Essentium HTN-Z nylon de alta temperatura ESD View larger

Essentium HTN-Z high temperature ESD nylon

Essentium

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145,00 €
145,00 €

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High temperature ESD safe nylon filament ideal for use in static/combustible/explosive atmospheres.

Essentium is a US company with branches in Asia and Europe. They specialize in industrial 3D printers and technical filament. Their innovative material solutions are helping many companies enter the 4.0 industry by not only prototyping but also manufacturing on a large scale in-house, with quality and in a quick and affordable way. The Essentium catalog contains numerous cutting-edge technical filaments, mostly polymers and blends designed for exceptional strength, flexibility and high mechanical performance in challenging industrial settings. The Essentium filaments are used for many advanced purposes across numerous disciplines, for example in aerospace and defense, automotive, biomedical, contract manufacturing, consumer goods, and electronic manufacturing.

Technical filaments for specific uses

Essentium's HTN Z (High Temperature Nylon) filament is part of the manufacturer's vast material portfolio and belongs to the high temperature nylon (PA) family as well as the ESD Safe material category, the Z-brand. This filament is composed of > 90 % polyamide copolymer and MWCNT - Multi-walled carbon nanotube.

Video 1: A demonstration of the HTN Z ESD safety features. Source: Essentium.

Nylon (polyamide copolymer), is a synthetic semi-crystalline polymer created in the process of binding alternating diamine and dicarboxylic acid monomers. Nylon’s first commercial application was in making toothbrush bristles and women’s stockings in the 1930s. During WWII nylon was used to make parachutes, ropes, body armor and helmet liners for the US army. Nowaydays, nylon polymers have even more commercial applications, for example in the fabrics and fibers industry, molding in the automotive industry, or in the making of electronics and food packaging. Nylon is commonly used in 3D printing (as powder in SLS and MJF, or as pellets and filament in FDM) due to its qualities of durability, flexibility, resistance to abrasion, friction, corrosion and chemicals. Nylon is an extremely versatile thermoplastic and it is often used as a base for specialistic filament blends with various technical properties.

A high temperature filament

The thermal and mechanical properties of HTN Z have been significantly improved in comparison to standard nylon filaments in order to ensure high performance and high-temperature tolerance. HTN Z has a higher heat deflection temperature than regular nylons, it is tougher and stronger, more resistant to wear. Its chemical and solvent resistance have been boosted as well.

What’s more, the Essentium HTN Z is characterized by slow moisture absorption, which makes it easy to print and reduces the risk of warping. The manufacturer describes it as a drop-in replacement for Acetal, also a very strong and heat resistant engineering plastic.

ESD safe material

ESD (electrostatic discharge) is a phenomenon often experienced in everyday life in hair static or when a "kick" or "spark" of electricity is released upon touching a grounded object, for example a doorknob or even another person. Electrostatic discharge events such as these are harmless unless it happens on the manufacturing floor in industries where electronic components are handled. The Essentium HTN Z filament is the solution to that problem. It is destined for medium-duty electronics production. It acts as a dissipator of the ESD and lets the harmful discharge "evacuate" safely on the surface of a piece 3D printed with the HTN Z filament. ESD safe materials are also extremely useful in settings with potentially explosive atmospheres (petrochemical plants, coal mines, flour mills, areas with powder-based 3D printers).

A circuit board rack, an assembly tray and a component enclosure printed with the Essentium HTN ZA circuit board rack, an assembly tray and a component enclosure printed with the Essentium HTN ZA circuit board rack, an assembly tray and a component enclosure printed with the Essentium HTN Z

Image 1: A circuit board rack, an assembly tray and a component enclosure (left to right) printed with the Essentium HTN Z. Source: Essentium.

Normally, to make a filament ESD safe, antistatic coatings or conductive fillers are added to the material. The most common fillers are carbon black and graphite. They can, however, have a negative impact on the performance of the filament or the 3D printed piece, making it brittle, causing it to leave a black mark like a pencil, or even cause latent failure in electronics. The Z line of filament is Essentium’s way to overcome those inhibitions produced by standard ESD filaments containing fillers. Instead, conductive nanomaterials are used on the surface of the filament, so the mechanical performance of pieces printed with HTN Z is not compromised. Since the percentage of carbon in this filament (around 0.01 %) is very low compared to other ESD filaments, which normally need to contain 20-30 % of carbon fiber to have enough surface resistivity, the overall cost of HTN Z is much lower than that of standard ESD filaments.

