ESD-Safe PEKK - 500g

3DXSTAT™ ESD-PEKK 3D Printing Filament

$195.00

3DXSTAT™ ESD-Safe PEKK 3D Filament

PEKK (PolyEtherKetoneKetone) is one of the highest-performance polymers in world.  Developed in partnership with Arkema - a leading supplier of ultra-performance materials. 

Aerospace-Grade Performance.  This compound was created for extreme the most demanding applications where tightly controlled electrical properties, static dissipation, thermal, mechanical, and chemical resistance properties are required.  

Print 3DXSTAT™ ESD-PEKK parts with Gearbox™ HT2 High-Temp 3D Printer.  Check it out HERE.

kepstan-pekk.jpg

3DXSTAT™ ESD-PEKK has a wider processing window than PEEK and typically prints with extruder temps between 360-390°C, whereas CF-PEEK often requires extruder temps above 400°C.  3DXSTAT™ ESD-PEKK has a lower rate and degree of crystallinity than PEEK, which aids in its ease of printing.  However, once printed and annealed, PEKK parts exhibit superior performance vs. PEEK.  Easier to print + superior performance!

Print PEKK on open-source printer!  You do not need to purchase a Stratasys® Fortus® printer to print PEKK.  This polymer is one of the easier to print ultra-polymers and is suitable for printing using many of the high-performance open-source 3D printers now on the market.  

3DXSTAT™ ESD-PEKK product attributes include

  • Substantially easier to print than PEEK
  • Continuous Use Temperature (CUT) of 260°C, and higher for short duration
  • Glass Transition Temp (Tg) of 162°C (20°C higher than PEEK)
  • Melt Temp (Tm) of 335°C  (allows for lower print temps than PEEK)
  • 10^6 to 10^7 ohm surface resistivity on 3DP sample using concentric ring test method
  • Consistent surface resistivity and low particulate contamination
  • Inherent flame resistance
  • Long-term hydrolytic stability 
  • Excellent dimensional stability (low creep sensitivity and low, uniform coefficient of thermal expansion) and highly reproducible part-to-part dimensions
  • Exceptional strength and modulus, even at elevated temperatures
  • Good resistance to a broad range of chemicals, such as automotive fluids, fully halogenated hydrocarbons, alcohols, and aqueous solutions
  • Stable dielectric constant and dissipation factor over a wide range of temperatures and frequencies

Typical applications include:

  • Semi-con / Electronics:  HDD Components, Wafer Handling, Jigs, Fixtures, Casings & Connectors 
  • Industrial:  Conveying, Metering, and Sensing applications

Filament Specifications:

  • Diameter:  1.75mm (+/- 0.05mm)
  • Larger reels and diameters available upon request

Surface conductivity as a function of extruder temperature:

esd-pekk-resistance.pngThe surface resistance of the printed ESD-safe part will vary depending on the printer's extruder temperature.  For example, if your testing indicates the part is too insulative, then increasing the extruder temperature will result in improved conductivity.  Therefore, the surface resistance can be 'dialed-in' by adjusting the extruder temperature up or down depending on the reading you receive on your part.

Recommended Print Conditions:

  • Extruder Temp:  355 - 385°C 
  • Bed Temp: 120 - 140°C
  • Bed Prep: Ultem™ Tape is the ideal build surface, glue stick on clean glass is suitable
  • Enclosure temp (if your printer is equipped):  70 - 140°C

 

Annealing (post crystalizing) 3D Printed PEKK Parts:  Parts printed with PEKK may be annealed after printing to ramp-up the crystallinity in the resin.  This will maximize mechanical, thermal, and chemical resistance properties.  Printed parts will be transparent golden in color and then turn an opaque tan color once annealed (see picture above).  If you do not post-crystallize the PEKK parts, then the maximum use temperature is 150°C.  If you do post-crystallize, then the maximum use temperature is 260°C.  So you can choose which route to go depending on the needs of your part.  

 

  • Step 1:  Place part in an oven and raise the temperature to 160c, allow to remain at that temperature for 30 minutes.  
  • Step 2:  Raise the oven temperature to 200c and allow the part to remain their until it turns a uniform tan color.  Timing will depend on the temperature uniformity and circulation of the air inside the oven.  Allow to cool prior to handling part.