ABSTRACT The aim of the work was the investigation of the effect of dicumyl peroxide and different types of co-agents on cross-linking and physical–mechanical properties of vulcanisates based on acrylonitrile–butadiene rubber. First, dicumyl peroxide was applied for cross-linking at different curing temperatures. Based on the achieved results, the optimum temperature and peroxide concentration was chosen for the next experiments, in which organic peroxide was combined with various Type I and Type II co-agents. The results revealed that Type I co-agents take active part in vulcanisation process as they contribute to the increase in cross-link density of vulcanisates. This was reflected in the increase in modulus and hardness and the decrease in elongation at break of vulcanisates. The tensile strength was also improved by the application of Type I co-agents. On the other hand, the decrease in cross-link density and deterioration of physical–mechanical properties was recorded by application of Type II co-agents.

中文翻译：

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过氧化二枯基和 I 型和 II 型助剂对基于丁腈橡胶的胶料交联和物理机械性能的影响

摘要 这项工作的目的是研究过氧化二异丙苯和不同类型的助剂对基于丙烯腈-丁二烯橡胶的硫化橡胶的交联和物理机械性能的影响。首先，在不同的固化温度下应用过氧化二异丙苯进行交联。根据获得的结果，为接下来的实验选择了最佳温度和过氧化物浓度，其中有机过氧化物与各种 I 型和 II 型助剂结合。结果表明，I 类助剂在硫化过程中发挥积极作用，因为它们有助于增加硫化橡胶的交联密度。这反映在硫化橡胶模量和硬度的增加以及断裂伸长率的降低上。拉伸强度也通过应用 I 型助剂得到改善。另一方面，交联密度的降低和物理机械性能的恶化是通过应用 II 类助剂来记录的。