PETG

PETG is a thermoplastic based on the known PET (polyethylene terephthalate). To improve transparency, glycol is used, which also comes along with a lower viscosity.

Extrudr PETG has been specially optimized for FDM/FFF processes and stands for maximum functionality even under heavy mechanical stress. With its optimal printing properties, the material is particularly suitable for high-performance applications.

  • High chemical resistance
  • Glass surface
  • Low shrinking
  • FDA compliant
  • 100% Recyclable
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Material Information

Values according to ISO 527

Values according to ISO 527

Values according to ISO 306

Material Properties

Maximum Stress
Maximum Stress
Hoch
Elongation at Break
Elongation at Break
hohe Flexibilität bei gleichzeitig guter Steifheit
Temperature Resistance
Temperature Resistance
Bis 90°C
Ease of Printing
Ease of Printing
Leicht fortgeschritten
Visual Quality
Visual Quality
Gläserne Optik mit intensiven Farben
Layer Adhesion
Layer Adhesion
Sehr gut
Impact Resistance
Impact Resistance
Sehr gut

Wiki-Tech

History

Polyethylene terephthalate (PET) was developed in 1941 in the course of polyester production by John Rex Whinfield and J. T. Dixon.

The further development was then continued by the British chemical company ICI and the American company Du Pont. This led to the production of the first PET fibres, which spread worldwide, especially from 1970 onwards. The polyester fibres were used for textile production and are still used in various fields.

Manufacture

PET is obtained in polyester production and can be further modified with different molecules to obtain different properties. The PETG used in 3D printing is a PET extended by a glycol. This gives the material special properties and can also be melted down more often without the material losing transparency or becoming brittle.

PET is obtained by polycondensation, in which monomers are fed into polymers by condensation reactions. The reaction produces, among other things, intermediates, such as oligomers, which react themselves and form macromolecules.

For example, in the reaction of terephthalic acid (C8H6O4) with ethandiol (C2H6O2) occurs under separation of a polyester from a water molecule. If this reaction is multi-stage, it is called polycondensation.

3D-Printing

In 3D printing, the PETG is known for its special optical properties and ease of use, along with the good print results. In addition, it has a high mechanical resistance, which is why it can also be used for large printed pieces. The high chemical resistance and 100% reusability as well as the odourless printing make the material attractive for a wide range of applications.

Technical data

Special properties of the PET are resistance to inorganic acids (mineral acids), and the high breaking strength. For these reasons, THE PET is used in many ways. PET also has special recycling properties. In Europe, 48.5% of PET bottles are now recycled.

The material is colourless and transparent when undyed and can be used for special applications.

Applications

In addition to the production of plastic bottles, PET applications can also be found in the processing into textile fibres – used in sports clothing – or as the main material of plastic prostheses. The material is also used for foils, vases and textile fibres. Other applications are generally where a high level of transparency is required.

Thanks to its low warping and ease of printing, the filament is easy to access. To get the most out of the print object, it can either be sanded or coated with clear varnish to get a smooth surface.

Areas of Use

Bottles, foils, vases, textile fibres, prototyping with 3D printing

Due to high chemical resistance and 100% recyclablability, it can be used in many different areas. In addition, the material can be printed odourlessly.

Wide color range
FDA compliant
RoHS compliant
Reach compliant
Odorless

Showcase

Problem of detailed model designs:

Especially in the architectural field, models are being built for a better representation of the design. Models are usually created from cardboard or similar materials. However, these are quite filigree and time-consuming. To facilitate this work, these models are printed in plastic.

 

The result is detailed, robust models that can be exported and printed directly from the original plans. After a short fine-tuning of the model, a realistic model of the original can be designed and produced in a short time.


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