TY - JOUR
T1 - Partial discharge degradation of several biodegradable polymers
AU - Fuse, Norikazu
AU - Fujita, Shinjiro
AU - Hirai, Naoshi
AU - Tanaka, Toshikatsu
AU - Kozako, Masahiro
AU - Kohtoh, Masanori
AU - Okabe, Shigemitsu
AU - Ohki, Yoshimichi
PY - 2007
Y1 - 2007
N2 - Partial discharge (PD) resistance was examined by applying a constant voltage for four kinds of biodegradable polymers, i.e. poly-L-lactic acid (PLLA), polyethylene terephthalate succinate (PETS), poly ε-caprolactone butylene succinate (PCL-BS), and polybutylene succinate (PBS), and the results were compared with those of low density polyethylene (LDPE) and crosslinked low density polyethylene (XLPE). The PD resistance is determined by the erosion depth and the surface roughness caused by PDs, and is ranked as LDPE ≅ XLPE > PLLA ≅ PETS > PBS > PCL-BS. This means that the sample with a lower permittivity has better PD resistance. Furthermore, observations of the sample surface by a polarization microscope and a laser confocal one reveal that crystalline regions with spherulites are more resistant to PDs than amorphous regions. Therefore, good PD resistance can be achieved by the sample with a high crystallinity and a low permittivity.
AB - Partial discharge (PD) resistance was examined by applying a constant voltage for four kinds of biodegradable polymers, i.e. poly-L-lactic acid (PLLA), polyethylene terephthalate succinate (PETS), poly ε-caprolactone butylene succinate (PCL-BS), and polybutylene succinate (PBS), and the results were compared with those of low density polyethylene (LDPE) and crosslinked low density polyethylene (XLPE). The PD resistance is determined by the erosion depth and the surface roughness caused by PDs, and is ranked as LDPE ≅ XLPE > PLLA ≅ PETS > PBS > PCL-BS. This means that the sample with a lower permittivity has better PD resistance. Furthermore, observations of the sample surface by a polarization microscope and a laser confocal one reveal that crystalline regions with spherulites are more resistant to PDs than amorphous regions. Therefore, good PD resistance can be achieved by the sample with a high crystallinity and a low permittivity.
KW - Biodegradable polymer
KW - Dielectric aging
KW - Electrical insulation
KW - Partial discharge
KW - Surface degradation
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U2 - 10.1541/ieejfms.127.459
DO - 10.1541/ieejfms.127.459
M3 - Article
AN - SCOPUS:34548227786
SN - 0385-4205
VL - 127
SP - 459-466+5
JO - IEEJ Transactions on Fundamentals and Materials
JF - IEEJ Transactions on Fundamentals and Materials
IS - 8
ER -