TY - JOUR
AU1 - Xi, Rui
AU2 - Jiang, Qiyang
AU3 - Cao, Liang
AU4 - Li, Chuping
AU5 - He, Jiaxun
AU6 - Zhang, Ya
AU7 - He, Gaohui
AU8 - Gui, Yingang
AU9 - Tang, Chao
AB - Moisture has been a crucial problem during the operation of cable systems. When we are faced with polypropylene (PP)-based insulation for the development of cable systems, there are few reports on the effects of water intrusion on the electrical performances of PP. In this study, the water absorption characteristics of isotactic PP (iPP) and atactic PP (aPP), as well as their effects on volume resistivity and relative permittivity, were investigated. The structure evolution during the water absorption process of the two PPs was also compared via infrared spectra and X-ray diffraction analyses. The results show that both of the two PPs show a saturation of water absorption at ~216 h, even though there are structural differences. And water intrusion into bulk could increase the interplanar spacing of iPP while decreasing the interplanar spacing of aPP. Moreover, with the increase in water absorption, the volume resistivity of the two PPs show a decreasing trend while the relative permittivity presents an increasing behavior, which shows an almost linear correlation.
TI - Effects of Water Absorption on the Insulating Properties of Polypropylene
JF - Energies
DO - 10.3390/en17184576
DA - 2024-09-12
UR - https://www.deepdyve.com/lp/multidisciplinary-digital-publishing-institute/effects-of-water-absorption-on-the-insulating-properties-of-HOI2c02mSL
SP - 4576
VL - 17
IS - 18
DP - DeepDyve
ER -