This paper investigates the aging behavior of PVC using dielectric spectroscopy, DC conductivity measurements, and Fourier transform infrared spectroscopy (FTIR) under accelerated radiation (860 Gy/h, room temperature) and radiation-thermal conditions (820 Gy/h at 70° C). The real part of permittivity in the low frequency and conductivity show pronounced changes during the initial aging phase, while further aging causes the reaching of a plateau of the investigated properties under irradiation alone, whereas combined aging with temperature leads to stronger degradation at long aging times. FTIR results show a continuous increase in the -OH absorption band throughout aging, indicating a strong oxidation in the materials.
Jin, J., Fabiani, D., Suraci, S.V. (2026). Electrical and Chemical Characterization of PVC Insulation Aged Under Radiation and Radiation Thermal Stress. Institute of Electrical and Electronics Engineers Inc. [10.1109/ICD64907.2026.11665257].
Electrical and Chemical Characterization of PVC Insulation Aged Under Radiation and Radiation Thermal Stress
Jin J.;Fabiani D.;Suraci S. V.
2026
Abstract
This paper investigates the aging behavior of PVC using dielectric spectroscopy, DC conductivity measurements, and Fourier transform infrared spectroscopy (FTIR) under accelerated radiation (860 Gy/h, room temperature) and radiation-thermal conditions (820 Gy/h at 70° C). The real part of permittivity in the low frequency and conductivity show pronounced changes during the initial aging phase, while further aging causes the reaching of a plateau of the investigated properties under irradiation alone, whereas combined aging with temperature leads to stronger degradation at long aging times. FTIR results show a continuous increase in the -OH absorption band throughout aging, indicating a strong oxidation in the materials.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
