| Autor: |
Siddique, Abubakar, Arshad, Amna, Aslam, Waseem, Fatima, Maham, Sardar, Muhammad Usman, Noon, Muhammad Asim |
| Předmět: |
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| Zdroj: |
International Review of Electrical Engineering; Sep/Oct2023, Vol. 18 Issue 5, p373-382, 10p |
| Abstrakt: |
In recent years, nanocomposites have obtained a lot of interest. It is feasible to achieve extremely useful dielectric material, which can be used in capacitors, by combining some amount of the nanoparticles inside the base epoxy resin. Polymers are the preferred insulating materials for various electrical purposes because of their simplicity of manufacture, lighter volume, and relatively inexpensive nature. However, because of its poor relative permittivity and low electric field stress handling capability, they have created an impediment, and efforts have been made to remove them. The addition of nanosized fillers having comparable high relative permittivity to epoxy resin is one way for getting better dielectric material as the relative permittivity of the dielectric material should be high. The relative permittivity and the electric field stress are used to determine dielectric strength. Three-dimensional models have been created by using finite element software in this work that is COMSOL Multiphysics, which has simulated distinctive nano-composites based on epoxy resin with alumina, silica, TiO2 and MgO nanofillers in order to estimate their relative permittivity values and electric field stress. The selected nanofillers are spherical, cubic and cylindrical shaped. Simulations are performed by changing their concentration(vol%), kind and number of particles. Relative permittivity enhances as the concentration of nano filler enhances. However, an increasing number of particles of nano filler gives a very slight change in relative permittivity values. Cylindrical-shaped TiO2 nano fillers give relatively better results than spherical and cubic shaped nano fillers. At the beginning, electric field stress decreases with increasing concentration and then the number of nanofillers particles has suddenly increased. The validation of results simulation outcomes has been compared with hardware tests results, which shows that the breakdown strength of alumina-based nanocomposite is higher than any other composite. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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