PEEK (polyether ether ketone) is a high-performance engineering plastic with many unique properties that make it very popular in a variety of industries. Here are some advantages and disadvantages of PEEK materials:

Advantages:

High temperature performance: PEEK can operate at long-term service temperatures up to 250°C and can withstand

 temperatures up to 310°C in the short term, which makes it suitable for high temperature environments.

Mechanical strength: PEEK has very good strength and stiffness as well as excellent impact strength, even at high 

temperatures.

Chemical resistance: PEEK is extremely resistant to many organic and inorganic chemicals, including oils, acids, 

solvents, and water vapor.

Wear resistance and self-lubrication: PEEK has good wear resistance and excellent self-lubrication performance, 

and is suitable for use as bearings and seals.

Biocompatibility: PEEK is generally bioinert and can be used in medical applications such as implants and medical devices.

Dimensional stability: PEEK shows good dimensional stability over a wide temperature range and is insensitive to 

changes in temperature and humidity.

Flame retardant: Unfilled PEEK is self-extinguishing and does not release toxic or corrosive gases when burned.

Cons:

High cost: Compared to many other plastics, PEEK is relatively expensive, which may limit its application in cost-sensitive areas.

Processing difficulty: Due to its high melting point and processing temperature, PEEK processing is more challenging 

than general plastics, which may require special processing equipment and techniques.

Compatibility with certain chemicals: Although PEEK has good resistance to many chemicals, it may react with some 

acids and bases, which users need to evaluate before using in special environments.

Water absorption: PEEK can absorb small amounts of water, which can affect its electrical and mechanical properties, 

especially in high humidity environments.

Recyclability: Due to its high performance and cost, PEEK recycling may not be as feasible and economical as other 

more common plastics.

In summary, although PEEK has many advantages, its high cost and processing difficulty may limit its use in some applications.