PEEK is a temperature-resistant engineered thermoplastic that performs well under exposure to high temperatures and chemical environments. This material’s ability to retain its physical properties and withstand temperatures up to 480 degrees F makes it a highly valuable material that is suitable for a variety of uses including stainless-steel replacement in harsh environments. It is a lightweight alternative to steel and aluminum and has high-wear resistance without lubrication.
PTFE is a crystalline polymer with a melting point of about 621° F (327° C). Density is 2.13 to 2.19 gm/cc. PTFE has exceptional resistance to chemicals. Its dielectric constant (2.1) and loss factor are low and stable across wide temperature and frequency range. PTFE has useful mechanical properties from cryogenic temperatures at 500° F (280° C) continuous service temperatures. Its coefficient of friction is lower than almost any other material. It also has a high oxygen level.
Comparison of PEEK and Polymer PTFE/FEP Property Values
Material Applications：
* PEEK: Bearings;Pumps;Piston Parts;Cable Insulation.* PTFE:Cabling solutions;Non lubricated bearings;O-rings;Seals;Capacitors;Semiconductor manufacturing;High temperature electrical parts;Gaskets;Valve components.
Material Properties:
* PEEK:High abrasion resistance;Low moisture absorption;Outstanding chemical resistance;Low coefficient of friction;Excellent wear characteristics;Machinability.* PTFE:Excellent dielectric properties;Inertness to most chemicals;High heat and chemical resistance;Very low coeffiecient of friction;Excellent radiation resistance;Zero moisture absorption;Relatively insensitive to power frequency;Machinability.
Post time: Mar-14-2018