• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Annual technical conference of the American Society for composites 2009;Technical conference of the American Society for composites 2009;Joint Canadian-American technical conference on composites >Carbon Nanotube Buckypaper Composites with High Nanotube Concentration and Improved Alignment for Structural and Multifunctional Applications
【24h】

Carbon Nanotube Buckypaper Composites with High Nanotube Concentration and Improved Alignment for Structural and Multifunctional Applications

机译：具有高纳米管浓度和改善的排列性的碳纳米管巴克纸复合材料，用于结构和多功能应用

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

摘要

Preformed thin sheets of nanotube networks is an effective material platform for realizing essential high nanotube concentration (>20wt.%), good dispersion and alignment in the production of nanocomposites. In this research, we demonstrated multi-walled carbon nanotube (MWNTs) buckypaper/bismaleimide (BMI) resin composites with high nanotube concentration (～60 wt.%) and improved alignment. Thin sheets of millimeter-long MWNTs were used in this study. Mechanical stretching method was developed to substantially enhance alignment and packing density of MWNTs in the resultant composites. The tensile strength and Young's modulus of the nanocomposites reached 2,088 MPa and 169 GPa, respectively, which are record-high experimental results and comparable to the state-of-the-art unidirectional IM7 carbon fiber-reinforced composites for high-performance aerospace structural applications. The nanocomposites also demonstrated unprecedentedly high electrical conductivity of 5,500 S/cm along the alignment direction. The integration of high mechanical performance and electrical conductance has great potential for developing multifunctional composite structures. New fracture morphology and failure modes due to self-assembling and spreading of nanotube ropes were also revealed.
机译：预先形成的纳米管网络薄板是有效的材料平台，可在生产纳米复合材料时实现必需的高纳米管浓度（> 20wt。％），良好的分散性和排列性。在这项研究中，我们展示了具有高纳米管浓度（〜60 wt。％）和改善的对准性的多壁碳纳米管（MWNTs）布基纸/双马来酰亚胺（BMI）树脂复合材料。在这项研究中使用了毫米长的MWNTs薄片。开发了机械拉伸方法以显着增强所得复合材料中MWNT的排列和堆积密度。纳米复合材料的拉伸强度和杨氏模量分别达到了2088 MPa和169 GPa，这是创纪录的实验结果，可与用于高性能航空结构应用的最先进的单向IM7碳纤维增强复合材料相媲美。 。纳米复合材料沿取向方向还显示出前所未有的高电导率，为5500 S / cm。高机械性能和电导率的集成具有开发多功能复合结构的巨大潜力。还揭示了由于纳米管绳的自组装和散布而产生的新的断裂形态和破坏模式。

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