高导热绝缘聚合物纳米复合材料的研究现状

发布时间：2019-05-19 22:11

【摘要】：绝缘材料的热管理能力在电气装备、电子器件的性能、寿命和稳定性方面发挥着至关重要的作用。近些年,高功率密度和高集成已成为电气设备和电子器件的发展方向,单位体积内所产生的热量越来越高,良好的散热能力就成为保证其长时间稳定运行的关键因素。因此高导热绝缘聚合物纳米复合材料的研究备受关注。为此,综述了导热填料的种类、特性及其在制备导热绝缘纳米复合材料中的应用,特别关注了通过控制聚合物复合材料的微观结构,如控制导热填料取向、双阈渗结构、纳米填料自组装形成连续导热网络等方法。最后,建议利用纺丝方法将导热纳米材料有效串联起来构筑高导热通路(简称热线),从而实现定向高导热柔性绝缘材料,也展望了高导热绝缘聚合物纳米复合材料未来的发展方向。
[Abstract]:The thermal management ability of insulation materials plays an important role in the performance, life and stability of electrical equipment and electronic devices. In recent years, high power density and high integration have become the development direction of electrical equipment and electronic devices. The heat generated in unit volume is getting higher and higher, and good heat dissipation capacity has become the key factor to ensure its long-term stable operation. Therefore, the research of polymer nanocomposites with high thermal conductivity has attracted much attention. In this paper, the types and characteristics of thermal conductive fillers and their applications in the preparation of thermal conductive insulating nanocomposites are reviewed, especially by controlling the microstructure of polymer composites, such as controlling the orientation of thermal conductive fillers and double threshold infiltration structure. Methods such as self-assembly of nano-fillers to form continuous heat conduction network. Finally, it is suggested that the thermal conductive nanomaterials should be effectively connected in series to construct a high thermal conductivity path (hot wire) by spinning method, so as to realize the directional high thermal conductivity flexible insulating material. The future development direction of high thermal insulation polymer nanocomposites is also prospected.
【作者单位】：上海交通大学上海市电气绝缘与热老化重点实验室;
【分类号】：TM21

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