A rapid decrease in the temperature of the CO₂-adsorbing medium at desired moments to desorb gas is necessary for agricultural applications, for which a ceramic particle–containing polymer coating can improve heat dissipation efficiency. In this study, ceramic particle–containing polymer coatings were numerically designed for agricultural applications. The mechanical and thermal properties of polymer coatings with 40–50 vol%Al₂O₃ or SiC particles were predicted using a microscale model. Young’s modulus and thermal conductivity increased with the particle content, while thermal expansion and specific heat capacity decreased. The increases in these properties were greater for coatings with SiC than for those with Al₂O₃. The estimated properties were utilized to simulate the heat transfer and thermal shock behavior of the coating using a macroscale model. The heat dissipation performance was enhanced by the coatings compared to the bare metal, and the stress difference at the interface between the coating and substrate varied with coating thickness and type of ceramic particle. The numerical results were validated through experimental measurements. The coatings with highly connected particles and no defects showed high thermal conductivity.

Keywords: Polymer coating, Ceramic particle, Heat dissipation, Numerical design