Research on sound absorption properties of multilayer structural material based on discarded polyester fiber |
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Authors: | Xiang Yu Chunyan Wei Yongzhu Cui Xiao Wang Tao Liu |
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Affiliation: | School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, P.R. China |
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Abstract: | Thermoplastic polyurethane was reinforced with discarded polyester fiber to develop excellent mechanical properties of fiberboard composites, by hot pressing and mixing method. The fiberboard was drilled and made as a perforated plate, which was then coupled with polyester fabric; so a multiple layer structural material with good sound absorption function was achieved. Sound absorption properties were studied by changing holes diameter, air cavity depth, and perforation ratio. Theoretical absorption coefficient was obtained through building analytical model and massive theoretical calculation. It was found that it has good agreement with the experimental results. Hence, the analytical model could be adopted to predict the sound absorption coefficient of multilayer structural composites. |
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Keywords: | discarded polyester fiber perforated plate multilayer structural material mechanical properties sound absorption |
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