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Citation: Su Hongyu, Zhu Xiaohong, Wei Guizhen. ON THE RESISTANCE-TEMPERATURE BEHAVIOR OF POLIYETHYLENE-CARBON BLACK CONDUCTIVE COMPOSITES[J]. Chinese Journal of Applied Chemistry, ;1990, 7(5): 97-100. shu

ON THE RESISTANCE-TEMPERATURE BEHAVIOR OF POLIYETHYLENE-CARBON BLACK CONDUCTIVE COMPOSITES

1.
Department of Chemistry, University of Science and Technology of China, Hefei 230026

Received Date: 16 November 1989
Available Online: 31 March 1990

In this paper the influence of the-voltage on the resistance of polyethylene-carbon black composites has been studied, and thus the resistance-temperature behavior has been examined more accurately. The relationship between resistance and temperature could be expressed by an exponential formula:R=M. exp(N(t+80)/(110-t)), which is coincident with temperat-ure up to 10~30℃ below the M.P. of polyethylene depending on the carbon black content.The relationship between the expansion coefficient and temperature was compared with the PTC phenomenon of the materials. High expansion coefficient of the matrix is essential for the conductive composites to possess PTC effect.
- carbon black,
- polyethylene conductive composite,
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