International. Researchers at the Center for Marine Development and Research in Beijing, China, studied the effect of cross-linking density and adhesion strength of coatings on the anticorrosive performance of two different types of epoxy coatings, in a laboratory with deep-sea environment simulation, using electrochemical impedance spectroscopy (EIS) and adhesion testing.
The results showed that the deterioration of the protective properties of the coatings against corrosion under a simulated deep sea environment was much faster than that of seawater under normal pressure.
However, the rate of diffusion of the water molecule through the epoxy coatings decreased with the increase in cross-linking density and with the adhesion force of the coatings. Therefore, the corrosion protection capacity can be improved by increasing the cross-linking density of coatings to some extent and by increasing the adhesion force of coatings.
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