Epoxy/aluminum-exfoliated graphite nanoplatelet (Al-xGnP) composites were prepared. Prior to the preparation of the composite, two types of Al-xGnP hybrid powder were prepared, one is fully inserted xGnP in aluminum (Al) flake and the other is partially inserted xGnP in Al flake, which were confirmed by TEM images. The thermal conductivities of the epoxy composites increased monotonically with the filler content and the partially and fully inserted epoxy/Al-xGnP composites showed almost 2–3 times higher than those of epoxy/xGnP and epoxy/Al composites. Especially, partially inserted epoxy/Al-xGnP composite showed the highest values of thermal conductivity at the same filler concentration because of the network bridge between Al flakes. The tensile and flexural moduli of the fully inserted epoxy/Al-xGnP showed the highest value in all areas of the filler content because of the good dispersion quality but the tensile and flexural strengths of all epoxy composites decreased with the filler content due to the increase of weak interface between epoxy matrix and the filler.

制备了环氧/铝剥落石墨纳米片（Al-xGnP）复合材料。在制备复合材料之前，先制备两种类型的Al-xGnP杂化粉末，一种是将xGnP完全插入铝（Al）薄片中，另一种是将xGnP部分插入Al薄片中，这通过TEM图像得到了证实。环氧复合材料的热导率随填料含量的增加而单调增加，部分和完全插入的环氧/ Al-xGnP复合材料的导热性几乎是环氧/ xGnP和环氧/ Al复合材料的导热性的2-3倍。尤其是，部分填充的环氧树脂/ Al-xGnP复合材料由于铝薄片之间的网桥而在相同的填料浓度下显示出最高的导热系数。