Polyether ether ketone (PEEK)

Product Information

Polyether ether ketone (PEEK) is a colourless organic thermoplastic polymer in the polyaryletherketone (PAEK) family, used in engineering applications. PEEK is a semicrystalline thermoplastic with excellent mechanical and chemical resistance properties that are retained to high temperatures. The processing conditions used to mould PEEK can influence the crystallinity and hence the mechanical properties. Its Young's modulus is 3.6 GPa and its tensile strength is 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). The thermal conductivity increases nearly linearly with temperature between room temperature and solidus temperature.It is highly resistant to thermal degradation,as well as to attack by both organic and aqueous environments. It is attacked by halogens and strong Brønsted and Lewis acids, as well as some halogenated compounds and aliphatic hydrocarbons at high temperatures. It is soluble in concentrated sulfuric acid at room temperature, although dissolution can take a very long time unless the polymer is in a form with a high surface-area-to-volume ratio, such as a fine powder or thin film. It has high resistance to biodegradation.

Synonyms

PEEK Specification

Size：customized

Purity: customized

Per your request or drawing

We can customized as required

Properties（Theoretical）

Dielectric   constant @1kHz	3.20 - 3.30 @50Hz-10Khz
Dielectric strength ( kV mm⁻¹ )	190.0 @50µm
Dissipation factor @ 1MHz	0.003
Volume resistivity ( Ohmcm )	10¹⁵-10¹⁶
Coefficient of friction	0.18
Elongation at break ( % )	50
Hardness - Rockwell	M99
Izod impact strength ( J m⁻¹ )	85
Poisson's ratio	0.4
Tensile modulus ( GPa )	3.70 - 4.00
Tensile strength ( MPa )	70.00 - 100.00
Density ( g   cm⁻³ )	1.260 - 1.320
Flammability	V-0@1.5mm
Limiting oxygen index ( % )	35
Radiation resistance	Good
Resistance to Ultra-violet	Fair
Water absorption - equilibrium ( % )	0.5
Water absorption - over 24 hours ( % )	0.100 - 0.300
Coefficient of thermal expansion (   x10⁻⁶ K⁻¹ )	47.000 - 108.000
Heat-deflection temperature - 0.45MPa ( C )	> 260
Heat-deflection temperature - 1.8MPa ( C )	160
Specific heat   ( J K⁻¹ kg⁻¹ )	1340
Thermal   conductivity ( W m⁻¹ K⁻¹ )	0.25 @23°C
Upper working temperature ( C )	250

Chemical Resistance

Specific Properties

Applications of PEEK

PEEK is used to fabricate items for demanding applications, including bearings, piston parts, pumps, high-performance liquid chromatography columns, compressor plate valves, and electrical cable insulation. It is one of the few plastics compatible with ultra-high vacuum applications, which makes it suitable for aerospace, automotive, and chemical industries. PEEK is used in medical implants, for example in creating a partial replacement skull in neurosurgical applications. PEEK is used in spinal fusion devices and reinforcing rods. It is radiolucent, but it is hydrophobic causing it to not fully fuse with bone. PEEK seals and manifolds are commonly used in fluid applications. PEEK also performs well in high temperature applications (up to 500 °F/260 °C).Because of this and its low thermal conductivity, it is also used in fused filament fabrication (FFF) printing to thermally separate the hot end from the cold end.

Packing of PEEK

Standard Packing:

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes Special package is available on request.

ATTs’ PEEK is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.

Chemical Identifiers