I'm an intern in a big company which makes flexible polyurehane foam for the automotive sector and I'm working on sound absorption properties of PU foam. I'm not chemist so I'm trying to improve these properties only by modifying process parameters.
Dear Alvin Kissoondoyal, if it has such a shielding effect it will help and contribute in sound isolation. The main effect is that of PU bulk structure. My Regards
Dear Alvin Kissoondoyal, if it has such a shielding effect it will help and contribute in sound isolation. The main effect is that of PU bulk structure. My Regards
You can do tests on the airflow resistivity of samples with and without the agents and compare to model calculations of the absorption based on measured input. Or do the absorption measurement directly on samples in a tube or in a reverberation room using larger samples. In general the automotive absorbents are too thin, or they will benefit from some airspace behind them.
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