| 摘要 |
PURPOSE:To obtain a rubber composition for vibration-insulating rubber having high heat-resistance, low dynamic ratio characteristics and good adhesivity to metals by using sulfur and bismaleimide as vulcanizers and using a specific amount of carbon black having a specific particle size as a reinforcing agent. CONSTITUTION:A vibration-insulating rubber composition composed mainly of natural rubber or a natural rubber and a synthetic diene rubber is compounded with (A) a vulcanizer composed of (A1) sulfur and (A2) 0.5-5 pts. (PHR) of bismaleimide (A2/A1 is 0.5-10) and (B) a reinforcing agent consisting of a carbon black (preferably FEF, SRFFT, etc., having particle diameter of >=35mmu) satisfying the formula wherein X is particle diameter (mmu) and Y is compounding amount (PHR) provided that when the calculated result exceeds 80, Y=80. The composition is used mainly as an engine mount. |
