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HomeKey Engineering MaterialsKey Engineering Materials Vols. 594-595Sound Absorption of Laminated Biopolymer Foam and...

Sound Absorption of Laminated Biopolymer Foam and Epoxy Foam

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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%.

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Advanced Materials Engineering and Technology II

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Periodical:

Key Engineering Materials (Volumes 594-595)

Pages:

291-295

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.594-595.291

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Online since:

December 2013

Authors:

Noor Quratul Aine Adnan, Anika Zafiah M. Rus

Keywords:

Biopolymer Foam, Laminate Foam, Sound Absorption

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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