polyether ether ketone chemical formula

Polyether Ether Ketone Formula Guide for Singapore

Welcome to our comprehensive guide on polyether ether ketone (PEEK) – a highly versatile engineering thermoplastic. In this article, we will explore the chemical formula, structure, properties, synthesis, and applications of PEEK. Whether you are in the aerospace, automotive, medical, or electrical industry, this guide will provide valuable insights into the benefits and uses of PEEK in your specific field.

PEEK, with the chemical formula (C19H12O3)n, stands out as a semi-crystalline thermoplastic renowned for its exceptional properties. It is available in standard stock shapes such as sheets, rods, and tubes, making it suitable for various machining requirements. The thermoplastic resin exhibits excellent chemical compatibility and can operate reliably at high temperatures of up to 260°C (480°F). Its melting point of approximately 341°C (646°F) makes it ideal for applications involving hot water or steam environments.

PEEK’s physical properties, including impressive flexural and tensile strength, make it a preferred choice in industries like aerospace, automotive, medical, and electrical, among others. By replacing metals, PEEK offers lighter, stronger, and more durable components for various applications.

The synthesis of PEEK involves a step-growth polymerization method that utilizes the potassium salt of hydroquinone and 4,4′-difluorobenzophenone. This process results in a high molecular weight polymer with customizable grades to meet specific processing requirements.

The Advantages of TECAPEEK PEEK Material

When it comes to PEEK materials, TECAPEEK is a leading manufacturer with over three decades of experience in PEEK extrusion. We offer a vast portfolio of stock shapes, including standard PEEK as well as specialized grades that cater to specific industries such as medical, semiconductor, electronics, and mechanical engineering. With TECAPEEK, you can be assured of the highest quality PEEK materials for your applications.

One of the key advantages of TECAPEEK PEEK material is its exceptional properties. PEEK is renowned for its high heat resistance, excellent mechanical strength, and good chemical resistance. This makes it an ideal choice for demanding applications that require durability and reliability, even in harsh environments.

TECAPEEK PEEK products are also highly customizable. We offer a wide range of PEEK grades that can be tailored to meet your specific requirements, such as enhanced tensile strength, improved wear resistance, or increased stiffness. Our dedicated team is here to assist you in selecting the right PEEK grade for your application.

Another advantage of TECAPEEK PEEK material is its compatibility with sterilization methods. PEEK is inherently resistant to chemical sterilization processes, such as autoclaving and gamma radiation. This makes it suitable for use in medical and healthcare applications, where stringent sterilization is required.

In addition, TECAPEEK PEEK materials comply with RoHS regulations, ensuring that they are suitable for electrical and electronic equipment. This makes them an excellent choice for applications in the electrical and electronics industry, where safety and compliance are top priorities.

Application Examples

TECAPEEK PEEK material finds application in a wide range of industries and products. Here are some examples:

  • Insulators
  • Connectors
  • Gear wheels
  • Sliding elements
  • Compressor components
  • Valves
  • Surgical instrument parts
  • Drill heads

These are just a few examples of the many applications where TECAPEEK PEEK material excels. Its versatility, combined with its outstanding properties, makes it a preferred choice for various industries.


Synthesis and Properties of PEEK

PEEK, or Polyether Ether Ketone, is a high-performance thermoplastic that offers exceptional properties for various applications. Let’s explore the synthesis process and key properties that make PEEK a preferred choice in industries such as aerospace, automotive, medical, and electrical.

PEEK Synthesis

PEEK is synthesized through a nucleophilic substitution reaction involving the potassium salt of hydroquinone and 4,4′-difluorobenzophenone. This unique process occurs under milder conditions compared to other methods, resulting in a high molecular weight polymer with superior properties.

PEEK Properties

PEEK exhibits a range of remarkable properties that contribute to its popularity in various industries. Here are some key properties of PEEK:

  1. Chemical Stability: PEEK demonstrates outstanding chemical resistance, making it highly resistant to degradation when exposed to organic solvents, acids, and bases. It is even capable of withstanding concentrated sulfuric acid.
  2. Thermal Stability: PEEK possesses excellent thermal stability, allowing it to maintain its mechanical properties even at high temperatures. It has a maximum continuous use temperature of 240 °C, making it suitable for applications that require heat resistance.
  3. Mechanical Strength: PEEK is a semicrystalline thermoplastic renowned for its exceptional mechanical strength. It offers high tensile and flexural strength, allowing it to withstand demanding operating conditions.

