• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>复合材料シンポシウム讲演要旨集． >Dispersion and reaggregation of nanoparticles in the polypropylene copolymer
【24h】

Dispersion and reaggregation of nanoparticles in the polypropylene copolymer

机译：纳米颗粒在聚丙烯共聚物中的分散和再聚集

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

During the last decade, nanocomposites have attracted great interest at an unprecedented level both in industry and in academia, due to their extraordinary potential to overcome the limit of conventional composite materials. They can achieve a lot of high performance in mechanical propertiesas well as various physical properties such as flame retardance, decreased gas permeability, thermal resistivity, to name a few. These high performance nanocomposites are possible when the nanoparticles are fully dispersed in the polymer matrix. The most heavily used filler material is the aluminum silicates clays. One of them is the montmorillionite (MMT). Besides its intrinsic potential due to high aspect ratio and high surface area, it is environmentally benign material naturally abundant. However, applications of the monmorillonite for the nanocomposite preparation has been faced an obstacle of dispersion because the aluminum silicate clays are hydrophilic whereas most of engineering polymers are hydrophobic, Thus, they are intrinsically incompatible with each other. The solution of this has been sought via the ion exchange reaction by replacing interlayer cations with quarternary alkylammonium or alkyl phosphonium cations. This was the same for polypropylene (PP) nanocomposites which was of practical and significant interest to automotive and packaging industries.
机译：在过去的十年中，由于纳米复合材料具有克服常规复合材料局限性的巨大潜力，因此在工业和学术界都引起了空前的巨大兴趣。它们可以在机械性能以及各种物理性能（例如阻燃性，降低的气体渗透性，热阻性）等方面实现许多高性能。当纳米颗粒完全分散在聚合物基质中时，这些高性能纳米复合材料是可能的。最常用的填充材料是硅酸铝粘土。其中之一是蒙脱石（MMT）。除了由于高纵横比和高表面积而具有的内在潜力外，它还是自然丰富的对环境无害的材料。然而，由于硅酸铝粘土是亲水性的，而大多数工程聚合物是疏水性的，因此将蒙脱石用于纳米复合材料的制备面临着分散的障碍。因此，它们本质上是彼此不相容的。通过离子交换反应寻求解决方案，该方法是用季烷基铵或烷基phospho阳离子代替层间阳离子。聚丙烯（PP）纳米复合材料的情况与此相同，这对汽车和包装行业具有实际意义。

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