Abstract
The characterization of damping resins, and the forming characteristics of vibration damping steel sheets were carried out in order to evaluate polymer layers for vibration damping steel sheets. The bonding strength and damping properties depend on the chemical nature of individual polymers on the vibration damping steel sheets. Polyester-based thermoplastic polymer shows the best performance. Damping characteristics of vibration damping steel sheet can be well predicted from the dynamic loss factor of resins via the WLF equation. The vibration damping properties of polymers can be changed by a plasticizer. It was found that the service temperature of polymer generally decreased using an increasing amount of plasticizer. It is concluded that the vibration damping steel sheet made by the loss factor greater than 0.1 in the range of normal service temperature as well as the tensile shear strength greater than 80 kgf/cm2 at room temperature and the addition of Ni powder have been found to improve weldability the same an ordinary steel sheet. [Work supported by POSCO.]
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