| NR硫化返原的研究 Ⅱ.半有效硫化体系 |
| Study on Reversion of NR Part 2.Semi-EV System |
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| DOI： |
| 中文关键词: NR 硫化返原 抗返原助剂 |
| 英文关键词: NR reversion anti-reversion agent |
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| 中文摘要: |
| 研究了半有效硫化体系硫化NR的返原反应，对双-(γ-三乙氧基硅烷基丙基)-四硫化物(Si69)抗返原作用的原因进行了分析。通过测定硫化曲线、物理性能和溶胀指数，考察常见的3种工业化抗返原助剂[Si69，N，N′-间亚苯基双马来酰亚胺(HVA-2)和环己烷二硫代硫酸盐二水合物(HTS)]对NR硫化返原反应的抑制效果。实验结果表明，抗返原助剂可改善NR的热氧化性能；Si69的抗返原效果最好，用量以3份为宜，HVA-2次之，HTS最差。 |
| 英文摘要: |
| The reversion of NR cured with semi-EV system was studied.The effects of 3 commercial anti-reversion agents，i.e.Si69，N，N′-m-phenylene bismaleimide (HVA-2)and cyclohexane dithiosulfate dihydrate(HTS) on the anti-reversion of NR were investigated by determing curing curves，physical properties and swelling indexes.The results showed that the antireversion agents could improve the thermo-oxygen aging properties of NR and the order of their effects was Si69>HVA-2>HTS；and 3 phr of anti-reversion agent was suitable. |
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