Wind Power Facilities with ROHACELL®

ROHACELL^® IG has long been used for building the ribs or shells of wind tower rotor blades.

Since ROHACELL^® is extremely temperature-resistant, increased process temperatures used in reduced cycle times are not a problem. Manufacturers actually prefer short cycle times because they allow for optimal capacity use of expensive tools. Other structural foams quickly meet their limitations in these temperature ranges, especially when exothermal reactions create even greater heat locally.

However, such stable curing processes not only improve the quality of the components, but also eliminate expensive follow-up work. As a consequence, the use of high-quality PMI foam pays off in every regard.

Especially the ROHACELL^® IG-F with smaller cell size designed for liquid-resin-infusion and consequently lower resin up-take is able to reduce the weight of the blades. Optimized resin up-take and high specific mechanical core values lead to a lower rotor weight. Cost savings in the turbine assembly, lower breakaway torque and weight saving in the mast design are additional effects.

For support with FEM calculations, the selection of suitable densities, and information about curing parameters, please contact our engineering service.