Thin-film coating protects wind-turbine blades

An advanced “thin-film” HSP-7401 Polyurethane Primer and AUE-50000 Series Polyurethane Topcoat are available for wind-turbine blades. The coating uses a thinner to reduce labor, material use, and weight while providing unparalleled adhesion, erosion resistance, and flexibility protection properties. Technical teams from developer PPG and from around the world collaborated on the system.

“The HSP-7401 primer and AUE-50000 Series topcoat sets a new standard for efficiency and will significantly increase blade protection and durability while also lowering production and life-cycle costs,” says  Dave Chapman, PPG global marketing director, commercial coatings.

The coating series was developed through extensive global testing against a wide range of blade coating standards and specifications. The polyurethane primer and topcoat components were designed together. Using up to 60% less applied film than conventional polyurethane multicoats, they provide outstanding adhesion and flexibility. HSP-7401 primer delivers outstanding adhesion to the composite substrate, the primary attribute required in wind turbine blade finishing. It is quick-drying and may be topcoated in as little as 30 minutes.

AUE-50000 is an extremely erosion-resistant, weather-resilient polyurethane topcoat that offers the smoothness and protection from environmental attack elements required in wind blade applications. The system is also VOC-compliant to 420 g/l. The two components balance performance properties that deliver long-term, low maintenance asset protection in any operating environment including challenging desert and offshore situations. PPG has been producing coatings for wind turbine blades for more than 30 years.

PPG Commercial Coatings
www.ppgcommercialcoatings.com.