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Review of high thermal conductivity polymer dielectrics for electrical insulation
- Source :
- High Voltage (2016)
- Publication Year :
- 2016
- Publisher :
- Wiley, 2016.
-
Abstract
- Traditional insulation material is thermally insulating and has a low thermal conductivity. The miniaturisation and higher power of electrical devices would generate lots of heat, which have created new challenges to safe and stable operation of the grid. The development of insulating materials with high thermal conductivity provides a new method to solve these problems. The improvement of thermal conductivity would increase the ability to conduct heat and greatly reduce the operating temperature of the electrical equipment, which could reduce the equipment size and extend service life. On the other hand, inorganic thermally conductive particles and the improved thermal conductivity may have great effect on thermal breakdown. In this study, the factors affecting the thermal conductivity of dielectric polymer composites were explored. Intrinsic thermal conductive polymer and particle-filled thermal conductive composites were discussed. Effect of thermal conductivity, shape, size, surface treatment of the particle and prepare process on thermal properties of the composites were illustrated. This study focused on the electrical and thermal properties of thermally conductive epoxy, polyimide and polyethylene composites. Tracking failure caused by thermal accumulation is a typical thermal breakdown phenomenon. The performance of the resistance to tracking failure was studied for these composites. The results showed that thermal conductive particles improved the resistance to tracking failure. Finally, application of thermally conductive epoxy in electrical equipment was discussed.
- Subjects :
- thermal conductivity
thermal insulating materials
filled polymers
conducting polymers
dielectric materials
electric properties
failure analysis
composite insulating materials
high thermal conductivity polymer dielectrics
electrical insulation material
thermal insulation
electrical devices
electrical equipment
equipment size reduction
service life extension
inorganic thermally conductive particles
dielectric polymer composites
particle-filled thermal conductive composites
intrinsic thermal conductive polymer
surface treatment
thermal properties
electrical properties
thermally conductive epoxy
polyethylene composites
polyimide composites
tracking failure
thermal accumulation
thermal breakdown phenomenon
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Electricity
QC501-721
Subjects
Details
- Language :
- English
- ISSN :
- 23977264
- Database :
- Directory of Open Access Journals
- Journal :
- High Voltage
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.77b2f8981f3a415d847a6cdd7fe2c65e
- Document Type :
- article
- Full Text :
- https://doi.org/10.1049/hve.2016.0008