| 摘要 |
PURPOSE:To obtain a rubber compsn. which, when vulcanized, gives a vulcanizate having high strengths, stiffness, and hardness without detriment to high resistances to weather, ozone, and heat inherent in EPDM. CONSTITUTION:This rubber compsn. contains 100 pts.wt. rubber component comprising 3-85wt.% ethylene/alpha-olefin/nonconjugated diene copolymer rubber and 15-70wt.% styrene/butadiene random copolymer, 5-50 pts.wt. styrene resin, 20-150 pts.wt reinforcing filler, 0-100 pts.wt. extender oil, and 3-10 pts.wt. sulfur. |
