The Effects of Various Additive Components on the Sound Absorption Performances of Polyurethane Foams. (21st June 2015)

• Record Type: Journal Article
• Authors: Chen, Shuming; Jiang, Yang; Chen, Jing; Wang, Dengfeng
• Other Names: Milani Abbas S. Academic Editor.
• Is Part Of: Advances in materials science and engineering. Volume 2015(2015)
• Publication Date: 2015-06-21
• Subjects: Materials science -- Periodicals; Materials science; Periodicals; 620.11
• DOI: 10.1155/2015/317561
• Languages: English
• ISSNs: 1687-8434

Abstract

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.