| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject gel material showing a high damping property in a wide rage of temperature with the peak temperature of the tanδcurve shifted the lower side and a minimal lowering of the tanδvalue at the high temperature region by including a silicone oil. SOLUTION: This gel material is obtained by adding (B) 10-100 pts.wt. softening agent having <1,000 average molecular weight (e.g. paraffin-based oil) and (C) 10-500 pts.wt. silicon oil to (A) 100 pts.wt. styrene-vinylisoprene- styrene copolymer having <=30% styrene content and crosslinking the resultant compound. Furthermore, further, (D) 30-100 pts.wt. filler containing calcium carbonate, e.g. powder obtained by grinding surface-treated calcium carbonate in water with a grinder and having <=2μm particle size is preferably added to the above components.
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