Constellation, le dépôt institutionnel de l'Université du Québec à Chicoutimi

Résumé

This paper depicts icephobic coating performances of 274 different coatings, including 11 grease-type coatings, which were tested over the past 10 years in various research projects at the Anti-Icing Materials International Laboratory (AMIL). Icephobic performance is evaluated using two comparative test methods. The first method, the ice Centrifuge Adhesion Test (CAT), measures the force required to separate the accreted ice from the coating (e.g. adhesive failure). The test involves simultaneously icing, under supercooled precipitation, the extremity of bare reference and freshly coated aluminum samples. The ice adhesion shear stress is calculated from the ice detachment rotation speed. The results are reported as Adhesion Reduction Factor (ARF), which is the ice adhesion stress on the bare aluminum reference samples divided by the ice adhesion stress on the coated samples. The second method is the Static ice Accumulation Test (SAT), by which the amount of ice accumulated on coated substrates set up at incidence angles of 45° and 80° is compared to uncoated Al surfaces inclined at the same angles. The results are reported in terms of Accumulation Reduction Factor (ACCRF), which is the ice mass on the bare aluminum samples divided by that accumulated on the coated samples. Overall, the performance of tested coatings over the years remains similar with a wide range of ARF values, 0.5 to 1000, corresponding to stresses between 0.8 MPa and 0.0005 MPa, respectively.