Polymers, Journal Year: 2025, Volume and Issue: 17(7), P. 874 - 874
Published: March 25, 2025
To address the increasingly complex demands of noise control, this study investigated integration a micro-perforated nanofiber membrane (MPNM) with nonwoven fiber felt (NFF), exploiting their synergistic effects to achieve efficient low-frequency broadband sound absorption. Through theoretical analysis, numerical simulations, and experimental validation, relationship between absorption performance composite structure factors such as lamination sequence, bonding area, perforation parameters, thickness MPNM, NFF were elucidated. These findings provided new insights for design high-performance, tunable, sound-absorbing materials. The results demonstrated that MPNM-NFF effectively combined two distinct mechanisms, thereby expanding effective bandwidth, particularly enhanced Moreover, through algorithmic optimization structural targeted across different frequency bands was achieved, optimal average coefficients reaching 0.70 in range, 0.91 mid-frequency 0.82 full-frequency range. This research offered both foundations practical guidance development materials high efficiency characteristics, paving way innovative applications control
Language: Английский