国产高乙烯基溶聚丁苯橡胶在轮胎胎面胶中的应用

Application of Domestic High-vinyl Solution Styrene-butadiene Rubber in Tire Tread Compound

研究国产高乙烯基溶聚丁苯橡胶(HV-SSBR)标准配方和胎面胶配方胶料的性能,并与国外进口溶聚丁苯橡胶(JK-SSBR)进行比较。结果表明:与JK-SSBR相比,HV-SSBR的相对分子质量较小,含胶率较高;标准配方胶料的焦烧时间较长,硫化速度较快,物理性能和滚动阻力性能较差;胎面配方胶料的焦烧时间较短,硫化速度较快,物理性能和动态力学性能较好,可用于高性能轿车子午线轮胎胎面胶。

The properties of domestic high-vinyl solution styrene-butadiene rubber （HV-SSBR） were investigated and compared with imported solution styrene-butadiene rubber （JK-SSBR） based on a standard compound formulation and a tire tread compound formulation. The results showed that, compared with JK-SSBR,the relative molecular weight of HV-SSBR was lower and the gum content was higher. With the standard formulation,the scorch time of the domestic HV-SSBR compound was longer, the curing rate was higher, and the physical properties and rolling resistance were worse. For the tire tread formulation, the scorch time of the domestic HV-SSBR compound was shorter, the curing speed was faster,and the physical properties and dynamic property were better. The domestic HV-SS- BR can be used in the tread of high performance passenger car radial tires.