Patent ID: 9581031
Date: 2017-02-28
CPC Classifications: C09D,F01D,F03D,F05B,Y02E,Y02P

Claim:
1. A method for protecting the surface of a wind turbine blade manufactured with composites by preventing aerodynamic profile modifications during its useful life that would consequently impair its level of performance, comprising steps of: a) sanding down an area on a leading edge of the blade intended for protection until its capacity of adherence attains a given level in relation with at least one of the following properties: glossiness, roughness, and surface tension; b) applying a first coating onto said area, comprising a two-component compound primer of a polyurethane nature and a thickness range falling within 400-600 μm; and c) applying a second coating to said area, comprising a two-component paint with a content of solids comprising 70-80%, including a base of aliphatic polyols as a binding agent and aliphatic polyisocyanate as a curing agent in a given proportion of 70-80% and 30-20% of its mass respectively, and a thickness range falling within 200-250, wherein the second coating further comprises nanoparticles of hydrophilic silicon oxides and fluorinated polyhedral oligomeric silsesquioxanes.