Effect of Silane Coupling Agent KH550 on Thermal-Oxydative Aging Properties of NR Vulcanizates
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摘要: 研究了硅烷偶联剂KH550对NR硫化胶老化过程中的交联密度和力学性能的影响。结果表明,加入KH550可以减缓交联密度和损耗因子tanδ的变化,有效抑制NR硫化胶的热氧老化,同等老化条件下物理力学性能要好于无KH550填充的NR硫化胶。随着KH550用量的增大,上述硫化胶性能变化的趋势增强。
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关键词:
- 硅烷偶联剂KH550 /
- 热氧老化 /
- 交联密度 /
- 力学性能 /
- 动态力学性能
Abstract: Effects of silane coupling agent KH550 on crosslink density and mechanical properties of NR vulcanizates during thermal-oxydative aging was investigated in this paper.The results showed that under same aging condition,the crosslink density and tanδ of KH550-filled NR vulcanizates change slowly with higher retention of physical mechanical properties.The changes in above mentioned properties are more obvious when the content of KH550 increases.
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