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Description / Abstract:
This specification details the requirements of a two-component
(2K) sprayable polyurethane sound barrier material that can be used
for front of dash applications or other applications where a
barrier material or decoupler assembly is required.
Material Description. Two-component meter-mixed
polyurethane (PU) materials which can be applied at varying
thicknesses across an area. Expandable polyurethane material may
then be applied via injection in order to fabricate a decoupler.
Materials must be homogenous and free of voids for maximum acoustic
performance.
Typical Applications. Any noise and vibration
application where a variable thickness barrier or sound decoupler
is required.