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  • PEKK with Carbon Fiber

    New product

    22 Items

    449,00 €tax excl.
    543,29 €tax incl.

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    PEKK CF is an advanced material that contains carbon fiber used in engineering to make mechanically resistant parts, resistant to chemical elements and fire retardants.

    The PEKK CF (PolyEtherKetoneKetone) (JNM 2712) is considered an advanced engineering polymer, which belongs to the PAEK family, mixed with carbon fiber. Carbon Fiber is a pseudo-amorphous material that gives PEKK a lower melting point, slower crystallization and maintains a high crystallization temperature (Tg=160°C). This union also enhances the structural stability, improving the mechanical and printing properties. That is why the PEKK CF has earned a place among one of the two most powerful and easy-to-use materials within 3D FDM / FFF printing. In addition, this material competes at a general level with the most widely used thermoplastics in the engineering industry (polysulfones, polyphenylene sulphides and polyketones).

    Relying on the vast experience and many years of research, the great French manufacturer Nanovia has obtained the PEKK CF JNM 2712. The JMN 2712 behaves in a stable manner in all areas that allows its use in a 3D printer FDM. Next, the molecular structure of JNM 2712 is observed.

    JNM 2712

    Image 1: PEKK CF JNM 2712. Source: Nanovia

     

    The PEKK CF filament presents all the qualities that an advanced material requires. This material offers a high operating temperature and a constant maximum working temperature with a pressure of 1.8 MPa of more than 139ºC. The main advantage, with respect to other materials (NylonStrong), is that at these temperatures the mechanical properties hardly change. This is because its great dimensional stability, improved thanks to carbon fiber, maintains the structural shape even when raising the temperature, something unthinkable with most existing materials in 3D printing FDM / FFF. These qualities are used to make short cycle injection molding tools, carbon fiber lamination tools and other types of molds that are subject to high pressure and temperature values (Autoclave). Within this type of high strength molds are those used for the vulcanization process of plastics, such as rubber. Thanks to PEEK CF molds can be made faster, easier and cheaper than current steel molds.

    The main advantage of this material with respect to others of the same family is that the chemical resistance. The values of resistance to chemical elements are superior even to those of PEI and PEI CF. PEKK CF is resistant to a large list of fluids: halogen hydrocarbons (benzene), automotive fluids (coolant), alcohol and aqueous solutions (sea water). This quality, together with its low density (1.27 g / cm3) and fireproof material, makes PEKK CF a very common material to make final parts of engine parts in the field of aeronautics and the automotive industry through which liquids pass, oils and gases.

    Application of engineering

    Image 1: Application of engineering. Source: Nanovia

     

    Something very important when it comes to manufacturing parts for engineering is that it doesn't interfere or produce derivations of electric currents. The PEKKwith carbon fiber has a high dielectric stability (resistance to transforming an electrically insulating material into conductive) and can manufacture insulating parts for electronic circuits or housings for electrical outlets. In particular, the application of this material in electronic circuits is ideal to ensure the operation, since the PEKK CF is a material with a large capacity of heat dissipation and frequency.

    In the section of mechanical properties, the PEKK CF stands out when gathering high values of resistance in all fields. The Young Module (Traction Module) of the PEKK CF (2900 MPa) is superior to that of the technical materials of 3D printing by more than 30%; Nylon-Carbon Fibre CF15 (500 MPa), PC-Max (2048 MPa), Nylon PolyMide COPA (2223 MPa). The Flex Module of the PEKK CF is 3000 MPa, again surpassing all conventional and technical 3D printing materials;; Nylon PolyMide COPA (1667 MPa), ABS Premium (2000 MPa), PC-Max (2044 MPa). If you need a material with higher mechanical strength values, it's recommended to use PEI, PEI CF, GF30-PP or GF30-PA6.

    To use the PEKK CFyou need a great experience in the sector of 3D printing and a 3D printer qualified for it, since it requires an extrusion temperature of 395ºC, a base temperature of 165ºC and a chamber temperature of 80ºC, that is why it is recommended to use industrial 3D printers such as 3NTR A2 or 3NTR A4 that meet all the requirements. To ensure a good adhesion to the printing base, it is recommended to use a PEI sheet to avoid the warping effect.

    Post-processed:

    During the printing of the desired parts with PEKK CF internal stresses are generated, as in any type of plastic, which can be transformed into unwanted breaks or deformations. Eliminating these tensions is very simple and you only need a hot air oven and follow the following 5 steps:

    1º- Place the pieces in the oven at room temperature (20ºC).

    2º- Heat the oven at 150ºC for 1 hour.

    3º- Once spent 1 hour, raise the temperature to 200ºC and let one more hour pass.

    4º- Lower the temperature again at 150°C for 30 minutes.

    5º- Once the 30 minutes have passed, the oven is turned off and the pieces inside the oven are allowed to cool to room temperature.

    This process must be carried out by qualified personnel.

    • Plastic Type: PEKK CF
    • Manufacturing location: Europe (France) for Nanovia
    • Diameter: 1.75mm or 2,85mm
    • Tolerance diameter (maximum): ± 0.05mm
    • Printing recommended temperature: 395ºC
    • Recommended print speed: 20-40 mm/s
    • Print bed base temperature recomended: 165°C
    • Chamber temperature recomended: 80ºC
    • Recommended nozzle diameter: >0.5mm
    • Deflection Temperature Under Load: 139ºC
    • Glass transition temperature (Tg): 160ºC
    • Format: Spool of 500gr
    • Density (ASTM D792): 1.27 g/cm3
    • Elongation at break (ASTM D638): >80%
    • Tensile Modulus (ASTM D638): 3850 MPa
    • Flexural Modulus (ASTM D790): 4747 MPa
    • IZOD impact (ASTM D256): 5.5 KJ/m2
    • Spool diameter: 200mm
    • Spool width: 45mm
    • Inside hole diameter: 52mm
    • Shipping Weight: 1 Kg
    • HS Code: 3916.9

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