端基改性溶聚丁苯橡胶在高性能轮胎胎面中的应用

Application of Modified Solution Styrene-Butadiene Rubber in High Performance Tire Tread

研究不同种类端基改性溶聚丁苯橡胶(SSBR)在高性能轮胎胎面中的应用。结果表明:SSBR中结合苯乙烯和乙烯基含量以及端基改性方法的变化,对胶料的流变性能、物理性能和动态力学性能有一定影响。随着SSBR中结合苯乙烯和乙烯基含量的增大,胶料0和60℃下的损耗因子均增大,胎面胶的机湿滑性能提高,滚动阻力增大。

The application of solution styrene-butadiene rubber（SSBR）,which was modified at the ends of molecular chain by different kinds of functional modifiers,in high performance tire tread was investigated.The results showed that the styrene content,vinyl content and the type of chain-end modification influenced the rheological,physical and dynamic properties of the SSBR compounds.The SSBR with higher styrene and vinyl content had higher loss factor（at 0 and 60℃）,which indicated that the wet grip of the tread was better and the rolling resistance was higher.