碳纳米管填充复合材料体系的导热模型研究进展

Research progress on thermal conductivity models of carbon nanotube-filled composite systens

摘要:

综述了以聚合物为基体的碳纳米管填充复合材料导热模型，分析了复合材料热传导体系中碳纳米管(CNTs)填料的作用机制，归纳了均质模型、非均质模型和随机分散模型等，总结了导热模型常用的数值计算方法。这些模型丰富了导热理论，可以对复合材料导热系数进行初步预测，但在数值上都存在近似或者简化处理，对碳纳米管复合材料预测广谱性较差，若要提高预测准确性，需要更深入探究分子界面处的热阻。

Abstract:

The thermal conductivity models of polymer-based carbon nanotube-filled composites were reviewed, and the mechanism of carbon nanotubes (CNTs) filled in composite thermal conduction systems were analyzed. The homogeneous, heterogeneous, random dispersion models as well as the calculation methods commonly used in heat conduction were summarized. The models enrich the thermal conductivity theory and can make preliminary predictions of the thermal conductivity of composite materials, but there are approximate or simplified treatments in terms of numerical values. The prediction of carbon nanotube composite materials cannot be used widely. To improve the accuracy of prediction, more attention should be paid on the thermal resistance at the molecular interface.