PEEK?Polyether ether ether ketone

Polyetheretherketone

The PEEK polymers are linear aromatic, in which the presence of many aromatic components allows the material to have a high yield in the presence of aggressive environments and high temperature. The polyether ether ketone (PEEK) is a thermoplastic organic polymer (color version without load is light brown-gray.) Used in engineering applications, which provides a unique combination of high mechanical properties, temperature resistance and excellent chemical resistance. Among the polyketones polyetherketones (PEK), polieteretercetonacetona (PEEKK) encuntran. Both PEK as PEEKK have high melting temperatures above but other properties are similar.

PEEK Properties

Operating Temperature Max (260 ° C in continuous use

For short periods of temperature 300 ° C

High mechanical strength and creep

High stiffness, even at elevated temperatures

Excellent resistance to hydrolysis and chemical

Excellent wear and friction behavior.

low inherent flammability

Very low smoke emission during combustion

Very good dimensional stability

Good dielectric properties and electrical insulation

Excellent resistance to strong energy radiations

V0 to 1.45 mm without ritadanti calls

Unaffected by moisture

Products range

PEEK can be reinforced with glass fibers, which increase the stiffness of the material and / or carbon fibers, improving, inter alia, the already good self-lubricating properties of the base resin. They have also created versions with mixtures of glass fibers and mineral fillers to reduce the phenomenon of differentiated extractions. To reduce this phenomenon reinforced degrees, need careful design of manufactured items. They have created loaded with substances that enhance and create materials that can meet the specific requirements of wear resistance and friction coefficient versions. Applications that require X-ray shielding can benefit from the excellent thermal and chemical properties PEEK compounds.

PEEK Physical Mechanical Properties

Plastic materials with excellent rigidity and strength over a wide temperature range. As semicrystalline thermoplastic materials have a high fatigue resistance, impact resistance is good enough, which is maintained even at high temperatures. The processing conditions used to print the PEEK can affect crystallinity, and therefore the mechanical properties.

Thermal properties PEEK

Excellent stability of the physical and mechanical properties at elevated temperatures through a glass transition temperature of 217 & 176o C. With a melting point of 343 ° C, and a high Tg of the leak is very stable at various temperatures. Intrinsic flame resistance without additives in most products, exceptionally difficult to ignite with a limit oxygen index (LOI) of 47%, meeting the requirements of UL94 V0 in sections as thin as 0.41 mm. Extremely low smoke generation.

Chemicals resitance

Unlike most amorphous thermoplastics, PEEK resins maintain a high strength and do not crack when exposed to liquids aircraft and automobiles, aliphatic hydrocarbons, alcohols, acids and aqueous solutions weak but has low medium resistance susceptibility and stress cracks. Good hydrolysis resistance, suitable for steam sterilization. The PEEK supports prolonged exposure to various cleaning agents and food groups without deterioration, cracking or losing their initial physical properties. Good resistance to high energy radiation (gamma and X-ray)

Applications PEEK

The PEEK represents an excellent compromise between chemical resistance, heat resistance and tribological performance. Their intrinsic characteristics make it an excellent product for the production of thermoplastic material where high performance is required even in extreme conditions of use. Natural Peek is suitable for the construction of parts that must withstand high temperatures as parts of industrial furnaces. By taking advantage of the good features of the fire and heat resistance and chemical to perform: in injection molded components for automotive, aerospace, electronics and medicine, cable insulation, films, fibers, ribbons and sheets made of PEEK fiber reinforced special .PEEK, Extra pure, suitable for the realization of the prosthesis, especially for short-term use in medical catheters and endoscopes sector PEEK. Prepreg reinforced PEEK carbon fiber, aramid, steel and glass compete with materials thermo fixed. It is used for medical equipment parts, washers, insulators, shoes and caps axis high speed, pump parts.

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