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Using PTFE Micropowders to Manufacture Thermoplastic Parts that are as Non-stick as a Frying Pan

Reading Time: 2 minutes

The very same chemicals that keep foods from sticking to frying pans can be used to enhance any thermoplastic part or component. Thermoplastic resins made with powerful polytetrafluoroethylene (PTFE) micropowders provide excellent non-stick properties. 

The Power of PTFE

PTFE micropowders are synthetic fluoropolymers that act as lubricants in thermoplastic base resins to improve their surface wear characteristics. The molecular weight and particle size of Fluon® PTFE micropowders can be custom-tailored to yield optimal application-specific improvements for wear, friction and pressure-velocity.

PTFE Compound

In the above diagram of a PTFE compound’s chemical structure, the fluorine atoms surround the carbon atoms, providing:

  • Heat resistance
  • Electrical resistance
  • Chemical resistance
  • Low coefficient of friction
  • Non-stick characteristics

Ideal Applications for PTFE Micropowders

PTFE filled thermoplastics are recommended for applications requiring low friction losses, non-stick properties and maximum wear resistance:

  • Gears
  • Bearings
  • Wear plates
  • Instrument components
  • Liners for control equipment
  • Sliding contact applications for domestic appliances and automotive areas

Is PTFE a Thermoplastic or Thermoset?

You may be wondering why PTFE is classified as a thermoplastic since it has heat resistant properties. It is true that a thermoplastic turns into a liquid at higher temperatures and can easily be remolded, while thermosets cure with an irreversible bond that is unaffected by heat.

However, PTFE is classified as a thermoplastic because its melt viscosity is so high that it will only melt and soften under extreme temperatures. It’s a linear polymer chain and a melt transition point can be detected at 327 °C (620.6 °F). Although most non-stick pans will never reach the PTFE melt point on a stove top, they will degrade if they are put in an oven over 260 °C (500 °F).

Other Applications for PTFE Micropowders

These strong fluoropolymers are very useful materials for more than just thermoplastics. There are thousands of applications, from flexographic printing inks to food packaging, that use their unique combination of properties.

  • Anti-scuff agent for ink and paint
  • Food contact coatings
  • Ski wax
  • Grease thickener
  • Oil thickener
  • Elastomers
  • Aerosols and solvents
  • Dry lubricants

To learn more about Fluon PTFE micropowders, click here.

About the Author

Kristin Carlin is AGC's inside sales & marketing leader and part of the business development group. She has been with AGC Chemicals Americas for over 20 years and holds an MBA from Penn State University.

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