...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymer Composites >Study and evaluation of dispersion of polyhedral oligomeric silsesquioxane and silica filler in polypropylene composites
【24h】

Study and evaluation of dispersion of polyhedral oligomeric silsesquioxane and silica filler in polypropylene composites

机译：多面体低聚体硅氧烷和二氧化硅填料分散在聚丙烯复合材料中的研究与评价

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

Various methods were used for evaluation of homogeneity of polypropylene (PP) matrix composites with octakis([n-octyl]dimethylsiloxy)octasilsesquioxane, octakis([n-octadecyl]dimethylsiloxy)octasilsesquioxane, and silica (SiO2) fillers. The filler dispersion was determined on the basis of the results from the wide-angle X-ray scattering (WAXS) analysis, from the tests of selected mechanical properties, from scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy and from the decomposable entropic descriptor method. The use of different methods allowed to evaluate homogeneity of PP composites on various levels and with different precisions. The dispersion degree was found to be mostly depended on the kind and amount of the filler used. The presence of long n-alkyl chain substituents in POSS molecules greatly improved the level of filler dispersion in the polymer matrix in comparison to silica which was visually assessed by SEM. The WAXS method revealed the formation of filler aggregates in the PP matrix which influenced the structural characteristic of PP composites and changed the mechanical properties of those materials. However, the decomposable entropic descriptor method provided the possibility of quantitative and the most objective estimation of homogeneity of the obtained composite materials. POLYM. COMPOS., 40:1354-1364, 2019. (c) 2018 Society of Plastics Engineers
机译：各种方法用于评价聚丙烯（PP）基质复合材料的均匀性，用八十八（[正辛基]二甲基硅氧烷）八硅晶氧烷，八烷基酮（[正八十二烷基]二甲基硅氧烷）octasilsquio糖胺和二氧化硅（SiO 2）填料。基于从扫描电子显微镜（SEM）的广泛角X射线散射（蜡）分析的结果，从扫描电子显微镜（SEM），从扫描电子显微镜（SEM）和能量分散X射线光谱和来自的填充物分散可分解的熵描述符方法。使用不同的方法可以在各种水平上评估PP复合材料的均匀性和不同的精度。发现分散度主要取决于所用填料的种类和量。与SEM目视评估的二氧化硅相比，POSS分子中的长N-烷基链取代基的存在大大提高了聚合物基质中的填充分散水平。蜡方法揭示了PP基质中填料聚集体的形成，其影响了PP复合材料的结构特征，并改变了这些材料的机械性能。然而，可分解的熵描述符方法提供了所得复合材料的定量和最客观估计的可能性。聚合物。 Compos。，40：1354-1364,2019。（c）2018年塑料工程师协会

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