ACOUSTIC ARTICLES AND METHODS OF MAKING THE SAME

ACOUSTIC ARTICLES AND METHODS OF MAKING THE SAME

An acoustic article (10) comprising a porous layer (14) and an acoustic absorbing filler (18) embedded within the porous layer, and methods of making the same. The acoustic absorbing filler includes agglomerates comprising porous amorphous silica particles and a binder. The acoustic absorbing filler...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ALEXANDER, Jonathan H, SEO, Yongbeom, PETKOVICH, Nicole D, SHI, Tongyang, BERRIGAN, Michael R, MOK, Michelle M, LEE, Seungkyu
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACOUSTICS
ACOUSTICS NOT OTHERWISE PROVIDED FOR
METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL
MUSICAL INSTRUMENTS
PHYSICS
SOUND-PRODUCING DEVICES
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Beschreibung
Zusammenfassung:An acoustic article (10) comprising a porous layer (14) and an acoustic absorbing filler (18) embedded within the porous layer, and methods of making the same. The acoustic absorbing filler includes agglomerates comprising porous amorphous silica particles and a binder. The acoustic absorbing filler has a median sieved particle size of 100 i.un to 2000 i.un. The acoustic article has a normal incidence acoustic absorption of no less than 0.09 a at 400 Hz.