TECHNOLOGY | 3D PRINT COMPOUNDS
Right: This fibre reinforced footbridge prototype was produced using DSM materials for Royal Haskoning DHV
“The relationship between the 3D printing technology and the materials that are used in the process are key,” says Maarten Logtenberg, Chief Executive Officer of CEAD. “Through this collabora- tion with DSM and their understanding of the materials, we are able to fully leverage the technol- ogy to its full potential.”
Below: Natureworks has partnered with 3D print equipment maker Titan Robotics
Building bridges A recent example of DSM and CEAD collaboration is a lightweight 3D printed FRP pedestrian bridge prototype for international engineering consultancy Royal HaskoningDHV. It consists of a glass filled thermoplastic PET (Arnite) combined with continu- ous glass fibres during the 3D printing process. “FRP bridges are already well known for having a longer lifetime expectancy with lower life cycle costs compared to steel bridges,” says Maurice Kardas, Business Development Manager at Royal HaskoningDHV. “What is new here is the use of a new 3D printing technology, enabling us to print large scale continuous fibre reinforced thermoplas- tic parts. Using this new composite thermoplastic material, we will be ushering in a new era for sustainability and push the boundaries of bridge functionality even further. By including sensors in the design, we are able to build a digital twin of the bridge. These sensors can predict and optimise maintenance, ensure safety and extend the life span of our bridges.” DSM also recently entered a partnership with Origin, a US-based open additive manufacturing company. It has already produced a material optimised for use with Origin’s printer – Somos PerFORM HW – and says it has applications in aerodynamics and rapid tooling. Other new 3D print materials from the company include Soft ToughRubber (STR), developed by Adaptive 3D Technologies and commercialised by DSM, and a flame-retardant Novamid AM1030 FR
filament. STR is a photopolymer mainly aimed at applications in footwear, textile and automotive due to its combination of softness and toughness. The new Novamid filament is said to be a sustainable solution for applications requiring flame retardant materials to meet regulatory requirements. DSM has also developed a new PBT powder, which it claims is the first to be made commercially available for selective lase sintering (SLS) printing processes.
Medical application PLA bioplastic producer NatureWorks has also established 3D print development partnerships with a number of companies. Among these is Adaptiiv Medical Technologies, which offers a 3D printing software solution for use in photon, electron, and surface brachytherapy radiation treatments. Claimed to be the first FDA 510(k)- cleared 3D printing software solution for use in radiation oncology, the company has verified and validated Ingeo-based filaments. Natureworks is also working with Titan Robot-
ics, a leader in production-ready additive manufac- turing machines and technology with expertise in both pellet extrusion and high flow filament extrusion 3D printing, and MatterHackers, which is one of the world’s largest 3D printing retailers. Matter Hackers was one of the beta-testers for
Natureworks’ Ingeo 3D450 breakaway support grade. This is designed for use in dual extrusion 3D printers with the company’s Ingeo 3D850 and 3D870 grades and has been developed to meet the needs of the professional printing market. The company says that at printing speeds up to 100 mm/s, Ingeo 3D450 prints and cools without warping even across large sections of support structure. According to Natureworks, the Ingeo 3D450
breakaway formulation can reduce or eliminate speed and buildability issues sometimes encoun- tered with soluble support materials such as polyvinyl alcohol (PVA) or high-impact polystyrene
18 COMPOUNDING WORLD | October 2019
www.compoundingworld.com
PHOTO: TITAN ROBOTICS
PHOTO: DSM
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