| abstract |
A steel plate-reinforcing material of a type giving vibration-damping performance to a steel plate including a restricted layer and a thermosetting foamed viscoelasticity layer, as tackifiers included in said thermosetting foamed viscoelasticity layer, the tackifiers including a terpene system resin, an aliphatic series system petroleum resin and an aromatic series system petroleum resin are used, a fiber is added to the thermosetting foamed viscoelasticity layer. |