• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Enhanced foamability of isotactic polypropylene composites by polypropylene-graft-carbon nanotube
【24h】

Enhanced foamability of isotactic polypropylene composites by polypropylene-graft-carbon nanotube

机译：聚丙烯接枝碳纳米管增强了全同立构聚丙烯复合材料的发泡性

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

In this article, utilizing a nucleophilic substitution reaction between epoxy group in polypropylene-graft-glycidyl methacrylate (PP-g-GMA) and carboxyl groups in oxidized carbon nanotubes (O-CNTs), PP-g-CNT was fabricated for reinforcing the interfacial adhesion between CNTs and polypropylene (PP) matrix, favoring the enhancement of melt strength and elastic modulus, i.e., enhancing the foaming ability of PP composites. Cellular structure and thermo-mechanical properties of PP foams were characterized by scanning electron microscopy and dynamic mechanical analysis, respectively. The average cell diameter of PP foams decreased from 289.2 (PP-g-GMA) to 96.7 μm (PP-g-CNT foams with 2.0 wt % O-CNT) and the distribution of cell size also became more uniform. The storage modulus of PP-g-CNT foams increased by nearly 62.5% at -40°C, compared with that of PP-g-GMA foams. This work also provided a new procedure for improving the foam ability and thermo-mechanical property of PP composites.
机译：本文利用聚丙烯-接枝甲基丙烯酸缩水甘油酯（PP-g-GMA）中的环氧基与氧化碳纳米管（O-CNTs）中的羧基之间的亲核取代反应，制备了PP-g-CNT以增强界面碳纳米管与聚丙烯（PP）基体之间的粘附性，有利于增强熔体强度和弹性模量，即增强PP复合材料的发泡能力。通过扫描电子显微镜和动态力学分析分别表征了PP泡沫的孔结构和热机械性能。 PP泡沫的平均孔直径从289.2（PP-g-GMA）降至96.7μm（具有2.0 wt％O-CNT的PP-g-CNT泡沫），孔尺寸的分布也变得更加均匀。与PP-g-GMA泡沫相比，PP-g-CNT泡沫在-40°C下的储能模量提高了近62.5％。这项工作还为改善PP复合材料的发泡能力和热机械性能提供了新的程序。

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