Abstract: A new type composite of high efficiency sound attenuation was cured. The superfine tungsten powder, plasticizer and stabilizer are added into the PVC resin and blended in the mixing chamber of a HAAKE rheometer. The effect of the filler modification is considered in the composite cure. The properties of modified composite and unmodified one are studied by SEM morphology viewing, acoustic and mechanical measurement. The test results indicate that the reason of the better soundproof and mechanical properties is the particle uniform dispersion and stronger adhesion.

Key words: Composite, Filler modification, Soundproof property, Mechanical property