碳纳米管对碳纤维复合材料导电性能的影响

Effect of CNT to the electric property of carbon fiber composite material

针对在碳纤维表面沿径向生长一定量的碳纳米管后再与树脂基体固化成型为新型纳米复合材料的层合板,采用实验的方法进行对比分析,研究加入碳纳米管后对碳纤维复合材料导电性能所产生的影响。实验主要测量纵向和厚度方向的电导率,重点对比分析类型A(加入碳纳米管)和类型B(不加入碳纳米管)对纵向和厚度方向上的电导率的改善和影响。研究结果表明,加入碳纳米管后会显著提高碳纤维的纵向和厚度方向的电导率,增加幅度约为两个数量级。该实验研究对深入理解和确定纳米复合材料的导电性能和实时损伤监测方面将起到重要作用,为今后的工程应用奠定理论基础。

This paper focuses on a novel type of nanocomposite laminates; this type of material was made by growth of certain amount of carbon nanotubes on the surface of carbon fiber along the radial direction then curing the resin matrix for a new type of nanocomposite laminates, through experimental method to analysis and compare the electrical properties, in order to find the effect of carbon nanotubes addition to the electrical conductivity of this material. Experiments were specially designed to measure the electric conductivity through longitudinal and the thickness direction, in order to mainly analyze the improvement and difference of conductivity between the sample Type A(with CNT) and Type B(without CNT). The results showed that after adding carbon nanotubes, the conductivity of carbon fiber increases significantly about two orders of magnitude through the longitudinal and thickness direction. The experimental results of this study is useful to better understand and determine the conductivity of nanocomposites and will play an important role in damage real-time monitoring for engineering applications.