Synthesis and Evaluation of Polyurethane Foam Composites for Enhanced Sound Absorption at Low Frequency
K. Gananasekaran1, M. Balachandar2, M. Vinoth Kumar3, S.Sathish4, D. Balaji5

1K. Gananasekaran, Department of Mechanical Engineering, Hindustan Institute of Technology and Science, Padur, Chennai.
2M. Balachandar, Department of Mechanical Engineering, Hindustan Institute of Technology and Science, Padur, Chennai.
3M. Vinoth Kumar, Department of Mechanical Engineering, Hindustan Institute of Technology and Science, Padur, Chennai.
4S.Sathish, Department of Mechanical Engineering, Hindustan Institute of Technology and Science, Padur, Chennai.
5D. Balaji, Department of Mechanical Engineering, Hindustan Institute of Technology and Science, Padur, Chennai.

Manuscript received on 07 August 2019. | Revised Manuscript received on 13 August 2019. | Manuscript published on 30 September 2019. | PP: 6815-6818 | Volume-8 Issue-3 September 2019 | Retrieval Number: C5762098319/2019©BEIESP | DOI: 10.35940/ijrte.C5762.098319
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Polyurethane foams are extensively used as sound absorbing materials in various automobile parts. However, the sound absorption capability of polyurethane foam ispoorin low frequency range. The advancement of technologies to develop newerpolymer composites, provide scope to develop composite polyurethane foam with better sound absorption coefficient in low frequency range. Composite foams are made with two different filler materials as crumb rubber and coconut fiber, in varying weight fraction of up to 2.0%. Density, Sound absorption coefficient, and Noise reduction, measurements were done on all polyurethane foams. The effect offiller additionsto polyurethane foams ondensity and sound absorption coefficient at low frequency are discussed.The 1.4 % crumb rubber polyurethane foam offers the best combination of low density, improved sound absorption coefficient value and noise absorption at low frequency.
Index Terms— Polumer Composites; Crumb Rubber; Coconut Coir; Sound Absorption; Noise Reduction; Impedance Tube.

Scope of the Article:
Performance Evaluation of Networks