1. What is Teflon？

The full name of Teflon is polytetrafluoroethylene, which can also be referred to as PTFE, F4, etc.Teflon coating is the originator of non-stick coating. Teflon coated magnets have become one of the best surface treatments for magnets.It combines heat resistance, chemical inertness, excellent insulation stability and low friction. It has comprehensive advantages that other coatings cannot compete with.

2.Physical properties of coatings:

①Non-stick: Almost everything does not bond to Teflon coating. Even very thin coatings show very good non-stick properties.

②Temperature resistance: Teflon coating has good high temperature resistance and low temperature resistance. It can withstand high temperatures up to 300°C in a short period of time, and can be used continuously between 240°C and 260°C. It has a wide temperature range and can be used at -190~260℃. It can work at low temperatures without brittleness and at high temperatures without melting.

③Sliding property: Teflon coating has a low friction coefficient. The friction coefficient changes when the load slides, but the variation is only between 0.05-0.15.

④Moisture resistance: Teflon coating surface does not stick to water and oil. If there is a small amount of dirt stuck on, it can be removed by simply wiping it. Maintenance time is short, saving time and improving work efficiency.

⑤Insulation: The coating is not affected by the environment and frequency, the volume resistance can reach 1018 ohm·cm, the dielectric loss is small, and the breakdown voltage is high.

3.Chemical Properties of Coatings:

①Corrosion resistance: Teflon coating can withstand almost all strong acids, reducing agents and various organic solvents. It protects the magnets from any kind of chemical corrosion.

②Oxidation resistance: Even if the coating is exposed to the air for a long time, its surface and performance can remain unchanged.

③Flame retardancy: The material’s limiting oxygen index for combustion exceeds 90%, so it is extremely difficult to burn.

4.Teflon coated magnets

Based on these excellent characteristics, Teflon-coated magnets are widely used in various products in special use environments.

Neodymium magnets are susceptible to corrosion, especially in harsh or moisture-prone environments. The Teflon coating acts as a barrier, preventing moisture, chemicals, and contaminants from damaging the magnet’s performance and structural integrity. This enhanced corrosion resistance extends the life of the magnets and ensures consistent performance over the long term, even in challenging environmental conditions.

Teflon coating has good insulation compared to metal plating, and the size of magnets using Teflon coating will be smaller than that of electroplated magnets.

5.Conclusion

Teflon coating is a unique coating that has some characteristics that other coatings cannot match. Our company can provide magnets using Teflon coating.

If you are interested in our products, you can contact us for more information.

Contact us:Contact | HQ Magnet (hq-magnet.com)

learn more:Teflon Coating – YouTube