Sound-absorbing and sound-insulating ABS (acrylonitrile-butadiene-styrene) composite and preparation method thereof

The invention discloses a sound-absorbing and sound-insulating ABS (acrylonitrile-butadiene-styrene) composite and a preparation method thereof. The composite is mainly prepared from components in parts by weight as follows: 60-80 parts of ABS, 18-38 parts of composite powder adopting a porous network structure, 0.5-1.0 part of a coupling agent, 0.5-1.0 part of an antioxidant and 1.5-2.0 parts of a processing aid. The preparation method comprises steps as follows: activated composite powder is prepared; ABS and the antioxidant are added to a high-speed stirrer to be stirred at a high speed for 6-8 min firstly, then the activated composite powder and the processing aid are sequentially added to the high-speed stirrer to be stirred at the high speed for 6-8 min and evenly mixed, a mixture is obtained, discharged into a material pool, naturally cooled to the room temperature and then sent into a double-screw extruder for melt-mixing, and the sound-absorbing and sound-insulating ABS composite is obtained through