|A researcher at
the duPont Company Experimental Station one day in 1938 found a residue
at the exit port of a Freon Gas (Fluorinated Hydrocarbon) container.
Upon further examination he found that the white mass of material
has some unique properties. This was the birth of Teflon.
Fluorocarbons are among the more expensive plastics, but design engineers
have found them to be adaptable to a variety of requirements. They
offer a unique combination of heat resistance and low friction toogether
with good chemical and electrical properties. Fluorocarbons can be
used over a wide temperature range, from as low as 110 degrees F to
as high as 500 degrees F.
The most prominent fluorocarbon is TFE. It is inert to almost all
chemicals, cannot be dissolved, and exhibits no moisture absorption.
Typical applications would include chemical mixing rod bearings, containers
for corrosives, valve seats, balls, thrust washers, and seal rings.
In addition TFE has good electrical properties, including high arc
resistance. This gives it applications in high frequency insulation
and stand-off insulators, bus bars in chemical electro plating, coaxial
cable connectors, terminal insulators, transformers, capacitors, relays
and electrical push rods.