foaming after pressure molding, and cooling to room temperature to obtain the aging-resistant and corrosion-resistant rubber and plastic product. According to the method, the recycled waste PVC plastic is crushed and modified to serve as a production raw material, harmless and resource utilization of th