Can Tong, Xue Qiu

(College of Chemistry and Chemical Engineering, Zhengzhou Normal University.)

Abstract：

This article provides an overview of underwater sound-absorbing materials mainly applied with polyurethane matrix. It mainly elaborates on the underwater sound mechanism, commonly used underwater sound-absorbing materials and structures, as well as new underwater sound-absorbing material structures derived from local resonance phononic crystals, such as phononic crystals, local resonance phonon wood piles, and metamaterial sound-absorbing structures. This provides a broader development space and direction for the future development of underwater sound-absorbing materials

Key Words：

underwater sound absorption; polyurethane; local resonance; phononic crystal