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Fluorinated Ethylene Propylene (FEP)

Last updated: August 13, 2019

What Does Fluorinated Ethylene Propylene (FEP) Mean?

Fluorinated ethylene propylene (FEP) refers to a chemical substance composed of hexafluoropropylene and tetrafluoroethylene that have been linked to form a copolymer. FEP is a widely used corrosion prevention coating for metallic surfaces due to its advantageous properties of both non-reactivity and low friction.

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Corrosionpedia Explains Fluorinated Ethylene Propylene (FEP)

The molecular structure of FEP as shown below depicts the long chain molecular bonds that give fluorinated ethylene propylene its key features, which includes:

  • Excellent thermal stability
  • Non-reactivity
  • Non-stick texture
  • High UV ray transparency and transmittance
  • Low refractive index, low light reflection
  • Nonporous
  • Excellent resistance to ozone
  • Low dielectric constant


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Preventative CoatingsSubstancesPaints and Plastics CoatingsCorrosion Prevention SubstanceCorrosion Prevention Substance CharacteristicsAbrasion ProtectionChemical CompoundCoatings

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