ADHESIVE COATING VALUE BASED ON THE MAIN INGREDIENT OF SHIP PAINT

Coatings are important instruments in inhibiting the corrosion rate. Field facts in various Indonesian shipping industries show that the choice of organic materials as coating for ship paint uses epoxy, vinyl and polyurethane. Therefore an experimental study is needed on the adhesion ability of paint as a coating for ship armor with these three types of organic materials. The preparation of steel specimens with type ASTM A36 is carried out by blasting, visual inspection standard ISO 8501-1, and roughness test standard ISO 8503-4. Painting of specimens by measuring the thickness of the paint in the wet conditions ASTM D4414 standard and ASTM D4138 standard dry conditions. Treatment of specimens in two conditions, are: tropichal weather condition and salt spray conditon. Observation of specimens by scanning electron microscope and adhesion test standard ASTM D4541-02. The final result shows that the best adhesion ability of the main paint coating in tropical weather conditions was a polyurethane coating with no blister characteristics, but there are fractures on the surface of the material. While the main material for the best coating in salt spray conditions was epoxy coating with characteristics that are resistant to blisters and blends with the surface of the material.

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