碳纳米管增强聚合物复合材料的界面脱黏及应力分布

周丽军; 郭建刚; 亢一澜

doi:10.3788/OPE.20142209.2458

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碳纳米管增强聚合物复合材料的界面脱黏及应力分布

微纳技术与精密机械 | 更新时间：2020-08-13

- 碳纳米管增强聚合物复合材料的界面脱黏及应力分布
- Interfacial debonding and stress characteristics of carbon nanotube reinforced polymer composites
- 光学精密工程 2014年22卷第9期页码：2458-2464
- 作者机构：
  
  1. 天津大学机械工程学院天津市现代工程力学重点实验室天津,300072
  2. 天津职业技术师范大学机械工程学院天津,300222
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目（No.11372216）();国家973重点基础研究发展计划资助项目（No.2012CB937500）()
- DOI：10.3788/OPE.20142209.2458
  中图分类号： TB383;TB332
- 收稿日期：2013-10-17，
  
  修回日期：2013-12-13，
  
  纸质出版日期：2014-09-25
- 稿件说明：
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周丽军, 郭建刚, 亢一澜. 碳纳米管增强聚合物复合材料的界面脱黏及应力分布[J]. 光学精密工程, 2014,22(9): 2458-2464

ZHOU Li-jun, GUO Jian-gang, KANG Yi-lan. Interfacial debonding and stress characteristics of carbon nanotube reinforced polymer composites[J]. Editorial Office of Optics and Precision Engineering, 2014,22(9): 2458-2464
周丽军, 郭建刚, 亢一澜. 碳纳米管增强聚合物复合材料的界面脱黏及应力分布[J]. 光学精密工程, 2014,22(9): 2458-2464 DOI： 10.3788/OPE.20142209.2458.

ZHOU Li-jun, GUO Jian-gang, KANG Yi-lan. Interfacial debonding and stress characteristics of carbon nanotube reinforced polymer composites[J]. Editorial Office of Optics and Precision Engineering, 2014,22(9): 2458-2464 DOI： 10.3788/OPE.20142209.2458.

摘要

碳纳米管和复合材料基体间的界面力学行为是影响复合材料宏观力学性能的重要因素，为此本文利用有限单元法对单壁碳纳米管增强聚合物复合材料的界面脱黏、切应力分布及拔出载荷进行了数值模拟。建立了一个轴对称三圆柱壳模型，引入ABAQUS中的Cohesive单元模拟了单壁碳纳米管和聚合物基体之间的界面层，分析了单壁碳纳米管的长细比、界面强度以及热残余应力等因素对碳纳米管与聚合物基体间的界面切应力以及拔出载荷的影响。模拟结果表明：当单壁碳纳米管的长度变化为50~100 nm、与基体之间的界面强度为50~100 MPa、环境温度变化为100℃ 时，碳纳米管的长细比、界面强度以及由于热失配所引起的残余应力对单壁碳纳米管与聚合物基体间的界面切应力以及拔出载荷有着显著的影响。

Abstract

The interfacial mechanical behavior between Carbon Nanotubes (CNT) and composite matrices has great influence on the mechanical properties of composites

so numerical simulations based on finite element methods were presented to investigate the interfacial debonding

shear stress distributions and pullout forces of Single-walled Carbon Nanotube (SWCNT) reinforced polymer composites. An axisymmetric three-cylinder model was presented

and a cohesive model was applied to simulation of the interfacial layer between the SWCNTs and polymer matrix. The influence of the aspect ratio of SWCNTs

interfacial strength and the residual stress induced by Thermal Expansion Coefficient (TEC) mismatch on the interfacial shear stress and debonding were discussed. The results of numerical simulations show that the aspect ratio of SWCNTs

interfacial strength and the residual stress have great influence on the interfacial shear stress and debonding when the length of SWCNT is 50-100 nm

the interfacial strength is 50-100 MPa and the reduction of environmental temperature is 100℃.

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references

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刘贵立, 杨忠华, 栗青. 碳纳米管增强镁基复合材料长径比对力学性能影响的有限元分析[J]. 科学技术与工程, 2010, 10(23):5630-5633. LIU G L, YANG ZH H, LI Q. Finite element analysis of mechanics properties of aspect ratio of carbon nanotubes reinforced magnesium matrix composite material [J]. Science Technology and Engineering, 2010, 10(23):5630-5633. (in Chinese)

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