Sound absorption of laminated biopolymer foam and epoxy foam

Adnan, Noor Quratul Aine and Mohd Rus, Anika Zafiah (2013) Sound absorption of laminated biopolymer foam and epoxy foam. In: Advanced Materials Engineering and Technology (ICAMET 2013) , 28-29 November 2013, Bandung, Indonesia .

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Abstract

Biopolymer foam was prepared based on vegetable oil and Polyol Flexible (Epoxy) with commercial Polymethane Polyphenyl Isocyanate (Modified Polymeric-MDI) as laminated foam. The acoustic property of biopolymer foam was examined by impedance tube test according to ASTM E-1050 of sound absorption coefficient (α). From the result obtain, sample D and sample C are the best result of sound absorption coefficient (α) for biopolymer foam and epoxy foam with the value are 0.867 and 0.817 respectively. By using the sound behavior theory, when the thickness is increase the sound absorption is also increase as same as in this study. The noise reduction coefficient (NRC) of sample D is 38.26% while for sample C is 37.42%.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:biopolymer foam;laminate foam; sound absorption
Subjects:T Technology > TA Engineering (General). Civil engineering (General) > TA365-367 Acoustics in engineering. Acoustical engineering
Divisions:Faculty of Mechanical and Manufacturing Engineering > Department of Materials Engineering and Design
ID Code:4824
Deposited By:Normajihan Abd. Rahman
Deposited On:25 Sep 2014 15:34
Last Modified:25 Sep 2014 15:34

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