HIGH ATTENUATION COMPOSITION, EARTHQUAKE-PROOF DAMPER, AND ASEISMIC BASE ISOLATION BEARING

摘要

PROBLEM TO BE SOLVED: To provide: a novel high attenuation composition that has high attenuation performance and is capable of forming a high attenuation member whose elastic modulus deterioration after being subjected to a large deformation is as small as possible; and an earthquake-proof damper and an aseismic base isolation bearing, such as architectural structures, which include a viscoelastic body formed using the high attenuation composition as a formation material.;SOLUTION: A high attenuation composition contains a diene rubber having sulfur crosslinking property, not more than 50 pts.mass of an ethylene propylene binary copolymer rubber not having sulfur crosslinking property with respect to 100 pts.mass of the diene rubber, and only a crosslinking ingredient of a sulfur crosslinking system as a crosslinking ingredient. Each of an earthquake-proof damper and an aseismic base isolation bearing includes a viscoelastic body composed of the high attenuation composition.;COPYRIGHT: (C)2015,JPO&INPIT