In addition to these properties, PEEK also exhibits good radiation resistance, excellent wear resistance, and low flammability, making it a versatile material in various challenging environments.

Customization and Manufacturing

One of the advantages of PEEK is its customization options. PEEK can be easily modified with fillers such as glass or carbon fibers to enhance specific properties based on application requirements. This flexibility allows for tailored solutions that meet unique manufacturing demands.

Manufacturing of PEEK involves extrusion or injection molding processes, depending on the desired shape and size of the final product. These manufacturing techniques ensure precise control over the material’s properties, resulting in consistent and reliable performance.

Applications of PEEK

Due to its exceptional properties and versatility, PEEK finds applications in a wide range of industries. Some common applications include:

Industry Applications
Aerospace Aircraft components, radomes, fuel valves, ducting
Automotive Clutch and gearbox components, turbocharger impellers, automotive parts
Medical Surgical instruments, biomedical components, short-term implants
Electrical Wire coatings, semiconductor wafer carriers

PEEK’s exceptional properties make it a reliable choice in industries that require materials with excellent chemical and thermal stability, mechanical strength, and customization options.

Next, we’ll explore the various grades of PEEK offered by leading manufacturers and dive deeper into the specific advantages and applications of TECAPEEK PEEK material.

PEEK molecule structure

PEEK Applications and End Uses

PEEK, with its exceptional properties, finds a wide range of applications in various industries. Let’s explore some of its key applications and end uses:

Chemical Process Industry:

  • Compressor plates
  • Valve seats
  • Pump impellers
  • Thrust washers

Aerospace Industry:

  • Aircraft fairings
  • Radomes
  • Fuel valves
  • Ducting

Electrical Industry:

  • Wire coating
  • Semiconductor wafer carriers

Automotive Industry:

  • Clutch and gearbox components
  • Turbocharger impellers
  • Other automotive parts

Other Industries:

In addition to the above, PEEK finds applications in various other industries such as:

  • Food and beverage processing
  • Oil and gas
  • Energy
  • Medical

Medical Industry:

Due to its biocompatibility, PEEK is widely used in the medical industry for:

  • Surgical instruments
  • Short-term implants
  • Medical devices

Composite Materials:

PEEK is also used in the production of composite materials and various components for conveyor technics.

These are just a few examples of the diverse applications and end uses of PEEK in industries such as automotive, aerospace, medical, electrical, and more. The exceptional properties of PEEK make it a versatile material with limitless possibilities.

PEEK Applications and End Uses


In conclusion, PEEK (polyether ether ketone) is a highly versatile engineering thermoplastic with exceptional properties. The chemical formula of PEEK, (C19H12O3)n, contributes to its outstanding mechanical strength, heat resistance, chemical compatibility, and radiation resistance. PEEK is available in various forms and sizes, thanks to companies like TECAPEEK, which offer a comprehensive range of stock shapes and customized options.

PEEK has a wide range of applications in industries such as aerospace, automotive, medical, and electrical. Its superior performance and potential to replace metals make it a preferred choice in these sectors. The synthesis of PEEK involves a nucleophilic substitution reaction, resulting in a high molecular weight polymer with excellent properties. This thermoplastic material is suitable for various applications, including bearings, piston parts, pumps, HPLC columns, and biomedical components.

As the Asia-Pacific PEEK market continues to grow, PEEK’s advancements in medical applications and its potential as an environmentally-friendly alternative will create new opportunities in the industry. With its exceptional properties and wide range of applications, PEEK is set to play a crucial role in various sectors, offering durable and efficient solutions for complex engineering challenges.


What is the chemical formula of Polyether Ether Ketone (PEEK)?

The chemical formula of PEEK is (C19H12O3)n.

What are the properties of PEEK?

PEEK has excellent chemical compatibility, high heat resistance (up to 260°C), and exceptional mechanical strength.

What are the uses of PEEK?

PEEK is used in industries such as aerospace, automotive, medical, and electrical due to its physical properties and ability to replace metals.

How is PEEK synthesized?

PEEK is synthesized through a step-growth polymerization method using the potassium salt of hydroquinone and 4,4′-difluorobenzophenone.

What are some application examples of PEEK?

PEEK is used for insulators, connectors, gear wheels, sliding elements, compressor components, valves, surgical instrument parts, and drill heads, among others.

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