| 离子液体与偶联剂并用对白炭黑填充NR性能的影响 |
| Effects of the Combination of Ionic Liquid and Coupling Agent on the Properties of NR Filled with Silica |
| 投稿时间：2018-04-09 修订日期：2018-04-09 |
| DOI： |
| 中文关键词: 白炭黑 Si-69 B-69 离子液体 NR |
| 英文关键词: silica Si-69 B-69 ionic liquids NR |
| 基金项目: |
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| 中文摘要: |
| 本文用偶联剂Si-69、B-69和离子液体[溴化1-丁基-3-甲基咪唑(BMIM)]单独改性白炭黑,同时用两种偶联剂分别与离子液体BMIM并用改性白炭黑,对比研究了其对NR性能的影响。结果表明,与未改性白炭黑相比,Si-69、B-69和BMIM改性白炭黑后,填充NR的硫化速率加快,Payne效应减弱,力学性能改善,滚动阻力降低；其中,BMIM改性白炭黑填充NR的综合性能最优,其拉伸强度和撕裂强度比未改性白炭黑填充NR提高了一倍。与偶联剂单独改性白炭黑相比,偶联剂与BMIM并用改性白炭黑后,填充NR的t90进一步缩短,填料-橡胶相互作用更强,交联密度更大,力学性能进一步提高,滚动阻力变得更低。 |
| 英文摘要: |
| Two kinds of coupling agents (Si-69 and B-69), an ionic liquid (1-Butyl-3-methylimidazolium bromide, abbreviated as BMIM) and the combination of coupling agents and BMIM, were incorporated into NR filled with silica. The properties of compounds and vulcanizates of NR filled with unmodified and modified silica were investigated. The results showed that, compared to modified silica/NR, NR filled with Si-69, B-69 or BMIM had faster vulcanization rate and weaker Payne effect which generated better mechanical properties and lower rolling resistance. And the NR filled with silica modified by BMIM had the most excellent overall performance whose tensile strength and tear strength were two times more than NR filled with silica unmodified. In contrast to NR filled with silica which was modified only by coupling agents, for silica/NR modified by both BMIM and coupling agent, the optimum curing time was further shortened, the crosslinking density was greater, the interaction between modified silica and NR was stronger, then the mechanical properties were further improved and the rolling resistance got an additional decline. |
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