...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Adhesion Science and Technology: The International Journal of Theoredtical and Basic Aspects of Adhesion Science and Its Applications in All Areas of Technology >Mechanical and dismantlement adhesion properties of grafted EPDM-silica hybrid
【24h】

Mechanical and dismantlement adhesion properties of grafted EPDM-silica hybrid

机译：接枝三元乙丙橡胶-二氧化硅杂化物的机械粘合力和拆除粘合力

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

This study was carried out to confirm the effects of functional groups that could derive secondary bonding and silica contents on mechanical properties and thermo-reversible characteristics of grafted EPDM-silica composites, which was produced by blending silica or introducing silica hybrid through ionic bonding after grafting methacrylic acid onto EPDM. The storage modulus of graft copolymer had appeared to be higher than cross-linked EPDM vulcanizate at room temperature, and decreased by a gentle slope as temperature increased, and then began to decrease more sharply as secondary bonding force became weaker at higher temperature. When silica hybrid was introduced through ionic interaction, storage modulus and mechanical properties were found to be higher due to not only hydrogen and ionic bonding, but also nanosized silica particles, which were bonded to the elastomer structure in uniformed distribution. When the graft copolymer had only hydrogen bonding, recycling of the elastomer caused mechanical properties to be reduced by 20-30%. However, the recycling characteristics of elastomers having both hydrogen and ionic bonding were excellent as more than 90% of their initial mechanical properties were maintained even after five times of reprocessing. Graft copolymer composite had better adhesion strength with other rubber due to increased polarity than EPDM, and dismantlement of bonded adherends was possible by applying heat treatment of microwave.
机译：进行这项研究是为了确定可以衍生二级键和二氧化硅含量的官能团对接枝EPDM-二氧化硅复合材料的机械性能和热可逆特性的影响，该复合材料是通过掺混二氧化硅或在接枝后通过离子键合引入二氧化硅杂化体制成的甲基丙烯酸加到EPDM上。接枝共聚物的储能模量在室温下似乎高于交联的EPDM硫化胶，并随着温度的升高而以平缓的斜率下降，然后随着高温下二次键合力的减弱而开始急剧下降。当通过离子相互作用引入二氧化硅杂化体时，不仅由于氢和离子键合，而且由于纳米尺寸的二氧化硅颗粒（其均一地结合到弹性体结构上），储能模量和机械性能也更高。当接枝共聚物仅具有氢键时，弹性体的再循环导致机械性能降低20-30％。但是，具有氢键和离子键的弹性体的再利用特性极好，因为即使经过五次再加工也可以保持其初始机械性能的90％以上。接枝共聚物复合物由于增加了极性，因此与EPDM相比具有更好的与其他橡胶的粘合强度，并且可以通过微波热处理来去除粘结的被粘物。

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