PEEK (Polyetherketone) and PEKK (Polyetherketoneketone) are high-performance engineering thermoplastics with similar chemical structures but differing properties and applications.

PEEK is a semi-crystalline thermoplastic known for its excellent mechanical and thermal properties, including high strength, stiffness, and temperature resistance. It has a high glass transition temperature (Tg) of about 143°C and can maintain its mechanical properties up to 250°C. PEEK is used in a variety of applications, including aerospace, automotive, medical, and industrial sectors.

PEKK, on the other hand, is a newer material that has gained popularity in recent years due to its unique properties. It is also a semi-crystalline thermoplastic with a slightly higher Tg of around 160°C and can maintain its mechanical properties up to 240°C. PEKK has better chemical resistance and fatigue resistance than PEEK, making it suitable for applications in harsh chemical environments and under high cyclic loading conditions. PEKK is commonly used in aerospace, automotive, and oil and gas applications.

In summary, PEEK and PEKK have similar chemical structures but differ in properties and applications. PEEK offers excellent mechanical and thermal properties, while PEKK provides better chemical and fatigue resistance. The choice between the two materials depends on the specific requirements of the application.

Not all PEEK materials are the same, and different manufacturers produce different PEEK. However, in terms of basic mechanics, thermodynamics, and electricity, with the continuous improvement of the PEEK polymerization process, there are not many differences. For example, the performance of JUNDE PEEK is similar to that of VICTREX PEEK450G, Keaspire PEEK, and VESTAKEEP 5000G, with 95 percent of product applications being essentially the same. The main difference lies in the material's flow properties.

The natural color of PEEK is close to khaki or brown. We commonly use two types: natural color and black. Depending on different needs, we can also produce various color particles.

Like most commercial PEEK, it has limited resistance to UV light, so care should be taken to avoid light and maintain proper environmental temperature during storage.

Unfilled PEEK itself has excellent physical and chemical properties. Its characteristics of high strength, high toughness, corrosion resistance, high temperature resistance, good insulation, and high purity basically meet the needs of most industrial environments.

Currently, due to its excellent electrical, mechanical, high temperature, and corrosion resistance properties, PEEK is widely used in the petroleum, food processing, automotive, and aerospace industries.

Polyetheretherketone (PEEK) is a linear polymer with a main chain consisting of aryl, ketone, and ether bonds. PEEK contains a large number of benzene rings in its molecular chain, which gives it heat resistance comparable to polyimide, while the two ether chains and one ketone group provide the material with flexibility and excellent processability.