FoamHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Manufacturer data unter http://www.optac.de, Feb. 2001
Value from the PTB table, not verified
SINOtec OPTACust Skinplan OCP-SKINP-40 flexible foam
OPTACust Skinplan OCP-SKINP-40
PTB reference data
Original description
SINOtec OPTACust Skinplan OCP-SKINP-40 flexible foam
Material properties
Manufacturer: SINOtec GmbH
Thickness: 1.6 in
Wall distance: 0 in
Application: lining of machine housings
Measurement data
Sound absorption
Reverberation chamber (ASTM C423 / ISO 354)
NRC
0.50
derived from ISO 354 lab data
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.20 | 0.25 | 0.45 | 0.80 | 0.60 | 0.70 |
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Value from the PTB table, not verified
NRC: 0.50 (derived from ISO 354 lab data)
Measured values as a table (1 measurement)
| Build-up | NRC | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz |
|---|---|---|---|---|---|---|---|
| 40 mm · 25 kg / m^3 · 0 · Aufkleben · geschlossenporig durch staubdichten Überzug with PU-Haut | 0.50 | 0.18 | 0.25 | 0.43 | 0.78 | 0.58 | 0.70 |
Measured values as a table (1 measurement)
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