Study on liquids diffusion into and relevant corrosion behaviour of glass fibre reinforced polymer used in high voltage composite insulator

High Voltage

¹  Yuanji Cai²  Xidong Liang²  Shaohua Li²  Yingyan Liu²  Weining Bao²  Chao Wu³  Yanfeng Gao⁴ 

[1]

[2]Department of Electrical Engineering, State Key Lab of Power System, Tsinghua University

[3]Department of Electrical and Computer Engineering, University of Connecticut

[4]State Grid Jibei Electric Power Co. Ltd, Research Institute, North China Electric Power Research Institute Co. Ltd

关键词: glass fibre reinforced plastics;    dissolving;    corrosion protection;    scanning electron microscopy;    diffusion;    surface morphology;    chemical reactions;    fourier transform infrared spectra;    high voltage composite insulator;    plate-shaped gfrp specimens;    glass fibre reinforced polymer;    liquids diffusion tests;    corrosion behaviour;    deionised water;    nacl solution;    nitric acid solution;    chemical reaction;    physical dissolution;    fourier transform infrared spectroscopy;    scanning electron microscopy;    optical interferometry;    two-dimensional materials;    3d surface morphology;    surface layer;    time 4000.0 hour;   

DOI  :  10.1049/hve.2018.5107

来源: DOAJ

【 摘 要 】

Long-term liquids diffusion tests were performed on glass fibre reinforced polymer (GFRP) used in high voltage composite insulator. The plate-shaped GFRP specimens were immersed in three types of liquids, which high voltage composite insulator would encounter in practice, including deionised water, NaCl solution and nitric acid solution for a period of 4000 h. Chemical reaction and physical dissolution complicated the diffusion processes, which could be divided into three types based on the features of diffusion curves. Fourier transform infrared spectroscopy, scanning electron microscopy and optical interferometry were employed to investigate the chemical property, two-dimensional (2D) and 3D surface morphologies of GFRP. The results revealed that the surface layer of GFRP was destroyed to some extent depending on the type and concentration of the liquid, the maximum of profile height deviation of GFRP surface was proposed to evaluate the extent of the corrosion of GFRP, the greater the profile height deviation, the more serious the corrosion of GFRP. The present work is helpful for a better understanding of the diffusion behaviour of liquids into GFRP used in high voltage composite insulator as well as in other industry applications.

【 授权许可】

Unknown