The effects of thermal aging and irradiation on the electrical conductivity of carbon black-filled polyethylene composites were investigated in this study. A pertinent aging treatment to effectively decrease the electrical resistance of the composites to its ground value was explored by means of differential scanning calorimetry. Experimental results showed that the composites via irradiation would exhibit a significant resistance jump. The degree of the resistance jump was dependent on the characteristics of the carbon black contained in the composites. However, performing thermal aging on the composites prior to irradiation had no evident influence on the resistance elevation.
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