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Epoxy vinyl ester offers advantages over epoxy in wind blade manufacture

According to researchers at Ashland Performance Materials, epoxy vinyl ester resins can improve the economics and speed of wind turbine blade manufacture compared to epoxy resins.

The research was presented by Kevin Lambrych, global wind energy technology leader for Ashland Performance Materials, at the American Composites Manufacturers Association (ACMA) annual trade show in Las Vegas last month.

Cost and speed to completion were two advantages highlighted by the research.

“When you compare the economics of epoxy blades to epoxy vinyl ester blades in manufacturing, there is an opportunity for a typical manufacturer to save approximately 25-30% per blade,” claims Lambrych. “Derakane epoxy vinyl ester resin also cures much more quickly than straight epoxy.”

Lambrych also compared dynamic mechanical properties and found that epoxy vinyl ester resins fall within the requirements established by Germanischer Lloyd, the global organisation that has established performance standards for the wind energy industry.

In comparison performance tests, Ashland’s Derakane epoxy vinyl ester resin delivers equivalent strength characteristics to epoxy resin and reaches its final curing stage in one-third less time.

Ashland Performance Materials is a commercial unit of USA-headquartered Ashland Inc (NYSE: ASH).




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Wind energy



Amanda Jacob said

04 March 2010
The manufacture of turbine blades using thermoplastics was covered recently in the feature Could-thermoplastics be the answer for utility-scale wind turbine blades':

Amanda Jacob
Editor, Reinforced Plastics

w.maruszczak said

03 March 2010
Fiber reinforced thermosetting polymers are not the only materials suitable for manufacturing wind blades. Continuous fiber reinforced thermoplastic fiber composites deliver outstanding long-term mechanical properties, permit on-site production of large components (including wind towers), exhibit excellent resistance to a wide variety of aggressive environments, are completely recyclable and deliver a much smaller carbon footprint - all at a lower cost.

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