Kimya PEKK Carbon

Polyetherketoneketone (PEKK) Carbon is a carbon fiber-filled thermoplastic commonly used for its ease of processing while possessing the properties of other PAEK high-performance polymers. Similar to Kimya PEKK-A, PEKK Carbon is a carbon fiber-filled thermoplastic polymer allowing for an increase in ease of processing compared to PEI and PEEK. PEKK Carbon offers temperature resistance, is flame retardant, and complies with REACH standard parts that are rigid and heat resistant.

Designed for technical applications, PEKK Carbon is ideal for components exposed to acids and hydrocarbons such as components in engine housings.

Printing Difficulty: Challenging/Expert

PEKK Carbon can be purchased from AON3D directly by contacting help@aon3d.com.

Technical Specifications

Material Safety Data Sheet

Technical Data Sheet

For more information on material safety and specific material properties, see the manufacturer’s website.

Physical Properties

Property Value Test Method
Diameter 1.75 mm, +/- 0.1 mm INS-6712
Density 1.27 g/cm³ ISO 1183-1
Glass Transition Temperature 160°C ISO 11357-1
Moisture Rate <1% INS-6711

*All data as reported by Kimya Technical Data Sheet as downloaded on 3/25/2021. Print conditions listed on the Technical Data Sheet.


Usage Notes

General Process Settings

For best results, process settings should be adjusted based on model geometry. If you require process development support, our Applications Engineering team can help! Send us a message at help@aon3d.com to consult with one of our Additive Manufacturing Specialists.

Optimal extrusions are matt dark grey with an overall gritty surface texture. PEKK Carbon requires the use of at least a 0.40mm and wear-resistant nozzles such as hardened steel, tungsten-carbide coated steel, or tungsten carbide due to its abrasive nature. Use slower printing speeds between 20-40 mm/s for optimal mechanical properties and print quality. Higher extrusion temperatures and moderate printing speeds help the polymer flow more easily, decreasing the accumulation of stress between each layer; interlayer welding strength is increased.

Do not be afraid of using high extrusion temperatures in fear of part warping and/or deformation from uneven crystallization. Higher extrusion temperatures may enhance interlayer welding strength with minimal effects on crystallization rate.

Ooze Control parameters may be focused on adjusting the Coasting Distance and/or Wipe Distance instead of the Retraction Distance due to the carbon reinforcement. If undesired seams and stringing are produced, larger Coasting Distance and/or Wipe Distance may reduce blobs and stringing defects near seams.

Setting AON-M2
Extrusion Temperature 340-390ºC
Bed Temperature 150ºC
Chamber Temperature 120ºC
Print Speed 20-40 mm/s
Nozzle Size 0.40-1.00 mm
Build Platform High-Temperature Build Plate

The AON-M2 is unable to reach chamber temperatures above 120ºC. This constraint may limit your ability to optimally print PEKK Carbon. The AON-M2 2020 and AON M2+ can reach chamber temperatures up to 135ºC, contact AON3D directly at help@aon3d.com for more information.

Setting AON-M2 2020
Extrusion Temperature 340-390ºC
Bed Temperature 150ºC
Chamber Temperature 120ºC
Print Speed 20-40 mm/s
Nozzle Size 0.40-1.00 mm
Build Platform High-Temperature Build Plate
Setting AON M2+
Extrusion Temperature 340-390ºC
Bed Temperature 165ºC
Chamber Temperature 120ºC
Print Speed 20-40 mm/s
Nozzle Size 0.40-1.00 mm
Build Platform CF-PEEK composite plate

Sample Slicer Profile

Single Extruder, 0.40 mm nozzle

Single Extruder, 0.60 mm nozzle

Moisture Control

PEKK Carbon is extremely susceptible to moisture uptake. Bubbles, popping noises, excessive oozing, and stringing may occur if it has been hydrated.

The filament can be dried in a convection oven at 120ºC for 4-6 hours before processing and fed from a low humidity environment. When not in use, store in a sealed package or container with silica desiccant to inhibit moisture absorption. Properly dry the material before adjusting process parameters to obtain reliable and consistent results. Our drybox setup prevents filament moisture uptake to keep the material printing process free of moisture, contact help@aon3d.com for more information.

For more information, see the Filament Drying and Moisture Control guide.

Build Platform Adhesion

For instructions on how to inspect the AON3D build plates, refer to the Inspect and Clean Build Plates procedure.

