During the flight of missile, launch vehicle and aircraft, because of the working of engine and aerodynamic noise and other reasons, it will cause serious wide-band random vibration and noise environment, and will also excite many resonance peaks of structure and electronic control instrument system, which will cause fatigue failure and dynamic instability of structure, reduce the accuracy of electronic control instrument and even cause failure. Statistics show that the ground of rocket About one third of the failures related to flight test are related to vibration, and the poor damping performance of structural materials is an important reason for such failures. In order to improve the damping performance of the structure, the structural materials and damping materials are combined into composite materials, that is, the structural materials bear the stress, and the damping materials produce the damping effect, so as to control the vibration and reduce the noise.