Saertex’s Carbon Fiber in the Largest Carbon Spar Cap

July 17 2017

SAERTEX has contributed to the prototype production of a wind turbine blade with probably the longest and thickest carbon fiber spar cap made in vacuum infusion technology so far.

In June 2017, a major Chinese wind turbine blade manufacturer successfully finished the production of an 83.6m blade prototype. A special feature of this blade is it´s spar cap, which takes up most of the mechanical load. The 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.

An infusion-optimized carbon fiber UD 618gsm (unidirectional non-crimp fabric) with increased z-permeability material was used from SAERTEX. The latent resin system 3325 A/B from CTP AM with optimized viscosity and extended pot-life was also used.

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