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  • ISSN 1006-3080
  • CN 31-1691/TQ

聚丙烯/碳纳米管复合材料的结构与导电性能:注塑工艺与膨胀石墨的影响

叶靖 方建鹏 张玲 李春忠

叶靖, 方建鹏, 张玲, 李春忠. 聚丙烯/碳纳米管复合材料的结构与导电性能:注塑工艺与膨胀石墨的影响[J]. 华东理工大学学报(自然科学版), 2017, (5): 606-613. doi: 10.14135/j.cnki.1006-3080.2017.05.002
引用本文: 叶靖, 方建鹏, 张玲, 李春忠. 聚丙烯/碳纳米管复合材料的结构与导电性能:注塑工艺与膨胀石墨的影响[J]. 华东理工大学学报(自然科学版), 2017, (5): 606-613. doi: 10.14135/j.cnki.1006-3080.2017.05.002
YE Jing, FANG Jian-peng, ZHANG Ling, LI Chun-zhong. Structure and Electric Conductivity of Polypropylene/Carbon Nanotubes Composites:Effect of Injection Process and Expanded Graphite[J]. Journal of East China University of Science and Technology, 2017, (5): 606-613. doi: 10.14135/j.cnki.1006-3080.2017.05.002
Citation: YE Jing, FANG Jian-peng, ZHANG Ling, LI Chun-zhong. Structure and Electric Conductivity of Polypropylene/Carbon Nanotubes Composites:Effect of Injection Process and Expanded Graphite[J]. Journal of East China University of Science and Technology, 2017, (5): 606-613. doi: 10.14135/j.cnki.1006-3080.2017.05.002

聚丙烯/碳纳米管复合材料的结构与导电性能:注塑工艺与膨胀石墨的影响

doi: 10.14135/j.cnki.1006-3080.2017.05.002
基金项目: 

国家自然科学基金(91534202,51673063);上海市基础研究重点项目(15JC1401300);上海市社会发展项目(17DZ1200900);上海市教育委员会科研创新计划项目;中央高校基本科研业务费专项资金(222201718002)

Structure and Electric Conductivity of Polypropylene/Carbon Nanotubes Composites:Effect of Injection Process and Expanded Graphite

  • 摘要: 获得高性能碳纳米管(MWCNT)增强聚合物复合材料的关键在于控制碳纳米管在聚合物基体中的分布与取向。传统的注塑成型工艺下,碳纳米管容易发生取向,其表面电阻率远远大于模压成型时的电阻率。本文通过调整注塑工艺改变剪切场实现对碳纳米管在基体中分布与取向的控制。结果表明:在低熔体温度和高注射速度下,碳纳米管局部取向,导电性能下降;而在高熔体温度和低注射速度下,碳纳米管分散良好,导电网络优良,聚丙烯/碳纳米管(PP/MWCNT)注塑制品的导电性能得到有效提升,其表面电阻率下降了约5个数量级。加入膨胀石墨(EG)有增强导电网络的作用,使PP/MWCNT/EG复合材料的导电网络更为完善,其导电性能进一步提高,尤其在低熔体温度和高注射速度下最为明显;随着EG含量的增加,PP/MWCNT/EG的表面电阻率下降了3个数量级。

     

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出版历程
  • 收稿日期:  2016-12-19
  • 刊出日期:  2017-10-28

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