Polymers can be categorized into two main types based on the spatial arrangement of their macromolecules: amorphous and semi-crystalline.
Amorphous materials look translucent and they have lower fatigue and stress resistance but better impact resistance.
Some examples of polymers with an amorphous morphology are:
- polycarbonate (PC)
- polyetherimide (PEI or Ultem®)
- acrylonitrile butadiene styrene (ABS)
- polystyrene (PS)
- polysulfone (PSF)
Semi-crystalline polymers offer greater stiffness and mechanical stability over a wider temperature range.
Among the semi-crystalline polymers there are:
- polyamides (PA)
- polyethylene (PE)
- polyacetal (POM)
- polyethylene terephthalate (PET).
Both types, when reinforced, show significant improvements in strength and stiffness, especially beyond their glass transition temperature (Tg).
What is the difference between PEEK and PEKK?
Both PEEK and PEKK, popular members of the semi-crystalline PAEK (polyaryletherketones) family, are known for their exceptional mechanical, thermal, and chemical resistance. Their degree of crystallinity varies significantly based on the processing method, and they have demonstrated compatibility with 3D printing technologies like Fused Filament Fabrication (FFF) and Fused Deposition Modeling(FDM).
Polyetherketoneketone (PEKK)
Polyetherketoneketone (PEKK) is a high-performance thermoplastic known for its exceptional chemical and mechanical resistance, attributed to its unique molecular structure, which features two ketone groups in each repeating unit. This distinct molecular composition not only sets PEKK apart from other plastics but also allows its properties to be finely tuned by adjusting the ratios of its components. As a result, PEKK is highly suited for industries requiring plastics that can withstand extreme temperatures, harsh chemicals, and mechanical stress, such as aerospace, automotive, and medical sectors.
Polyetheretherketone (PEEK)
Polyether Ether Ketone (PEEK), a high-performance polymer with a unique molecular structure alternating between ether and ketone groups, offers exceptional mechanical strength, thermal stability, and chemical resistance, making it a highly sought-after material across various industries. Additionally, PEEK’s versatility allows it to be seamlessly integrated into complex designs and applications through multiple manufacturing methods, including injection molding, extrusion, and machining.
Type of Application of PµSL 3D Printed Parts
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