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Advances in Materials Science and Engineering
Volume 2015 (2015), Article ID 317561, 9 pages
http://dx.doi.org/10.1155/2015/317561
Research Article

The Effects of Various Additive Components on the Sound Absorption Performances of Polyurethane Foams

1State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
2College of Automobile Engineering, Jilin University, No. 5988 Renmin Street, Changchun 130022, China

Received 4 December 2014; Revised 18 February 2015; Accepted 27 February 2015

Academic Editor: Abbas S. Milani

Copyright © 2015 Shuming Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Flexible polyurethane (PU) foams comprising various additive components were synthesized to improve their acoustic performances. The purpose of this study was to investigate the effects of various additive components of the PU foams on the resultant sound absorption, which was characterized by the impedance tube technique to obtain the incident sound absorption coefficient and transmission loss. The maximum enhancement in the acoustic properties of the foams was obtained by adding fluorine-dichloroethane (141b) and triethanolamine. The results showed that the acoustic absorption properties of the PU foams were improved by adding 141b and triethanolamine and depended on the amount of the water, 141b, and triethanolamine.