| 摘要 |
PURPOSE:To raise the density of a copper ion that melts into water, and enable the copper ion to melt out under stable conditions for long period by adding a specific water soluble high polymeric material suitable for gel coating and respective antifouling agents into a gel coating layer containing copper or a copper group alloy. CONSTITUTION:When copper is added as an antifouling agent into a gel coating material, a kind or more water soluble high polymeric materials selected from a group consisting of cellulose, modified starch, gelatin, gum Arabic, and locust bean gum are added to the gel coating layer. When a copper group alloy is added as an antifouling agent into a gel coating layer, a kind or more water soluble high polymeric materials selected from a group consisting of cellulose, methyl cellulose, gelatin, gum Arabic, and locust bean gum are added to the gel coating layer. For matrix resin used for the gel coating layer, in order to improve the seawater solubility of the gel coat layer, flexible orthophthalate unsaturated polyester resin is preferably used that has relatively good seawater solubility in unsaturated polyester resin. |
