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Experiment and modeling for solvent leaching from paint matrix considering equilibrium

Moriyama, Kiyofumi; Chiba, Noriaki; Tashiro, Shinsuke; Maruyama, Yu; Nakamura, Hideo ; Watanabe, Atsushi*

The leach of remaining solvent in an epoxy paint coating when it is submerged in water was experimentally studied. A leach kinetics model considering the equilibrium of the solvent concentration in the paint matrix and in water was developed. Three model parameters, equilibrium constant $$K$$, leaching rate $$k_d$$, and initial concentration of the solvent in the paint $$C_p^0$$ were evaluated based on the experimental results, and empirical correlation equations for them were obtained. The model showed good qualitative and quantitative agreement with the observed evolution of the leached solvent mass in the present experiment. Also the model showed consistency with experimental data by Ball et al. (2003).

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Category:Nuclear Science & Technology

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