Date of Award
2008
Publication Type
Master Thesis
Degree Name
M.A.Sc.
Department
Electrical and Computer Engineering
Keywords
Applied sciences
Supervisor
R. Hackam
Rights
info:eu-repo/semantics/openAccess
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Abstract
This thesis presents a laboratory study on the aging mechanisms responsible for loss and recovery of hydrophobicity of high temperature vulcanized silicone rubber used as a high voltage insulator. The effects of different stresses of heat and water salinity on the hydrophobicity were determined as a function of time, by measuring intermittently the static contact angle, the weight and average surface roughness during aging as well as recovery.
The SEM, EDS and ATR-FTIR spectroscopy were utilized to study the physical and chemical changes on the surface. In addition, the surface free energies γ s, γsl and W sl of the specimens were calculated from the measured data of the contact angles of &thetas;W and &thetas;MI.
The loss and recovery of hydrophobicity of the specimens due to migration of the low molecular weight (LMW) fluid from bulk to the surface under different stress conditions was investigated. The contents of the extracted LMW fluid were characterized by mass spectrometry, IR and NMR spectroscopy.
Recommended Citation
Ali, Mansab, "Electrical surface properties of HTV silicone rubber used for high voltage insulation" (2008). Electronic Theses and Dissertations. 8095.
https://scholar.uwindsor.ca/etd/8095