建材重防食用ウレタンエラストマー被覆の性能(塗覆装)(<特集>表面処理)

概要

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30 years have passed since steel construction materials were used for base of the marine structures. But their corrosion rate was over the estimation, so development of effective anticorrosive system have been expected. We examined the performance of 3 kinds of heavy duty coatings, urethane elastmer coating, tar urethane coating and powderd polyethylene coating which is able to be coated in the mill. Urethane elastmer coating is the best of 3 coatings. It had superior performance balance and especially excellent corrosion resistance because of the primer which could keep adhesion strength in wet condition even if without chromate treatment. Urethane elastmer coating wasn't damaged for driving test of coated steel sheet pile. Now, urethane elastmer coated steel construction materials have been widely used for base of marine structures.
1991-07-01