▎ 摘　　要

NOVELTY - A polyethylene terephthalate (PET) composite material comprises a PET composite material main component (1) provided with sound insulation cotton (2). USE - Polyethylene terephthalate composite material for automobile sound insulation pad. ADVANTAGE - The composite material has improved safety and sound insulation effect while reducing the waste and use of materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for manufacture of PET composite material, which involves mixing ethylene glycol phthalate and polystyrene in a ratio of 1:1, adding a small amount of binary mixture of aluminum phenyl phosphinate and graphene in a ratio of 4:1 in the mixed material, controlling the temperature of the mixed material at 80℃, stirring, taking out the PET composite material main component, processing the needed polyethylene (PE) material, adding a small amount of binary mixture of aluminum phenyl phosphinate and graphene in a ratio of 4:1 in the PE material, controlling the temperature at 200℃, stirring, pouring the mixed material into another stirring mixer, putting PET composite glue, melt-mixing at 200℃ to complete production of PET composite material, taking out, leaving still, cooling, polishing the surface, and making the surface roughness RZ10. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of PET composite material. 1Polyethylene terephthalate composite material main component 2Sound insulation cotton