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Huntsman Advanced Materials helps to harness more of the windís energy | Europe

Huntsman Advanced Materials helps to harness more of the wind?s energy

Increased expectations for energy generation from wind power have led to the growth in the size of wind turbines, particularly in offshore wind farms. In what has become a rapid growth phase for the industry, certain technical and quality-related issues have emerged, creating significant challenges which manufacturing and material innovations offer the power to overcome. Here Nastassja Rothe, Wind Energy Marketing Manager for Europe, from Huntsman Advanced Materials reports.

The trend in increasing turbine size has created the need for bigger rotor blades to broaden the sweep area and ability to capture more energy. Rotor blades over 50 metres are now gaining an increasingly larger market share and 60 metre blades are set to become more commonplace. The development of 70-80 metre blades has started and the 100 metre is also being considered for offshore applications.

The increasing length of offshore wind turbine blades has prompted the more widespread use of advanced composite materials which in turn has led to growing requirements for new materials and manufacturing methods.

With larger blades come more complex tooling and composite mold designs, longer production times and higher processing costs. Larger blades also create greater stress on the structural, mechanical and gear components of the turbine. Taking all these factors into account, the manufacturers are very much focused on the continuous improvement of wind turbine performance.

As blades get bigger, weight and cost needs to decrease and quality needs to improve. Manufacturing and material innovations are mandatory for making this a cost effective renewable technology.

Requirements for higher performance materials, with an emphasis on lowering toxic risk while offering very good, cost-effective processing conditions is a key area for Huntsman Advanced Materials.

The company continues to invest in these market developments in order to provide a solution to the advanced processing requirements and mechanical property demands of today?s larger wind blades.

Huntsman offers a comprehensive range of Germanischer Lloyd (GL) approved Araldite epoxy resin systems which meet stringent processing and performance requirements for composite mold production and wind blade manufacturing.

As the industry looks to save time and money and improve efficiencies, fabrication processes for composites have come under the spotlight. The formulation of epoxy-based resin systems that can be used to vacuum infuse dry fibres or preforms holds significant structural benefits for producing large, complex composite parts with less than 1% void content and controllable resin-to-fibre ratio. This leads to increased strength as well as predictable performance and integrity of the finished part.

The company?s GL approved epoxy resins are designed with enhanced mechanical and processing properties to improve product quality, lower consistent blade weight, deliver high strength and fatigue properties and enhance impact resistance. The low viscosities of these systems facilitate fast infusion processing and all importantly, reduced production cycles.
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Posted by Gloria Llopis | 2012-04-25