Donwell applies high-performance coatings which incorporate the following physical, electrical and chemical properties in varying degrees. Our engineering staff can assist customers in choosing the finish with the best combination of properties to meet the demands of their applications. Contact us today to discuss your application, or request a no-cost coating sample!
Very few solid substances will permanently adhere to a Teflon™ finish. And while tacky materials may show some adhesion, almost all substances release easily.
Since Teflon™ surfaces are both oleophobic and hydrophobic, they are not readily wet. Surfaces are more easily and thoroughly cleaned, and, in many cases, require little or no cleaning.
Unique Electrical Properties
Over a wide range of frequencies, Teflon™ has high dielectric strength, low dissipation factor and very high surface resistivity. By special techniques, it can even be made conductive enough to be used as an anti-static coating.
Low Coefficient of Friction
The coefficient of friction of Teflon™ is generally in the range of 0.05 to 0.20, depending on the load, sliding speed and particular Teflon™ finish used.
Heat Resistance and Cryogenic Stability
Many Teflon™ finishes will withstand severe temperature extremes without loss of physical properties. Teflon™ may be considered for use at temperatures as low as -270°C (-450°F).
There is no decomposition of PTFE below 205°C (400°F); insignificant decomposition between 205°C and 290°C (400°F and 550°F) which requires no special precautions. Between 290°C and 315°C (550°F and 600°F) intermittent service is possible with adequate ventilation.
Teflon™ is normally unaffected by chemical environments. However, certain Teflon™ finishes are permeable or have a lower resistance to attack. The only chemicals known to affect all Teflon™ finishes are the alkali metals and highly reactive fluorinating agents.
Several Teflon™ industrial coatings are FDA-compliant, including Silverstone® and Supra®. These finishes are commonly used for food processing and consumer-use applications.
Donwell Company is a Licensed Industrial Applicator of Teflon™ industrial coatings. Click here for more information about Teflon™.