OCT 2018


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OCTOBER 2018 20 CompositesWorld Versatile, customizable filament winding systems Engineering Technology Corp. (Entec, Salt Lake City, UT, US) is featuring its new line of standard filament winding systems, ranging from small tabletop models to premium production machines. The smallest winder, SS, is a low-cost machine designed for use in laboratories, universities and light production facilities. Mid-range winders, SM, feature sturdy, modular construction for full-scale production and support a range of options including additional axes and spindles. The largest winder, SL, is designed for heavy industry and aerospace and supports mandrels up to 2m diameter and 15m long. Rounding out the catalog, the fastest winder, CXG, is a multi-spindle machine specifically geared toward pressure vessels and the high-output demands of automotive manu- facturers. Entec also is emphasizing its custom equipment and process solutions. These systems range from filament winders to tape wrappers and fiber placement machines. Entec is a certified FANUC integrator and develops robotic solutions and process integration that support increased process flow and quality control standards in the industry. Booth F74. Preforms, 3D woven joints and thermal protection systems Bally Ribbon Mills (Bally, PA, US) is featuring its line of specialty fabrics and preforms, including 3D woven joints, thermal protec- tion systems (TPS) and other 3D structures. Bally Ribbon Mills uses 3D continuous weaving to create new joint structures and improve existing joints. 3D woven joints are available in "Pi," double "T," "H," and other complex net shapes. Bally Ribbon Mills says that because of the nature of the 3D weave, strength and support is translated in all three dimensions, thus enabling the join to reinforce the strength along the load paths of the substructures being joined together. These 3D woven shapes for joining can be tailored to suit the architecture of the structure itself, as well as the sub-components being joined. Bally Ribbon Mills' ability to vary yarn types, density, thickness and width, as well as resin type, allows the company to create fully customizable TPS to fit specific mission or application needs. Notable applications include heatshields and aircraft engine parts. Booth S49. Ultra-low density syntactic foam for core splicing Magnolia Advanced Materials (Atlanta, GA, US) is exhibiting Magnolia 7035, a new, ultra-low density syntactic foam for core splice applica- tions. Magnolia 7035 is a two-part epoxy paste that can be applied between the honeycomb sheets in the amount needed to bridge the gap. Magnolia 7035 cures at room temperature and can then be processed through a typical cure cycle for the face sheets. The pot life of the mixed resin is 30 minutes, and it develops handling strength in less than 2 hours. The cured density of Magnolia 7035 is comparable to foaming adhesives, but offers favorable mechanical properties up to 250°F. Because it is a syntactic, it is a closed cell foam and thus will give the adhesive better environmental resistance than the open cell foaming type. Magnolia notes that typically, splicing of honeycomb sandwich panels requires the use of foaming adhesives, which expand during a heat cure to bond the honeycomb sheets. This process can require cutting strips of core slice sheets to size and then placing the strips between the sheets of honeycomb. During cure, the foam expands to fill the gap and bond the adjacent sheets together. If the cut edge is irregular, then the space may be too large in some areas for the foam to fill and the resulting gaps will compromise the properties of the sandwich panel. Magnolia contends that Magnolia 7035 eliminates these problems while producing a lighter, stronger and more environmentally stable panel. Booth BB13. Range of industrial ovens LEWCO (Sandusky, OH, US) is exhibiting its line of industrial ovens, including a full range of batch ovens, conveyor ovens, drum ovens, tote ovens, hot boxes, drum heating tunnels, large field-assembled ovens and high-temperature furnaces. The company also emphasizes its capability to engineer and manufacture custom equipment made to customer specifications. Booth H62. Fly-away carbon fiber composites for aerospace Janicki Industries (Sedro-Woolley, WA, US) is emphasizing its ability to manufacture carbon fiber fly-away parts, tooling and proto- types for aerospace applications. Its JBXA prepreg cloth is offered in multiple configurations to match program needs. The cloth is pliable and designed to form complex shapes such as airfoils, fairings and control surfaces. It is durable, cures in an autoclave at 360°F, retains vacuum integrity after more than 100 cycles and enables long out times to accommodate large laminates. Booth T48. SHOW PREVIEW

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