OCT 2018


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OCTOBER 2018 22 CompositesWorld Curing agents, reactive diluents, tougheners, bio-based resins Dixie Chemical (Pasadena, TX, US) is emphasizing its line of anhydride curing agents, reactive diluents, tougheners, resins and bio-based raw materials. Dixie's line includes modified anhydrides, which combine the performance benefits of specialty additives such as accelerators and mold release agents. Dixie also offers pre-catalyzed anhydride technology, leading to novel anhydride curing agents such as ECA 619 and NMA 419 for epoxy composites. These curatives allow for epoxy formulations with low viscosities, long pot lives, fast cures and high glass transition temperatures (Tg), suitable for high-speed pultrusion processes. Dixie also offers low-viscosity epoxy-anhydride formula- tions for infusion processes such as resin transfer molding (RTM) and high-pressure RIM. These systems cure at relatively low temperatures, opening up applications like damage-tolerant panels, cured-in-place pipe (CIPP) and electrical castings. Booth U19. Three-press hydraulic system for molding medical parts French Oil Mill Machinery Co. (Piqua, OH, US) and TMP, A Division of French, are featuring a self-contained, three-press system with one central press controller for compression molding of composite medical parts. Each compression press is designed with three daylights, totaling nine pressing surfaces for increased production rates. Each press is capable of 10 tons pressing capacity. The 6-inch square solid-steel plate pressing surfaces are designed with one heat-and-cool zone per platen and independent setpoints on each lower and upper platen, for energy efficiency and consistent temperatures throughout the molding process. Each pressing surface is equipped with a programmable fan to accelerate temperature reduction on the mold during the cooling cycle. The press controller consists of a NEMA-type enclosure and is mounted on the side of the press system. The new generation PLC microprocessor system features a 10.5-inch color screen interface. The press controller shows a digital readout of press force for sampling, concurrent with sampling of temperature. Press force is recorded in the system, as well as time and temperature history, which can be used to confirm process repeatability. Booth N29. Thermocouple assemblies for aerospace applications TE Wire & Cable is showcasing its thermocouple assemblies designed for demanding high-temperature aerospace autoclave applications. The company's AccuClave-series products are said to provide labor savings, ease of installation/replacement, simple TRAC traceability and reduced non-conformances. The AccuClave autoclave thermo- couple assemblies deliver high-accuracy temperature measurement and ensure that aerospace composites materials are properly cured during processing. They are available in temperatures ranging to 300°C/572°F, and are leak-proof and easily replaced after one or more uses. TE Wire & Cable is also showcasing several of its other products. Its AccuFlex assemblies are low-profile flat thermocouple cable assemblies that come with TRAC traceability. TE Wire & Cable also has partnered with Plataine to develop its IIot Smart AccuClave thermocouples for use in lead/lag, load and tool thermocouples, out-of-autoclave temperature monitoring, oven curing, hot bonder thermocouples and autoclave processing. AccuClave-X autoclave thermocouple cable extensions bridge the long runs between thermocouples and instrumentation or jack panels. They are reusable, remaining in place in the autoclave, and are available in lengths of 10, 20 and 30 ft. AccuConnect assemblies are multi-circuit thermo- couple extension cable harnesses that can be used to improve cable connectivity in autoclave applications. AccuConnect can be supplied as six, 12 or 24 cables terminated with a multi-pin connector on one end with free-floating, independent male or female connections at the opposite end. They are said to reduce autoclave setup time by up to 90% and are reusable. SkinTemp Flat Junction tool thermocouples have fiberglass construction rated for continuous use ranging to 510°C/950°F. They are used for a parallel fit on tools, and come in type J, K, T, N or E thermocouple. The Bayonet Junction with Twist & Lock Adapter has fiberglass construction rated for continuous use ranging to 510°C/950°F. It is used for constant contact on tools, and comes in type J, K, T or E thermocouple. SkinTemp and the Bayonet Junction are also available in FEP, PFA and polyimide. Booth K31. Prepreg system for thermoplastic composites C. A. Litzler Co. Inc. (Cleveland, OH, US) is debuting its improved standard thermoplastic prepreg machines, available for water-based and solvent-based resins in various widths and fibers, for use with multiple resins systems. The prepregger features stainless steel, recirculating slurry dip tanks; mixing and distribution manifolds; submerged rollers to encourage wetting; water/solvent removal and resin pre-heating; infrared heating and a heated die. Litzler is also emphasizing in its booth the company's dryer technology, compaction rolls, tow-spreading capability and expertise in controls design and automation. Booth AA21. SHOW PREVIEW

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