Halogen-free flame-retardant sound-absorbing and noise-reducing PP/PA12 composite material and preparation method thereof

The invention relates to a halogen-free flame-retardant sound-absorbing and noise-reducing PP/PA12 composite material and a preparation method thereof, wherein the halogen-free flame-retardant sound-absorbing and noise-reducing PP/PA12 composite material is prepared from the following raw materials by mass: S1, 35-50 parts of polypropylene, preferably 40-45 parts, S2, 22-44 parts of a product A obtained after hydrolysis of a silicone nitrile rubber, preferably 25-35 parts, S3, 2-6 parts of a product B obtained after hydrolysis of a silicone nitrile rubber, preferably 3-5 parts, S4, 25-40 partsof PA12, preferably 28-35 parts, and S5, an auxiliary agent bag, wherein the auxiliary agent bag contains 0.1-1 part of silicone-containing powder, preferably 0.2-0.6 part, and 0.1-2 parts of an antioxidant, preferably 0.2-1 part. According to the invention, the prepared halogen-free flame-retardant sound-absorbing and noise-reducing PP/PA12 composite material with excellent performance can be used in sealed oil pipes an