TECHNOLOGY | 3D PRINT COMPOUNDS
Emery Oleochemicals has developed binder systems for metal and ceramic 3D print part production
polymers. These materials are designed for use in applications requiring high temperature resistance and good mechanical properties. Victrex says the materials also offer good resistance to wear, fatigue and chemicals.
IMAGE: EMERY OLEOCHEMICALS
Additive manufacturing – more than just plastics
3D printing is not all about plastics. Emery Oleochemicals’ Green Polymer Additives business unit has developed a binder system for 3D printing of sinterable metals and ceramics using extruded filaments and FDM machinery. The company’s technical group developed its first binder system for metal injection molding in the early 1990s. Since then, applica- tions have developed from powder injection molding (PIM) and powder extrusion to the current stage of additive manufacturing using filaments made from sinterable feedstock. These filaments typically contain more than 80 wt% of metal or ceramic powder. According to the company, the metal or ceramic feedstock filaments can be processed using a standard FDM printer with just a modified print head. After filament 3D printing, parts go through several post-processing steps involving solvent removal and thermal treatment steps to create finished full metal or ceramic components. According to Emery, its binder and feedstock systems provide
parts with improved part strength and lower shrinkage. The company says the same binder system can be used for both 3D print prototyping and volume powder injection moulding. �
https://greenpolymeradditives.emeryoleo.com/3dprinting
Sustainable ideas The latest additions to the Covestro 3D print materials line up are focused on sustainability and include pellets and filaments containing recycled content, including some post-industrial waste from the company’s manufacturing facilities. One of these new additions is a polycarbonate blend suitable for applications that require high tempera- ture resistance. Covestro is also developing partially bio-based
products for 3D printing in which almost 50% of the carbon content is derived from biomass. One such material is a TPU that has already been used to print a shoe insole using selective laser sintering (SLS). Other building blocks for sustainable TPU materials include the Cardyon polyols, which are partly-derived from CO2. Lubrizol Corporation has introduced three Estane 3D TPU grades for fused filament fabrication (FFF) 3D printing applications for users of Ultimaker equipment. The new grades include Estane 3D TPU F94A-055 or HH PL, Estane 3DP TPU 98A and Estane 3DP TPU F70D. Ultimaker offers a material library called the Marketplace in Ultimaker Cura, which allows partner raw material suppliers to upload profiles for grades that are compatible with Ultimaker printers. Lubrizol’s three latest Estane 3D TPU grades meet requirements for printing indus- trial jigs and fixtures, prototypes, end-use parts, and flexible parts such as orthopaedic insoles. Three new Kimya ABS compounds have been qualified for the Method X 3D printer from Maker- Bot, which is a subsidiary of Stratasys. The new materials include Kimya ABS Kevlar for parts requiring high strength, abrasion resistance, and
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