Abstract Thermal conductivity of carbon fibers (CFs), being one of the important properties, is not easily quantified due to practical difficulties in measuring it. We suggest a universal correlation between the thermal conductivity of CFs and their electrical and mechanical properties in order to estimate it without direct measurement. Crystalline structural information did not show a clear correlation with thermal conductivity, especially for commercially available polyacrylonitrile- or isotropic pitch-based CFs that have less than a few nanometers of La and Lc. However, in a correlation between tensile modulus and thermal conductivity, there are three distinct regions and two properties increase with a different inclination in each region. We envisage tensile modulus to be utilized to estimate thermal conductivity without a direct measurement for all kinds of CFs.

中文翻译：

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将碳纤维的热导率与机械和结构特性相关联

摘要 碳纤维（CFs）的热导率是重要的特性之一，由于测量的实际困难，不容易量化。我们建议 CF 的热导率与其电气和机械性能之间存在普遍相关性，以便在不直接测量的情况下对其进行估计。晶体结构信息没有显示出与热导率的明显相关性，特别是对于具有小于几纳米 La 和 Lc 的市售聚丙烯腈或各向同性沥青基 CF。然而，在拉伸模量和热导率之间的相关性中，存在三个不同的区域，并且每个区域的两个特性随着不同的倾斜度增加。