High-Performance Composites

MAY 2014

High-Performance Composites is read by qualified composites industry professionals in the fields of continuous carbon fiber and other high-performance composites as well as the associated end-markets of aerospace, military, and automotive.

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M A Y 2 0 1 4 | 7 5 The AP products, however, interact with the internal chemistries of epoxy and polyester resins to create the intumescent effect without other additives. As a result, additive loadings, part weight and cost can be reduced. Clariant plans to work with aerospace primes to qualify the Exolit AP range for aircraft interiors. www.clariant.com Closed molding consumables Airtech International (Huntington Beach, Calif.) introduced two extruded fuoropolymer flms: The frst, Wrightlease 2R, is coated with a rubber-based (nonsilicone) pressure-sensitive adhesive. Its light green color is visible on most substrates. It offers multiple releases from all common resin systems and good adhesion to metals, composites, tooling blocks and rubber tooling. Its high elongation and strength reportedly ensures coverage of complex contoured surfaces. The other, Toolwright 3, is coated with a silicone pressure-sensitive adhesive and is thinner and, therefore, more easily applied over complex con- tours (see photo) than Toolwright 5. Toolwright 3 offers not only high elonga- tion and strength but high-temperature resistance and easy cleanup after re- moval. Benefts include extended tool life, tear resistance, fast application and improved part surface quality. Also on offer were two reformulated products: Airseal 2 sealant tape features improved tack, feel and cleanup as well as ex- tended shelf life. Designed for room- and medium-temperature applications, it also can be used for vacuum bag applications at higher temperatures (Airseal 2 Tacky, a softer version, has better tack in colder environments). Airpad HTX now reportedly performs better than competing rubber caul sheet materials. Benefts include low shrinkage; dimensional stability; good bonding to reinforcing layers and surfacing release flms; aggressive self-bonding for easier repairs; high Shore hardness for better pressure intensifcation, and good solvent resistance. www.airtechonline.com Thinner foils for LSP Lightning strike protection (LSP) material specialist Dexmet (Wallingford, Conn.) touted new additions to its MicroGrid expanded metal foils line: Foils that feature reduced planar thickness with a smaller open area in the grid. The foils offer the same conductivity as thicker foils because they have identical mass. But the installed foils give the airframer an LSP solution that is less costly and, importantly, reduces aircraft weight, because a thinner adhesive layer is required during application. Dexmet's thinnest copper foil, for ex- ample, weighs 175 g/m 2 but is only 0.002 inch/0.045 mm thick. All Dexmet foils are available in widths of 36 inches and 52 inches (914 mm and 1,320 mm) — they are reportedly the only LSP foils available in the larger width. www.dexmet.com Greensboro, NC TEL (336) 373.5933 Hampton, NH TEL (603) 926.1910 www.northerncomposites.com email: info@northerncomposites.com 1 9 6 5 - 2 0 1 4 N O R T H E R N C O M P O S I T E S 49 th ANNIVERSARY ISO9001:2008 AS9120-A Technical sales & service for: CYTEC PROCESS MATERIALS: (Formerly Richmond Aircraft Products) VAC-PAK ® vacuum bagging flms, release flms, breather and bleeder fabrics, vacuum bag sealant tapes, pressure sensitive tapes, valves and hoses. MITSUBISHI RAYON CARBON FIBER AND COMPOSITES: (Formerly Newport) Woven and undirectional structural prepegs, flm adhesives, core splice flm and TOWPREG impregnated rovings. PRECISION FABRICS GROUP: Nylon, polyester, and Kevlar® peel ply, Value Ply and release fabrics. BGF INDUSTRIES: Woven E-glass, S-glass, aramid and carbon fber fabrics. HENKEL: FREKOTE ® : Mold sealing, cleaning and release products. HYSOL ® : Aerospace paste adhesives, specialty resins and primers. ALODINE ® and TURCO ® : Surface treatment systems, cleaners, deoxidizers, etchants, conversion coatings, strippers and maskants. TENCATE: AmberTool and 3M nanosilica fortifed tooling prepregs. DIAB: DIVINYCELL ® : F, P, H, HT & HP grade foam sandwich cores. BCC: Manufacturer of plastic tooling systems including modeling board, epoxy, urethane and silicone materials. 0514HPC NewProducts-OK.indd 75 4/22/2014 3:38:08 PM

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