![]() ![]() ![]() This inherent characteristic can be compensated for through reinforcements and chemistry modifications. PEEK’s glass transition temperature or softening temperatures is close to 300 degrees Fahrenheit. It is useful at temperatures up to nearly 500 degrees Fahrenheit long term and far higher short term, which is well beyond what most polymers are capable of. Excellent thermal properties – Unfilled PEEK offers high strength and excellent resistance to high temperatures, and will not melt until it reaches about 650 degrees Fahrenheit.What is it about PEEK that makes it a natural fit for so many engineering applications? Regardless of the specific chemistry it is the polyketone chemical structure that makes PEEK so formidable in so many environments. This PAEK family covers a number of different compositions with different ratios of ether groups to ketone groups, the most common of which is PEEK. Put simply, it refers to the chemical structure of the polymer although most polymer scientists identify PEEK as being part of the broader family of ketone polymers called polyarylether ketones (PAEKs). PEEK is short for polyether ether ketone, which doesn’t make sense to many other than those with a strong chemistry background. Today Solvay is the only US-based producer of PEEK resin. Name recognition still favors the Victrex brands but others led by Solvay’s Ketaspire PEEK are gaining both volume and market share each year. Others including Solvay entered PEEK resin production in the early 2000s after Victrex PLC’s patent rights expired so today end users and specifiers have no shortage of PEEK resin grades from which to choose. Glass and carbon reinforced grades are among the strongest of all thermoplastics at room temperature and unfilled grades are highly resistant to some of the most chemically aggressive environments including high-pressure steam.įirst introduced by Victrex PLC, then ICI (Imperial Chemical Industries) in the early 1980s it has been gaining use for nearly 40 years. It is known for its impressive durability in punishing environments. Higher lubricity than Virgin PEEK.PEEK is a workhorse – perhaps the closest to a perfect material that is utilized in a wide range of industries and in a variety of applications. ![]() Low coefficient of friction and suitable for high wear applications Low coefficient of friction and suitable for many extremely corrosive applications Particularly suitable for elevated temperatures and high load situations. These find application in oil & gas as well as automotive industries.Įxcellent chemical resistance and mechanical properties at elevated temperatures High tensile strength and dimensional stabilityįDA approved Most effective as a seal, backup ring, V-packing or Chevron seal Used as rotary seals in Nuclear applications Seals made with precise grooves that allow them to be stacked on one another and used as a single assembly. PEEK finds acceptance specifically in applications with high pressures and temperatures. The combination of PTFE and PEEK is a powerful one.Ī number of different thermoplastic materials are used in this application, including PTFE, Delrin and UHMWPE. We have developed compounded grades of PTFE with PEEK to cater to the rotary shaft seals’ market. PEEK is hard enough to withstand the extensive wear induced within the piston, but not hard enough to damage the metal componentsīall valve seats show a predominant preference for PTFE, as they require a soft material that yields easily to the shape of the ball valve. Piston rings are used primarily to aid wear absorption on the outer diameter of the piston shaft.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |