Among chemical coating methods, deposition using electrostatic spraying is commonly employed in coating processes to control the deposition rate, thickness, and properties of the formed materials. In this study, we considered the following variables: ring electrode, ring diameter (RD), ring voltage (RV), and nozzle-ring distance (NTR). Through experiments, we determined the atomization mode applied voltage, Sauter mean diameter (SMD), and SMD standard deviation of the nozzle. Additionally, we derived the voltage intensity and electric field along the axial direction using ANSYS maxwell to identify the optimal ring electrode atomization conditions.
An electrospray is widely used in the industry due to uniform and continuous droplet generation. Most of the studies on the electrospray modes are conducted in the cone jet mode. The goal of this study is to confirm the spray patterns for each mode of the electrospray by setting various conditions, such as nozzle to substrate, nozzle diameters, fluid properties (Viscosity and Conductivity), and flow rate. As a result, 7 modes were observed by the applied voltage and flow rate. It was confirmed that the smallest droplet size was produced in the cone jet mode and working fluid V (High Conductivity).
Citations
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Experimental Investigation of Electrospraying Properties Based on Ring Electrode Modification Ji Yeop Kim, Sang Ji Lee, Mun Hee Lee, Jung Goo Hong ACS Omega.2024; 9(1): 1125. CrossRef
Study on Correlation between Manufacturing Method of Thermal Insulation Fabric and Thermal Insulation Performance for Reducing Rail Temperature in Summer Season Juyeop Park, Donghoon Kang Journal of the Korean Society for Precision Engineering.2024; 41(4): 313. CrossRef
Study of Droplet Characteristics of Electrospray Coating Method as a Function of Ring Electrode Parameters Ji Yeop Kim, Mun Hee Lee, Jun Yeop Kim, Jung Goo Hong Journal of the Korean Society for Precision Engineering.2024; 41(2): 153. CrossRef
Periodicity of Droplet Impact Behavior by Liquid Viscosity on PDMS Surface Dong Kwan Kang, Sangmin Lee Journal of the Korean Society for Precision Engineering.2022; 39(11): 857. CrossRef
Spray Mode and Monodisperse Droplet Properties of an Electrospray Ji Yeop Kim, Sang Ji Lee, Jung Goo Hong ACS Omega.2022; 7(32): 28667. CrossRef
Viscosity Effect on the Electrospray Characteristics of Droplet Size and Distribution Ji Yeop Kim, Sang Ji Lee, Gwang Yeol Baik, Jung Goo Hong ACS Omega.2021; 6(44): 29724. CrossRef
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