PITCH-BASED CARBON-FIBERS - BROMINATION, RESISTIVITY, STABILITY

Electro-physical characteristics of brominated pitch-based carbon fibe rs (CF) have been measured in the 10-300 K temperature range. The room -temperature electrical resistivity of these fibers has decreased by a factor of 7 relative to their initial state. The temperature dependen cies of tile resistance for both initial and Br-2-treated CFs turned o ut to be similar. The temporary stability of the brominated fibers res istance was monitored over one month. Thermal stability of Brl-treated fibers in 25-800 degrees C temperature range has been studied by TGA- method.