Electrical Resistance of Carbonized Polyvinyl Alcohol Fibers

A study was carried out on the effect of the carbonization temperature of dehydrated polyvinyl alcohol fibers on their electrical resistance at room temperature. A relationship was found between the electrical resistance and an increase in the carbonization temperature. A sharp drop in the specific volume electrical resistance of elementary carbon fibers to ultra low values not exceeding 0.193·10 -3 mΩ·cm is found upon reaching a critical carbonization temperature. Minimum electrical resistance is found for the temperature range 743-775°C. A model is proposed for the physicochemical processes in the fiber system leading to the behavior discovered.