PTFE Coatings

Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene (CF2CF2) that finds numerous applications. It is a thermosetting plastic with a high melting point that is used to produce ‘nonstick’ surfaces on pans and to coat bearings. The most well known brand name of PTFE is Teflon by DuPont Co.

PTFE is a fluorocarbon solid, as it is a high-molecular-weight compound consisting wholly of carbon and fluorine. PTFE is hydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons demonstrate mitigated London dispersion forces due to the high electronegativity of fluorine. PTFE has one of the lowest coefficients of friction against any solid.

PTFE is used as a non-stick coating for pans and other cookware. It is very non-reactive, partly because of the strength of carbon–fluorine bonds, and so it is often used in containers and pipework for reactive and corrosive chemicals. Where used as a lubricant, PTFE reduces friction, wear, and energy consumption of machinery.

Category: Dry Film Coatings