Abstract
Two thermal analysis techniques (isothermal differential calorimetry and isothermal thermogravimetric analysis) are used as analytical methods for short-term thermal endurance characterization of polymeric materials, used for electrical insulation. These techniques are applied to commercial grade ethylene-propylene rubber and polyvinyl chloride. It is shown that thermogravimetric analysis provides very satisfactory results, independently of the degradation reactions which take place in the material. Calorimetry proves to be effective only for polymers (such as polyolefins) in which oxidation is the largely prevailing degradation mechanism in the test and service temperature ranges.
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References
IEC 216 Standard, 'Guide for the determination of thermal endurance properties of electrical insulating materials', 4th issue (1990–1994).
IEC 1026 Standard, 'Guidelines for application of analytical test methods for thermal endurance testing of electrical insulating materials', 1st issue (1991).
G. C. Montanari, A. Motori, A. Bulinski, S. Bamji and J. Densley, IEEE Int. Symp. on Electrical Insulation, Baltimore USA, June 1992, p. 44.
G. C. Montanari and A. Motori, IEEE Trans. on Dielectr. and Electr. Insul., 3 (1996) 561.
D. J. Toop, IEEE Trans. on Dielectr. and Electr. Insul., 6 (1971) 2.
G. Mazzanti, G. C. Montanari and A. Motori, J. Phys. Appl. Phys., 27 (1994) 2601.
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Motori, A., Montanari, G.C., Saccani, A. et al. Short-term evaluation of the thermal endurance characteristics of polymeric materials by TA. Journal of Thermal Analysis and Calorimetry 72, 1159–1166 (2003). https://doi.org/10.1023/A:1025044415861
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DOI: https://doi.org/10.1023/A:1025044415861