A kind of reinforced pc/abs composite material for sound absorption and damping and its preparation method

Abstract

The invention discloses a reinforced PC / ABS composite material for sound absorption and damping. The composition ratio of the composite material is: 15-30 parts of PC resin, 15-30 parts of ABS resin, 10-30 parts of aramid chopped fiber, 5-20 parts of toughening agent, 0.5-2 parts of antioxidant. The aramid fiber and the viscoelastic toughening agent have a strong sound absorption effect, especially high-frequency noise. When sound waves are transmitted into the composite, the mechanical energy of the vibration is converted into thermal energy due to the high loss modulus of the viscoelastic toughener. At the same time, the aramid fiber further limits the vibration of the sound wave, thereby playing the role of sound absorption and damping. The invention is suitable for electronic appliances and automotive interior parts that directly require high sound insulation, and has the advantage that it can be directly injection molded, which simplifies the molding process.

Description

technical field [0001] The invention relates to a reinforced PC / ABS composite material for sound absorption and damping and a preparation method thereof, and belongs to the technical field of polymer composite materials. Background technique [0002] At present, most sound-absorbing devices use sound-absorbing layers such as sound-absorbing sponge and rubber to adhere to the surface of parts or devices that need sound-absorbing treatment. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a reinforced PC / ABS composite material for sound absorption and damping, so as to solve the above-mentioned technical problems of the prior art. [0004] A reinforced PC / ABS composite material for sound absorption and damping is composed of the following raw materials in parts by weight: 15-30 parts of PC resin, 15-30 parts of ABS resin, 10-30 parts of aramid chopped fibers, 5 to 20 parts of toughness agent, 0.5 to 2 parts of antioxidant. [0005] The m...

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Problems solved by technology

[0002] At present, most sound-absorbing devices use sound-absorbing sponge and rubber to adhere to the surface of parts or devices that need sound-absorbing treatment. This treatment method has a large space limit and is complicated in process.

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