10016 Feasibility Study of Rapid Cure Coatings for Marine Environment
A feasibility study on the application of several kinds of rapid cure coating system to
water ballast tank was conducted in terms of curing characteristics and coating
performance. The coating systems employed in this study were three types of solvent free
rapid cure epoxy coatings, an isocyanate curable polyurethane coating and a polyurea
coating system. Polyurethane and polyurea coating were especially formulated for sea
water ballast tank service. Based on the study of curing characteristics and coating
performance of the polyurethane and polyurea coating system, it was found that lower
adhesion strength of the coatings over power tool treated surface and lower surface
profile was the result suggesting that additional primer application is needed in order to
obtain required adhesion strength. Moreover corrosion resistance of the fast cure coatings
especially in water immersion was inferior to that of the required epoxy coatings.
Keywords: rapid cure, isocyanate, polyurethane, polyurea, adhesion, crack resistance,
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