Acoustical ceramic panel and method

Details Acoustical ceramic panel and method Acoustical ceramic panel and method

1994-11-18

1997-11-04

Dang, Khanh

Acoustics

Sound-modifying means

Sound absorbing panels

181292, 181294, 181296, E04B 182

Patent

active

056842783

ABSTRACT:
A rigid acoustic insulator panel for use as a sound insulator is disclosed. The panel is composed of a rigid matrix formed of randomly oriented, fused silica fibers having fiber diameters predominantly in the range between 0.5 and 2 .mu.m. The matrix has a three-dimensionally continuous network of open, intercommunicating voids, and a density of between about 2 and 6 lb/ft.sup.3. In one embodiment, the panel has greater flow resistance characteristics, progressing from a sound-absorbing side of the matrix to the opposite panel side. Also disclosed is a method of preparing the panel.

REFERENCES:
patent: 3021916 (1962-02-01), Kemp
patent: 3211253 (1965-10-01), Gonzalez
patent: 3977492 (1976-08-01), Hankel
patent: 4147578 (1979-04-01), Koss
patent: 4453887 (1984-06-01), Schucker
patent: 4849276 (1989-07-01), Bendig et al.
patent: 5459291 (1995-10-01), Haines et al.
patent: 5594216 (1997-01-01), Yasukawa et al.

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