Anti-icing effects of different nano hydrophobic coatings on two parallelized square cylinders test model were studied using icing experimental method in the main test section of 0.3m×0.2m icing wind tunnel under different icing weather conditions.The ice shapes on left and right parallelized square cylinders test model were measured and compared respectively.The quantitative method of evaluating anti-icing effect was established on the basis of nine geometric characteristics parameters of ice profile.The nondimensional deviation of ice profile geometric characteristics parameters were calculated and analyzed between the coated model and the clean model.The study shows that the quantitative test evaluation method based on ice profile geometric characteristics parameters can evaluate the anti-icing effect of nano hydrophobic coating.The silicone rubber coating and other coatings added in different nano particles have some anti-icing capability.The silicone rubber coating added in different proportion of nano particles show comparative anti-icing capability compared with the silicone rubber coating in the present study.Adding small amount of nano hydrophobic particles in the silicone rubber coating can construct some micro-nano structures

which can enhance the hydrophobic and anti-icing effects.Therefore

it is a valuable way to fabricate anti-icing coating by adding different nano hydrophobic particles into the silicone rubber coating.But it is not easy for the nano hydrophobic particles to form a stable micro-nano structures with hydrophobic and anti-icing performance on the silicone rubber coating just by physical mixing and stirring methods.The nano hydrophobic coating can reduce the icing velocity

but cant stop icing phenomena completely.