| 溶聚丁苯橡胶2557A的结构与性能研究 |
| Structure and Properties of Solution-polymerized SBR2557A |
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| DOI： |
| 中文关键词: 溶聚丁苯橡胶 乳聚丁苯橡胶 抗湿滑性能 滚动阻力 胎面胶 |
| 英文关键词: SSBR ESBR wet skid resistance rolling resistance tread compound |
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| 中文摘要: |
| 研究溶聚丁苯橡胶（SSBR）2557A的结构和性能，探讨其对轮胎胎面胶抗湿滑性能和滚动阻力的影响，并与乳聚丁苯橡胶（ESBR）1712E进行对比。结果表明：与ESBR1712E相比，SSBR2557A的乙烯基含量高，数均和重均相对分子质量大，相对分子质量分布指数小；混炼胶的焦烧时间长，硫化速度稍慢；硫化胶的邵尔A型硬度和定伸应力稍高，拉断伸长率减小，压缩生热和压缩永久变形较低，其他物理性能差别不大，不同应变下的剪切弹性模量、剪切损耗模量和损耗因子（tanδ）均较小，0 ℃下的tanδ值较大，60 ℃下的tanδ值较小。采用SSBR2557A的胎面胶在抗湿滑性能和滚动阻力方面可达到较好的平衡。 |
| 英文摘要: |
| The structure and properties of solution-polymerized styrene-butadiene rubber （SSBR） 2557A were investigated，and the rolling resistance and wet skid resistance of tread compound of tires with SSBR2557A were analyzed and compared with emulsion-polymerized styrene-butadiene rubber（ESBR） 1712E.The results showed that，compared with ESBR1712E，SSBR2557A possessed higher vinyl content，larger number-average and weight-average relative molecular weight，narrower relative molecular weight distribution，SSBR2557A compound possessed longer scorch time and slower curing rate，and SSBR2557A vulcanizate possessed slightly higher Shore A hardness and modulus，lower elongation at break，lower compression heat build-up，lower compression set，and similar properties in other physical properties.Under the condition of different strain，the shearing modulus，shearing loss modulus and loss index（tanδ） of SSBR2557A vulcanizate were samller.SSBR2557A vulcanizate possessed higher tanδ at 0 ℃ and lower tanδ at 60 ℃.The tread compound with SSBR2557A achieved better balance between wet skid resistance and rolling resistance. |
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