| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a damping material having excellent vibration damping properties. Ž<P>SOLUTION: The damping material A is formed by successively laminating and integrating two layers of viscoelastic layers C1, C2 on one surface of an organic compound layer B. A ratio [tan(δ1)] between a loss elastic modulus and storage elastic modulus in the inside viscoelastic layer and a ratio [tan(δ2)] between a loss elastic modulus and storage elastic modulus in the outside viscoelastic layer have a prescribed relationship so that the thickness of a whole viscoelastic layer can be reduced while delivering excellent vibration damping properties. As a result, the damping material can be favorably employed even in a narrow space portion in an automobile component, electrical appliance or the like. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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