OP
ifandorbuts 10+ year member
CarAudio.com Elite
- Thread Starter
- #16
asphlat dampers are not as consistant as butyls.
they have low heat tollerances and often melt. Adding butyl additives helps but only some.
A asphalt mat, with butyl additives with a heat tolelrnac of 350 degrees will have a softening point of 220-230 at which point the material can fall off the panel.at 200 degrees the rated STL or STC factor is cut by about 75%
So the higher the heat tollerance the better damping in higher heat applications.
NOt saying this will happen with any of the listed brands but it can happen with asphalt mats.
Asphalt is also high in VOCs and smells.. toxicicy depends on the asphalt.
forum members get all A stock items at B-stock prices
ANT
they have low heat tollerances and often melt. Adding butyl additives helps but only some.
A asphalt mat, with butyl additives with a heat tolelrnac of 350 degrees will have a softening point of 220-230 at which point the material can fall off the panel.at 200 degrees the rated STL or STC factor is cut by about 75%
So the higher the heat tollerance the better damping in higher heat applications.
NOt saying this will happen with any of the listed brands but it can happen with asphalt mats.
Asphalt is also high in VOCs and smells.. toxicicy depends on the asphalt.
forum members get all A stock items at B-stock prices
ANT