Faster manufacturing combined with longer service life
Polyurethane composite materials in plant construction
According to the Global Wind Energy Council, the global installed capacity for wind power was more than 20 times higher in 2016 than in 2001. The full potential of this unique resource, however, is far from being fully exploited. To progress towards this goal, tomorrow’s wind-power technology will have to be not just environmentally friendly but economical as well. At Covestro we have developed a special polyurethane (PU) resin that can be combined with glass fiber fabrics to create new composite materials. PU’s superior mechanical properties offer production benefits without compromising on production reliability and product quality, thus providing a valuable stimulus to the wind energy value chain.
Compared to standard epoxy resins for blade production, PU infusion resins can help optimize blade design and reduce weight, which brings wind blade manufacturers significant benefits. This innovative raw material, which only recently has been applied in wind turbine blade production for the first time, makes lighter, longer and stronger blades possible. PU-infused wind turbine blades also display excellent mechanical performance and better fatigue resistance properties than conventional solutions such as epoxy.
The faster infusion and curing speeds of our PU infusion resins make shorter production cycles possible. PU resins’ lower viscosity and better fluidity help to speed up infusion, while the short curing times mean no post-curing is needed. And that enhances the efficiency of wind turbine blade production.