PTFE PROPERTIES
 

Non Stick:
Very few solid  substrates will permanently adhere  to a ptfe  finis
h.

 

 

Low coefficient of friction:
The co-efficient of friction of ptfe is generally in the range of 0.05 to 0.20 depending on the load, sliding speed and particular ptfe coating used.

 


Non wetting:
Since surfaces coated with ptfe are both oleo-phobic &  hydrophobic, they are not readily wet. They clean up more easily and thoroughly. In many coatings, surfaces are self cleaning.

 


Heat resistance:
ptfe Industrial coatings can operate continuously at temperature up to 290oC 1550oF & can be used for intermittent service up to 315oC/ 1600o F with adequate verification.

 

 

Unique electrical properties:
Over a wide range of frequencies ptfe has high dielectric strength, a low dissipation factor & very high surface resistivity.  By special techniques it can even be made electro conductive enough to be used as antistatic coating.

Cryogenic Stability:
ptfe Industrial coatings can withstand severe  temperature extremes without loss of physical properties. ptfe industrial coating may be considered for use at temperature as low as -270oC / 454oF.
Chemical Resistance:
ptfe is normally unaffected by chemical environments.  The only chemicals known to affect all  ptfe  industrial coatings are molten alkali metals & highly reactive fluorinating agents.
 

PTFE Properties

History

Polytetrafluoroethylene (PTFE) resin is in a class of paraffinic polymers that have some or all of the hydrogen replaced by fluoride. The original PTFE resin was first discovered on April 6, 1938 by Dr Roy J. Plunkett. While working at DuPont's Jackson Laboratory in New Jersey on another project, Dr. Plunkett found that a frozen, compressed amount of tetrafluoroethylene gas had polymerized into a waxy white solid substance, forming polytetrafluoroethylene (PTFE). DuPont registered the original PTFE resin under the trademark TeflonŽ in 1945, and the first commercial products were sold under this trademark in 1946. Interestingly, PTFE was produced on a limited scale in the early 1940s, and was used shortly thereafter by the Manhattan Project in containers for highly corrosive elements during uranium separation experiments.

PTFE Characteristics & Benefits

The extraordinary characteristics of PTFE make it the ideal choice in a wide range of products and applications. PTFE has a coefficient of friction that is one of the lowest of any material. PTFE is extremely abrasion resistant, making it adaptable to the harshest environments. In addition, PTFE can withstand a wide range of temperatures, from 260 Degrees Centigrade down to -270 Degrees Centigrade, and can even handle brief exposures at higher temperatures. PTFE also has excellent flame resistance due to its extremely high melting point, along with a very low rate of smoke generation and heat release. Another advantage of PTFE is that it is chemically inert and pure, and has no additional stabilizers, lubricants or plasticizers that would taint process fluids.

PTFE products have an extremely long service life, primarily due to PTFE retaining its original properties over a long period of time, even at extreme temperatures, in ultraviolet (UV) light, and when exposed to oils, oxidizing agents and solvents. PTFE also is extremely corrosion resistant, especially to acids, and harsh inorganic and organic chemicals. Additionally, the original properties PTFE remain the same even after extended time periods in water. Furthermore, PTFE is resistant to atmospheric aging in the form of discoloration, oxidation, and, as previously noted, is not affected by ultraviolet light.

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