types of teflon^® coating

Nonstick

Very few solid substances will permanently adhere to a Teflon® finish. Although tacky materials may show some adhesion, almost all substances release easily.

Low Coefficient of Friction

The CoF of Teflon® coatings is generally in the range of 0.05 to 0.20, depending on the load, sliding speed, and the particular Teflon® coating used.

Non-wetting

Since surfaces coated with Teflon® are both oleophobic and hydrophobic, they are not readily wetted. Cleanup is easier and more thorough and, in many cases, surfaces are self-cleaning.

Heat Resistance

Teflon® industrial coatings can operate continuously at temperatures up to 260°C.

Unique Electrical Properties

Over a wide range of frequencies, Teflon® coatings have high dielectric strength, low dissipation factor, and very high surface resistivity. By special techniques, these non-conductive coatings can be made electroconductive enough to be used as a static dissipative or conductive coating.

Cryogenic Stability

Many Teflon® industrial coatings withstand severe temperature extremes without loss of physical properties. Teflon® industrial coatings may used at temperatures as low as -270°C.

Chemical Resistance

Teflon® coatings are normally unaffected by chemical environments. The only chemicals known to affect all Teflon® industrial coatings are molten alkali metals and highly reactive fluorinating agents.

1. Teflon® PTFE

PTFE (polytetrafluoroethylene) nonstick coatings are usually two-coat (primer/topcoat) systems. These products have the highest operating temperature of any fluoropolymer (260°C), an extremely low coefficient of friction, good abrasion resistance, and good chemical resistance. PTFE is available only in water-based liquid form.

2. Teflon® FEP

FEP (fluorinated ethylene propylene copolymer) non-stick coatings melt and flow during baking to provide nonporous films. These Teflon® coatings provide excellent chemical resistance. In addition to low friction, FEP coatings have excellent nonstick properties. Maximum use temperature is typically 200°C. FEP is available in water-based liquid and powder forms.

3. Teflon® PFA

Like FEP, PFA (perfluoroalkoxy) nonstick coatings melt and flow during baking to provide nonporous films. PFA offers the additional benefits of higher continuous use temperature (260°C), higher film thicknesses and greater toughness than PTFE or FEP. This combination of properties makes PFA an excellent choice for a wide variety of uses, especially those involving chemical resistance. PFA is available in both water-based liquid and powder forms.

4. Tefzel® ETFE

ETFE is a copolymer of ethylene and tetrafluoroethylene and is also sold under the Tefzel® trademark. Although not fully fluorinated, ETFE has excellent chemical resistance and can operate continuously at 150°C. This resin is the toughest of the fluoropolymers and can be applied at film builds up to 1000 microns to provide a highly durable finish. ETFE is available in powder form.

5. Teflon® One Coat

These solvent-based liquid coatings are formulated with special blends of fluoropolymers and other high-performance resins to improve toughness and abrasion resistance. Because the film components stratify during baking, most of the fluoropolymer properties (such as low friction and nonstick character) are retained. The resins provide adhesion and abrasion resistance. These products can sometimes be applied to smooth, clean metal. Bake requirements vary, depending on the specific coating.

6. Teflon® Dry Lubricant

Dry lubricant coatings are special versions of Teflon® technology designed to provide lubrication under high-pressure/velocity (PV) conditions. These products are solvent-based, one-coat systems.

For more information please complete our online form and we will get back to you as soon as possible.

Advantages of Teflon^® coating:

• Unaffected by almost all chemicals
• Continuous use at high temperatures
• Slippery non-stick surface
• Outstanding dielectric properties
• Improved resistance to cold flow or creep
• Reduction in wear and friction
• Improved dimensional stability
• Increased stiffness and surface hardness

With a typical 5 to 7 working day turnaround and the option of weekend and Bank Holiday working, our commitment to serving you is unrivaled. So if you have a coating need please call or email us – we’ll always give you the best coating solution advice. Accredited to ISO 9001:2008, ISO 14001:2004 and a part of the world renowned Aalberts Group.