Plastic & filmHigh-frequency absorber

Data source

PTB reference data

Physikalisch-Technische Bundesanstalt

Source: Manufacturer data unter http://www.optac.de, March 2002

Value from the PTB table, not verified

SINOtec Stanac Helmholtz resonator made of closed-cell plastic

Stanac

PTB reference data

Original description

SINOtec Stanac Helmholtz resonator made of closed-cell plastic

Material properties

Manufacturer: SINOtec GmbH
Thickness: 35 mm
Wall distance: 0 mm, 10 mm, 15 mm
Up to fire class: highly flammable (B3 according to DIN 4102)
Application: wet areas

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 3 variants

αw
0.45

Frequency values

αp per ISO 11654

f (Hz)1252505001k2k4k
αp0.100.500.400.400.900.75

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CompareValue
15 mmαw0.45
10 mmαw0.25
0αw0.20

Dimensions: 1000 x 1000 x 35 mm

Terms of use
Measured values as a table (3 measurements)
SINOtec Stanac Helmholtz resonator made of closed-cell plastic: sound absorption coefficient αs per ISO 354 by frequency and test build-up
Build-upαw125 Hz250 Hz500 Hz1000 Hz2000 Hz4000 Hz
35 mm · 0 · geschlossenzellig0.200.090.090.100.200.730.70
35 mm · 10 mm · geschlossenzellig0.250.090.100.150.660.850.70
35 mm · 15 mm · geschlossenzellig0.450.090.500.400.420.900.75
Measured values as a table (3 measurements)

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