Abstract:
The time dependences of the current on the voltage and temperature of a polymer composite containing carbon nanotubes, obtained by ultra-high frequency electromagnetic radiation, have been studied. The current consumption of the composite is nonlinearly dependent on the applied voltage, taking into account the inrush current, which initiates heating, and the temperature in the range from -60$^\circ$C to +60$^\circ$C. The inrush current in the nanocomposite is associated with the charge transfer process in the microstructure formed by carbon nanotube bundles due to the polarization of the polymer matrix. The scientific novelty of this study lies in the analysis of the electrophysical properties of the nanocomposite, considering the positive temperature coefficient of resistance effect. It was revealed that a stable current regime forms in the voltage range of 32–36 V, allowing for stable heat emission up to -60$^\circ$C.
Keywords:polymer composites, temperature self-regulation, metallized carbon nanotubes, electrical conductivity.
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