Effects of Ceramic Fillers on Light Reflectance and Arc Resistance of PTFE for Circuit Breaker


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This paper presents the effects of ceramic fillers on light reflectance and arc resistance of PTFE(polytetrafluoroethylene) for nozzle of circuit breaker. In arc environment of a circuit breaker, radiation generated from arcing is considered to play a key role in transport mechanism of arc energy to the wall. Adding some ceramic fillers into PTFE material is expected to be efficient for improving the endurance against arc radiation. In this experiment, three kinds of ceramic fillers for achieving good endurance in the high temperature were used. Light reflectance and arc resistance of PTFE composites were investigated. The arc resistance of PTFE composites increased with the amount of ceramic fillers. The light reflectance of PTFE composites filled with ceramic fillers increased in the long wavelength region and decreased largely in the short wavelength region in comparison with that of pure PTFE.



Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong




H. Y. Park et al., "Effects of Ceramic Fillers on Light Reflectance and Arc Resistance of PTFE for Circuit Breaker", Key Engineering Materials, Vols. 336-338, pp. 2546-2548, 2007

Online since:

April 2007




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[10] [20] [30] [40] [50] [60] [70] [80] [90] 100 Reflectivity (%) Wavelength (nm) 5% 10% 15% 20.

2 4 6 8 10.

[40] [50] [60] [70] [80] [90] 100 110 120 Weight loss (mg) Filler content (%) BN Al2O3 TiO2 Fig. 7. Light reflectance of TiO2 filled PTFE. Fig. 8. Weight loss of PTFE composites.