General Electric Company

Sabic Innovative Plastics IP B.v.

Jason Testa

Rainer Koeniger

Mohamad Sultan

Paul Dean Sybert

Bharat S Bagepalli

James Edward Pickett

Wendy Wenling Lin

Jon Michael Malinoski

Glen David Merfeld

Sumeet Jain

Michael Todd Luttrell

Rachel Marie Suffield

Christopher Michael Eastman

Carlos Eduardo Latorre

Embodiments of the present application generally provide for wind turbine blade spar caps comprising composite materials prepared using a low viscosity resin system and a high density fabric and methods for their manufacture. In particular embodiment, the low viscosity resin system has a viscosity in the range of about 1 to about 100 centipoises at a temperature in the range of about 0&#xb0; C. to about 125&#xb0; C. during the preparation of the composite material. By using low viscosity resin systems, composite materials have been prepared having a fiber volume fraction of greater than about 65% and a composite modulus of greater than 48000 MPa.

Method for manufacture of an infused spar cap using a low viscosity matrix material

A thermosetting polymer material capable of being used in powder coatings. The thermosetting polymer material includes at least one hydroxyl functional aliphatic polycarbonates that is formulated and crosslinked with isocyanates to yield a thermoset organic coating material. These materials provide improved weatherability as compared to prior art powder coating materials while also being less expensive than prior art materials utilizing fluorinated polymers.

Aliphatic polycarbonates for use in thermosetting powder coatings

A blade of a wind turbine is provided having an improved spar cap. The spar cap includes at least one trench extending in a substantially span-wise direction in at least a portion of the spar cap. At least one shear web is connected to the spar cap. At least a portion of the shear web is positioned within the trench of the spar cap.

Spar cap for wind turbine blades

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Simpsonville, SC, United States of America

Jason Testa