Effect of Air Temperature and Humidity on Electromechanical Properties of Elastic Graphite-Based Fiber Composites

Abstract

In this work, we demonstrate the possibility of obtaining elastic electrically conductive composites by aerosol application of graphite and polytetrafluoroethylene dispersions in an organic solvent on fiber materials made of natural and synthetic polymers. We observe a manyfold change of electrical resistance, as well as deformation and strain sensitivity parameters of the obtained fiber electrically conductive composites due to elongation and elastic contraction of filaments in the deformation range of 15–30 %. Laboratory prototypes of strain sensors manufactured from electrically conductive composites based on a knit fabric with a minimal electrical resistance hysteresis (less than 4 %) were tested under cyclic deformation.