溶聚丁苯橡胶2557-A在轮胎中的应用

Application of solution polymerized styrene-butadiene rubber 2557-A in tire

按照纯炭黑配方,将溶聚丁苯橡胶(SSBR,牌号为2557-A)同乳聚丁苯橡胶(ESBR,牌号为1712)对比应用于全钢和半钢子午线轮胎胎冠胶配方中,确定了合适的胎冠胶配方,且进行了轮胎的试制和性能检测。结果表明,与ESBR 1712全钢胎冠胶相比,同等用量SSBR 2557-A的胎冠胶拉伸强度、定伸应力、Akron磨耗性能和压缩生热等性能均得到提高,但DIN磨耗性能有所下降,且具有更优的抗湿滑性和更低的滚动阻力;与ESBR 1712半钢胎冠胶相比,SSBR 2557-A胎冠胶具有优异的抗湿滑性能,而其他性能相差不大;采用SSBR 2557-A全钢子午线轮胎胎冠胶配方试制的轮胎顺利通过了耐久性试验;采用SSBR 2557-A半钢子午线轮胎胎冠胶配方试制轮胎的外缘尺寸、强度、脱圈阻力和高速性能、耐久性均达到国家标准,且还能够较大幅度提高轮胎的抗湿滑性能和滚动噪音性能。

In accordance with the pure carbon black formula,solution polymerized styrene-butadiene rubber（SSBR,grade 2557-A） and emulsion styrene-butadiene rubber（ESBR,grade 1712） were applied to crown rubbers of all-steel and semi-steel radial tires seperately,their application results were compared,and the acceptable crown rubber formula of SSBR 2557-A was achieved.The all-steel and semi-steel radial tires were trial-produced,and their performances were tested.The results showed that compared to ESBR 1712 all-steel crown vulcanizate,the tensile strength,modulus at 100% and 300%,abrasion resistance（Akron）,compression heat built-up as well as the balance between wet skid resistance and rolling resistance of the equivalent SSBR 2557-A crown vulcanizate increased,but abrasion resistance（DIN） decreased.And compared to ESBR 1712 semi-stell crown vulcanizate,the equivalent SSBR 2557-A also improved semi-steel crown vulcanizate in skid resistance without changing any other performances.The trial tire based on SSBR 2557-A all-steel crown rubber formula passed endurance test,and the tire based on SSBR 2557-A semi-steel crown rubber formula met the national standard in outer dia,strength,unseating resistance,high-speed performance and durability,in addition,it had substantial high wet skid resistance and noise performance.