| 摘要 |
PROBLEM TO BE SOLVED: To provide a base isolation structure body, wherein progress of vulcanization, in a rubber plate in a preheating stage, is suppressed to increase an adhesive property between the rubber plate and a metallic plate, while preventing long time of vulcanization time. SOLUTION: A rubber composition, having a temperature dependency index of a tc (10) of 12.0 or more, is used for the rubber plates 2 of a base isolation structure body 1 equipped with a lamination body 4 laminated with the rubber bodies 2 and metallic plates 3. Here, the temperature dependency index of the tc (10) means the tilt of an approximate straight line determined by the least square where In (tc (10)); which is natural logarithm of the tc (10) in a vulcanization curve determined by 'A vulcanization test by a vibration type vulcanization tester' in the JIS-K-6300; is adopted as an axis of an ordinate, and (1/T)×10<3> (T: absolute temperature in the vulcanization test) is adopted as an axis of an abscissa. |
