Applied onto sheet metal panels the Alfakel M tiles reduce the amplitude of vibrations and the radiated noise.
The Alfakel M tiles will achieve the following results in acoustic quieting:
The sound damping properties of the Alfakel M panels have the following properties:
Total Loss Factor
Total loss Factor ηtot for thickness ratio
———––————— = 2
And for frequency of 200 Hz (DIN 53440, Vibrating bar test)
T = 20°C
ηtot = 0.05÷0.09
Decay rate Dt of the vibration amplitude as function of time (Geiger and SAE methods):
T = 20°
Dtot = 5÷12 dB/s.
Shear Modulus and Internal Damping
Shear modulus and Damping (ETAG method Interkeller):
|Temperature °C||G = a 200 Hz (Kg/cm2)||η a 200 Hz|
|Dimension:||1230 x 1040 mm|
|Specific weight:||5,5 kg/dm3|
|Maximum Temperatures:||— 20 ÷ + 90°C|
|Burning rate:||V ≤ 20 mm/min (classes: self-extinguishing)|
|Flammability vertically:||classes V2|
|Thermal conductivity:||0,45 Kcal/mh °C|
|Gasoline and oil resistance:||insufficient, when the surfaces are not protected|
|Diluted acid resistance:||medium|
Alfakel M damping tiles are made of thermoplastic materials and are generally heat installed. If needed, they can be applied using water based adhesives.
For heat based installations, follow these guidelines:
On horizontal surfaces the standard product (Alfakel M 1000) is placed before heating directly on the area to be treated.
Adequate temperatures required to obtain a correct adhesion of the Alfakel M thermo bonding tiles are 120+160°C.
For horizontal and vertical surfaces use the product Alfakel M 2000 with contact adhesive applied to the substrate.