PEEK is a high-performance plastic used in a wide variety of industrial applications, such as in the automotive, petroleum, and chemical industries. PEEK has also proven its worth in medicine for several years, including as a material for dental prostheses.
The term PEEK is an abbreviation for Polyetheretherketone . PEEK is a high-temperature polymer characterized in particular by high temperature resistance , very good mechanical strength , and good chemical resistance.
Why is PEEK for the coating of surfaces used?
Compared to conventional coating materials such as fluoropolymers , PEEK can withstand higher temperatures without losing its mechanical and physical properties. It is a very strong polymer ; its resistance to abrasion or wear is significantly higher than that of fluoropolymers.
The excellent mechanical properties are further confirmed by outstanding creep resistance and fatigue resistance . In addition, PEEK exhibits excellent hydrolysis and chemical resistance (though not resistant to sulfuric and concentrated nitric acid). Low flammability and the optional electrical conductivity round out this high-tech plastic, making it a perfect basis for producing functional coating systems for industrial applications.
Development Non-stick coatings with PEEK
Through intensive research and development, the Rhenotherm team has succeeded in combining the positive properties of PEEK polymers with the excellent non-stick properties of fluoropolymers . The result is innovative non-stick coatings based on PEEK.
The PEEK coating includes a special layer structure with the high-performance plastic PEEK, which is applied directly to the surface of the workpiece to be coated in combination with fluoropolymers and possibly other additives.
Excerpt PEEK coating systems
Non-stick coating based on PEEK with additive, offers a good non-stick effect, layer thickness 30 - 150 µm, scratch-resistant up to a temperature of 270 ° C
Non-stick coating based on PEEK with fluoropolymer, is characterized by an excellent non-stick effect, layer thickness 30 - 150 µm, scratch-resistant up to a temperature load of 230 ° C
Non-stick coating based on PEEK with fluoropolymer, is characterized by a special hardness and very good non-stick effect, layer thickness 30 - 150 µm, scratch-resistant up to a temperature load of 270 ° C
Reliable dry lubrication based on PEEK with additive, layer thickness 30 – 60 µm, scratch-resistant up to a temperature load of 270 °C.
All PEEK-based coating systems are dark brown to black in color , FDA- approved for food contact , and chemically resistant (except to sulfuric and concentrated nitric acid). If required, all systems can also be provided with electrical conductivity (in the range of < 10⁶ ohms).
Benefits of non-stick coatings with PEEK
Compared to conventional non-stick coatings, Rhenotherm's PEEK coating systems are characterized by:
- improved scratch resistance,
- longer lifetime,
- higher temperature resistance,
- better water vapor tightness,
- improved Corrosion Protection.
Application examples
Non-stick coatings based on PEEK are particularly suitable for the food, adhesive, rubber, and paint processing industries . They are especially suitable for components or surfaces exposed to relatively high temperatures and where food, adhesives, or molten plastics should not adhere.
- Sealing strips or sealing plates
- Lötwellenrahmen
- Sliding plates or slide rails
selection the appropriate PEEK coating
To achieve the best possible performance, our coatings are tailored to your specific application. In addition to the systems listed here, further combination systems are possible!
Before your components are coated at our facility, our qualified team will provide you with comprehensive advice and work with you to select the most suitable coating system for your application. Cost-effective sample coating of your components is also available.