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For FDM/FFF, SABIC expects to launch Lexan PC and Ultem PEI healthcare-compliant filaments that meet ISO-10993 biocom- patibility standards, as well as a series of support materials for each of its build materials. Just last year, the company intro- duced the first of a new portfolio of filaments based on Ultem PEI, Cycolac ABS, and Lexan PC resins, which reportedly offer the same composition as the company's injection molding grades. The nominal diameter of all SABIC filaments is 1.79 mm ±0.05 mm, and they are available in a 1510-cc spool size. Here's how the new filaments are characterized: • Ultem AM9085F filament is a high-performance PEI manufac- tured from Ultem 9085 resin. It is said to provide high-heat resis- tance and mechanical strength, is UL 94V-0 compliant at 1.5 and 3.0 mm thicknesses, and meets FAR 25.853 and OSU 65/65 requirements with low FST (flame, smoke, and toxicity) evolu- tion. It is available in black and natural colors. • Cycolac AMMG94F filament is a general-purpose ABS made from Cycolac MG94 resin. It reportedly provides a balance of properties suitable for a wide variety of applications, and is UL 94HB com- pliant at 3.0 mm. It is available in black, white, and natural colors. • Lexan AM1110F is a general-purpose PC filament produced from Lexan HF1110 resin. It boasts higher heat resistance than general- purpose ABS filaments, is UL 94V-2 compliant at 3.0 mm, and is available in white. 'DIFFERENTIATED MATERIALS' AND MORE Last year, SABIC unveiled Lexan EXL AMHI240F filament, based on SABIC's Lexan EXL PC/siloxane copolymer and aimed for use in Stratasys' Fortus FDM printers, as well as other printers with suf- ficient temperature capability and an open-format architecture. Compared with standard PC, this material delivers up to four times better notched Izod impact at room temperature and up to three times better at -30 C, depending on print orientation. Lexan EXL filament also sports a heat-deflection temperature of 140 C, higher than that of general-purpose ABS filaments. It is initially offered in black, though white and other colors are in development. It meets UL 94V-0 at 3.0 mm in both flat (XY) and on-edge (XZ) orientations. Company sources confirm that this is the first of a planned series of "differentiated materials," noting that they aim to apply similar approaches to impact modification of other polymer systems to help expand the target application space for additive manufacturing. While SABIC will continue to be a supplier of resins to the additive manufacturing industry, it is also moving along the value chain to supply materials in printable form (filaments, powders) to help accelerate the adoption of additive manufacturing for end-use production. Having made significant investments in state-of- the-art equipment in its additive manufacturing Centers of Excellence in the U.S., The Netherlands, and Saudi Arabia, the company has internal process capability for FDM/FFF, SLS, and LFAM as well as a variety of other specialized printer technologies. It can convert raw materials into printable filament and powder forms, develop optimized print parameter sets, and conduct extensive performance testing on printed parts. For example, in the case of LFAM, SABIC can formulate unique compounds, evaluate their processing perfor- mance on its BAAM printer, and test printed part performance— all within a matter of days. In this way, SABIC offers customers materials that have been fully characterized as candidates for specific printing processes. Looking ahead to the next three to five years, SABIC officials expect to see a continued focus on the industrialization of additive manufacturing. This will require introduction of a wide variety of new materials. They also expect to see the continued evolution of design software and process capabilities to enable repeatable production capabilities. It is also likely that new additive manu- facturing processes will continue to be introduced, which offer improved part performance and reduced production costs. The "additive manufacturing ecosystem" will also remain highly collaborative as alliances are built across the value chain to bring new products to the market as efficiently as possible and build sufficient production capacity to support the growing demand for production parts. They also see the intersection of additive manufacturing and composites as an area that will receive increased focus in the near future. QUESTIONS ABOUT ADDITIVE MANUFACTURING? Visit the Additive Manufacturing Zone. For FDM/FFF, expect to see healthcare- compliant filaments that meet ISO-10993 biocompatibility standards, such as a new Ultem PEI filament used for this sterilization tray. 34 FEBRUARY 2018 Plastics Technology PTonline.com A D D I T I V E M A N U F A C T U R I N G Close -Up On Technolog y