Abstract
We tested the impulse breakdown voltage of Al2O3 “nano-modified” propylene carbonate between different electrode materials. At any given concentration, the breakdown voltage was highest with stainless steel electrodes, followed by copper, and then aluminum. The space charge and electric field distributions were measured too. Results show that less space charge was injected by the electrodes, and the electric field was less distorted, than in pure propylene carbonate. However, the hoped-for reduction of the influence of the electrodes did not take place. Substantial differences in the space charge density and electric field distortion remained between the different electrode materials.
Highlights
Impulse space charge and dielectric characteristics of an Al2O3 nanoparticle suspension in propylene carbonate using various electrode materials
We studied the impulse breakdown voltage and space charge distribution of Al2O3 nanoparticle-modified propylene carbonate[13]
The results show that on one hand, the space charge injected from electrode can affect the distribution of electric field which affect the impulse breakdown voltage of propylene carbonate, on the other hand, nanoparticles can effectively capture the fast-moving charges in liquid which increase the impulse breakdown voltage of propylene carbonate when the electrode material is stainless steel
Summary
Impulse space charge and dielectric characteristics of an Al2O3 nanoparticle suspension in propylene carbonate using various electrode materials. We used the Kerr electro-optic platform shown in Fig. 3 to measure the electric field and space charge distributions in 20 mg/l nano-modified propylene carbonate between the stainless steel, copper and aluminum electrodes.[14]
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