The advantage of PTFE coatings (including Teflon) is the non-stick properties in the material, which suggests applications such as commercial bakeware have excellent non-stick / release properties and are a breeze to wash.
We now have designed a selection of PTFE coating systems with lots of benefits to suit most applications. The part the coating is to be utilized for along with the operating conditions will define the selection of the best coating for the task.
On this blog, we explore a number of the benefits in depth.
NON-STICK AND RELEASE
A PTFE coating placed on an important part will give excellent non-stick/release properties and is also very easy to scrub. This sort of coating is additionally excellent at preventing both cold and hot products from permanently staying with the substrate and thus is traditionally used from the cookware, confectionery, food processing and bakery industries. PTFE coatings will also be useful for non-stick in the packaging, heat sealing, moulding, automotive, aerospace, chemical and pharmaceutical industries.
NON-WETTING
PTFE surfaces are hydrophobic and oleophobic, will not readily wet. This permits the material to self-clean. For that semiconductor industry, this rentals are vital as it allows all chemical media to own off and be 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 as well as for short periods at +290°C. PTFE can be utilized 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 may 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 and is therefore ideal for shafts, bearing surfaces, moving mechanisms, stud bolts and fasteners. For really abrasion resistance and increased wear life, this kind of coating might be reinforced with the addition of fillers and also by combining having a metal sprayed base layer.
CORROSION AND CHEMICAL RESISTANCE
PTFE is inherently resistant against attack from most chemicals when along with other fluoropolymers for example FEP and PFA greatly enhances the lifetime of the component. PTFE applied being a surface coating will heighten the corrosion resistance in the component and will be also enhanced with the aid of primers, other pre-treatments including plating and phosphating. Stud bolts and fasteners, valves, pumps, pipe clamps and connectors all benefit from these types of coatings.
ELECTRICAL PROPERTIES
PTFE has a high dielectric strength, the lowest dissipation factor, insulating and high surface resistivity, giving protection and uses in lots of electrical applications. Our coatings can even be built 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 provides excellent bearing properties. Mating surfaces and rotating parts benefit from this coating that assist provide minimal maintenance downtime.
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