PEEK

Non Melt

Melt

Polyether ether ketone (PEEK) is a colourless organic thermoplastic polymer in the polyaryletherketone (PAEK) family, used in engineering applications introduced in 1980s. PEEK is a semicrystalline thermoplastic with excellent mechanical and chemical resistance properties that are retained to high temperatures. This semicrystalline material does not dissolve in all known liquids and boasts excellent resistance to almost all organic and non-organic bonds. It is highly resistant to thermal degradation as well as attack by both organic and aqueous environments. It is attacked by halogens and strong acids as well as some halogenated compounds and aliphatic hydrocarbons at high temperatures beyond its limits. It dissolves completely in concentrated sulfuric acid at room temperature.

The processing conditions used to mold PEEK can influence the crystallinity, and hence the mechanical properties. The Young's modulus is 3.6 GPa and its tensile strength 90 to 100 MPa. PEEK has a glass transition temperature of around 143 °C (289 °F) and melts around 343 °C (662 °F). Some grades have a useful operating temperature of up to 250 °C (482 °F) .

Because of its robustness, PEEK is used to fabricate items used in demanding applications, including bearings, piston parts, pumps, HPLC columns, compressor plate valves, and cable insulation. It is one of the few plastics compatible with ultra-high vacuum applications. It is extensively used in the aerospace, automotive, and chemical process industries. Furthermore, PEEK shows no tendency to crack under stress.

Its properties make PEEK ideal for applications when the pressure increases over time at high temperatures without leading to any deformations or degradations.

Working Temperature Range:    -60deg. C to 240deg. C

Melting temperature:    +340deg. C

Features:

  • Maximum pressure: Class 2500
  • Smooth operation under high differential pressure
  • FDA approved
  • Good wear and abrasion resistance
  • Excellent resistance to high energy radiation (Gamma and X rays)
  • Incompatible with media such as Chlorine, Bromine, H2SO4
  • Relative high torque
  • Color: Beige

Classification:

  1. Injection molding
  2. Extrusion grades
  3. Compression molding
  4. Fused filament fabrication

Applications:

  • Semiconductors
  • Aerospace
  • Electrical
  • Medical
  • Valves and pump parts
  • Food Processing

Grades (ASTM D 3159):

Series J1

Series J2

Appearance

Beige granules

Beige granules

MFR (g/10min)

>24.0

8.1-24.0

Molecular Weight

Low

Low

Applications

Very Thin wall sheathed wires (0.1-0.3mm), cross-linked cables, Tubing’s, Films

Thin wall wire and cable insulatio, injected molded small parts, films, tubes, pipes

Fabrication Techniques

Extrusion, Injection

Extrusion, Injection