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| 两种杯[4]芳烃化合物对天然橡胶耐热氧老化性能的影响及抗氧化机理 |
| Effect of Two Kinds of C-methylcalix[4] Resorcinarene Compounds on Thermo-oxidative Aging Resistance of NR and Its Mechanism |
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| DOI： |
| 中文关键词: 杯[4]芳烃 抗氧剂 天然橡胶 耐热氧老化性能 |
| 英文关键词: C-methylcalix[4] resorcinarene antioxidant NR thermo-oxidative aging resistance |
| 基金项目: |
| 中图分类号:TQ330.38＋2；TQ332.6 |
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| 中文摘要: |
| 将含乙氧基甲基侧链的杯[4]芳烃-1和含硫醚基及正己基侧链的杯[4]芳烃-2作为抗氧剂加入天然橡胶（NR）中，研究其对NR硫化胶物理性能和耐热氧老化性能的影响，并分析其抗氧化机理。结果表明：杯[4]芳烃-1和杯[4]芳烃-2（用量均为1份）对NR硫化胶的物理性能影响均不大，均可有效提高NR硫化胶的耐热氧老化性能；添加杯[4]芳烃-2的NR硫化胶耐热氧老化性能与添加抗氧剂2246S的NR硫化胶相当，优于添加杯[4]芳烃-1的NR硫化胶，这主要归因于杯[4]芳烃-2与NR良好的相容性以及酚羟基与硫醚基的协同抗氧效应。 |
| 英文摘要: |
| Two kinds of C-methylcalix[4] resorcinarene（CMCR） compounds，CMCR-1 with ethoxy- methyl side chains and CMCR-2 with thioether groups as well as hexylthiolmethyl side chains were applied in natural rubber（NR），the effects of the two kinds of CMCR compounds on the physical properties and thermo-oxidative aging resistance of NR vulcanizates were investigated，and the mechanism was also analyzed. The results showed that，when the addition level of CMCR-1 or CMCR-2 was 1 phr，the thermo- oxidative aging resistance of NR vulcanizates was effectively improved，and the physical properties changed little. NR vulcanizates with CMCR-2 possessed similar thermo-oxidative aging resistance as the NR vulcanizates with antioxidant 2246S and better than NR vulcanizates with CMCR-1，which was mainly due to the good compatibility between CMCR-2 and NR matrix as well as the synergistic antioxidative effect between thioether groups and hindered phenol groups. |
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