NOV 2018


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NOVEMBER 2018 40 CompositesWorld New Products » IN-MOLD MATERIAL SYSTEMS Updates in in-mold electronic materials DuPont Electronics & Imaging (Wilmington, DE, US) has announced that it is launching its second generation of in-mold electronic (IME) materials with key advancements in its electrically conductive adhesive, protection encapsulant and crossover dielectric. IME technology enables functions such as touch controls and lighting to be directly embedded inside of plastic parts by printing circuits onto plastic sheets, which are then thermoformed and injection molded. This is said to allow product engineers to reduce weight and cost while increasing design aesthetics and functionality in everything from car dashboards to home appliances, using fewer parts and manufacturing steps. DuPont's IME second-generation advancements include a new electrically conductive adhesive that is more flexible than epoxy- based systems, a protection encapsulant for use as tie-coat and top seal, and crossover dielectric that reduces the number of layers required. » 5-AXIS MACHINING 5-axis CNC machine for ultra-hard materials Synova (Duillier, Switzerland) has announced the launch of a new CNC machine with full 5-axis capability to process complex three-dimensional geometries. Applications targeted include the machining of industrial diamond employed in toolmaking as well as various composite materials used in aviation. The LCS 305 laser system is said to offer accuracy, quality and speed with highly dynamic axes, water-cooled linear and torque motors, a mineral casting machine bed and a fully automatic offset calibration system. According to Synova, the flexible Laser MicroJet (LMJ) system enables 3D cutting and shaping of large and multi-tooth diamond tools resulting in smooth cutting surfaces and sharp edges for ultra-hard materials such as PCD, SCD, natural diamond or tungsten carbide. The machine's two highly dynamic torque motor-driven rotary axes also allow chamfering for K-land edges and single or multiple clearance angles. Tools report- edly can be exchanged quickly and with accuracy thanks to the HSK 63 tool holder. The LCS 305 laser system with water jet-guided laser technology is said to be capable of precision-machining parts made of ceramic-matrix composites (CMCs) while protecting the material from heat-related effects. Low-weight and heat-resistant CMCs are being used for hot-section aeroengine components to increase engine and aircraft efficiency. The LMJ "wet laser" technology cools workpieces while washing away debris. The water jet maintains the laser's focus, creating a cylindrical laser beam that reportedly results in parallel walls and tight kerf widths. » THERMOPLASTIC COMPOSITES Wear-resistant thermoplastic composite Greene Tweed (Kulpsville, PA, US) has introduced WR 650, a wear- resistant thermoplastic composite with a three-dimensional carbon fiber architecture that reportedly offers enhanced perfor- mance over other PFA-based materials. According to Greene Tweed, WR 650 offers a 2.5 times higher PV limit in dry run conditions and a coefficient of thermal expansion four times lower in the axial direction. WR 650 reportedly offers enhanced dry run capability, good chemical resistance and an operating temperature up to 260°C/500°F. Its higher fiber content is said to provide a harder material over a wide range of operating temperatures. » RESIN SYSTEMS UV-curable resins for thermoset composites Allnex (Alpharetta, GA, US) has announced its range of UV-curable resins, falling under the EBECRYL brand, engineered for the manufac- ture of thermoset GFRP composites having regular geometries. The EBECRYL resins will cure upon exposure to UV light, allowing composites manufacturers to cure with UV lamps instead of a thermal curing oven. While this makes UV curing impractical for carbon fiber composites and irregularly shaped laminates, the company says that several benefits can be captured when the use of UV technology is feasible. The styrene-free resins are said to reduce energy consumption by up to 90%, supporting green initiatives. The one-component systems reportedly have no pot life limitations and produce almost no waste. A high throughput per line and shortened cycle times are said to be possible thanks to fast curing times. NEW PRODUCTS

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