Polymer damping material is also called polymer vibration absorbing material. Polymer materials that can transform mechanical vibration energy or sound energy into heat energy and dissipate, and prevent or reduce the damage of mechanical vibration to components. The basic principle of damping is energy loss. When materials undergo vibration deformation, the energy that mechanical vibration energy is transformed into heat energy dissipation is called damping. The larger the damping is, the energy of the input system will be lost in a short time, so the time from the excited vibration to the rest of the system will be shortened. Therefore, the damping can also be understood as the ability of the system to quickly recover to the state before being excited after being excited.
There are many kinds of damping materials, which can be summarized as follows: viscoelastic damping materials (polymer damping materials), composite damping materials, ceramic high temperature resistant damping materials, intelligent damping materials (piezoelectric damping and electrorheological fluids). The damping properties of different damping materials vary greatly, up to several orders of magnitude. The loss factor of most structural materials such as metal materials is small, while that of polymer viscoelastic materials is large. As a new kind of functional material, polymer damping material will develop towards the direction of high performance, intelligence and refinement.