An acoustic study of shorea leprosula wood fiber filled polyurethane composite foam

Mohd Azahari, Muhammad Shafiq and M. Rus, Anika Zafiah and Kormin, Shaharuddin and Zaliran, M. Taufiq (2018) An acoustic study of shorea leprosula wood fiber filled polyurethane composite foam. Malaysian Journal of Analytical Sciences, 22 (6). pp. 1031-1039. ISSN 1394-2506

[img] Text
AJ 2019 (169).pdf
Restricted to Registered users only
Download (761kB) | Request a copy

Abstract

Polyurethane foam is an excellent material for sound absorbing materials. This material is produced by mixing crosslinker, and polyol to produce foams with the presence of blowing agent. This study consists of an experimental study on acoustics properties enhancement of polyurethane foam by mixing different weight percentage of Shorea leprosula wood fiber into the polymer matrix. An optimal percent of 5-20% wood fiber was used to obtain a homogeneous mixture. The polymer foam composites acoustic properties were measured by using impedance tube test to obtain the sound absorption coefficient. The polymer foam composites UF80 produced have a better sound absorption coefficient, α of 0.9507. UF80 gives a higher density of 865.5 kg/m3 and smallest pore size of 413.4 μm which is determined by using Mettler Toledo Density kit and Scanning Electron Microscope (SEM) respectively compared to UF. The noise reduction coefficient (NRC) of the polymer foam composites UF80 is twice as high as UF. This studies proved that Shorea Leprosula wood fiber influenced the acoustic properties of polymer foam composites.

Item Type: Article
Uncontrolled Keywords: polyurethane foam; wood fiber; acoustic properties; sound absorption coefficient; noise reduction coefficient
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD878-894 Special types of environment, Including soil pollution, air pollution, noise pollution
Divisions: Faculty of Mechanical and Manufacturing Engineering > Department of Manufacturing Engineering
Depositing User: Miss Afiqah Faiqah Mohd Hafiz
Date Deposited: 22 Nov 2021 02:05
Last Modified: 22 Nov 2021 02:05
URI: http://eprints.uthm.edu.my/id/eprint/3755

Actions (login required)

View Item View Item