Although we usually associate the word Teflon with a non stick surface, Teflon coatings actually go beyond providing a non-stick surface. In the industrial and engineering worlds, Teflon coatings are very important to machines and products because it either makes or breaks them.
There are many different types of Teflon coasting and below are some of the most common types used.
The most popular type of Teflon coating is the Teflon PTFE, which is short for poly tetrafluoroethylene. What makes up Teflon PTFE, which is a non-stick coating, is a primer and then a top coat. There are many types of fluoropolymers but PTFE can handle the highest temperatures, reaching all the way to 500 degrees Fahrenheit. The coefficient of friction of PTFE is very low and this is one of its other advantages. It is also resistant to abrasions and many types of chemicals. Teflon PTFE comes only in liquid form and it water-based, which is a downside to this type of Teflon coating.
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Teflon FEP also known as fluorinated ethylene propylene copolymer, is the kind of film that is non-porous. During baking, this type of coating melts and flows. FEP is resistant to most commonly used chemicals and it is a very non-stick type of coating. It also comes in powder form and as a water based liquid.
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Teflon PFA is quite similar to FEP is some ways. The difference is that PFA can tolerate a higher temperature during continuous use going up to 500 degrees Fahrenheit. PFA or perfluoroalkocy can handle a lot more than FEP or PTFE because it is tougher than both. PFA can also be used in powder or as water based liquid form.
Teflon also sells tefzel ETFE which is the toughest fluoropolymer available today. This type of coating is not completely fluorinated which is important in some application. It is only in powder form that you can buy this Teflon coating.
Teflon One Coat is ideal if you are looking for a Teflon coating that is solvent based rather than water based. Since this type of coasting has been blended, it is extremely tough and resistant to abrasions. Another benefit of one coat is that there are cases when it works well with smooth metal surfaces, unlike others that require a rough surface in order to help it stick.
In situations that involve a lot of pressure and high velocities, Teflon Dry Lubricant is the best choice. It is the same as one coat because it is solvent based but differently designed to work well under high amounts of pressure or velocity.
You can apply Teflon coatings on aluminum, steel, steel alloys, stainless steel, brass, glass, rubber, fiberglass, and even plastic.