Abstract
Discarded degummed corn cob husk fiber was used as reinforced material and discarded thermoplastic polyurethane (TPU) particles were used as matrix material. The composites were fabricated by blended mastication-hot processing and the micro-slit plate having excellent absorption acoustic performance was fabricated by processing micro-slit on the composites. Sound absorption properties were studied by changing slit rate, slit width and air cavity depth. The results were choosing a smaller slit rate, a smaller slit width and a larger air cavity depth as possible to improve sound absorption coefficient in low frequency level. The double layer micro-slit plate based on corn cob husk fiber and TPU was designed to broaden sound absorption band and to have a wider application. Theoretical absorption coefficient was obtained through building analytical model and massive theoretical calculation. It was found that it had good agreement with the experimental results. Hence, the analytical model could be adopted to predict the sound absorption coefficient of the double layer micro-slit plate.
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Lv, L., Bi, J., Wei, C. et al. Effect of micro-slit plate structure on the sound absorption properties of discarded corn cob husk fiber. Fibers Polym 16, 1562–1567 (2015). https://doi.org/10.1007/s12221-015-5002-x
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DOI: https://doi.org/10.1007/s12221-015-5002-x