Polyurethane infusion resins from Bayer MaterialScience are suitable for the industrial manufacture of wind turbine blades, the company reports. (Picture courtesy of Bayer MaterialScience.)
Polyurethane infusion resins from Bayer MaterialScience are suitable for the industrial manufacture of wind turbine blades, the company reports. (Picture courtesy of Bayer MaterialScience.)

"The use of polyurethane resins could reduce the cycle time per blade from 16 to 24 hours currently to 7 to 8 hours, thus significantly increasing productivity," reports Kim Harnow Klausen, head of the new Bayer MaterialScience global wind power competence centre, which is located in Otterup, Denmark.

"We are working to cut the cycle time still further."

The faster cycle times are because polyurethane resins are more free-flowing than the epoxy resins and unsaturated polyester resins used now, Bayer reports. They spread better in the mould and can be processed more quickly, it says, and they also harden faster and under simplified conditions.

Bayer MaterialScience is confident that automated manufacture of blades using robots will also be possible.

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