Abstract:

In view of the problem of low utilization rate of waste textile fiber,Polyester fiber/TPU composite material was prepared by blending hot pressing method, using waste fiber as reinforced material, thermoplastic polyurethane as matrix material. The composite was processed into perforated plate and combined with discarded polyester fabric and achieved sound absorbing material. The effect of perforate plate aperture, perforate plate thickness, perforation rate and polyester fabric on sound absorbing properties was investigated. Found that, the perforated plate aperture affected sound-absorbing composite’s absorption coefficient peak; perforate plate thickness, perforation rate and polyester fabric layers affected the sound-absorbing frequency range of the composite.

Key words: waste fiber, sound absorption property, composite material, absorption coefficient