Revealing the influence of methods for producing polymer micro- and nanocomposites with different polymer matrices on their thermal conductivity properties
Abstract
The thermal conductivity properties of polymer micro- and nanocomposites depending on different production methods have been investigated in this study. The task addressed relates to the synthesis of such composites with a wide range of thermal conductivity properties, the application of which is promising in various fields of science and technology. This task has been solved by performing a set of systematic studies and by conducting corresponding comparative analysis of the results for a wide range of micro- and nanocomposites obtained by different methods. A cycle of experimental studies produced results for composites based on polyvinyl chloride, polyethylene, polypropylene, polycarbonate, and polyamide 6, when filled with carbon nanotubes and microparticles of aluminum and carbon black. When making composites, two methods were used, the first of which is based on mixing components in dry form, the second – in the polymer melt. The dependence of the thermal conductivity properties of composites based on polyvinyl chloride on their production methods was analyzed. It is shown that when using the first of the above methods, relatively low-thermal-conductivity modifications of the studied composites occur, and when using the second method, relatively high values of their thermal conductivity occur. These patterns are explained by the fact that when using the second method, the efficiency of formation of percolation clusters and networks of filler particles is increased, and therefore the thermal conductivity of materials increases. The influence of methods for obtaining composites with different polymer matrices on their thermal conductivity properties was analyzed. Promising areas of application of the proposed composites are power engineering, electric transport, electronics, cooling systems, etc. Their practical use focuses on the latest technologies and equipment