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Electro-insulating Paper Degradation in Various Electro-insulating Fluids
- Source :
- Revista de Chimie. 69:91-95
- Publication Year :
- 2018
- Publisher :
- Revista de Chimie SRL, 2018.
-
Abstract
- The durability and safe operation of electrical equipment and devices with mixed insulation systems (solid/fluid - electro-insulating paper/oil) is determined by the insulation aging under simultaneous and synergic actions of electrical, thermal and chemical stress factors etc. In this context, degradations of insulating paper exposed to thermal aging in 5 different types of electro-insulating fluid have been studied experimentally. Liquid chromatography determinations have shown that the total content in furan products (resulting from cellulose degradation) in mineral oils is substantially higher than in electro-insulating fluid sorts based on of synthetic ester and/or natural ester (vegetable oil). This is due to the temperature between 90 oC and 130 oC when the activation energy of the furans formation process is up to 7.5 times lower in mineral oils than in ester-based oils. Degree determinations of cellulose polymerization (viscosimetric method) before and after exposure to heat treatment indicated that mineral oils degrade the electro-insulating paper much more strongly than ester-based oils (both synthetic and natural). Obtained results by liquid chromatography and by viscosity are in accordance with the images obtained by optical microscopy (at X 100).
- Subjects :
- Materials science
Process equipment
Materials Science (miscellaneous)
Process Chemistry and Technology
General Engineering
Electrical insulation paper
Nanotechnology
02 engineering and technology
General Chemistry
General Medicine
010402 general chemistry
01 natural sciences
General Biochemistry, Genetics and Molecular Biology
0104 chemical sciences
Petrochemistry
0202 electrical engineering, electronic engineering, information engineering
Materials Chemistry
Degradation (geology)
020201 artificial intelligence & image processing
General Pharmacology, Toxicology and Pharmaceutics
Subjects
Details
- ISSN :
- 26688212 and 00347752
- Volume :
- 69
- Database :
- OpenAIRE
- Journal :
- Revista de Chimie
- Accession number :
- edsair.doi...........e2f5675dae5171445127dd49fc98be3b
- Full Text :
- https://doi.org/10.37358/rc.18.1.6050