With the development of science and technology, countries have applied precision guidance technology to ships, and the level of naval equipment has been improved. Therefore, in the modern war, the higher the level of invisibility, the higher the level of invisibility, the higher the level of invisibility will be. There are many kinds of vibration sources in the ship itself, and they will be excited in the course of navigation and produce strong vibration, which will generate air and water noise. Using the technology of vibration reduction and noise reduction to reduce the noise of warship can improve the concealment of warship and improve the ability of attack and defense. Reducing the self noise in attack can improve the detection distance of sonar, improve the effect of camouflage jamming equipment of sonar and improve the concealment of warship.

In the west, great attention has been paid to the application of damping materials and technologies in weapons. Some developed countries have set up special research institutions for the application of damping materials in weapons and equipment. Germany from the 20th century In the 1950s, the free damping structure was first developed; in the United States, the constrained damping structure was first developed in the early 1950s and applied to the hull and main engine base of the nuclear submarine. China carried out research on damping, vibration reduction and noise reduction materials around the 1970s. In 1985, the national defense science and engineering Commission listed the stealth technology in the Seventh Five Year Plan and opened the research on stealth technology in China The prologue of inquiry. Through the joint efforts from the Seventh Five Year Plan to the ninth five year plan, great progress has been made in damping materials.

Pcmape developed the high-density ultra-thin polymer damping patch with high constraint damping value, good flame-retardant and self extinguishing performance, no odor and non-toxic volatilization, and good water resistance. It has been applied to the soldier cabin with remarkable effect. The noise can be reduced to 64db (a), reaching the international level. Besides military application, damping material is also an effective method to reduce the vibration response of the ship. The damping layer can be laid on the main engine seat, the front wall of the engine room and the bottom plate frame of the engine room, which can not only consume the excitation energy, reduce the vibration response, but also reduce the structural sound transmission. In addition, damping material can also be used for heat insulation and noise reduction of ship steel plate, base plate, partition board, seat and so on.