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MATERIALS | 3D PRINT COMPOUNDS


Right: Lehvoss is supplying materials for the Livrea yacht, claimed to be the first 3D printed sail boat


Below: This metallic-look spinner toy is manufactured using filament materials


developed by Gabriel-Chemie, Schlenk Metallic Pigments and Herz


3D printed parts made from the new PEBA powder show a high degree of flexibility and good resistance to chemicals and durability over a temperature range from -40°C to 90°C. The powder is also ideally suited for the manufacture of functional 3D high-tech plastic parts – for prototypes as well as series products. The material is suitable for a variety of powder-based 3D printing technologies such as laser sintering, high speed sintering or binder jetting. The flexible synthetic powder has been opti- mised for use in EOS laser sintering systems. “Flexible polymer materials significantly expand the options for additive manufacturing because they allow us to realise new, demanding applica- tions in attractive markets,” says Fabian Stoever, Senior Product Manager for polymers at EOS. “In addition, the variety of materials not only enables us to produce individual high-tech functional components, but also to develop much more sophisticated 3D concepts that make use of the entire material range.”


Special effects Effect pigment producer Schlenk Metallic Pigments, filament specialist Herz and master- batch manufacturer Gabriel Chemie have collabo- rated on developing an authentic metallic look in 3D printing filaments. The masterbatch formulation developed by Gabriel-Chemie using ultra-fine pigments from Schlenk creates a silky, homoge- neous surface of the filament. The 3D printed end product is noted for having a deep shine and an authentic metallic look. The best results are achieved with PETG


polymer. Gabriel-Chemie recently expanded its E


product range of coloured masterbatch for 3D printing filaments with PETG, which is noted for its particularly high degree of transpar- ency and low viscosity. As a 3D printing filament, it combines the positive properties of ABS and PLA. The PETG metallic range


P


currently consists of five colours - Ocean Blue Metallic Gloss, Calm Red Metallic Gloss, Gunmetal Black


Metallic Gloss, Brown Metallic Gloss and Fir Tree Metallic Gloss. Further colours are being developed or are available on request. All colours provide brilliance and depth, even at low doses. Lehvoss Group has supplied carbon fibre


reinforced thermoplastics for the Livrea Yacht, a first 3D printed sail boat. The Livrea Yacht is a project of two Italian boat builders, Francesco Belvisi and Daniele Cevola, and is intended to


68 COMPOUNDING WORLD | October 2018


participate in the Mini 650 class Minitransat race, which takes place across the Atlantic Ocean from Europe to South America and is next scheduled for 2019. In parallel to the yacht design, the two entrepreneurs have driven the development of a dedicated direct extrusion 3D printing technology with their company OCORE. Besides improving the printing hardware - robot, extruder and nozzle – they have patented a new material deposition strategy using a fractal-inspired algorithm. Lehvoss Group supported the process develop- ment and engineered and delivered customised 3D printing materials dedicated to this technology and application. These materials – Luvocom 3F – are based on thermoplastic polymers, such as high- performance polyamides and PEEK, and to achieve the required mechanical properties are reinforced with carbon fibres. The materials are modified to improve inter-layer strength and to minimise warping during printing.


FDM developments SABIC has launched three new filaments for fused deposition modelling: Ultem AM1010F filament for general high-temperature applications, including tooling; and Ultem AMHU1010F and Lexan AMHC620F filaments for healthcare applications. The company says that the materials can be used for end-use parts as well as prototypes. Ultem AM1010F filament provides high-heat resistance (a glass transition temperature of 217°C) and high mechanical strength. It can also be used in applica- tions such as short-cycle injection moulding tools, carbon-fibre layup tools and automotive compo- nents. The filament is UL94 V-0 compliant at 1.5mm and 5VA compliant at 3.0mm. Ultem AMHU1010F and Lexan AMHC620F filaments are made with SABIC healthcare-grade resins, which are included in the company’s Healthcare Product Policy and offer traceability. Both offer biocompatibility according to ISO 10993 or USP Class VI standards, and FDA Drug or Device Master File listings. SABIC says healthcare applica-


www.compoundingworld.com


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