Ahlstrom-Munksjo HighFlow Carbon Unidirectional Fabric

March 25 2019

The need came from Ahlstrom-Munksjo customers, who are trying to tackle the challenge of the ever-increasing size of wind turbine blades. Ahlstrom-Munksjo glass and carbon fiber composite team was able to develop a carbon fiber based unidirectional fabric. In a unidirectional (UD) fabric, the majority of fibers run in one direction only. The new fabric developed, can be laminated to 165 layers or even more in one shot. The previous record of infusing carbon fiber unidirectional fabric was 120 layers. The fabric was unidirectional carbon fiber 600g/m2.

"We are really excited about the new HighFlow Carbon unidirectional fabric. Our team in Mikkeli plant, Finland, did excellent work with this", says Pekka Helynranta, Vice President, Building & Wind. "HighFlow Carbon Wind Energy is specially designed for wind turbine blades to enable larger new generation wind turbines."

Bigger wind turbines can generate more energy. Increase in size means also increase in blade size. To optimize power generation blades should be lightweight and stiff. Until now, there wasn't a good solution to this. HighFlow Carbon solves this problem. By using Ahlstrom-Munksjo HighFlow fabrics, the infusion process itself is more reliable as there is a lower risk for unsaturated areas of carbon unidirectional fabric. In this new range of products the permeability of fabrics is totally engineerable, the flow rate and direction can be controlled.

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