Illumination aging-resistant plastic for automotive upholstery and processing process thereof

The invention relates to the technical field of manufacturing of automotive upholstery materials. The invention discloses illumination aging-resistant plastic for automotive upholstery and a processing process thereof. The illumination aging-resistant plastic is characterized in that the illumination aging-resistant plastic comprises, by weight, 70-90 parts of polypropylene, 18-28 parts of ethylene propylene diene monomer, 20-30 parts of inorganic mineral filler, 8-12 parts of an anti-ultraviolet agent, 6-10 parts of an antioxidant, 0.15-0.25 part of a coupling agent, 1-3 parts of a dispersingagent and 1-3 parts of an antistatic agent; the antioxidant comprises a main antioxidant and an auxiliary antioxidant in a mass ratio of 1: (0.5-1); the anti-ultraviolet agent comprises nano zinc oxide and benzophenone in a mass ratio of 1: (0.5-1); the specific processing process comprises the following steps: S1, proportioning and preparing materials; S2, drying and mixing; S3, stirring and mixing; S4, extrusion moldin