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Understanding the thermal degradation of an electric fire-resistant cable

Published online by Cambridge University Press:  01 February 2011

Catherine Henrist
Affiliation:
Department of Inorganic and Structural Chemistry Sart-Tilman B6, 4000 Liège University of Liège (Belgium)
André Rulmont
Affiliation:
Department of Inorganic and Structural Chemistry Sart-Tilman B6, 4000 Liège University of Liège (Belgium)
Rudi Cloots
Affiliation:
Department of Inorganic and Structural Chemistry Sart-Tilman B6, 4000 Liège University of Liège (Belgium)
Guenter Beyer
Affiliation:
Kabelwerk Eupen Malmedyerstrasse, 9 B-4700 Eupen (Belgium)
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Abstract

The processing of fire-resistant non-halogeneted electric cables is a specific challenge. Metal hydroxides have always been extensively used as fillers in the insulating polymer sheaths. Recently, an hydrated zinc borate has been said to act in synergy with the traditionnal aluminium trihydroxide. We report the results of a microstructural investigation of a cable containing zinc borate in combination with aluminium trihydroxide, submitted to different heat treatments in order to get information about the structural modifications and the degradation of the electrical properties. We conclude with a short proposal to improve its efficiency.

Type
Research Article
Copyright
Copyright © Materials Research Society 2000

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References

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