Self-supporting acoustic panel for protecting automobile engine, comprises a molded structure having a support zone intended to be mounted against a vibrating support, where the structure is based on a composition having crushed elastomer

摘要

The self-supporting acoustic panel for protecting automobile engine, comprises a molded structure having a support zone intended to be mounted against a vibrating support, where the structure is based on a composition having crushed elastomer covered in a thermoplastic matrix. The proportion of the elastomer in the composition is arranged so that the structure having vibration damping properties to obtain damping vibrations generated by the vibrating support. The elastomer is based on a tire. Granulometry of the elastomer is 0.5-2 mm and a mass percentage of the elastomer is 10-50%. The self-supporting acoustic panel for protecting automobile engine, comprises a molded structure having a support zone intended to be mounted against a vibrating support, where the structure is based on a composition having crushed elastomer covered in a thermoplastic matrix. The proportion of the elastomer in the composition is arranged so that the structure having vibration damping properties to obtain damping vibrations generated by the vibrating support. The elastomer is based on a tire. Granulometry of the elastomer is 0.5-2 mm and a mass percentage of the elastomer is 10-50%. The structure of the panel at 23[deg]C has damping coefficient of =0.1. The structure of the panel at 100[deg]C has a pulling module of =500 MPa to protect upper part of the engine. The structure of the panel at 50[deg]C has a pulling module of =500 MPa to protect lower part of the engine. The average thickness is 1-3 mm. The support zone is in a projection form. The support zone comprises a fixing unit intended to cooperate with a reciprocal unit.