| 动态拉伸疲劳对SBR胶料网络结构和物理性能的影响 |
| Effects of dynamic tension fatigue on the structure and physical properties of SBR compounds |
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| DOI： |
| 中文关键词: SBR 白炭黑 动态拉伸疲劳 交联密度 物理性能 动态力学性能 |
| 英文关键词: SBR silica dynamic tension fatigue cross-link density physical property dynamic property |
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| 中文摘要: |
| 研究动态拉伸疲劳对未填充SBR胶料和白炭黑填充SBR胶料网络结构和物理性能的影响。结果表明，随着拉伸疲劳次数的增加，SBR胶料的交联密度减小，且白炭黑填充SBR胶料的交联密度大于未填充白炭黑SBR胶料；拉伸疲劳后SBR胶料产生共轭的端二烯基结构；随着拉伸疲劳次数的增加，未填充和白炭黑填充SBR胶料的物理性能先提高后下降；拉伸疲劳后SBR胶料的弹性模量降低，高弹态温度区间内损耗因子增大。 |
| 英文摘要: |
| The effects of dynamic tension fatigue on the structures and physical properties of unfilled SBR compound and silica-filled SBR compound were investigated.The results showed that the cross-link density of SBR compounds decreased as the number of tension fatigue cycles increased，the cross-link density of silica-filled SBR compound was bigger than that of unfilled SBR compound；the conjugated diene structure was generated at the molecular chain-ends after tension fatigue；when the number of tension fatigue cycles increased，the physical properties of unfilled SBR compound and silica-filled SBR compound increased at first and then decreased；after tension fatigue，the elastic modulus of SBR compounds decreased and the tanδ value in rubbery temperature region increased. |
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