阻尼涂料是一种涂复在各种金属板材表面上,具有减振、隔声、绝热和一定密封性能的特种涂料.这类具有较高的力学内耗性能的高分子材料,在所涂敷的结构产生振动和辐射噪声时,由于材料的粘弹性内摩擦,将部分机械能转变为热能,从而达到衰减振动和降低噪声的目的.这种高分子材料之所以具有上述性能,同它的三种力学聚集态(即玻璃态、高弹态和粘流态)有关.当材料处于玻璃态时,分子及链段运动均告冻结,在外力作用下产生微小而且可逆的弹性形变,外力消除后,形变立即恢复.当材料温度达到玻璃化温度T_g进入高弹态时,链段运 Damping paint is a kind of special coating which is coated on the surface of various metal plates and has the functions of vibration absorption, sound insulation, heat insulation and certain sealing performance.Highly mechanical materials with high mechanical internal friction properties, Structure vibration and radiation noise, the material due to viscoelastic internal friction, some of the mechanical energy into heat, so as to achieve the purpose of damping vibration and reduce noise.The reason why the polymer material has the above performance, with its three kinds of mechanics Aggregation state (ie, glassy state, high-elastic state and viscous flow state) .When the material is in the glassy state, the molecules and segments of the movement freeze up and produce tiny and reversible elastic deformation under the external force. When the external force is eliminated, the deformation Immediately restored when the material temperature reaches the glass transition temperature T_g into the high-elastic state, the chain of transport