Study on Ice Abrasion Test Method of Coating Paint for Ice-Class Vessels

This study describes the ice abrasion test method of commercial coatings for ice-class vessel. The tested specimens are composed of three different coatings: an ice protection coating (IPC), a medium bonding coating (MBC), and an anti-fouling coating (AFC). The abrasion event between ice and coatings was carried out at the ambient temperature of near 0°C, and the surface roughness, and frictional coefficient were measured before and after the abrasion test. In addition, the Ethylene glycol/ Aliphatic detergent (EG/AD) model ice is standard model ice in the KRISO ice model basin and its mechanical properties are similar with the properties of the EG/AD/S model ice was used in this study. The large friction measurement device we used in this study can move up to 2 m, and measures the friction force of the plate over the ice and makes ice abrasion event with model ice. The correlation between the roughness and the coefficient of friction was derived as ice abrasion event progresses. In case of the IPC, the surface roughness increases as the ice abrasion test increases, therefore, a frictional resistance is also bigger and bigger. However, the results for the MBC and the AFC are different because the surface roughnesses were not pretty much changed according to the ice abrasion and the frictional resistances are independent on the ice abrasion. This study can contribute to the development of ice abrasion test method.