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MATERIALS | 3D PRINT COMPOUNDS


Carbodeon and Tiamet 3D have developed compounds containing nanodiamond reinforcement and claim mechanical and speed improvements


printed components that perform as well as or better than comparable injection moulded compo- nents, according to the developers, but with large cost reductions and production speed improve- ments. As well as improving thermal management, conductivity and tensile strength of the base polymer, nanodiamonds can increase the glass transition temperature making the resulting compounds more suitable for challenging environ- ments. The first Carbodeon/Tiamet 3D filaments will be PLA based, with further development focused on higher-performance thermoplastics.


settings are really demonstrating the time and cost savings in such distributed manufacturing that is growing so rapidly.” Sawyer says that other future developments are


likely to address more flexible applications in printing, which may end up as a reactively com- pounded product or a compound. Composites that could be used in large tooling used in making thermoset or glass reinforced moulded articles is another area of interest.


Specialty filaments Solvay has launched three speciality polymer filaments for 3D printed parts. Based on its Ket- aSpire PEEK and Radel PPSU polymers, the three filaments are to become part of a broader portfolio of speciality polymer filaments and powders designed specifically for high-end additive manufacturing (AM) applications. The range includes a neat PEEK product and a 10% carbon fibre-reinforced grade, both of which are said to be formulated to allow good fusion of printed layers to ensure high part density and part strength (including the challenging z-axis). The third filament is based on PPSU and offers high transparency, good elongation and toughness. Solvay says that it is also developing an AM-ready powder based on its NovaSpire polyetherketoneketone (PEKK) polymer, which will target AM applications in aerospace and healthcare. Finnish nanodiamond manufacturer Carbodeon and Dutch 3D printing specialist Tiamet 3D have developed nanodiamond-enhanced filaments for 3D printing. The companies claim a 100% increase in tensile strength, improved printability and better thermal properties. Printing is also said to run more quickly and more reliably. Nanodiamonds offer the potential to make 3D


66 COMPOUNDING WORLD | October 2018


Carbon reinforcement DSM has launched a new carbon fibre reinforced PA6/66 filament - Novamid ID1030 CF10 - for 3D printing. Despite the low carbon fibre loading of 10% - much lower than other carbon filled materi- als – the company says that it produces functional prototyping and industrial parts with properties close to what is usually achievable only by injection moulding. Processing is said to match the easy and fast printing of unreinforced plastics. “FFF [fused filament fabrication ] technology is


growing rapidly, for use in both prototyping and industrial applications,” says Hugo da Silva, Vice-President of Additive Manufacturing at DSM. “With high-performance materials like our new carbon fibre filament, manufacturers can take it into many more applications like functional prototyping as well as durable and structural industrial parts for harsh environments.”


Novamid ID1030 CF10 3D is designed for printing structural parts which are stronger, stiffer and tougher with higher tensile strength and modulus, high dimensional stability and free of warpage. The good mechanical properties and smooth appearance make it ideal for applications that require robust performance at elevated temperatures such as automotive under-the-hood, protective and supporting sports gear, manufactur- ing jigs and fixtures, medical braces and prosthetics. The material can be printed on standard desktop FFF machines with a hardened nozzle. Tests have shown that users can run their printers at the same speeds as with unreinforced plastics, while achiev- ing considerably better strength and toughness. DSM says Novamid ID 1030 CF10 has been tested on several open FFF platforms, including on GermanRepRap and the new Ultimaker S5. Evonik has developed a flexible plastic material based on PEBA (polyether block amide) for use in 3D printing. The new high-performance powder has high elasticity and strength and is suitable for a variety of powder-based 3D printing technologies.


www.compoundingworld.com


PHOTO: CARBODEON


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