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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Fibre & Textile Research (IJFTR) >
IJFTR Vol.37 [2012] >
IJFTR Vol.37(4) [December 2012] >
| Title: | A preliminary investigation on kapok/polypropylene nonwoven composite for sound absorption |
| Authors: | Veerakumar, A
Selvakumar, N |
| Keywords: | Bulk density
Kapok
Noise reduction coefficient
Nonwoven composite
Porosity
Polypropylene
Sound absorption coefficient
Standing wave |
| Issue Date: | Dec-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The use of kapok
fibre with polypropylene fibre for the development of sound absorptive nonwoven
materials has been explored. Three different blend ratios of kapok and
polypropylene fibres, namely 30:70, 40:60 and 50:50 have been used. The
composites are characterized for their physical properties, namely thickness,
density, porosity and sound absorption characteristics in the frequency range
250 - 2000 Hz. The values of sound absorption coefficient and noise reduction
coefficient obtained indicate that the kapok fibre composites possess very good
sound absorption behaviour in the entire frequency range. The uncompressed kapok/polypropylene nonwoven composite
of 30:70 blend ratio with high bulk density and low porosity is
found to give the best performance when used by providing air gap behind the
composite. |
| Page(s): | 385-388 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1025 (Online); 0971-0426 (Print) |
| Source: | IJFTR Vol.37(4) [December 2012]
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