The advantage of PTFE coatings (for example Teflon) could be the non-stick properties from the material, this means applications including commercial bakeware have excellent non-stick / release properties and are quite simple to clean.
We’ve got created a range of PTFE coating systems with many different benefits to suit most applications. The function the coating is usually to be utilized for and the operating conditions will define selecting the right coating for the task.
In this blog, we explore some of the benefits in depth.
NON-STICK AND RELEASE
A PTFE coating applied to an element can give excellent non-stick/release properties and is very easy to scrub. This sort of coating can also be excellent at preventing both cold and warm products from permanently staying with the substrate and thus is trusted in the cookware, confectionery, food processing and bakery industries. PTFE coatings are also useful for non-stick within the packaging, heat sealing, moulding, automotive, aerospace, chemical and pharmaceutical industries.
NON-WETTING
PTFE surfaces are hydrophobic and oleophobic, will not readily wet. This enables the material to self-clean. For the semiconductor industry, this residence is vital because it allows all chemical media to run off and be 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 and then for short periods at +290°C. PTFE works extremely well on extrusion dies and sealing of plastic/elastomers where other remedies may degrade or cause clogging of molten material. These coatings can also perform at cryogenic temperatures and will remain stable at -270°C.
LOW FRICTION AND ABRASION RESISTANCE
PTFE coated surfaces reduce friction and may achieve suprisingly low coefficients of friction, typically from about 0.04 to 0.15. Where oils and grease evaporate at elevated temperatures PTFE remains which is therefore well suited for shafts, bearing surfaces, moving mechanisms, stud bolts and fasteners. For additional abrasion resistance and increased wear life, this kind of coating could be reinforced by having fillers and through combining having a metal sprayed lower layer.
CORROSION AND CHEMICAL RESISTANCE
PTFE is inherently resistant against attack from most chemicals so when coupled with other fluoropolymers for example FEP and PFA greatly increases the duration of the component. PTFE applied like a surface coating will increase the corrosion resistance of the component and can even be enhanced with the use of primers, other pre-treatments including plating and phosphating. Stud bolts and fasteners, valves, pumps, pipe clamps and connectors all benefit from these kind of coatings.
ELECTRICAL PROPERTIES
PTFE has a high dielectric strength, a decreased dissipation factor, insulating as well as surface resistivity, giving protection and uses in numerous electrical applications. Our coatings can be designed to become conductive and used as an antistatic coating. Light fittings, connectors, cable guides and portable electrical equipment all benefit from PTFE.
ANTI-GALLING
PTFE coatings prevent galling and provide excellent bearing properties. Mating surfaces and rotating parts take advantage of this coating which help provide minimal maintenance downtime.
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