無公害防汚塗料を使用したFRP船体の汚損防止-I : シリコーン塗膜の防汚効果

概要

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The marine pollution of enclosed seas is nowadays becoming a large social problem. For the purpose of preventing the marine fouling on a FRP ship hull, I have researched a new coating method by using a nontoxic paint instead of toxic paints in present use. In this report, the effectiveness of our proposed coating system with a non-polluting silicone paint as the top-coat and with a chlorinated rubber paint as the under-coat is reconfirmed. From the experiments of many FRP plates and two FRP yachts, it is found that the effect of this coating system continues clearly about half a year, and by water-jet cleaning onto a ship hull after the lapse of ten months to one year, a similar result is expected again. The occurrence of exfoliation of a coated film from FRP surface is not observed up to a speed of 41.5 knots in our rotational experiments of disk plates. New coating methods to FRP ship hull in cases of newly coating, touch-up coating, re-coating, etc. are presented here.
1996-09-25