Evaluation Mechanical and Sound Absorption of PET/PP and Nylon/PP Nonwoven Fabrics

With increase of life quality, demand for surrounding environment becomes more and more severely. Noise pollution in daily life lowers comfortablility and quiet of life. It is reduced accordingly if effective utilization of sound absorbing materials. This study uses polyester (PET) fibers and Nylon fibers bended with PP fibers respectively to form PET/PP and Nylon/PP nonwoven fabrics and then thermally bonded preparing PET/PP and Nylon/PP composites. The optimal parameters are evaluated by mechanical strength, and sound absorption tests. This study expects to prepare sound-absorbing composites in application of automotive interior and indoor building wall. Nylon/PP composites prepared in this study have the optimum sound absorption coefficient of 0.4 at high frequency, when containing 10 wt% proportions of PP fibers.