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- Title
Thermal degradation of PVC cable insulation studied by simultaneous TG-FTIR and TG-EGA methods.
- Authors
Beneš, M.; Milanov, N.; Matuschek, G.; Kettrup, A.; Plaček, V.; Balek, V.
- Abstract
Thermogravimetry (TG/DTG) coupled with evolved gas analysis (MS detection) of volatiles was used to characterize the thermal behavior of commercial PVC cable insulation material during heating in the range 20-800°C in air and nitrogen, respectively. In addition, simultaneous TG/FTIR was used to elucidate chemical processes that caused the thermal degradation of the sample. A good agreement between results of the methods was found. The thermal degradation of the sample took place in three temperature ranges, namely 200-340, 360-530 and 530-770°C. The degradation of PVC backbone started in the range 200-340°C accompanied by the release of HCl, H2O, CO2 and benzene. The non-isothermal kinetics of thermal degradation of the PVC cable insulation in the temperature range 200-340°C was determined from TG results measured at heating rates of 1.5, 5, 10, 15 and 20 K min-1 in nitrogen and air, respectively. The activation energy values of the thermal degradation process in the range 200-340°C of the PVC cable insulation sample were determined from TG results by ASTM method.
- Subjects
ELECTRIC cables; POLYVINYL chloride; ELECTRIC insulators &; insulation; CHEMICAL kinetics; THERMOGRAVIMETRY; FOURIER transform infrared spectroscopy
- Publication
Journal of Thermal Analysis & Calorimetry, 2004, Vol 78, Issue 2, p621
- ISSN
1388-6150
- Publication type
Article