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http://dx.doi.org/10.14478/ace.2022.1091

Effects of P2O5-doped on the Surface of MgO Particles for Hydrolysis, Water Repellency, and Insulation Behavior  

Choi, Jin Sam (Division of Industry-University Convergence Business, Ulsan Industry-University Convergence Institute)
Publication Information
Applied Chemistry for Engineering / v.33, no.6, 2022 , pp. 588-593 More about this Journal
Abstract
The effects of P2O5-doped on the surface of MgO particles on hydrolysis, water repellency, and insulation behavior were investigated. P2O5-doped MgO has exhibited a unique electrical property, which is significant insulation behavior due to both the suppression of the hydrolysis reaction by P2O5 and water repellency. Therefore, the insulation behavior was inversely proportional to the hydrophilicity and the Mg(OH)2 and OH-charge transfer ratio by the surface hydration reaction of MgO. The insulation of MgO according to aging was strongly influenced by the surface hydration reaction, the band gap of the added dopant species, and the hydrophilicity and hydrophobicity of the dopant. Finally, it was to show electrical insulation by inhibiting the surface hydration reaction of the hydrophilic MgO, which has a great potential for use in heat transfer medium applications.
Keywords
Heating media; Dopant; Hydroysis reaction; Water repellency; Insulation behavior;
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