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Materials

Covestro advances polyurethane blades

by Michael McCoy
September 12, 2016 | APPEARED IN VOLUME 94, ISSUE 36

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Credit: Covestro
Covestro and partners fabricated this 37.5-meter wind turbine blade.
Credit: Covestro
Covestro and partners fabricated this 37.5-meter wind turbine blade.

Working in China with partners, the German polymer maker Covestro has created what it calls the first-ever large polyurethane rotor blade for wind turbines. The company is promoting polyurethane as an alternative to epoxy resins in making fiberglass-reinforced polymer parts. It says polyurethane flows more easily, ensures better wetting of glass fibers, and cures more quickly.

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