| 动态伸张疲劳对集成橡胶硫化胶结构及性能的影响 |
| Effect of Dynamic Tensile Fatigue on Structure and Properties of SIBR Vulcanizate |
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| DOI： |
| 中文关键词: 集成橡胶 动态伸张疲劳 物理性能 动态力学性能 微观结构 |
| 英文关键词: SIBR dynamic tensile fatigue physical property dynamic property microstructure |
| 基金项目:国家自然科学基金资助项目（51273099） |
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| 中文摘要: |
| 研究未填充和炭黑填充集成橡胶（SIBR）硫化胶动态疲劳过程中的微观结构、物理性能和动态力学性能。结果表明：在疲劳过程中，SIBR分子链断裂，断裂后的自由端链在周期性应力作用下与空气中的氧气作用生成羰基；未填充和炭黑填充SIBR硫化胶的物理性能降低；随着疲劳程度的增大，炭黑填充SIBR硫化胶的交联密度逐渐降低，25 ℃下的储能模量减小、损耗因子增大，Payne效应减弱。 |
| 英文摘要: |
| During dynamic fatigue process，the microstructure，physical property and dynamic property of unfilled and carbon black filled SIBR vulcanizates were investigated.The results showed that，during the fatigue process，the molecular chain of SIBR cracked to free end chains that reacted with oxygen in the air and generated carbonyl group under cyclic stress；and the physical properties of unfilled and carbon black filled SIBR vulcanizates were decreased.Along with the fatigue degree increased，the crosslinking degree of carbon black filled SIBR vulcanizate was reduced，the storage modulus decreased and the loss factor at 25 ℃ increased，and the Payne effect was weakened. |
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