Investigation on Acoustic and Thermal Properties of Powdered Granular Mask (PGM) Reinforced Green Epoxy Composites

Sangilimuthukumar  Jeyaguru; Harikrishnan  Pulikkalparambil; Senthil Muthu  Kumar Thiagamani; Choon Kit  Chan; Jeyanthi  Subramanian

doi:10.6000/1929-5995.2024.13.27

Authors

Sangilimuthukumar Jeyaguru Department of Mechanical Engineering, Francis Xavier Engineering College, Tirunelveli 627003, Tamil Nadu, India
Harikrishnan Pulikkalparambil School of Nanoscience and Nanotechnology, Mahatma Gandhi University, Priyadarshini Hills, Kerala 686560, India
Senthil Muthu Kumar Thiagamani Department of Mechanical Engineering, Kalasalingam Academy of Research and Education, Anand Nagar, Krishnankoil 626126, Tamil Nadu, India; Department of Mechanical Engineering, INTI International University, Persiaran Perdana BBN, Putra Nilai, 71800 Nilai, Negeri Sembilan, Malaysia and Centre for Advanced Composite Materials (CACM), Universiti Teknologi Malaysia, 81310 Skudai, Johor Bahru, Johor, Malaysia https://orcid.org/0000-0003-1443-7222
Choon Kit Chan Department of Mechanical Engineering, INTI International University, Persiaran Perdana BBN, Putra Nilai, 71800 Nilai, Negeri Sembilan, Malaysia
Jeyanthi Subramanian School of Mechanical Engineering, Vellore Institute of Technology, Kelambakkam - Vandalur Road, Chennai 600127, Tamil Nadu, India

DOI:

https://doi.org/10.6000/1929-5995.2024.13.27

Keywords:

Powdered Granular Mask, Green Epoxy, Noise Reduction Coefficient, Transmission Loss, Thermal stability

Abstract

This study investigates the acoustic and thermal properties of powdered granular mask (PGM) reinforced green epoxy (GE) composites, with PGM contents of 30 vol.%, 40 vol.%, and 50 vol.%. The aim is to develop sustainable, high-performance materials with enhanced insulation properties. Among the samples, S4 (PGM/50 vol.% GE) exhibited the highest Noise Reduction Coefficient (NRC) of 0.30, demonstrating excellent acoustic shielding. Increasing the GE content improved the Transmission Loss (TL) by densifying the composite structure, significantly enhancing sound attenuation. In the high-frequency range, S2 (PGM/30 vol.% GE), S3 (PGM/40 vol.% GE), and S4 recorded TL peaks of 39.3 dB, 43.5 dB, and 44.9 dB at 1372 Hz, 1552 Hz, and 1544 Hz, respectively, confirming improved acoustic performance with higher PGM content. Thermal stability also increased with higher GE content, with S4 showing the highest decomposition inflection temperature of 472°C, indicating enhanced heat resistance. The novelty of this work lies in the dual functional benefits of PGM/GE composites, which offer both superior acoustic insulation and thermal stability. These properties make the composites ideal for aircraft flooring systems, particularly in areas such as cockpits and passenger cabins, where both sound insulation and thermal control are critical. The findings underscore the potential of PGM/GE composites for sustainable, high-performance applications requiring both acoustic and thermal management.

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