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223,10 €

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Polyimide filament for printing flame retardant parts with great mechanical and thermal resistance.

The PI Z2 filament is printable polyimide created by 3D4Makers in collaboration with Zymergen. The PI Z2 filament demonstrates significant advantages for printing parts that require high tensile strength, higher yield, and high mechanical strength (including Z strength) for performance in every direction.

Part 3D printed with the natural PI Z2 filament

Image 1: Part 3D printed with the natural PI Z2 filament. Source: 3D4Makers.

Polyimide is a very high-strength polymer from the group of high-performance plastics, and it is frequently used in very demanding applications, characterized by inherent flame retardance, excellent insulating properties and excellent thermal stability.

As a matter of fact, the PI Z2 filament meets the requirements of the EN 45545 regulation for fire behaviour of materials in trains. Within that norm, the PI Z2 filament complies with the most exigent risk level HL3, requisites R22 and R23. This compliance makes the PI Z2 filament suitable for railway vehicles applications.

Part 3D printed with the black PI Z2 filament

Image 2: Part 3D printed with the black PI Z2 filament. Source: 3D4Makers.

The PI Z2 filament is also reliable and easy to print with on many FDM 3D printers, with low warpage and good bed adhesion. This feature means that higher outputs can be achieved with very few reject parts. Furthermore, parts 3D printed with PI Z2 do not need to be annealed after printing to perform well, which significantly shortens processing time and agilizes the workflow with this material.

Impact strength (KJ/m2) 5.3
Elongation at break (%) 4.8
Tensile strength (MPa) 83
Tensile modulus (MPa) 2730

Once opened, the PI Z2 filament should be stored properly to prevent it from absorbing moisture from the air. The best way to store filaments in a tightly sealed bag with desiccant, in a vacuum sealed container or in an intelligent filament container. It is recommended to dry the filament at 120°C for 4 hours if it abords too much humidity.

The manufacturer recommends printing PI Z2 filament at 390-410 ºC on a bed heated to 120-160 ºC at a speed of 15-150 mm/s. PI Z2 filament requires a heated chamber (80-160°C) and is best used with a glass/carbon plate and a ruby nozzle or a hardened nozzle of 0.4 mm (or larger).  In case of adhesion problems, the manufacturer recommends applying a layer of high temperature adhesives such as Magigoo HT or Nano Polymer Adhesive.

It is highly recommended to wear standard safety equipment during the printing and post-processing of parts 3D printed with the PI Z2 filament - safety goggles, gloves, breathing equipment and protective garments, according to needs.

General information
Manufacturer 3D4Makers
Material Polyimide (PI)
Format Spool of 200 g
Spool of 500 g
Spool of 750 g
Density 1.51 g/cm3
Filament diameter 1.75 or 2.85 mm
Diameter tolerance ±0.05 mm
Filament length ± 55.1 m (Ø 1.75 mm-0.2Kg)
± 20.8 m (Ø 2.85 mm-0.2Kg)
± 137.7 m (Ø 1.75 mm-0.5Kg)
± 51.9 m (Ø 2.85 mm-0.5Kg)
± 206.5 m (Ø 1.75 mm-0.75Kg)
± 77.9 m (Ø 2.85 mm-0.75Kg)
Colour Natural
RAL/Pantone  -
Printing properties
Printing temperature 390-410 ºC
Base/bed temperature 120-160 ºC
Chamber temperature 80-160 ºC
Layer fan -
Print speed 15-150 mm/s
Nozzle diameter ≥ 0.4 mm
Mechanical properties
Izod impact resistance (ISO 180) XY (notched): 5.3 kJ/m2
XZ (notched): 5.3 kJ/m2
ZX (notched): 4.3 kJ/m2

XY (unnotched): 29 kJ/m2
XZ (unnotched): 28 kJ/m2
ZX (unnotched): 26 kJ/m2
Charpy impact resistance  -
Elongation at break (ISO 527) XY: 4.8 %
XZ: 4.8 %
ZX: 3.5 %
Tensile strength (ISO 527) XY: 83 MPa
XZ: 89 MPa
ZX: 68 MPa
Tensile modulus (ISO 527) XY: 2730 MPa
XZ: 2890 MPa
ZX: 2560 MPa
Bending strength  -
Flexural modulus -
Surface hardness -
Thermal properties
Heat deflection temperature (ISO 75-1/-2) (@ 0.45 MPa) 175 ºC
(@ 1.8 MPa) 167 ºC
Glass transition temperature 195 ºC
Softening temperature  -
Melting temperature -
Decomposition temperature 460 ºC
Additional information
HS Code 3916.9
Spool diameter (outside) -
Spool diameter (inner bore) -
Spool width -

* The typical values detailed in this table should be considered as a reference. Actual values may vary depending on the 3D printer model used, part design and printing conditions. We recommend confirming the final results and properties with your own tests. For further information please refer to the product data sheet.


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