Description:
Dynamat Xtreme is a patented, lightweight
elastomeric butyl and aluminum constrained-layer
vibrational damper. Dynamat Xtreme conforms
and fuses easily to sheet metal and other hard
substrates. Material performance is optimized for
temperature ranges between 14°F and 140°F (-
10°C to +60°C). Material can withstand
temperature extremes between -65°F and +300°F
(-54°C to +149°C) and is highly resistant to
aging.
Acoustic Properties:
The acoustic loss factor "n" is used as a measure
of a material's ability to damp structure-borne
sound by stating how much vibrational energy (in
steel sheets for instance) is converted to heat
rather than sound. For constructions containing
several layers of damping material, the combined
loss factor "n comb" is used. The theoretical
maximum loss factor is 1 (no vibration). An
undamped 1mm thick steel panel has a loss factor
of roughly 0.001 at 200 Hz. Dynamat Xtreme
applied to that panel would increase the loss
factor to 0.417 @ +20°C (+68°F). Multiple layers
of Dynamat Xtreme improve sound damping even
more.
Applications:
Dynamat Xtreme can be die cut to shape and
placed onto the body surface directly on painted
panels or after the sheet metal is cleaned before
painting (typically at the sealer application
operation). Dynamat Xtreme is used to treat
metal panels, partitions, ducts, doors, bins,
panels, and so forth in railroad cars, buses,
automobiles, and ships. It is also used for
ventilation ducts, relay cabinets, steel furniture,
home appliances, sink units, computer equipment,
machine tools and many other objects that suffer
from vibration-produced noise.
Installation:
Use scissors, knife or die to cut Dynamat Xtreme
to the desired size and shape before removing the
release liner. Next, remove dust, grease,
moisture, and other foreign matter from the
application surface. Peel off the release liner. The
simplest application technique is to bend the mat
slightly and attach it along its shortest edge. Press
the mat firmly into place, using a roller for larger
pieces. The roller reduces the risk of leaving air
pockets, which reduce Dynamat's sound damping
capacity. The temperature of the mat and
application surface should not be below room
temperature during fitting. Heating the material is
not necessary.