• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Influence of morphology on the dynamic mechanical properties of hydrogenated acrylonitrile butadiene elastomer/coagent nanodispersions
【24h】

Influence of morphology on the dynamic mechanical properties of hydrogenated acrylonitrile butadiene elastomer/coagent nanodispersions

机译：形态对氢化丙烯腈丁二烯弹性体/助剂纳米分散体动态力学性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Coagents are vinyl monomers that react with free radicals formed by peroxide dissociation and are either grafted to elastomer chains or homopolymerized within a segregated phase to form a crosslinked network. The initial phase distribution within the elastomer matrix is of at-eat importance for the final user properties of a composite material. In this study, the morphology of blends of each of three different coagents, that is, zinc dimethacrylate (ZDMA), N,N'-m-phenylene dimaleimide (HVA-2), and trimethylolpropane trimethacrylate (TMPTMA) on a reinforcing substrate with dicumyl peroxide and hydrogenated acrylonitrile butadiene elastomer after processing was investigated with scanning electron microscopy. The morphology that evolved during processing was then compared to the results obtained from dynamic mechanical analysis (DMA) of the blends. Dynamic mechanical properties were modeled with a continuous relaxation distribution function, the Williams-Landel-Ferry equation, and the modified Guth-Gold equation. In the case of ZDMA and TMPTMA, a microphase and a nanophase evolved during processing, whereas the HVA-2 phase in the blends remained well segregated. The volume fraction of the particles Under 100 nm in ZDMA and TMPTMA blends ranged from 79 to 89%. The DMA results revealed the reinforcing effect of ZDMA and TMPTMA during the glass-transition and in the plateau region, whereas HVA-2 exhibited plasticizer-like behavior. (D 2008 Wiley Periodicals, Inc.
机译：助剂是乙烯基单体，其与由过氧化物解离形成的自由基反应，并接枝到弹性体链上或在分离相中均聚形成交联网络。弹性体基质内的初始相分布对于复合材料的最终用户性能至关重要。在这项研究中，三种不同助剂（即二甲基丙烯酸锌（ZDMA），N，N'-间亚苯基二马来酰亚胺（HVA-2）和三羟甲基丙烷三甲基丙烯酸酯（TMPTMA））的混合物在增强基材上的形态用扫描电子显微镜研究了处理后的过氧化二枯基和氢化的丙烯腈丁二烯弹性体。然后将加工过程中形成的形态与混合物的动态力学分析（DMA）得到的结果进行比较。动态力学性能用连续松弛分布函数，Williams-Landel-Ferry方程和改进的Guth-Gold方程建模。在ZDMA和TMPTMA的情况下，加工过程中会出现微相和纳米相，而共混物中的HVA-2相则保持良好的分离状态。 ZDMA和TMPTMA共混物中100 nm以下颗粒的体积分数为79％至89％。 DMA结果显示ZDMA和TMPTMA在玻璃化转变期间和高原区域具有增强作用，而HVA-2表现出类似增塑剂的行为。 （D 2008 Wiley Periodicals，Inc.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号