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돌리를 이용한 도막 부착력 시험의 영향 인자에 관한 연구
백윤호 ( Yun Ho Ba다 ),손성모 ( Seong Mo Son ),박충서 ( Chung Seo Park ) 한국부식방식학회 2014 Corrosion Science and Technology Vol.13 No.5
Establishment of adhesion strength measurement procedure for marine epoxy coatings was conducted in order to ensure reliability of the test results. It was found that (1) the increase in thickness of the substrates would induce increase of pull-off strength. Especially, the increase in adhesion strength with the substrate thickness increment was attributed to the transition of stress mode to the pure tensile mode excluding bending effect. (2) The longer curing time, the higher pull-off strength. It may be due to higher cross-linking density of the coating (3) The pull-off strength increases as coating thickness increases due to the diminishment of bending effect (4) The longer drying time after water immersion, the higher pull-off strength. It may be due to the evaporation of water molecule at the coating-substrate interface.