Efficient heat-flow pathways must be built in order to improve the thermal management performance of materials. In this respect, an effective approach is the fabrication of three-dimensional (3D) network structures to generate thermally conductive polymer composites. Herein, aluminum nitride/boron nitride/epoxy (AlN/BN/EP) composites with a 3D foam structure (3D-AlN/BN/EP) are fabricated to take advantage of the thermal behavior of ammonium bicarbonate and the curing properties of the epoxy resin. The 3D foam-structured composite with a filler loading of 50 wt.% is shown to provide a 657% enhancement in thermal conductivity compared to that of the pure epoxy resin. It is also superior to randomly distributed composite materials. In addition, silane-treated AlN is shown to provide composites with increased thermal conductivity and mechanical strength. Therefore, the process described herein provides an easy way to significantly reinforce the thermal conductivity of polymer composites.

必须建立有效的热流通路，以提高材料的热管理性能。在这方面，一种有效的方法是制造三维 (3D) 网络结构以生成导热聚合物复合材料. 在此，利用碳酸氢铵的热行为和环氧树脂的固化性能，制备了具有 3D 泡沫结构（3D-AlN/BN/EP）的氮化铝/氮化硼/环氧树脂（AlN/BN/EP）复合材料树脂。与纯环氧树脂相比，填充量为 50 wt.% 的 3D 泡沫结构复合材料的热导率提高了 657%。它也优于随机分布的复合材料。此外，经硅烷处理的 AlN 显示出可提供具有更高热导率和机械强度的复合材料。因此，本文所述的方法提供了一种显着增强聚合物复合材料的热导率的简单方法。