無公害防汚塗料を使用した船体・プロペラ塗装実験

概要

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The fouling on ship hull and propeller surface by the attachment of sea water organisms has bad effects on the propulsive performance. This causes an increse in the frictional resistance between hull and water resulting in the loss of speed and the increse of fuel consumption.<BR>For the prevention of this marine fouling, anti-fouling paints (AF paints) containing noxious compounds such as organic tin and cuprous oxide have been generally coated.<BR>In our experiment, a new typed nontoxic paint that is in no fear of polluting sea environment is coated to ship hull and propeller surface as a new attempt. This paint is made of a special silicon regin, and has useful physical properties for the prevention of attaching organisms, low critical surface tension.<BR>The experiments using a training ship, a tug-boat, a pleasure-boat and a small fishing boat are carried out for one year.<BR>Obtained results are as follows: (1) The nontoxic paint used in our experiment shows a good effect for the prevention of attaching organisms on the FRP-hull and the propeller surface. (2) Attaching organisms on the film of the paint are easily removed by water-jet washing at the pressure as low as 30-40 kgf/cm2. (3) The adhesive force of barnacles on the film of the paint is extremely small and has no particular relationship with the size of the shell.
社団法人日本マリンエンジニアリング学会の論文