Coating Solutions
PTFE coating solutions are as varied as the problems themselves. Selecting an appropriate low friction coating for a specific industrial application generally can be a challenging task, however, with our assistance we can take out some of the guess work. In the case of fretting conditions, numerous experiments have been carried out by the manufacturers to establish the optimum formulation for most applications. Teflon® and Xylan® fluoropolymer materials offer opportunities to resolve many arising from products and processes. The first and most obvious requirement is for a Non-stick coating. Very few solid substances will permanently adhere to a fluoropolymer finish, although tacky materials may show some adhesion, almost all substances release easily.
Low friction coatings, the coefficient of friction of Teflon and Xylan coatings are generally in the range of 0.05 to 0.20, depending upon the load, sliding speed and the particular Teflon® or Xylan® fluoropolymer applied. Non-wetting, since surfaces coated with Teflon® or Xylan® are both oleophobic and hydrophobic, they are not readily wetted. Clean-up is easier and more thorough in many cases, surfaces are self-cleaning.
Teflon® and Xylan® industrial coatings can operate continuously at temperatures up to 260°C/500°F. Many coatings have cryogenic stability and many Teflon® and Xylan® can withstand severe temperature extremes without loss of physical properties. Such industrial coatings may be used at temperatures as low as -270°/-454°F. The unique qualities of these coatings extend to their electrical properties over a wide range of frequencies. Some coatings have a high dielectric strength, low dissipation factor and a very high surface resistivity. Some techniques permit the coatings to be electro conductive, enough to be used as an anti-static coating.
Chemical resistance of some Teflon® and Xylan® industrial coatings are normally unaffected by chemical environments. The only chemicals known to affect such industrial coatings are molten alkali metals and highly reactive fluorinating agents. The performance of both Teflon and Xylan coatings makes them the natural choice for many industrial uses. Such coatings offer the designer /or process engineer a range of industrial coatings that enables the ideal combination of properties to suit the particular working environment.