Application and characteristics of PEEK

PEEK is a high temperature resistant, high performance thermoplastic special engineering plastic. It has good mechanical properties, chemical resistance, abrasion resistance, hydrolysis resistance, etc.; it has light specific gravity and good self-lubricating performance. Due to its very good processing performance, it can be filled with carbon fiber, molybdenum disulfide, etc. to further improve the lubricating performance and Mechanical strength. The broad application space of PEEK engineering plastics involves aviation, machinery, electronics, chemicals, automobiles and other high-tech industrial fields. It can manufacture high-demand mechanical parts, such as gears, bearings, piston rings, support rings, seal rings (letters), Valve discs, wear rings, etc. The excellent performance of PEEK material is mainly manifested in the following aspects:

1. High temperature resistance
PEEK has a higher glass transition temperature and melting point (334°C), which is one of the reasons why it can be reliably used in applications requiring heat resistance. Its load thermal deformation temperature is as high as 316℃, and its continuous use temperature is 260℃.

2. Mechanical characteristics
PEEK is a plastic with a balance between toughness and rigidity. In particular, its excellent fatigue resistance to alternating stress is the most outstanding among all plastics, comparable to alloy materials.

3. Self-lubricating
PEEK has outstanding sliding properties among all plastics, and is suitable for applications that strictly require low friction coefficient and wear resistance. In particular, the self-lubricating performance of PEEK modified with carbon fiber and graphite is better.

4. Chemical resistance (corrosion resistance)
PEEK has excellent chemical resistance. Among ordinary chemicals, only concentrated sulfuric acid can dissolve or destroy it. Its corrosion resistance is similar to that of nickel steel.

5. Flame retardancy
PEEK is a very stable polymer. Samples with a thickness of 1.45mm can reach the highest flame retardant standards without adding any flame retardants.

6. Peel resistance
PEEK has good peel resistance, so it can be made into thin-covered wires or magnet wires, and can be used under harsh conditions.

7. Fatigue resistance
PEEK has the best fatigue resistance among all resins.

8. Radiation resistance
The ability to resist gamma radiation is very strong, surpassing polystyrene, which has the best radiation resistance in general resins. It can be made into a high-performance wire that can maintain good insulation capacity even when the gamma radiation dose reaches 1100Mrad.

9. Hydrolysis resistance
PEEK and its composite materials are not chemically affected by water and high-pressure water vapor. Products made of this material can still maintain excellent characteristics in high-temperature and high-pressure water for continuous use.