Materials 2016, 9(12), 1000; https://doi.org/10.3390/ma9121000
Effects of Perforation on Rigid PU Foam Plates: Acoustic and Mechanical Properties
Jia-Horng Lin 1,2,3,4,5
, Yu-Chun Chuang 2, Ting-Ting Li 5, Chen-Hung Huang 6, Chien-Lin Huang 7, Yueh-Sheng Chen 8 and Ching-Wen Lou 1,9,*
, Yu-Chun Chuang 2, Ting-Ting Li 5, Chen-Hung Huang 6, Chien-Lin Huang 7, Yueh-Sheng Chen 8 and Ching-Wen Lou 1,9,*
1
Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou 350108, China
2
Laboratory of Fiber Application and Manufacturing, Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan
3
School of Chinese Medicine, China Medical University, Taichung 40402, Taiwan
4
Department of Fashion Design, Asia University, Taichung 41354, Taiwan
5
Innovation Platform of Intelligent and Energy-Saving Textiles, School of Textiles, Tianjin Polytechnic University, Tianjin 300387, China
6
Department of Aerospace and Systems Engineering, Feng Chia University, Taichung 40724, Taiwan
7
Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan
8
Department of Biomedical Imaging and Radiological Science, China Medical University, Taichung 40402, Taiwan
9
Graduate Institute of Biotechnology and Biomedical Engineering, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Marco Morreale
Received: 10 September 2016 / Revised: 28 November 2016 / Accepted: 2 December 2016 / Published: 9 December 2016
Abstract
Factories today are equipped with diverse mechanical equipment in response to rapid technological and industrial developments. Industrial areas located near residential neighborhoods cause massive environmental problems. In particular, noise pollution results in physical and psychological discomfort, and is a seen as invisible and inevitable problem. Thus, noise reduction is a critical and urgent matter. In this study, rigid polyurethane (PU) foam plates undergo perforation using a tapping machine. The mechanical and acoustic properties of these perforated plates as related to perforation rate and perforation depth are evaluated in terms of compression strength, drop-weight impact strength, and sound absorption coefficient. Experimental results indicate that applying the perforation process endows the rigid PU foaming plates with greater load absorption and better sound absorption at medium and high frequencies. View Full-TextKeywords:
perforation process; polyurethane (PU) foam; mechanical properties; sound absorption coefficient
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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 (CC BY 4.0).
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Lin, J.-H.; Chuang, Y.-C.; Li, T.-T.; Huang, C.-H.; Huang, C.-L.; Chen, Y.-S.; Lou, C.-W. Effects of Perforation on Rigid PU Foam Plates: Acoustic and Mechanical Properties. Materials 2016, 9, 1000.
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