The main benefit of PTFE coatings (such as Teflon) is the non-stick properties from the material, meaning applications such as commercial bakeware have excellent non-stick / release properties and therefore are quite simple to completely clean.
We have created a selection of PTFE coating systems with many different advantages to suit most applications. The part that the coating will be useful for as well as the operating conditions will define selecting the right coating to do the job.
In this blog, we explore a few of the benefits in more detail.
NON-STICK AND RELEASE
A PTFE coating placed on an element will give excellent non-stick/release properties and it is a breeze to completely clean. This sort of coating is additionally excellent at preventing both cold and warm products from permanently staying with the substrate and so is widely used in the cookware, confectionery, food processing and bakery industries. PTFE coatings are also employed for non-stick inside the packaging, heat sealing, moulding, automotive, aerospace, chemical and pharmaceutical industries.
NON-WETTING
PTFE surfaces are hydrophobic and oleophobic, and does not readily wet. This enables the material to self-clean. For your semiconductor industry, this rentals are vital as it allows all chemical media to perform off and become collected.
TEMPERATURE RESISTANCE
PTFE coatings can service arduous application conditions involving extremes of temperature. They are able to remain stable at advanced temperatures of +260°C as well as short periods at +290°C. PTFE can be used on extrusion dies and sealing of plastic/elastomers where other treatments may degrade or cause clogging of molten material. These coatings may also perform at cryogenic temperatures and can remain stable at -270°C.
LOW FRICTION AND ABRASION RESISTANCE
PTFE coated surfaces reduce friction which enable it to achieve suprisingly low coefficients of friction, typically from about 0.04 to 0.15. Where oils and grease evaporate at elevated temperatures PTFE remains and is also therefore ideal for shafts, bearing surfaces, moving mechanisms, stud bolts and fasteners. For really abrasion resistance and increased wear life, such a coating can be reinforced with the help of fillers and also combining which has a metal sprayed first layer.
CORROSION AND CHEMICAL RESISTANCE
PTFE is inherently proof against attack from most chemicals then when coupled with other fluoropolymers such as FEP and PFA greatly increases the life of the component. PTFE applied as being a surface coating will heighten the corrosion resistance in the component and will even be enhanced by using primers, other pre-treatments like plating and phosphating. Stud bolts and fasteners, valves, pumps, pipe clamps and connectors all make use of these kinds of coatings.
ELECTRICAL PROPERTIES
PTFE features a high dielectric strength, the lowest dissipation factor, insulating and surface resistivity, giving protection and uses in many electrical applications. Our coatings can be built to become conductive and used as an antistatic coating. Light fittings, connectors, cable guides and portable electrical equipment all reap the benefits of PTFE.
ANTI-GALLING
PTFE coatings prevent galling and provide excellent bearing properties. Mating surfaces and rotating parts benefit from this coating that assist provide minimal maintenance downtime.
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