The technology related to hybrid filler-reinforced polymer matrix composite materials is growing at a high rate with increasing interest and usage. This study presents a way of increasing the thermal conductivity of polymer matrix composites by the use of a hybrid filler consisting of carbon nanotubes and graphene nanoplatelets and preliminarily clarifies the mechanisms that lead to the synergistic reinforcement of composite thermal conductivity at the nanoscale. The focus of this study was upon the fundamental relationships between nanometer-scale reinforcement structures and macroscopic composite thermal properties. The benefits and limitations associated with the incorporation of the hybrid filler into an epoxy matrix were evaluated. The results indicated that there exists an evident synergistic reinforcing effect between carbon nanotubes and graphene nanoplatelets on composite thermal conductivity. A significant increase has been gained in composite thermal conductivity, but low loading is required in order to exploit the benefits derived from the unique structure of the hybrid filler. Filler loading must be controlled very accurately in order to ensure that a critical threshold is not reached, beyond which there is a decrease in thermal conductivity, compared to that of graphene nanoplatelet-reinforced composites. The synergistic reinforcing benefits to composite thermal conductivity and is derived from effective conducting pathways formed between carbon nanotubes and graphene nanoplatelets within polymer matrices. The results can offer practical guidance on how to improve thermal transport properties for polymer matrix composite materials.

The transport behavior of thermal energy in epoxy matrix composite materials at the nanoscale is studied. There exists an evident synergistic reinforcing effect between carbon nanotubes and graphene nanoplatelets on composite thermal conductivity, but low loading is required to exploit the benefits derived from such a hybrid nanoparticle filler.

随着兴趣和用途的增加，与杂化填料增强的聚合物基复合材料相关的技术正在高速发展。这项研究提出了一种通过使用由碳纳米管和石墨烯纳米片组成的混合填料来提高聚合物基复合材料导热系数的方法，并初步阐明了导致纳米级复合导热系数协同增强的机理。这项研究的重点是纳米级增强结构和宏观复合材料热性能之间的基本关系。评估了将杂化填料掺入环氧基质中的好处和局限性。结果表明，碳纳米管与石墨烯纳米片之间对复合材料的导热性具有明显的协同增强作用。复合材料的热导率已获得显着提高，但需要低负荷才能发挥混合填料独特结构所带来的好处。与石墨烯纳米片增强的复合材料相比，必须非常精确地控制填料的填充量，以确保未达到临界阈值，如果超过临界阈值，导热系数会降低。协同增强有益于复合材料的导热性，并且源自在聚合物基体内的碳纳米管和石墨烯纳米片之间形成的有效导电路径。

研究了热能在环氧树脂基复合材料中的纳米尺度输运行为。碳纳米管和石墨烯纳米片之间对复合材料的导热性具有明显的协同增强作用，但是需要低负荷才能利用这种杂化纳米颗粒填料的优势。