ポリマーアロイ技術による複合型制振鋼板の制振性と密着性の向上

抄録

The relationship between damping capacity of vibration-damping steel sheets (VDS) and viscoelasticity, measured by dynamic test, of damping resins as been investigated by using polymer and polymer alloy.
Damping capacity has a tendency to be proportionally increased not only to tanδ ( mechanical loss tangent), as predicted by the formula proposed by CREME et al, but also dynamic modulus of damping resins. Damping capacity caluculated by KERWIN'S formula is in good agreement with observed value on high frequency range.
The relationship between tensile shear strength of VDS and dynamic modulus of damping resins has been also investigated. Tensile shear strength is increased by using damping resins of high dynamic modulus.
Polymer is difficult to achieve high tanδ and high dynamic modulus. On the other hand, polymer alloy which is mixture of a high tanδresin and a resin of high dynamic modulus possesses these two properties, and VDS used this polymer alloy as damping resin can be achieved high damping capacity and high tensile shear strength.