The new PAEK engineering polymer is designed for additive manufacturing
HC Plastics News: Polyetheretherketone (PEEK) polymer manufacturer UK Victrex is developing a new additive manufacturing material (AM). The first is a high-strength polyaryl ketone (PAEK) laser-sintered (LS) material that reduces the refresh rate and improves the recycling of unsintered powder. The second type is a filament which has a better Z-direction tensile strength than the existing PAEK material and a better printability in terms of filament fusion (FF). A detailed report of the technology will be presented at the Biennial Additive Manufacturing Conference of the University of Exeter Additive Manufacturing Center (CALM) in September 2018.
The demonstration frame is produced by additive manufacturing of a special PAEK resin.
Jakob Sigurdsson, CEO of Victrex, commented: "The application of these new PAEK materials in the field of additive manufacturing marks a decisive step, even for aerospace, medical and electronics. Change. This breakthrough is inseparable from Victrex's continued intensive R&D and collaboration with other organizations that have achieved many innovations in additive manufacturing. Through these partnerships, we have seen additives. In the demonstration part of the manufacturing process, we add confidence to create a truly innovative component by combining design with high performance materials."
This technology can take advantage of additive manufacturing to reduce costs, reduce time-to-market, and produce complex parts that cannot be produced by traditional manufacturing. Although the existing PAEK materials on the market are also used in additive manufacturing, most of them are designed for traditional manufacturing methods such as injection molding. Therefore some of the properties of these materials are not particularly suitable for additive manufacturing. The PAEK material originally used for laser sintering is extremely low in recycling and requires a new powder refreshing print bed, while the PEEK fiber for wire fusion has poor adhesion between layers, which also leads to Z-direction tensile strength. reduce.
The new polymer developed by Victrex exhibits a satisfactory low refresh rate (increased recycling of unsintered powder) and exhibits similar performance in laser sintering with good mechanical properties and printability. .
John Grasmeder, Victrex's chief scientist, explained: "The breakthrough in technology has paved the way for the use of PAEK materials in additive manufacturing. The newly developed polymer allows the recycling of laser sintered powder to proceed smoothly. Manufacturing components using recycled powder does not cause large property damage. We believe that all unsintered powders can be reused after running. This will result in a significant reduction in material costs, up to 40 in the current situation. % of the polymer is wasted and cannot be recycled."
Victrex is leading a consortium of companies and institutions, and has received funding from the UK's innovation agencies. In 2016, a number of pioneering research and developments were carried out to advance additive manufacturing technologies, especially for low-temperature polymers. Composite materials are used in the field of additive manufacturing in the aerospace industry. Other members of the consortium include Airbus Group, EOS, CALM, E3D Online, HiETA Technology, Southwest Metalworking Center and 3T-RPD.
The new Victrex PAEK filament and powder belt was developed by other members of the alliance. EOS recently unveiled a new automated equipment manufacturing platform for laser sintering on an industrial scale (EOS P 500) with the ability to print high performance polymers at high temperatures. The materials selected by the Alliance will be evaluated by the EOS R&D Center for processing on the EOS system and for the EOSP500 platform. Victrex is planning to continue commercial testing of a new PAEK fiber product with partner E3D. E3D recently introduced a new water-cooled filament extruder optimized for this new PAEK filament.
Victrex has more than 35 years of expertise in developing or applying new polymers, including the development of new polymers and new components. This high-strength, lightweight PEEK polymer has excellent wear resistance, high temperature resistance, fatigue resistance and corrosion resistance, and supports a variety of needs, making the design more free and less costly. 
Editor in charge: Yao Chunlin
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