NetComposites
Thermwood

Strut Profiles Move to Pultruded Polyurethane

23 April 2010

StrutTech of Redmond, Wash., is trading in its traditional pultruded strut channels made of vinyl ester and polyester for a pultruded profile made of polyurethane materials from BaySystems.

The processing technology for the strut profiles was developed by Martin Pultrusion Group in cooperation with engineers from Bayer MaterialScience.

The StrutTech profiles are pultruded using the Baydur PUL 2500 two-component polyurethane system marketed by BaySystems. Specially designed for use in pultrusion, Bayer MaterialScience say that it offers excellent composite properties, including superior elongation to failure, shear strength and impact resistance. The material is designed so that it can be processed on low-pressure equipment using static-mixing.

The StrutTech profiles are produced by Martin Pultrusion’s affiliated company, Viapul, which has the capabilities of utilizing any composite material, but focuses on polyurethanes. Prior to the switch to polyurethane chemistry, StrutTech and its customers had to keep both vinyl ester and polyester in inventory, as the struts were made from both of these materials.

StrutTech offers strut profiles for a variety of end uses, such as conduit supports for electrical applications, piping system supports for the mechanical industry, and more. Often employed in salt water aquariums and chemical wastewater treatment plants, the material is strong, corrosion resistant, lightweight and easy to fabricate.

“What we’ve seen with the new polyurethane composite resin system will provide us with real market advantages,” said David Todd, president, StrutTech. “These materials are stronger, and have the same corrosion-resistant properties as vinyl ester, but our pricing will be comparable to that of polyester.”

“StrutTech struts demonstrate Bayer MaterialScience LLC’s polyurethane as a viable alternative to vinyl ester and polyester for pultrusion applications,” said Harry George, head, Diversified Industries, New Applications, NAFTA, Bayer MaterialScience.