JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 50

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Performance versus E-glass Utilizing a proprietary glass formulation designed by AGY to maximize performance properties while allowing for high volume and economical manufacture, the S-1 HM rovings provide significantly higher modulus and enhanced fatigue performance versus traditional E-glass for wind turbine blades. These rovings are the highest tensile modulus glass fibre available (90 GPa). These property improvements versus typical E-glass will enable manufacturers to make larger blades, which produce more energy. AGY rovings are specifically aimed at areas of the blade where high-performance glass will allow weight to be saved and where the extra performance of S-1 HM rovings versus a traditional E-glass will be evident, for example in the spar and spar caps, leading and trailing edge and blade root.

High-heat performance is essential for overhead conductors because the transmission of electricity inherently builds heat. The higher the current, the higher the heat. In contingency operations, the conductor cannot fail due to developed heat. In addition to toughness and highheat performance, the CRAC also has the ability to mitigate line loss. All conductors have some line loss. However, using a composite core can reduce the loss by as much as 30%. This increased efficiency can result in reduced carbon footprints for the power

generator and a cost savings in fuel. As the demand for power continues to increase, re-conductoring is a more efficient way to improve transmission capacity. It is not possible to simply add transmission corridors to increase delivery due to the cost, and to the many environmental hurdles. So, the alternative is to re-conductor with high-capacity/more efficient conductors capable of delivering more electricity on the same towers with essentially the same hardware. New lines
The Ampstar CRAC offers equal or better mechanical properties

are also being designed with an eye for efficiency. Since this conductor is stronger, the spacing and size of towers and the purchase of rights-of-way become less costly. This is a major cost advantage. n
More information: www.agy.com www.ctgf.com

Ashland Is Your Trusted Partner for Pultrusion Products

Ashland offers a host of products designed for the pultrusion process including Derakane™, Hetron™, Modar™ and Aropol™ resins. Ashland’s resins are • Weather, UV and corrosion resistant • Adaptable to a variety of structural needs • Compliant for many fire resistance solutions Ashland’s products enable the manufacture of complex profiles with high quality appearance and surface finish while maximizing line speed, including our Envirez™ resins, which contain a significant amount of renewable materials offering a greener solution for your pultrusion products without compromising resin quality! Visit ashland.com to learn more or contact our European sales team at PMeuropesales@ashland.com.

® Registered trademark, Ashland or its subsidiaries, registered in various countries ™ Trademark, Ashland or its subsidiaries, registered in various countries * Trademark owned by a third party © 2012, Ashland AD-11637

With good chemistry great things happen.™

50 jec composites magazine / No73 June 2012

http://www.agy.com http://www.ctgf.com http://www.ashland.com

JEC COMPOSITES MAGAZINE - Issue #73 - June 2012

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #73 - June 2012