ACOUSTIC COMPOSITE INCLUDING A STIFFENING POLYMER, DEVICES, AND ASSEMBLIES INCLUDING THE SAME

A composite that includes an expanded polytetrafluoroethylene (ePTFE) membrane having a porous microstructure. The porous microstructure of the ePTFE membrane is impregnated with a stiffening polymer. An acoustic device assembly that includes the composite and an acoustic device is also described. T...

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Bibliographic Details
Main Authors KENALEY, Ryan, NOTIGAN, Lindsey, DUTTA, Anit
Format Patent
LanguageEnglish
French
Published 22.04.2021
Subjects
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:A composite that includes an expanded polytetrafluoroethylene (ePTFE) membrane having a porous microstructure. The porous microstructure of the ePTFE membrane is impregnated with a stiffening polymer. An acoustic device assembly that includes the composite and an acoustic device is also described. The composite and the acoustic device assembly can exhibit an insertion loss of less than 7dB at 1 kHz when measured by the Acoustic Response Measurement ("ARM") Test. L'invention concerne un composite qui comprend une membrane en polytétrafluoroéthylène expansé (ePTFE) ayant une microstructure poreuse. La microstructure poreuse de la membrane en ePTFE est imprégnée d'un polymère de raidissement. L'invention concerne également un ensemble dispositif acoustique qui comprend le composite et un dispositif acoustique. Le composite et l'ensemble dispositif acoustique peuvent présenter une perte d'insertion inférieure à 7 dB à 1 kHz lorsqu'elle est mesurée par le test de mesure de réponse acoustique ("MRA").
Bibliography:Application Number: WO2019US56122