Essentium TPU 95A-Z ESD View larger

Essentium TPU 95A-Z ESD

Essentium

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95,00 €
95,00 €

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Technical TPU filament ideal for electrostatic discharge protection applications.

Essentium is a manufacturer of professional FDM 3D printing equipment and materials at the forefront of additive manufacturing. Essentium stands out from other manufacturers for its development of technical materials oriented to specific applications in sectors such as aeronautics, automotive or the energy sector.

Undoubtedly, one of the most outstanding sets of materials in Essentium's catalogue is ESD materials. Essentium has taken into account the diverse needs of companies and has developed filaments with different compositions and characteristics, offering concrete and specific solutions. Therefore, it has high temperature ESD filaments or flexible ESD materials, differentiating itself from other manufacturers who only have standard ESD materials such as ABS.

An electrostatic discharge (ESD) is the sudden transfer of electrical charge from one object to another. This charge transfer sometimes results in a visible and even audible spark. In an electronics manufacturing environment, such an event can cause catastrophic damage to sensitive electronic devices and integrated circuits. For this reason, it is necessary to minimise the risks by using ESD-safe materials.

ESD

Image 1: Electrostatic discharge. Source: Essentium.

Flexible ESD filament

Within the range of flexible ESD filaments is the TPU 95A-Z ESD filament, a static conductive TPU-based filament.

TPU (Thermoplastic Polyurethane) is a thermoplastic, more specifically a linear elastomer polymer belonging to the polyurethane family. Within TPU, different hardness ranges can be found. In the field of FDM 3D printing, hardness is usually indicated by the Shore A or Shore D scales, which perfectly cover the hardness ranges of thermoplastics for AM.

Video 1: Essentium Materials Guide: ESD. Source: Essentium.

TPU 95A-Z ESD filament has a 95A Shore hardness, resulting in a medium-hard filament with good flexibility, impact resistance and chemical resistance typical of the base material. In addition to these properties, TPU 95A-Z ESD filament is developed to divert electrostatic electricity.

Characteristics and applications in industry

Its most important properties are the following:

  • ESD safe
  • Flexible
  • High tensile strength
  • High elongation at break percentage
  • Excellent abrasion, tear and wear resistance
  • High impact resistance
  • Excellent vibration damping
  • Low temperature flexibility
  • Excellent resistance to chemicals, solvents, oil and ozone

Video 2: Characteristics of ESD filaments. Source: Essentium.

Typically, most ESD filaments contain relatively high percentages of carbon (15-25%), modifying the characteristics of the base polymer, potentially compromising its performance and leading to possible contact marks on other materials. Unlike these filaments, Essentium's ESD filaments are designed to provide the necessary surface resistance properties without compromising the performance of the base polymer, in this case TPU. In addition, 95A-Z ESD TPU is a clean material that will not mark other parts on contact.

All this is achieved with a much lower percentage of carbon than other filaments, as low as 0.01%, thanks to the multi-layer technology developed by Essentium. This technology uses high purity carbon nanotubes combined with a proprietary extrusion process to produce a multilayer filament that concentrates the carbon nanotubes on the surface of the filament rather than throughout the volume of the material.

Multi-layer technology.
Image 2: Multi-layer technology developed by Essentium. Source: Essentium.

TPU 95A-Z ESD filament is a material with easy processing due to its low friction surface, which facilitates and guarantees a smooth feeding of the material during the printing process. It can be printed on almost any desktop FDM 3D printer on the market and can be 3D printed even with a bowden extrusion system.

All in all, TPU 95A-Z ESD filament has an excellent balance between its elongation, impact and tensile strength properties, combined with its electrostatic electrical conductivity. For all these reasons, it is an ideal material for the manufacture of parts such as:

  • Rapid prototyping: TPU 95A-Z ESD enables rapid prototyping to bring ideas to life with great immediacy, allowing different models or improvements on an initial design to be materialised, tested and presented until the desired result is achieved.
  • End-use parts: Thanks to its mechanical and chemical properties, the TPU 95A-Z ESD filament allows 3D printing of end-use parts and components quickly, accurately and with good repeatability, enabling in some cases the production of parts that would be very complex using other manufacturing methods or technologies.

Some specific applications of TPU 95A-Z ESD filament would be the manufacture of electronic products, ESD safety devices and inserts, anti-vibration pads, bushings, vibration isolation for automobiles, grips, flexible tubes or hoses, making it very useful for all types of industries. Another common application of this material is to make dust-free parts for laboratories and high development centres, as most commonly used plastic materials attract dust and dirt by accumulating static electricity.

Elongation at break (%) 435
Tensile strength (MPa) 22
Surface hardness 5
Flexibility Flexibility
Abrasion resistance Abrasion resistance
Vibration resistance Vibration resistance
Electrical conductivity Electrical conductivity
Chemical resistance Chemical resistance
Hide color variations (Hide color variations)

TPU 95A-Z ESD filament has been developed with the aim of offering a versatile and easy-to-print flexible material. This is achieved thanks to its low-friction surface, which ensures a smooth material feed throughout the 3D printing process.

When processing this material, a printing temperature of 230-250°C and a bed temperature of 50-80°C is recommended. This filament does not require the use of 3D printing equipment with a heated chamber.

The recommended printing speed is between 20 and 40 mm/s, being recommended to use a lower printing speed for the first layer (between 15 and 20 mm/s). It is not necessary to work with a layer fan, although up to 20 % can be used. On the other hand, to obtain an optimal result, it is recommended to work with a flow rate of 1.05.

TPU 95A-Z ESD filament has good adhesion to the base and between layers, although this can be improved by using an adhesive such as Dimafix.

With TPU 80A-Z ESD it is not necessary to use a reinforced nozzle as this filament has low abrasion.

To obtain optimum printing results with this filament, it should be taken into account that it is a hygroscopic material, so it should be kept free of moisture. For this purpose, it is advisable to use an F3 Safe case, which allows both storing the material and keeping it free of humidity during the printing process. If the material is exposed to moisture, it is recommended to dry it with a filament dryer such as PrintDry Pro. Once dry, it is recommended to store it in a container such as the PrintDry Smart Filament Container.

General information
Manufacturer Essentium
Material TPU 95A-Z ESD
Format 750 kg spool
Density 1.15 g/cm3
Filament diameter 1.75 mm, 2.85 mm
Diameter tolerance -
Filament length ±211 m (Ø 1.75 mm - 750 g)
±102 m (Ø 2.85 mm - 750 g)
Colour Black
RAL/Pantone -
Printing properties
Printing temperature 230 - 250 ºC
Base/bed temperature 50 - 80 ºC
Chamber temperature Not recommended
Layer fan 0 - 20 %
Flow 1.05
Recommended print speed 20 - 40 mm/s
Mechanical properties
Izod impact resistance  -
Charpy impact resistance -
Elongation at break (ASTM D638) XY 639 %
YX 435 %
ZX 48 %
Tensile strength (ASTM D638) XY 34 MPa
YX 22 MPa
ZX 7 MPa
Tensile modulus -
Bending strength -
Bending modulus -
Surface hardness (ISO 868) 95 Shore A
Electrical properties
Surface resistivity 106 – 108 Ohms
Thermal properties
Softening temperature -
Melting temperature -
Transparency -
Brightness value -
Additional information
HS Code 3916.9
Spool diameter (outside) -
Spool diameter (inner bore) -
Reel width -


*The typical values listed 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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