This paper successfully developed a fiber z-pin reinforced graphite sheet (GS) and carbon fiber (CF) hybrid composite laminate. By taking advantages of the superior thermal conductivities of graphite sheet and z-pins, three-dimensional highly conductive paths were constructed to achieve the multifunctions of advanced polymer composites. The effects of ply scheme and z-pin type on the thermal conductivity and heat transfer process of z-pin reinforced GS/CF composites were investigated to reveal the interfacial heat exchange between z-pin and laminas. The results show that both through-thickness and in-plane thermal conductivities are enhanced significantly by implanting through-thickness z-pins in GS/CF composites. This is ascribed to the effective through-thickness conductive paths of z-pins and the synergistic heat transfer of graphite ply and carbon fiber pins. For [GS/CF₄/GS]-PAN-pin composite, about 15% laser flash energy transfers through z-pins with a volume fraction of only 2.18%. More obvious heat exchange between z-pins and lamina may be achieved by implanting pitch-based carbon fiber z-pins with higher thermal conductivity and smaller diameter. The resultant through-thickness and in-plane thermal conductivities of [GS/CF₄/GS]-pitch-1-pin are measured to be 8.80 W·m⁻¹K⁻¹ and 18.50 W·m⁻¹K⁻¹, which are 13.7 and 8.3 times higher than those of control sample, respectively.

本文成功地开发了纤维Z针增强石墨片（GS）和碳纤维（CF）混合复合层压板。通过利用石墨片和z销的出色导热性，构建了三维高导热路径，以实现高级聚合物复合材料的多功能。研究了层板方案和z-pin类型对z-pin增强的GS / CF复合材料的导热性和传热过程的影响，以揭示z-pin和层板之间的界面热交换。结果表明，通过在GS / CF复合材料中植入全厚度z销，可以显着提高全厚度和面内导热率。这归因于z销的有效贯穿厚度的传导路径以及石墨层和碳纤维销的协同传热。对于[GS / CF₄ / GS] -PAN引脚复合材料中，约有15％的激光闪光能量通过z引脚传输，体积分数仅为2.18％。通过植入导热系数更高且直径较小的沥青基碳纤维Z销，可以实现Z销与薄片之间更明显的热交换。全厚度和面内的热传导率[GS / CF所得的₄ / GS] -pitch -1-销测量为8.80·W·米^{- 1} ķ ^-1和18.50·W·米^{- 1} ķ ^-1，分别是对照样品的13.7和8.3倍。