...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>AIChE Journal >Combinatorial Development of Polymer Nanocomposites Using Transient Processing Conditions in Twin Screw Extrusion
【24h】

Combinatorial Development of Polymer Nanocomposites Using Transient Processing Conditions in Twin Screw Extrusion

机译：使用双螺杆挤出中的瞬态加工条件进行聚合物纳米复合材料的组合开发

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new approach is presented for combinatorial development of polymer nanocomposites with compositional gradients (CGs). The CGs were developed using transient processing conditions in twin screw extrusion with small quantities of expensive nano-scale fillers. Convolution of step input with normalized residence volume distributions (RVDs) was used to establish the processing—structure relationship for the CGs. The normalized RVD was established as a process characteristic independent of processing conditions and measured in situ using an optical probe. The CG determined nondes-tructively using the new combinatorial approach was validated through comparison with more time-consuming and destructive thermogravimetric analysis. The CG could also be established with relatively inexpensive microscale fillers using the normalized RVD obtained with nanoscale fillers, suggesting that transient effects of the mixing process are independent of the size of the filler. Finally, structure-property relationship of combinatorially developed polymer nanocomposites was established by characterizing their dynamic mechanical behavior (storage modulus, G', and loss modulus, G"). The dynamic mechanical behavior of the combinatorially developed composites correlated well with the batch-processed ones, indicating that the transient mixing conditions in extrusion do not affect the material properties.
机译：提出了一种新的方法用于组合开发具有组成梯度（CGs）的聚合物纳米复合材料。 CGs是在双螺杆挤出中使用瞬态加工条件与少量昂贵的纳米级填料共同开发的。步骤输入与归一化居住体积分布（RVD）的卷积用于建立CG的处理结构关系。建立归一化RVD作为独立于加工条件的加工特性，并使用光学探针进行原位测量。通过与更耗时和更具破坏性的热重分析进行比较，验证了使用新的组合方法非确定性确定的CG。 CG也可以使用相对便宜的微米级填料通过使用纳米级填料获得的归一化RVD建立，这表明混合过程的瞬态效果与填料的尺寸无关。最后，通过表征其动态力学性能（储能模量G'和损耗模量G”），建立了组合开发的聚合物纳米复合材料的结构-性能关系。组合开发的复合材料的动态力学性能与分批处理的相关性很好。表示挤出过程中的瞬时混合条件不会影响材料性能。

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