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碳纳米管材料在热科学领域的应用极具潜力.本文在总结近20年关于碳纳米管热导率性质研究的基础上,采用对应态原理的方法,提出了与碳纳米管具体结构、阵列密度等因素无关的无量纲化热导率概念,按此方法将原本绝对值相差巨大的3组实验数据处理之后,发现它们相互吻合良好.以往的实验结果中,单根碳纳米管的结果往往比碳纳米管宏观材料的值大1个数量级,本文分析认为主要原因是受碳纳米管体积填充系数的影响,如果把单根碳纳米管的数据进行修正处理,两者的差距就在合理范围内.另外,碳纳米管的热导率还受多种因素的综合作用,本文针对其中几种主要因素进行了分析.
The application of carbon nanotubes in thermal science has great potential.This paper summarizes the recent research on the thermal conductivity of carbon nanotubes in recent 20 years, Density and other factors unrelated to the concept of dimensionless thermal conductivity, according to this method will be the absolute value of a huge difference between the three sets of experimental data processing, and found that they are consistent with each other. Previous experimental results, the results of single carbon nanotubes often Which is one order of magnitude larger than the macroscopic material of carbon nanotubes. The main reason for this paper is that it is affected by the volumetric filling coefficient of carbon nanotubes. If the data of single carbon nanotubes are corrected, the gap between the two is within a reasonable range In addition, the thermal conductivity of carbon nanotubes is also affected by a combination of many factors, this article analyzes several of the major factors.