PoliDamp damping sheets are manufactured from a compounded and processed mixture of thermoplastic organic polymers to form a highly visco-elastic material.

They are designed to minimise acoustic and vibration radiation of sheet metal primarily.  They can improve sound insulation performance of the substrate by adding mass.

Colour

Base material - Black

Surface Finish - Black

Application

PolIDamp damping sheets are use extensively to reduce vibration in flat, resonant surfaces such as vehicle panels, machine guards, domestic and industrial stainless steel sinks and preparation tables.

Operating and Application Temperatures

PoliDamp damping sheets can be used on substrates at continues temperatures between -10C and 90C.

For ease of application, PoliDamp Sheets should be applied when the ambient temperature is between 18C and 25C.

Fire Performance

PoliDamp damping sheets are classed as self extinguishing, at temperatures over 100ºC there can be gradual degradation of the polymers which result in the evolution of acid fumes.  The rate of evolution increases with in increased temperature, and during combustion.  Breathing apparatus should be work by fire-fighters.

Acoustic Performance

PoliDamp damping sheets improve acoustic performance by increasing decay rate.  Decay rate is the speed in dB/second at which the vibration reduces after panel excitation has ceased.  The higher the decay rate, the better the acoustic performance.

An example of Improvement in Decay Rate on 0.8mm Steel

Dimensions and Weight

Storage and Handling

PoliDamp damping sheets should be stored at temperatures between 10C and 25C and allowed to stabilise at room temperature prior to use.  PoliDamp damping sheets should be used within 5 months of purchase.  Sheets should be stored in a well ventilated area.

Application and Fixing

To obtain optimum bond strength from the self adhesive backing supplied on PoliDamp 3 damping dheets follow these instructions:

1. Allow to stabilise at room temperature prior to use.
2. Apply in horizontal or vertical plane.  Where there is a requirement for the damping sheet to be applied to the underside of a substrate, the substrate should be turned upside down if at all possible.  The damping sheet can then be applied to the underside from the horizontal or vertical plane and left until the adhesive has fully cured before turning the substrate back to its correct position.  If re-orientation of the substrate is not possible, the damping sheet can be applied from the underside providing it is supported against the substrate until the adhesive cures.  It is recommended that some form of permanent additional mechanical fixing also be used to retain PoliDamp to the underside of substrates.  This prevents the downwards pressure and weight of the damping sheet weakening the adhesive bond.
3. Clean and dry the substrate with an appropriate cleaner, i.e. methylated spirit or similar, so that it is free from oil, grease, rust, dust and other particles.  For applications onto timber substrates, the surface should be prepared using a primary coat of A3038 Neoprene Adhesive.
4. Apply when the ambient temperature is between 18C and 25C.  Peel off, the protective backing, position material onto substrate and apply a constant forward and downward pressure to the surface of the damping sheet to ensure it is securely fixed onto the substrate.  A hard timber or steel roller is recommended for this purpose.
5. Particular care must be taken to avoid forming air pockets between the substrate and self-adhesive backing, as this will weaken the bond and reduce the vibration damping performance.

All information provided is true and accurate to the best of our knowledge.  Anything contained within these specifications should only be used as a guide for information purposes.