...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polymers for advanced technologies >Morphology, thermal behavior, rheological, and mechanical properties of polypropylene/polystyrene blends based on elongation flow
【24h】

Morphology, thermal behavior, rheological, and mechanical properties of polypropylene/polystyrene blends based on elongation flow

机译：基于伸长率流动的聚丙烯/聚苯乙烯共混物的形态学，热行为，流变学和力学性能

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

Binary blends comprised of polypropylene (PP) and polystyrene (PS) were prepared by a novel eccentric rotor extruder based on elongation flow. The morphology, thermal behavior, rheological and mechanical properties were investigated. As the enhanced mixed dispersion based on the novel extruder, the dispersed PS phase were uniformly dispersed in the PP matrix when the PS not more than 40%, and a distinct cocontinuous phase structure emerged when the PS content was 50%. The size of the dispersed PS phase related to the PS content and the processing flow filed influenced the crystallization behavior and the thermal stability of the blends. The PS droplet with small size could act as a nucleating agent for PP to improve the crystallinity, and PS droplet with large size could promote the thermal and heat transfer between the PS droplets and PP matrix which decreased the thermal stability. The rheological results showed that the compounding with PS into the PP matrix increased the storage and loss modulus as well as the complex viscosity of the materials. When the PS content not more than 20%, the blends showed good impact resistance, and PP/PS blends 30% PS showed good tensile and flexural properties. This study gives a new perspective for the structure and properties of the binary PP/PS blends prepared based on elongation flow.
机译：采用一种基于拉伸流动的新型偏心转子挤出机，制备了由聚丙烯（PP）和聚苯乙烯（PS）组成的二元共混物。对其形貌、热行为、流变性能和力学性能进行了研究。作为基于新型挤出机的增强型混合分散体，当PS含量不超过40%时，分散的PS相均匀地分散在PP基体中，当PS含量为50%时，出现明显的共连续相结构。分散PS相的大小与PS含量和工艺流程有关，影响共混物的结晶行为和热稳定性。小尺寸的PS液滴可以作为PP的成核剂，提高PP的结晶度，而大尺寸的PS液滴可以促进PS液滴与PP基体之间的热传导和传热，从而降低PP的热稳定性。流变学结果表明，在PP基体中加入PS可提高材料的储能模量、损耗模量和复合粘度。当PS含量不超过20%时，共混物表现出良好的抗冲击性能，30%PS的PP/PS共混物表现出良好的拉伸和弯曲性能。本研究为基于延伸流动制备的二元PP/PS共混物的结构和性能提供了新的视角。

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