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Erschienen in:
2019 | OriginalPaper | Buchkapitel
Vibration damping behavior of flexible polyurethane foams under low and high strain regimes
verfasst von : Mark Brennan, Martino Dossi, Yueqi Wang, Maarten Moesen, Jan Vandenbroeck
Erschienen in: Automotive Acoustics Conference 2017
Verlag: Springer Fachmedien Wiesbaden
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Polyurethane flexible foam chemistry is a urethane reaction of isocyanate and polyol, to form a soft-like polymer, and a urea reaction of isocyanate and water to provide the blowing agent CO2 which is released during the reaction. The former reaction gives the foam its flexibility, strength and vibration damping properties, while the latter leads to the cellular microstructure and urea groups that phase separate into hard segments and contribute to the load bearing properties of the foam.