FEP Non Stick Coating

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FEP Non Stick Coating
Dec 20,2013

FEP Resists Wetting Better than This Waxed Car in Rain 
FEP non stick coating resins (fluorinated ethylene propylene) such as Dupont FEP are produced by co-polymerization of tetrafluoroethylene and hexafluoropropylene and have predominantly linear chains.

FEP resists wetting far better than this waxed car caught in the rain. For you, that's icing on the cake.

With a crystalline melting point of 554 degrees Fahrenheit, the FEP non stick coating has mechanical properties more suitable from cryogenic to about 400 degrees Fahrenheit. It is a soft plastic with lower tensile strength, wear resistance, and creep resistance than many other engineering plastics.

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The FEP non stick coating exists as an array of fluoroplastics, primarily for enhanced toughness or abrasion resistance, higher temperature stability, but can include co-polymers for higher release and low friction.

FEP non stick coating differs from other Dupont Teflon or PTFE (polytetrafluoroethylene) resins in that it is melt-processable. Much like PFA, though with lower heat stability, the FEP non stick coating has the capability of forming continuous, monolithic films. This is especially important in applications requiring permeation strength, minimal micro porosity or improved base metal isolation.

The FEP non stick coating is highly resistant to oxidation and action of chemicals including strong acids, alkali, oxidizing agents, nuclear radiation, UV rays, and ozone.

Absorption rates are comparatively lower with the FEP non stick coating than almost all others. It absorbs practically no common acids or bases at temperatures as high as 400 degrees Fahrenheit. Weight increases are generally less than 1% when exposed at elevated temperatures for long periods. Aqueous solutions are absorbed little. Moisture absorption is typically less than 0.01% at ambient temperature and pressure.

Gases and vapors, too, show low permeation rates with the FEP non stick coating than for other fluoroplastics. In general, permeation increases with temperature, pressure, and surface area contact, but decreases with increased thickness.

Mechanical properties include, but are not limited to, flexibility at low temperatures, stability at high temperatures, low coefficient of friction, dielectric strength, corrosion resistance, and non stick (release).

The FEP non stick coating comes from relatively newer fluorocarbon resin products. It is especially important for designers and end-users requiring higher rates of release (non stick) performance or chemical stability.

Tensile strength, stiffness and flexural modulus of FEP coatings are outstanding. Both at cryogenic and higher continuous temperatures (400 F).

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