| 摘要 |
PURPOSE: A buoy for aquafarming is provided to prevent the breakage of collision by increasing the tension strength thereof, to extend the life thereof, and to prevent the ocean contamination caused by the bits of broken buoy. CONSTITUTION: A buoy(1) for a breeding farm has a hole(11) molded in the inner circumference of a hollow typed body, and a rope connection groove(12) formed on the outer circumference thereof. The rope connection groove is used to install a farm. The buoy is made by bonding buoy foams on an adhesion part(13) thereof. The buoy foam is formed by a compound of injection molding foam for crosslinking, comprised of low density polyethylene and ethylene vinylacetate. The compound consists of a basic resin including ethylene vinylacetate of 30 to 70 percentage, polyethylene of 40 to 70 percentage, a mixture of calcium carbonate and magnesium carbonate as a filler, silane as an additive, trimethylolpropane trimethacrylate as a crosslinking promoting agent, and azodicarbone amid as a foaming agent, dicumyl peroxide as a crosslinking agent. If the basic resin is 100 weight percentage, the filler takes 10 to 15 weight percentage, the additive takes 1 to 2 weight percentage, the crosslinking promoting agent takes 3.5 to 6 weight percentage, the foaming agent takes 6 to 9 weight percentage, and the crosslinking agent takes 0.6 to 0.9 weight percentage.
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