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New Developments in Molded Polyurethane for Sound Insulation Applications
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 30, 2001 by SAE International in United States
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The continual trend towards weight reduction resulted in the implementation of molded polyurethane carpet underlay at a density of 43 kg/m3 in early 2000. Now, through new formulation developments, coupled with the production introduction of carbon dioxide co-blown technology, additional weight reductions have been achieved. This has resulted in molded densities of 34 kg/m3 to be reached in prototype moldings. In addition to weight reductions, there has also been a renewed focus on improving the acoustical performance of the sound insulation material. As a result, a new family of formulations has been developed which have shown acoustical improvement while not sacrificing weight. This paper will showcase these new developments and highlight the benefits of polyurethane in sound insulation applications.
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CitationBuck, K., "New Developments in Molded Polyurethane for Sound Insulation Applications," SAE Technical Paper 2001-01-1555, 2001, https://doi.org/10.4271/2001-01-1555.
- Buck, K.A. & Wellman, R.A., 1997, Importance of Durability on Acoustical Performance for Carpet Underlay, Proceedings of the 1997 SAE International Congress & Exposition
- Buck, K.A., 1999, The Next Step in Acoustical Part Weight Reduction, Proceedings of the 1999 SAE Noise and Vibration Conference