Build Platform Selection

PEKK Carbon prints best on the High-Temperature Build Plate.

First Layer Adhesion

Part adhesion is very strong, often causing part and/or build platform damage during part removal. If needed, a sacrificial temperature gradient raft can facilitate part removal. For more information about reducing damage to the part and/or build platform, see the Kimya PEKK-A material guide.

First Layer Height and First Layer Width with a value of 100-120% for both is generally sufficient for PEKK Carbon.

First Layer Extrusion Temperature First Layer Speed
340-350ºC 15-25 mm/s

For more information, see the Build Platform Adhesion guide.

Build Platform Selection

PEKK Carbon prints best on the High-Temperature Build Plate.

First Layer Adhesion

Part adhesion is very strong, often causing part and/or build platform damage during part removal. If needed, a sacrificial temperature gradient raft can facilitate part removal. For more information about reducing damage to the part and/or build platform, see the Kimya PEKK-A material guide.

First Layer Height and First Layer Width with a value of 100-120% for both is generally sufficient for PEKK Carbon.

First Layer Extrusion Temperature First Layer Speed
340-350ºC 15-25 mm/s

For more information, see the Build Platform Adhesion guide.

CF-PEEK Composite Plate

PEKK-A prints best on the CF-PEEK composite plate. We recommend the CF-PEEK composite plate if re-usability is required. The CF-PEEK composite plate offers the best re-use capability and maintains its integrity after several uses.

Higher extrusion temperatures are needed to achieve adequate first layer adhesion on the CF-PEEK composite plate. If you are going to increase the first layer extrusion temperature for increased adhesion, ensure that the temperature gradient spans over many layers. You must compensate for toolhead shrinkage by gradually adjusting the extrusion temperature in the part to optimal extrusion temperatures. For more information about sacrificial temperature gradient rafts, see the Kimya PEKK-A material guide.

First Layer Adhesion

First layer adhesion can be increased by increasing the Extrusion Temperature or reducing First Layer Speed. First Layer Height and First Layer Width with a value of 120-150% for both is generally sufficient for PEKK Carbon.

First Layer Extrusion Temperature First Layer Speed
390-410ºC 15-25 mm/s

For more information, see the Build Platform Adhesion guide.

Dual Extrusion and Support

There is currently no compatible support material for PEKK Carbon; prints require self-support. For easy support removal and good support top/bottom contact layer adhesion, use only 1 Upper/Lower Vertical Separation Layer. More than 1 separation layer may risk the supported region of the part to detach and warp.

For more information, see the Using Supports and Support Materials guide.

Post-Processing

Allow all machine components to reach room temperature before proceeding further. Failure to allow components to cool down will result in thermal injury (burns) to personnel.

High-Temperature Build Plate

PEKK Carbon prints may not separate easily from the High-Temperature Build Plate given a sudden impact. Damage to the part and/or the build platform may occur during part removal. The use of a spatula can facilitate part removal if needed.


Shrinkage, deformation, and warpage due to thermal shock may occur from removing the part before letting the machine cool. Instructions for removing the part from the build platform and additional support material can be found on the Build Platform Adhesion and Using Supports and Support Materials guides.

High-Temperature Build Plate

PEKK Carbon prints may not separate easily from the High-Temperature Build Plate given a sudden impact. Damage to the part and/or the build platform may occur during part removal. The use of a spatula can facilitate part removal if needed.


Shrinkage, deformation, and warpage due to thermal shock may occur from removing the part before letting the machine cool. Instructions for removing the part from the build platform and additional support material can be found on the Build Platform Adhesion and Using Supports and Support Materials guides.

CF-PEEK Composite Plate

PEKK Carbon prints may separate easily from the CF-PEEK composite plate by hand at room temperature. The use of a spatula can facilitate part removal if needed.


Shrinkage, deformation, and warpage due to thermal shock may occur from removing the part before letting the machine cool. Instructions for removing the part from the build platform and additional support material can be found on the Build Platform Adhesion and Using Supports and Support Materials guides.


Troubleshooting

Stringing

High temperatures are needed to optimally print PEKK Carbon. This makes stringing/oozing a common issue due to these high processing temperatures.

If stringing/oozing occurs even when properly dried and fed from a low humidity environment, slightly increase Coasting Distance and/or Wipe Distance instead of the Retraction Distance.

Last modified: January 24, 2022