Ageing Characteristics of Epoxy Nanocomposites doped with Silane functionalized Alumina Nanoparticles for High-Voltage Insulation Applications

Performance analysis of epoxy nanocomposites under prolonged thermal and electrical stresses is vital for its use in high-voltage applications. In this regard, this work studies the influence of (3-Glycidyloxypropyl) trimethoxy silane and (3-Aminopropyl) triethoxy silane (APTES) as surface-functiona...

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Published inIEEE transactions on dielectrics and electrical insulation Vol. 30; no. 5; p. 1
Main Authors Varghese, Jacob P., Haque, Nasirul, Sunitha, R., Preetha, P.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
AC breakdown
ageing
Aging
Aluminum oxide
APTES
Bonding agents
Discharge
Electrical resistivity
epoxy alumina nanocomposites
Fourier transforms
GPTMS
High voltages
Infrared spectroscopy
Nanocomposites
Nanoparticles
Permittivity
Reduction
resistivity
Rough surfaces
Silanes
Surface discharges
Surface impedance
surface partial discharge
Surface resistance
Surface resistivity
Surface roughness
surface-functionalization
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Abstract Performance analysis of epoxy nanocomposites under prolonged thermal and electrical stresses is vital for its use in high-voltage applications. In this regard, this work studies the influence of (3-Glycidyloxypropyl) trimethoxy silane and (3-Aminopropyl) triethoxy silane (APTES) as surface-functionalization agents in enhancing the durability of epoxy alumina nanocomposites. To accomplish this, the experiments have been carried out by subjecting the samples to surface discharge ageing at 10 kV for a duration of 24 hours and thermal ageing at 100 °C for a period of 500 hours. The samples subjected to surface discharge ageing are characterized through permittivity, average partial discharge magnitude, surface-resistivity, Fourier-Transform Infra-Red spectroscopy (FTIR), and surface roughness measurements. Along with these, AC breakdown voltage of these samples; and changes in FTIR, permittivity and volume resistivity caused due to thermal ageing have also been found out. After surface discharge ageing experiments, epoxy filled with APTES-treated alumina nanoparticles has shown superior ageing resistance than all other samples; exhibiting 64 % reduction in surface roughness and 91 % reduction in average partial discharge magnitude, as compared to pure epoxy. Investigation results indicate that the bonds created by surface-functionalization agents and nanoparticles are crucial in improving the overall resistance of nanocomposite towards ageing.
AbstractList Performance analysis of epoxy nanocomposites under prolonged thermal and electrical stresses is vital for their use in high-voltage applications. In this regard, this work studies the influence of (3-glycidyloxypropyl) trimethoxysilane (GPTMS) and (3-aminopropyl)triethoxy- silane (APTES) as surface-functionalization agents in enhancing the durability of epoxy alumina nanocomposites. To accomplish this, the experiments have been carried out by subjecting the samples to surface discharge aging at 10 kV for a duration of 24 h and thermal aging at 100 °C for a period of 500 h. The samples subjected to surface discharge aging are characterized through permittivity, average partial discharge (PD) magnitude, surface resistivity, Fourier transform infrared (FTIR) spectroscopy, and surface roughness measurements. Along with these, the ac breakdown voltage of these samples and changes in FTIR, permittivity, and volume resistivity caused due to thermal aging have also been found. After surface discharge aging experiments, epoxy filled with APTES-treated alumina nanoparticles has shown superior aging resistance than all other samples, exhibiting a 64% reduction in surface roughness and a 91% reduction in average PD magnitude, when compared to pure epoxy (EP). Investigation results indicate that the bonds created by surface-functionalization agents and nanoparticles (NPs) are crucial in improving the overall resistance of nanocomposite towards aging.
Performance analysis of epoxy nanocomposites under prolonged thermal and electrical stresses is vital for its use in high-voltage applications. In this regard, this work studies the influence of (3-Glycidyloxypropyl) trimethoxy silane and (3-Aminopropyl) triethoxy silane (APTES) as surface-functionalization agents in enhancing the durability of epoxy alumina nanocomposites. To accomplish this, the experiments have been carried out by subjecting the samples to surface discharge ageing at 10 kV for a duration of 24 hours and thermal ageing at 100 °C for a period of 500 hours. The samples subjected to surface discharge ageing are characterized through permittivity, average partial discharge magnitude, surface-resistivity, Fourier-Transform Infra-Red spectroscopy (FTIR), and surface roughness measurements. Along with these, AC breakdown voltage of these samples; and changes in FTIR, permittivity and volume resistivity caused due to thermal ageing have also been found out. After surface discharge ageing experiments, epoxy filled with APTES-treated alumina nanoparticles has shown superior ageing resistance than all other samples; exhibiting 64 % reduction in surface roughness and 91 % reduction in average partial discharge magnitude, as compared to pure epoxy. Investigation results indicate that the bonds created by surface-functionalization agents and nanoparticles are crucial in improving the overall resistance of nanocomposite towards ageing.
Author Sunitha, R.
Varghese, Jacob P.
Preetha, P.
Haque, Nasirul
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Snippet Performance analysis of epoxy nanocomposites under prolonged thermal and electrical stresses is vital for its use in high-voltage applications. In this regard,...
Performance analysis of epoxy nanocomposites under prolonged thermal and electrical stresses is vital for their use in high-voltage applications. In this...
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SubjectTerms AC breakdown
ageing
Aging
Aluminum oxide
APTES
Bonding agents
Discharge
Electrical resistivity
epoxy alumina nanocomposites
Fourier transforms
GPTMS
High voltages
Infrared spectroscopy
Nanocomposites
Nanoparticles
Permittivity
Reduction
resistivity
Rough surfaces
Silanes
Surface discharges
Surface impedance
surface partial discharge
Surface resistance
Surface resistivity
Surface roughness
surface-functionalization
Title Ageing Characteristics of Epoxy Nanocomposites doped with Silane functionalized Alumina Nanoparticles for High-Voltage Insulation Applications
URI https://ieeexplore.ieee.org/document/10192921
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Volume 30
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