The present work discusses the effect of reinforcing epoxy by carbon fibres (CF) on the friction coefficient displayed by contact and separation as well as sliding of bare foot and foot wearing rubber contacting epoxy. The relationship between electrostatic charge (ESC) and friction coefficient will be discussed. From experiments carried out in the present work, it was observed that ESC increases with increasing CF content. Besides, as the CF are close to the sliding surface ESC increases. It is known that the strength of the electric field inside the epoxy matrix is proportional to how much charge is generated on the friction surface. The significant ESC increase when the CF were close to the surface confirmed the presence of a magnetic field around the CF that is directly proportional to the current value and inversely proportional to the distance from the conductor. ESC generated during contact and separation as well as sliding of insulating materials can play a major role in adhesion energy and alter friction.
Ali et al. (Mon,) studied this question.