Thanks to those properties, the Essentium HTN Z can be used to 3D print jigs and fixtures for electronic device manufacturing (circuit board racks, assembly trays, component enclosures). The added benefit is that, being a high temperature nylon, the HTN Z can be safely used in high temperature surroundings, for example in wave soldering or in reflow ovens, and it will not melt or degrade easily. HTN Z can also be used to 3D print components that handle powders and pellets (they tend to cling to charged objects) or to make industrial equipment for spaces with combustible or explosive atmospheres.

Impact strength (KJ/m2) 3
Elongation at break (%) 120
Tensile strength (MPa) 72
Tensile modulus (MPa) 3450
Flexural strength (MPa) 134
Flexural modulus (MPa) 3730
Abrasion resistance Abrasion resistance
Electrical conductivity Electrical conductivity
Chemical resistance Chemical resistance
Hide color variations (Hide color variations)

With nylon, and especially high-temperature nylon, warping may occur during printing, caused by the temperature difference between the extruded plastic and the ambient temperature.This Essentium HTN Z does not warp easily but should warping occur, it can be reduced in 4 ways:

  1. By keeping the ambient at around 45 ºC by using a heated bed or a printer with a heated chamber or enclosure.
  2. By disabling fan cooling.
  3. By using a skirt, a brim or a raft parameter in the slicing software.
  4. By applying a bed adhesion spray designed to prevent warping.

Adhesion problems may occur when printing with nylon. Essentium recommends using the Magigoo PA stick or PVA glue to ensure proper bed adhesion and prevent a failed print.

Nylon is a highly hygroscopic material. Despite this particular HTN Z filament’s low moisture absorption, proper storage must be ensured to prevent the filament from getting humid. It should be stored in a vacuum sealed packaging or in a drying cabinet or case, such as the Fiber Three drying case, available in the version F3 Safe Light or F3 Safe Long Run. For even better results, it should be stored together with the Slice Engineering filament drying capsule. If HTN Z absorbs more than 400 ppm moisture, it should be dried in a low dew point oven or a vacuum oven for 6-8 hours. The exact instructions are given in the technical datasheet in the downloads section.

The manufacturer recommends printing this filament at 270-290 ºC and 20-60 mm/s (first layer speed of 15-20 mm/s), with the fan speed of 0-20 %. The optimal bed temperature for HTN Z is 70-80 ºC. More printing settings can be consulted in the technical datasheet in the downloads section.

This filament has been developed for electrostatic discharge applications. Therefore, it has the electrical properties according to the following diagram:

Indicative schematic for electrical material properties.

Image 1: Indicative schematic for electrical material properties. Source: Essentium.
PositionResistance 
100 mm/s @ 295 ºC
1  3.54e6
2  1.66e6
3  3.74e3
4  7.60e3
5  3.40e4
6  2.52e5
Table 1: Electrical properties of the HTN Z filament. Source: Essentium.
General information
Manufacturer Essentium
Material HTN Z
Format 750 g spool
Density 1.2 g/cm3
Filament diameter 1.75 mm, 2.85 mm
Diameter tolerance -
Filament length ±259.8 m (Ø 1.75 mm - 750 g)
±98 m (Ø 2.85 mm - 750 g)
Colour Black
RAL/Pantone -
Printing properties
Printing temperature 270 - 290 ºC
Base/bed temperature 70 - 80 ºC
Chamber temperature -
Layer fan 0 - 20 %
Print speed 20 - 60 mm/s
Printing surface G-10/FR4 or Glass
Mechanical properties
Izod Impact resistance (ISO 180) XY 3.6 KJ/m2
45/45 3.8 KJ/m2
YX 4.6 KJ/m2
ZX 2.33.4 KJ/m2
Charpy impact resistance -
Elongation at break (ISO 527-2) XY 120 %
45/45 2.3 %
YX 4.1 %
ZX 3.1 %
Tensile strength (ISO 527-2) XY 72.8 MPa
45/45 63.3 MPa
YX 63.1 MPa
ZX 56.7 MPa
Tensile modulus (ISO 527-2) XY 3450 MPa
45/45 3490 MPa
YX 3230 MPa
ZX 2860 MPa
Flexural Strength (ISO 178) XY 134 MPa
45/45 121 MPa
YX 90 MPa
ZX 97.6 MPa
Flexural Modulus (ISO 178) XY 3730 MPa
45/45 2930 MPa
YX 2770 MPa
ZX 2290 MPa
Surface hardness -
Electrical properties
Resistance (200 mm/s @ 345˚C) 3.74e3 Ω
Thermal properties
Softening temperature -
Melting temperature 225 ºC
Additional information
HS Code 3916.9
Spool diameter (outside) -
Spool diameter (inside) -
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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