前言 芳纶是芳香族聚酰胺类纤维。美国凯夫拉纤维、国产芳纶14、芳纶1414均属此类。由于芳纶具有高强、高模、耐高低温、耐腐蚀及耐辐照等优异性能,芳纶的各种制品及其复合材料得到宇航、航空及汽车工业等方面的极大重视。近年来,对芳纶纤维的微观结构及物理化学力学性能开展了大量的研究工作。导热性是材料的重要物性之一。芳纶纤维导热性的研究对纤维及其复合材料的研制及应用有相当大的价值,对宇航飞行器上的应用来说,更有其特 Introduction Aramid is an aromatic polyamide fiber. American Kevlar fiber, domestic aramid 14, Kevlar 1414 are such. Due to its high strength, high modulus, high and low temperature resistance, corrosion resistance and radiation resistance, aramid fibers and their composites are valued by aerospace, aviation and automobile industries. In recent years, a great deal of research work has been done on the microstructure and physico-chemical mechanical properties of aramid fiber. Thermal conductivity is one of the important properties of the material. Aramid fiber thermal conductivity of fiber and its composites research and application of considerable value, the application of spacecraft on the more special