Hydraulic and earth engineering – Marine structure or fabrication thereof – Structure protection
Patent
1993-03-08
1995-06-13
Taylor, Dennis L.
Hydraulic and earth engineering
Marine structure or fabrication thereof
Structure protection
204148, 204197, 405127, 405216, E02D 3100, C23F 1300
Patent
active
054236312
ABSTRACT:
The invention provides an antifouling structure that excels in antifouling performance and durability, dispenses with maintenance work, poses no toxicity problem, and is easily handled. The antifouling structure is in a flexible thin sheet, and comprises a copper alloy and an insulating material layer. The copper alloy has a Be content of 0.2 to 2.8% by weight. The insulating layer material, for instance, is made of at least one of methyl methacrylate-modified natural rubber, nitrile rubber and chlorinated rubber. This rubber is dissolved in a suitable solvent for primer or other treatment, coated on the required surface area of the copper alloy layer, and dried to obtain an insulating material layer having a given thickness. The antifouling structure is bonded to the inner wall of a water intake pipe to form a three-layer structure made up of iron, insulating material and beryllium-copper, thereby inhibiting deposition of marine organisms and enabling the function of inhibiting marine deposits to be maintained due to the continued liberation of copper or beryllium ions.
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NGK Insulators Ltd.
Taylor Dennis L.
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