Wind turbine blade coating

Project Overview

Project Site: Yancheng, China

Project Category: Offshore Wind Power Equipment Coating & High Weather Resistance Anti-Corrosion Engineering

This project adopts our independently developed professional wind turbine blade coating system, which is specially tailored for harsh offshore wind farm operating environments. The complete coating system has passed comprehensive performance tests by CNAS accredited laboratories and obtained authoritative DNV certification, providing high-reliability long-term protection for offshore wind turbine blades. The solution has been successfully applied to the Yancheng offshore wind power project, solving the severe aging and corrosion problems of wind power equipment in high-salinity and high-UV marine environments.

On-Site Corrosion Challenges

Yancheng offshore wind farms feature a typical offshore marine climate with persistent high salt spray, intense ultraviolet radiation, and hot and humid weather throughout the year. Wind turbine blades are in long-term high-speed rotating operation, facing dual damage of environmental corrosion and mechanical wear. Ordinary coatings are prone to peeling, fading, cracking and edge abrasion, which will reduce blade aerodynamic performance, increase equipment operation failure rate, and bring high maintenance costs and potential safety hazards to offshore wind power projects. Therefore, the blade coating system requires ultra-high weather resistance, salt spray resistance, adhesion and wear resistance.

Professional Coating System & Technical Advantages

We provide a full-set four-layer professional wind turbine blade coating system to achieve all-round protection for offshore wind blades, covering all process layers:

1. Polyurethane Putty: Repair blade surface defects, smooth base surface, and improve the flatness of the coating base layer;

2. Solvent Free Polyurethane Gel-coatings: Form a dense anti-corrosion base film, effectively isolating external corrosive media;

3. Waterborne Acrylic Polyurethane Finish Paint: Provide excellent weather resistance, anti-fading and self-cleaning performance, maintaining long-term blade appearance and stable performance;

4. Polyurethane Leading-edge Protection Coating: Strengthen the protection of blade leading edges, resist high-speed wind erosion and mechanical wear.

The entire coating system has passed comprehensive performance tests from CNAS accredited laboratories, with excellent core indicators including adhesion, wear resistance and weather resistance. Among them, the adhesion test strictly complies with the international standard ISO 4624 (pull-off method) and has obtained official certification from the globally authoritative institution DNV, fully meeting the strict protection standards for offshore wind power equipment.

Project Benefits & Industry Value

After the application of the customized wind turbine blade coating system, the Yancheng offshore wind power blades achieve strong overall protection against marine high salt spray, strong UV rays and hot-humid erosion. The high-adhesion and wear-resistant coating effectively avoids common problems such as coating peeling, blade edge wear and surface aging, stably maintains the aerodynamic efficiency of wind turbine blades, and extends the service life of wind power equipment. Meanwhile, it greatly reduces the frequency of offshore equipment maintenance and overall operation costs. This DNV & CNAS certified professional coating solution provides a standardized and reliable protection model for large-scale offshore wind power blade anti-corrosion and wear-resistant projects.