The adhesion of epoxy-resin films painted on mild steel, which were immersed in distilled water at 20°C, was investigated by the butt-joint method. Viscoelastic properties of above painted films were determined.
It was found that the adhesion loss of painted epoxy-resin films when immersed in water was dependent on the absorption of water and the stress-relaxation properties of the painted film.
The smaller the absorption of water and the more rapid the stress-relaxation is, so the adhesion loss is the smaller.
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