Poly-ether-ether-ketone PEEK LCF40 Low Friction Coefficient Original Color For High-tech Fields

PEEK Material

Polyether ether ketone (PEEK) is a semi-crystalline thermoplastic polymer material with rigid benzene ring, compliant ether bond and carbonyl group which can promote the intermolecular force in its molecular chain. PEEK has excellent wear resistance, electrical insulation, anti-radioactivity, chemical stability, biocompatibility and thermal stability. In addition, PEEK is reusable and has a high recovery rate.

Polyether ether ketone (PEEK) is the only kind of polyether ether ketone (PAEK) material that can be mass-produced at present. PEEK, as a kind of special engineering plastic, has excellent comprehensive properties.

PEEK Application

PEEK is widely used in aerospace, electronic and electrical appliances, biomedicine, Marine protection, the automobile industry, and other fields. PEEK material is an inert material with low surface free energy, and its mechanical properties and frictional properties cannot meet the needs of some special fields. Therefore, it is necessary to modify PEEK composite material to improve its comprehensive properties.

At present, filling modification and blending modification are the main methods for preparing PEEK composite materials. Filler-modified reinforcement materials mainly include fiber, inorganic particles and whiskers; The polymer used for blending modification should have similar polarity and solubility to PEEK. The interface modification method can improve the interface adhesion and enhance the comprehensive properties of PEEK composites.

For example, PEEK filling Long Carbon Fiber(LCF).

As a filling system, fiber can effectively carry part of the load, and the synergistic action between fiber and PEEK can improve the comprehensive performance of composite materials. Carbon fiber and glass fiber are widely used as filler-modified composites because of their high strength, high modulus, and high durability. Long carbon fiber (LCF) can be used as a heterogeneous nucleating agent to promote the crystallization of PEEK in composite materials, which can effectively improve the mechanical properties and friction properties of composite materials.

PEEK Characteristic

(1) Machinability: PEEK resin has the advantages of good high-temperature fluidity, high thermal decomposition temperature, can be used in injection molding, extrusion molding, molding, blow molding, melt spinning, rotary molding and powder spraying and other processing methods.
(2) Radiation resistance: has a strong radiation resistance, in high dose of γ rays mechanical properties can still be more complete retention, more than the general resin radiation resistance of the best polystyrene, can be used as nuclear equipment in the radiation resistance parts.
(3) Flame retardant: PEEK has self-extinguishing, even without any flame retardant, up to UL standard 94V-0.
(4) Creep resistance: Under the action of constant stress, the material will permanently deform into creep within a period of time. PEEK is the best creep-resistance material for thermoplastic resin.
(5) Toughness and rigidity: It has high tensile strength, high stress cracking strength, especially the fatigue resistance under alternating stress is very prominent, and can be comparable to alloy materials.
(6) Self-lubrication (wear resistance) : PEEK has excellent sliding characteristics, suitable for strict requirements of low friction coefficient and wear resistance applications; Especially with carbon fiber, graphite, and PTFE-modified PEEK wear resistance is very superior.
(7) High-temperature resistance: PEEK has a high glass transition temperature (Tg=143℃) and melting point (Tm=334℃). Its load thermal deformation temperature is as high as 316℃, its long-term use temperature is 260℃, and its instantaneous use temperature can reach 300℃. Long-term operation under high temperature and high pressure does not lose any physical performance.
(8) Hydrolytic resistance: PEEK products can work continuously for thousands of hours without significant performance degradation in steam at 260℃ or immersed in high-pressure water; Among all engineering plastics, PEEK has the best resistance to hydrolysis and steam.
(9) Non-toxic: can be used in food hygiene, medical equipment and other fields.
(10) Corrosion resistance: Except for concentrated sulfuric acid, PEEK is insoluble in any solvent, strong acid, strong base, and has high chemical stability.
(11) Fatigue resistance: PEEK has the best fatigue resistance among all thermoplastic resin materials.

PEEK Display

Pure PEEK

PEEK-LCF

Frequently asked questions

Q. How to choose the fiber content of the product? Is the larger product suitable for higher fiber content material?

A. This is not absolute. The content of glass fiber is not more is better. The suitable content is just to meet the requirements of each product.

Q. When customers want to develop a new product, how to choose suitable materials and characteristics?

A. It is necessary to understand the customer's technical requirements, use environment, test conditions for the new product, and choose the model according o various kinds of long-fiber resin substrate characteristics.