Manufacturing Technique and Property Evaluation of Sound Absorption Composite Planks

Abstract:

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In this study, the basic material for sound absorption was porous nonwoven made of polyester nonwoven and low-melting polyester fiber. Nonwoven was then attached with foam polyurethane as composite plank for sound absorption and sound isolation. We used two microphone impedance tube for sound absorption test and INSTRON 5566 mechanical testing machine for tensile test. The optimum sound absorption coefficients as 0.67 ± 0.008 was obtained when density of foam polyurethane was 1.0 Kg/㎥ with thickness of 20 mm; Polyester (PET) nonwoven were laminated with 9 layers in a total thickness of 10 mm; and its low-melting polyester fiber was 30 wt%. The composite plank obtained the maximum fracture stress when it contained low-melting-point (low-Tm) PET fiber at 30~40 wt%. The results of this study could be applied in the partitions inside ships, vehicles or buildings.

Info:

Periodical:

Advanced Materials Research (Volumes 239-242)

Edited by:

Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He

Pages:

1933-1936

DOI:

10.4028/www.scientific.net/AMR.239-242.1933

Citation:

J. H. Lin et al., "Manufacturing Technique and Property Evaluation of Sound Absorption Composite Planks", Advanced Materials Research, Vols. 239-242, pp. 1933-1936, 2011

Online since:

May 2011

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Price:

$35.00

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