摘要 |
PROBLEM TO BE SOLVED: To provide a vibration-proof rubber excellent in all of a low dynamic-to-static modulus ratio, creep resistance, tension properties (elongation and strength) while maintaining heat resistance, and in particular, suitably usable in a high temperature environment such as an engine room of an automobile. SOLUTION: The vibration-proof rubber composition contains, as a rubber component, natural rubber (NR), ethylene propylene diene rubber (EPDM) and butadiene rubber (BR) in a proportion as a mass ratio of NR+BR/EPDM ranging from 70/30 to 45/55, wherein BR is included in an amount of 10 to 20 parts by mass with respect to 100 parts by mass of the rubber component, and contains only a peroxide as a vulcanizing agent, and zinc acrylate and/or zinc methacrylate as a co-crosslinking agent. COPYRIGHT: (C)2011,JPO&INPIT
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