Soundproofing coatings, method for the production thereof,...

G - Physics – 10 – K

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G10K 11/168 (2006.01)

Patent

CA 2548196

The invention relates to a soundproofing coating for an elastic structure (1) consisting of at least two polymers, said coating comprising at least one layer (2) that is close to the elastic structure (1) and consists of at least one polymer A, and at least one layer (3) that is at a distance from the elastic structure (1) and consists of at least one polymer B that is directly applied to at least one polymer A in such a way as to form an integral composite material having a loss factor of between 0.01 and 0.6 in the temperature range of between - 20 ~C and + 80 ~C. The invention also relates to a method for producing one such coating, and to the use of one such coating for creating soundproofing coatings, for example on motor vehicles.

L'invention concerne un revêtement d'isolation phonique destiné à une structure élastique (1) composée d'au moins deux polymères, comportant au moins une couche (2), proche de la structure élastique (1), réalisée dans au moins un polymère (A), et au moins une couche (3), éloignée de la structure élastique (1), réalisée dans au moins un polymère (B), disposée directement sur au moins un polymère (A) de manière à former un composite intégral présentant un facteur de perte de 0,01 à 0,6 dans la gamme de température de - 20 ·C à + 80 ·C. L'invention concerne également un procédé de fabrication d'un tel revêtement et son utilisation dans la fabrication de revêtements d'isolation phonique, par exemple sur des véhicules.

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