FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 172
illsilent flexible polyurethane foam, pyramid profile
illsilent – S 20 Z, S 20 SEF, S 28 SV/SEF
PTB reference data
Original description
illsilent flexible polyurethane foam, pyramid profile
Material properties
Manufacturer: illbruck GmbH
Thickness: 100 mm, 70 mm
Wall distance: 0 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.76
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.50 | 0.85 | 1.00 | 1.00 | 1.10 |
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| Compare | Value | |
|---|---|---|
| 100 mm | αw0.76 | |
| 70 mm | αw0.69 |
Weight / density: ca. 20 - 28 kg / m³
Dimensions: 1000 x 1000 mm
Distance: 0
