Thermally conductive fillers

Thermally conductive fillers are the important component of thermally conductive polymer composites and determine the upper limit of the thermal conductivities of thermally conductive polymer composites, which also affects the comprehensive performances of the corresponding thermally conductive polymer composites. Understanding the basic structures, physicochemical properties, and function of thermally conductive fillers is of great significance for the preparation and development of new highly thermally conductive fillers and corresponding high-performance thermally conductive polymer composites. This chapter introduces the physicochemical properties, preparation methods, and application fields of three types of thermally conductive fillers: metal, carbon, and ceramic. The factors affecting the thermal conductivities of thermally conductive fillers are also analyzed to provide some references for the correct selection and appropriate use of thermally conductive fillers in different scenarios, as well as to provide theoretical support and practical application basis for the research on the preparation of polymer composites with excellent thermal conductivities.