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PVDF Filament

Compound Polymers is the first to manufacture a 3D print filament made from Arkema’s Kynar® PVDF. Known as Fluorinar™, this PVDF homopolymer filament is available in 500 g spools with either a 1.75 mm or 2.85 mm diameter with a +/- 0.05 mm tolerance. Now scientists and engineers can design and manufacture parts required in the lab or in production without the time and expense needed to create an injection molded part. This filament is ideal for either rapid prototyping or for small production runs. PVDF parts can be created from Fluorinar™ Kynar® PVDF filament in a matter of hours instead of months.

Fluorinar™ Kynar® filament changes everything.

Large parts can now be printed without loss of print bed adhesion. The final print remains perfectly flat after completion and cooling. Before the existence of 3D printing, one-off parts were typically made by machining from solid stock. Fluorinar™ now gives you possibilities: you can either print the part or print solid stock and create the part by machining. Either way, Fluorinar™ Kynar® PVDF 3D filament gives you the choices you need to complete your job.

Now scientists and engineers can design and manufacture parts required in the lab or in production without the time and expense needed to create an injection molded part. This filament is ideal for either rapid prototyping or for small production runs. PVDF parts can be created from Fluorinar™ Kynar® PVDF filament in a matter of hours instead of months.

Fluorinar™ Kynar® filament advantages

  • Large PVDF 3D Prints: print sizes are only limited by machine print volume
  • First print layer bonds to PVA-coated glass and remains perfectly flat without using brims or rafts
  • Excellent build plate adhesion: no loss of part dimensions due to warping
  • No lifting around sharp corners on the printed part
  • Fully melt compatible with Fluorinar-H™ filament in multi-extrusion printers
  • Rapid prototype development
  • Small quantity part production
  • Cost-effective part manufacturing compared to machining from solid stock
  • CNC machining of printed part for tight tolerance requirements
  • Optimal print settings can be achieved on all consumer-grade printers
  • No off-gassing during printing due to PVDF melt stability
  • Excellent corrosion resistance to most mineral and organic acids, aliphatic and aromatic hydrocarbons, alcohols, halogenated solvents, and oxidizing agents
  • No loss of mechanical strength after long-term UV exposure
  • 100% Kynar® and 100% PVDF
  • Meets ISO-10993-5:2009 cytotoxicity standard for biocompatibility

Frequently Asked Questions

What diameter and color options are available in the Flourinar™ PVDF filaments?

Fluorinar-C™ 1.75mm & 2.85 mm (white)
Fluorinar-B™ 1.75mm & 2.85 mm (black)
Fluorinar-ESD™ 1.75mm & 2.85 mm (black)
Fluorinar-H™ 1.75mm & 2.85 mm (natural)

How much shrinkage can I expect to see when using Flourinar™ PVDF Filaments?

To determine the amount of shrinkage in a printed part we printed examples of the 20 mm XYZ calibration cube. This STL file is available from Thingiverse.
 
Filament: Fluorinar-C™
Layer Height: 0.2 mm
Infill: 30%
X-axis = 19.80 mm (1.00%)
Y-axis = 19.87 mm (0.65%)
Z-axis = 19.65 mm (1.75%)
 
Filament: Fluorinar-B™
Layer Height: 0.2 mm
Infill: 30%
X-axis = 19.82 mm (0.90%)
Y-axis = 19.98 mm (0.10%)
Z-axis = 19.91 mm (0.45%)

What length of filament is on the spool?

Our 1.75 mm Fluorinar™ filaments have approximately 785 feet (239 m) while our 2.85 mm Fluorinar™ filaments have 300 feet (91 meters) on each spool.

How soon will my order ship?

All of our Fluorinar™ filaments are off-the-shelf items that will ship within 24 hours of order placement. If we can’t meet this deadline we will contact you with a revised shipment date.

What print parameters should I use for a successful print?

1. Print on a glass bed heated to 100 C.
2. Use a light layer of Elmer’s disappearing purple glue on the glass for adhesion. Other PVA adhesives have not been as effective.
3. Print with a single layer 10 – 15 mm brim attached to the part.  This is not required for Fluorinar-C™
4. Maximize part surface area in contact with the print bed.
5. Set extrusion temperature 250 – 260 C.
7. Layer height can be 0.1 – 0.2 mm.
8. Print speed should be around 20 – 40 mm/s.
9. If the part is small it will help to print in duplicate as the most recent layer on the first part is allowed to cool while the layer on the second part is printing.
10. Fluorinar-H™ likes to run hot. We never use a fan with this material.  When using Fluorinar-C™ for larger prints, a fan can be used to increase print speed up to 70 mm/s.  Keep an eye on things.  If interlayer bonding does not appear to be working then the fan or print speed can be reduced. When printing 3DBenchy with Fluorinar-C™ we run the fan up to 50% in order to get the rod holder and smoke stack features nice and round.

Additional printing guidance can be found here.

  • Print at an extrusion temperature between 240 and 260 C.
  • Print on a glass bed heated to 100 C.
  • Use a light layer of Elmer’s disappearing purple glue on the glass for adhesion. Other PVA adhesives have not been as effective. This adhesion layer should be applied in one uniform pass with no purple color visible. After printing the PVDF part, the adhesive should be removed with warm water and reapplied.
  • Print with a single layer 10 – 15 mm brim attached to the part. (Brims are typically not required for Fluorinar-C™)
  • Eliminate points of stress concentration in the part design such as sharp corners and abrupt edges. Consider using a gradual fillet transition between the part surface in contact with the print bed and the vertical walls.  (Stress concentration does not appear to be a problem for Fluorinar-C™)
  • Layer height can be 0.1 – 0.4 mm but should not exceed the diameter of the extruder.
  • Fluorinar-H™ print speed should be around 40 mm/s. Set a slower print speed for the brim and first layer. When printing Fluorinar-C™ above 50 mm/s start adding fan cooling to maximum of 40%.
  • Keep the cooling fans turned off. Fluorinar-H™ filaments likes to run hot.
  • If the part is small it can help to print multiple copies which effectively increases the layer perimeter. The most recent layer on the first part is allowed to cool while the same layer on the second part is printing.
  • Increase the initial layer line width to 105%. This presses the first layer into the print bed and improves adhesion.
  • There may be some additional settings unique to your slicing software. For instance, the Cura slicer modified for Ultimaker has the infill patterns cubic, quarter cubic and octet which vary the location of the filament pattern on each layer. This software also has a gradual infill steps parameter which allows the infill to be at a small percentage throughout the print and then increase to a larger percentage below any top surfaces. This helps to improve the appearance of the visible outer surface. Both of these parameters reduce filam

Fluorinar-C™ 3D Filament Technical Data Sheet

Fluorinar-C™ 3D Filament Safety Data Sheet

Fluorinar™ Chemical Resistance Chart

Successful Prints with Fluorinar™ PVDF Filaments

Fluorinar-H™ 3D Filament Technical Data Sheet

Fluorinar-H™ 3D Filament Safety Data Sheet

PVDF Filament for Industrial 3D Printing

KYNAR® Chemical Resistance Chart

Fluorinar™ Filament Sample

Fill in the form below and we’ll send you a 5-meter sample of either 1.75 mm or 2.85 mm filament

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