HIGH ATTENUATION COMPOSITION, VIBRATION CONTROL DAMPER AND ASEISMIC BASE ISOLATION BEARING

摘要

PROBLEM TO BE SOLVED: To provide a high attenuation composition that can form a high attenuation member having excellent attenuation performance and exhibiting little change in physical properties when repeated large deformation is applied and to provide a vibration control damper and an aseismic base isolation bearing of an architectural structure and the like that have a viscoelastic body comprising the high attenuation composition as a high attenuation member.SOLUTION: The high attenuation composition is produced by blending two kinds of crosslinkable rubbers composed of a polyisoprene-based rubber and a polybutadiene-based rubber with silica, an alkyl type silylation agent, a phenyl type silylation agent, a rosin derivative and an imidazole compound. The vibration damper and the aseismic base isolation bearing each have a viscoelastic body comprising the high attenuation composition.SELECTED DRAWING: Figure 1