In order to improve the value of recycling utilization of the textile waste rubber powder (TWRP), a series of nylon fiber (NF)/TWRP sound absorption composites were prepared using TWRP and single-hole hollow NF firstly. Then, the properties and microstructure of the composites were measured and analyzed by instruments of dynamic thermo-mechanical analysis apparatus (DMA), scanning electron microscopy (SEM), absorption instrument and electronic fabric tensile tester et al. The results illustrate that the addition of NF leads to the decreasing of the peak value of damping loss factor and the corresponding glass transition temperature of peak value. With the NF content increasing, the peak value of damping loss factor continues to decrease, whereas the glass transition temperature changes little. The hollow fiber network structure formed by NF makes the composite endowed with sound absorption property, and the rigidity and strength of composites have been obviously improved. The higher the NF content is, the more perfect the fiber network structure will be, and the sound absorption properties of composites improve; the higher the stress of composites is, the lower the strain is. When the NF content is 50wt%, the sound absorption coefficient of NF/TWRP composites with the thickness of 1 mm will be up to 0.476 under the frequency of 2 500 Hz. When the NF content increases from 10wt% to 50wt%, the stress of NF/TWRP composites increases from 112.1 MPa to 161.6 MPa, and the corresponding strain varies from 136.6% to 13.2%. The obtained conclusions provide theoretical basis for functional development of sound absorption materials by using TWRP.
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