Deep insight into interaction mechanisms between ESBR and silica modified by different silane coupling agents,Journal of Applied Polymer Science

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Deep insight into interaction mechanisms between ESBR and silica modified by different silane coupling agents
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-02-17 , DOI: 10.1002/app.49112
Chen Wang ₁ , Ai Li ₂ , Miqiu Kong ₂ , Qi Yang ₁ , Yadong Lv ₁ , Yajiang Huang ₁ , Guangxian Li ₁

Affiliation

In this study, the interaction mechanisms of different silane coupling agents on the mechanical properties, dynamic viscoelastic properties, and rheological properties of emulsion styrene‐butadiene rubber (ESBR)/silica composites were investigated. It is found that the comprehensive performances are improved by the addition of silane coupling agents and the optimal performance is exhibited in ESBR filled with 50 phr modified silica. Moreover, with the addition of the bis‐(3‐triethoxysilylpropyl)‐tetrasulfide modified silica, the wet skid resistance of composites is significantly enhanced by 14.0%, whereas by the addition of 3‐octanoylthio‐1‐propyltriethoxysilane modified silica, the rolling resistance is remarkably reduced by 19.6% and the processing safety is improved. It can be attributed to the increased bound rubber contents induced by the enhanced interactions between the modified silica and rubber matrix characterized by rheological properties. Furthermore, it is pointed out that the second layer bound rubber plays a dominant role in the improved properties of the composites.

中文翻译：

深入了解ESBR与不同硅烷偶联剂改性的二氧化硅之间的相互作用机理

在这项研究中，研究了不同的硅烷偶联剂对乳胶丁苯橡胶/二氧化硅复合材料的机械性能，动态粘弹性和流变性能的相互作用机理。发现通过添加硅烷偶联剂可以改善综合性能，并且在填充有50 phr改性二氧化硅的ESBR中表现出最佳性能。此外，通过添加双（3-三乙氧基甲硅烷基丙基）-四硫化物改性的二氧化硅，复合材料的耐湿滑性显着提高了14.0％，而通过添加3-辛酰基硫基-1-丙基三乙氧基硅烷改性的二氧化硅，滚动阻力显着降低了19.6％，提高了加工安全性。这可以归因于由改性的二氧化硅和以流变性质为特征的橡胶基质之间增强的相互作用引起的结合橡胶含量的增加。此外，要指出的是，第二层结合的橡胶在复合材料的改进性能中起着主导作用。

更新日期：2020-02-17

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