...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Research >Role of hierarchical morphology of helical carbon nanotube bundles on thermal expansion of polymer nanocomposites
【24h】

Role of hierarchical morphology of helical carbon nanotube bundles on thermal expansion of polymer nanocomposites

机译：螺旋碳纳米管束的分层形态对聚合物纳米复合材料热膨胀的作用

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

The thermal expansion behavior of polymer carbon nanotube (CNT) nanocomposites was investigated, and a micromechanical model was proposed to explain the highly nonlinear dependence of the coefficient of thermal expansion of the nanocomposite with CNT content for the CNT/polyimide nanocomposite. The microscopic analysis of CNT/polyimide matrix showed homogeneous dispersion of bundles composed of CNTs. Therefore, the proposed model to predict the thermal expansion behavior of the nanocomposite considered a random, homogeneous distribution of CNT bundles with a hierarchical arrangement of helical CNTs within the polymeric matrix. The CNT bundle morphology influenced the thermal expansion response of the nanocomposite through (i) bundle volume fraction and (ii) degree of helicity, affecting thermo-mechanical properties of the bundle. The effective, homogenized, properties of CNT bundles were determined by the elasticity based solution of the layered cylinder model. Bundle effective properties were used in the micromechanical model implementing the homogenized strain rule of the mixture expression to predict the thermal expansion behavior of nanocomposite in a wide range of CNT volume contents. The proposed micromechanical analytical model was found to correlate closely with the experimental results for polyimide/CNT nanocomposite films as measured using a digital image correlation method.
机译：研究了聚合物碳纳米管（CNT）纳米复合材料的热膨胀行为，并提出了一个微力学模型来解释纳米复合材料的热膨胀系数与CNT含量的高度非线性相关性。碳纳米管/聚酰亚胺基体的微观分析表明，由碳纳米管组成的束均匀分散。因此，所提出的预测纳米复合材料热膨胀行为的模型考虑了碳纳米管束的随机，均匀分布，并且在聚合物基体内有螺旋状碳纳米管的分层排列。 CNT束形态通过（i）束体积分数和（ii）螺旋度影响了纳米复合材料的热膨胀响应，从而影响了束的热机械性能。 CNT束的有效，均质的性能由分层圆柱模型的基于弹性的解决方案确定。在实现混合物表达的均匀应变规则的微力学模型中，将束有效特性用于预测纳米复合材料在各种CNT体积含量内的热膨胀行为。发现所提出的微机械分析模型与使用数字图像相关方法测量的聚酰亚胺/ CNT纳米复合膜的实验结果紧密相关。

著录项

  • 来源
    《Journal of Materials Research》 |2017年第14期|2738-2746|共9页
  • 作者

    Oleksandr G. Kravchenko; Xin Qian; Sergii G. Kravchenko; Rocio Misiego; R. Byron Pipes; Ica Manas-Zloczower;

  • 作者单位

    Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, USA;

    Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, USA;

    School of Aeronautics and Astronautics, Purdue University, Indiana Manufacturing Institute, West Lafayette, Indiana 47906-1168, USA;

    SABIC, Murcia 30390, Spain;

    School of Aeronautics and Astronautics, Materials Engineering and Chemical Engineering, Purdue University, Indiana Manufacturing Institute, West Lafayette, Indiana 47906-1168, USA;

    Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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