| 不同硫化体系对溴化丁基橡胶胶料硫化特性的影响研究 |
| Study on Influence of Different Vulcanization Systems on Vulcanization Characteristics of BIIR Compounds |
| 投稿时间：2023-11-20 修订日期：2023-11-20 |
| DOI：10.12136/j.issn.1000-890X.2025.07.0499 |
| 中文关键词: 硫化体系 溴化丁基橡胶 硫化特性 硫化机理 |
| 英文关键词: vulcanization system BlIR sulfurization characteristic vulcanization mechanism |
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| 摘要点击次数: 84 |
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| 中文摘要: |
| 研究不同硫化体系对溴化丁基橡胶（BIIR）胶料硫化特性的影响，并分析各硫化体系在BIIR胶料硫化中的作用机理。结果表明：纯氧化镁硫化体系的BIIR胶料不能进行交联反应，纯硫黄硫化体系的BIIR胶料会发生硫化返原，纯氧化锌体系的BIIR胶料以离子交联反应为主，且氧化锌的离子交联反应速率快于硫黄的自由基交联反应速率；与纯氧化锌硫化体系的BIIR胶料相比，氧化锌/氧化镁硫化体系的BIIR胶料的硫化延缓，且氧化镁起到防焦剂的作用；与纯氧化镁硫化体系的BIIR胶料相比，硫黄/氧化镁硫化体系的BIIR胶料的硫化速率加快，氧化镁既起活化剂的作用，促进硫黄硫化，又作为吸酸剂以捕捉HBr；氧化镁在不同体系中表现出不同的作用，主要是不同硫化体系的硫化机理不同造成的。 |
| 英文摘要: |
| The influence of different vulcanization systems on vulcanization characteristics of the brominated butyl rubber（BIIR） compounds was studied，and the action mechanism of each vulcanization system in the BIIR compound was analyzed.The results showed that，the BIIR compound with pure magnesium oxide vulcanization system could not occured crosslinking reaction，the BIIR compound with pure sulfur vulcanization system would underwent reversion，the vulcanization of the BIIR compound with pure zinc oxide vulcanization system was mainly carried out ion crosslinking reaction，and the ion crosslinking reaction rate of zinc oxide was faster than the free radical crosslinking reaction rate of sulfur.Compared with the BIIR compound with pure zinc oxide vulcanization system，the vulcanization of the BIIR compound with the zinc oxide/magnesium oxide vulcanization system was delayed，and magnesium oxide acted as scorch retarder.Compared with the BIIR compound with pure magnesium oxide vulcanization system，the vulcanization rate of the BIIR compound with sulfur/magnesium oxide vulcanization system was accelerated.Magnesium oxide not only acted as an activator to promote sulfur vulcanization，but also as an acid absorber to capture HBr.Magnesium oxide exhibited different effects in different systems，mainly due to the different vulcanization mechanisms of different systems. |
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