▎ 摘　　要

NOVELTY - Rubber composition comprises 100 pts. wt. raw rubber, 8-50 pts. wt. reinforcing filler, 0.5-3 pts. wt. vulcanizing agent, 1-3 pts. wt. accelerator, 2-8 pts. wt. anti-aging agent, 4-10 pts. wt. active agent, 3-10 pts. wt. plasticizer, 0.5-3 pts. wt. tear resistant auxiliary agent, and 0.5-3 pts. wt. leveling agent. The specific preparation method comprises e.g. after rubber breaking, roller plasticating, cooling, adding raw rubber into the internal mixer, automatic pressurizing and mixing; adding active agent, anti-aging agent, plasticizer, anti-tearing resin, leveling agent, automatic pressurizing and mixing; filling reinforcing agent, mixing; discharging glue, adding vulcanizing agent and accelerant, using cutting knife; sweeping; turning on roller, and thinning USE - Rubber composition is used for shock absorption product of commercial vehicle. Uses include but are not limited to automobile shock absorber, engine suspension and chassis lining. ADVANTAGE - The commercial vehicle damping rubber composition has low dynamic and static ratio, high temperature resistant dynamic fatigue performance, better fatigue resistance, better mechanical property and damping performance, and prolongs the service life of the damping component. DETAILED DESCRIPTION - Rubber composition comprises 100 pts. wt. raw rubber, 8-50 pts. wt. reinforcing filler, 0.5-3 pts. wt. vulcanizing agent, 1-3 pts. wt. accelerator, 2-8 pts. wt. anti-aging agent, 4-10 pts. wt. active agent, 3-10 pts. wt. plasticizer, 0.5-3 pts. wt. tear resistant auxiliary agent, and 0.5-3 pts. wt. leveling agent. The raw rubber is a composition of 50-85 pts. wt. natural rubber, 10-30 pts. wt. isoprene rubber and 5-20 pts. wt. butadiene-isoprene copolymerized rubber. The specific preparation method comprises: (1) after rubber breaking, using open mill two sections of plasticating, roller plasticating for 12 minutes, cooling, after 8 hours, performing the next plasticating, plasticity is 3.3; (2) maintaining feeding temperature at 80 ℃, adding raw rubber into the internal mixer, automatic pressurizing and mixing; adding active agent, anti-aging agent, plasticizer, anti-tearing resin, leveling agent, automatic pressurizing and mixing; after minute, filling reinforcing agent, automatic pressurizing banburying; after 4 minutes, sweeping, automatically pressurizing and mixing; discharging glue after 2 minutes; the glue discharging temperature is 140 ℃; (3) opening mill for one section processing, the roller distance is 2 mm, the roller temperature is 60℃, thinning for three times; turn on the roller distance at 6 mm, tamping for 2 minutes; setting the roller distance to be 8 mm, and taking out the sheet; (4) opening mill second section processing, the roller distance is 6 mm, the roller temperature is 60℃, heat smelting for 2 minutes; turn on distance is adjusted to 2 mm, thinning one time; adding vulcanizing agent and accelerant, turning, using cutting knife; sweeping; turning; using cutting knife for 2 times; turning on electric fan, mashing glue for 2 minutes; turning on roller, distance is adjusted to 2 mm, thinning for 3 times; the roller distance is adjusted to 10 mm, and lower strip to obtain the product.