WORLD´S LARGEST CARBON SPAR CAP

In April 2019, a wind turbine blade manufacturer in China successfully finished the production of an 87.5m spar cap. The spar cap is one of the key structures inside a rotor blade and takes up most of the mechanical load. The new record spar cap is made of carbon fiber to reduce the part’s weight and achieve higher stiffness which is essential for rotor blades of such extreme length.

The spar cap was represented a technical challenge because of its length of 87.5m and its width of 800mm. Materials used for production of the part were carbon fiber UD 618gsm (unidirectional non-crimp fabric) with increased z-permeability material, which had been specially developed for the infusion of thick lay-ups as well as the latent resin system 3325 A/B from CTP AM with optimized viscosity and extended pot-life.

Pultruded profiles are production-ready carbon composites for infrastructure applications, deep sea exploration, wind energy, and other applications benefiting from the unique properties of pultruded carbon fiber parts.

Offshore Wind Turbine, Offshore Wind Blade, CFRP Wind Blade, Wind Blade Spar Cap, Pultrusion, Pultruded Profiles, Wind Energy Carbon Fiber