Electrical Resistance Change of Carbon Fabric/epoxy-matrix Composites during Heating

Electrical resistance change of0/90/±45、carbon fabric/epoxy-matrix composites during heating was studied in this paper.The experimental results showed that the resistance of different specifications of composites decreased,namely negative temperature coefficient effect can be found in composites when measured in the temperature from -50℃ to 160℃.Among these composites,0/90/±45₈ composites showed a sharp drop with the degree of 9.59%.The resistance of composites declined with different degree in different temperature range of -50℃～-20℃、-20℃～130℃、130℃～160℃.In the case of -20℃～130℃,the rate of descent was the maximum.