Today, the name Teflon is mostly associated with the term
‘non-stick’, however Teflon coatings have many other characteristics besides
their non-stick properties. In the industrial and engineering circles, Teflon
coatings are regarded as important contributing factors to the success or
failure of a product or a machine. Six Teflon coatings are commonly used in the
day-to-day applications.
Teflon PTFE is the most popular type of Teflon coating; it
is poly tetrafluoroethylene in full. It is a non-stick type of coating that is
made up of a primer and a top coat. This is also the only type of fluoropolymer
that can withstand high temperatures. It can handle temperatures as high as 500
degrees Fahrenheit. The other benefit that you get from Teflon PTFE is the very
low friction coefficient. It is also resistant to several chemical and physical
process including abrasion. The only disadvantage of this coating is that it is
only available in liquid form and is water-based. Another coating is the Teflon
FEP, which is fluorinated ethylene propylene copolymer in full. This is the
ideal option in most scenarios. It creates a non-porous film when applied. When
baking is taking place, this coat melts and flows. It is very resistant to most
of the chemicals that are commonly and has a high non-stick property. It is
available in both powder and liquid form. The liquid form is water-based. The
third type of most commonly used Teflon coating is Teflon PFA, this has many
similarities to the FEP and is also able to withstand high temperatures to as
high as 500 degrees Fahrenheit. PFA also known as perfluoroalkoxy is tougher
than PTFE and FEP, this means that it is higher in handling capabilities than
the two coatings. It also comes in both power and liquid form like the FEP.
The toughest fluoropolymer is probably Tefzel ETFE, which is
sold by Teflon but under the brand name Tefzel. It is an incompletely
fluorinated type of coating that is crucial in some applications. However, it
is only available in powder form. The Teflon One Coat is the best choice when
you are looking for a solvent-based coating rather than a water-based coating.
It has been blended and displays extreme resistance and toughness when used.
The other benefit is that it can work with metal surfaces that are smooth
unlike others that only work on rough surfaces. The Teflon Dry Lubricant is the
last one of Teflon coatings that is ideal in conditions of high pressures and velocities.
It is solvent-based.
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