The main benefit of PTFE coatings (like Teflon) may be the non-stick properties from the material, this means applications such as commercial bakeware have excellent non-stick / release properties and so are super easy to completely clean.
We now have developed a range of PTFE coating systems with a lot of advantages of suit most applications. The part that this coating will be utilized for as well as the operating conditions will define picking a the best coating for the task.
In this blog, we explore a few of the benefits in depth.
NON-STICK AND RELEASE
A PTFE coating applied to a component will offer excellent non-stick/release properties and it is super easy to completely clean. This kind of coating is additionally excellent at preventing both cold and hot products from permanently sticking to the substrate and thus is widely used in the cookware, confectionery, food processing and bakery industries. PTFE coatings are also employed for non-stick from the packaging, heat sealing, moulding, automotive, aerospace, chemical and pharmaceutical industries.
NON-WETTING
PTFE surfaces are hydrophobic and oleophobic, and will not readily wet. This permits the material to self-clean. For your semiconductor industry, this property is vital because it allows all chemical media to run off and stay collected.
TEMPERATURE RESISTANCE
PTFE coatings can service arduous application conditions involving extremes of temperature. They’re able to remain stable at advanced temperatures of +260°C and for short periods at +290°C. PTFE works extremely well on extrusion dies and sealing of plastic/elastomers where anything else may degrade or cause clogging of molten material. These coatings also can perform at cryogenic temperatures and will remain stable at -270°C.
LOW FRICTION AND ABRASION RESISTANCE
PTFE coated surfaces reduce friction which enable it to achieve minimal coefficients of friction, typically from about 0.04 to 0.15. Where oils and grease evaporate at elevated temperatures PTFE remains and it is therefore perfect for shafts, bearing surfaces, moving mechanisms, stud bolts and fasteners. For added abrasion resistance and increased wear life, this type of coating may be reinforced by building fillers and through combining with a metal sprayed base layer.
CORROSION AND CHEMICAL RESISTANCE
PTFE is inherently resistant to attack from most chemicals and when combined with other fluoropolymers including FEP and PFA greatly enhances the duration of the component. PTFE applied like a surface coating will raise the corrosion resistance of the component and may also be enhanced with the aid of primers, other pre-treatments like plating and phosphating. Stud bolts and fasteners, valves, pumps, pipe clamps and connectors all take advantage of most of these coatings.
ELECTRICAL PROPERTIES
PTFE has a high dielectric strength, the lowest dissipation factor, insulating and high surface resistivity, giving protection and uses in numerous electrical applications. Our coatings can also be built to become conductive and utilized as an antistatic coating. Light fittings, connectors, cable guides and portable electrical equipment all take advantage of PTFE.
ANTI-GALLING
PTFE coatings prevent galling and provide excellent bearing properties. Mating surfaces and rotating parts make use of this coating and help provide minimal maintenance downtime.
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