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TPU Carbon fibre

Ref.: SMF-TPU-CF-175-500

33.84 €

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Approximate delivery date: Thursday 2 January

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TPU filament with carbon fibre is a material developed by Smart Materials, a well-known Spanish company that manufactures filaments for 3D printing. Its product range includes both conventional and industrial materials.

TPU filament with carbon fibre is a thermoplastic elastomer reinforced with carbon fibres. Thermoplastic Polyurethane is obtained by modifying the Thermoplastic Elastomer (TPE), resulting in a material with greater rigidity, compatible with most FDM 3D printers on the market, whether they have a direct extrusion system or bowden, being a clear advantage over TPE.

In addition, due to the carbon fibre filler in its composition, the carbon fibre TPU filament offers enhanced properties, high tensile strength, high heat tolerance and higher chemical resistance compared to standard TPU without reinforcement.

3D printed part made of TPU CF

Image 1: Flexible part printed with TPU filament with carbon fibre. Source: Smart Materials.

Another property of the carbon fibre filler in this material is its electrical conductivity. This electrical conductivity does not refer to the electrical conductivity that can be seen in a copper wire, but conducts only what is necessary to conduct electrostatic electricity (ESD). Thanks to this property, TPU filament with carbon fibre is an ideal filament for protecting or supporting objects sensitive to electrostatic current discharges.

If a higher electrical conductivity is required in a flexible material, we recommend the use of conductive Filaflex.

In order to achieve the highest possible electrostatic conductivity, it is recommended to use the highest possible extrusion temperature recommended by the manufacturer (245 ºC).

General information
Material	TPU/TPE
Format	50 g / 500 g
Density	(ISO 1183 ) 1.24 g/cm³
Filament diameter	1.75 / 2.85 mm
Filament tolerance	± 0.05 mm
Filament length	(1.75 mm) ± 167 m / (2.85 mm) ± 63 m

Electrical properties
Surface electrical resistivity	3x10⁴ Ω

Printing properties
Printing temperature	215 - 245 ºC
Print bed temperature	45 - 60 ºC
Chamber temperature	-
Cooling fan	✓
Recommended printing speed	20 - 35 mm/s
Recommended nozzle	Endurecido

Mechanical properties
Charpy impact strength	(ISO 179 1eA) 55 KJ/m²
Elongation at break	(ISO 527-1) 25 %
Tensile strength	(ISO 527-1) 65 MPa
Tensile modulus	1450 MPa
Flexural strength	65 MPa
Flexural modulus	(ISO 527-1) 1450 MPa
Surface hardness	-

Thermal properties
Softening temperature	- ºC

Specific properties
Transparency	-

Other
HS Code	3916.9
Spool diameter (outer)	200 mm
Spool diameter (inner hole)	53 mm
Spool width	54 mm

It is recommended to use some adhesive for the printing base (Magigoo, DimaFix or 3DLac) so that the first layer of TPU filament with carbon fibre adheres properly. Although it is not essential to use hot base, we recommend a temperature between 45 and 60 ºC, a printing temperature of 215 - 245 ºC and the layer fan at 100%. In case of printing problems due to slipping of the filament in the head, it is advisable not to use retraction and to increase the flow in case the extrusion is intermittent.

Due to the carbon fibre content, this filament is abrasive, so the use of standard brass nozzles is not recommended. It is recommended to use a hardened steel nozzle such as E3D or Brozzl. For the same reason, the filament should be removed from the extruder as soon as possible after printing and cleaning filament should be used.