| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration-proof rubber composition reduced in dynamic-to-static modulus ratio without impairing the other properties including mechanical strength, fatigue resistance and resistance to loss of bulkiness. SOLUTION: The vibration-proof rubber composition comprises 100 pts.wt. of a rubber component, i.e. natural rubber or a natural rubber-containing blend rubber, and 15-80 pts.wt. of carbon black≤40 m<SP>2</SP>/g in nitrogen adsorption specific surface area(N<SB>2</SB>SA) and 90-140 mL/100 g in dibutyl phthalate oil absorption(DBP). For this vibration-proof rubber composition, it is preferable that a terminal-modified butadiene rubber modified with an amine derivative be contained at 10-80 pts.wt. as a rubber component in 100 pts.wt. of the total rubber component. COPYRIGHT: (C)2006,JPO&NCIPI
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