Polyethylene Terephthalate (PET)

Last Updated: January 27, 2020

Definition - What does Polyethylene Terephthalate (PET) mean?

Polyethylene terephthalate (PET, PETE) refers to a chemical compound that is a form of thermoplastic polymer resin that is widely used as a fiber for clothing, thermoforming for manufacturing, and producing engineering resins. It is also used as a corrosion preventative coating.

Corrosionpedia explains Polyethylene Terephthalate (PET)

Polyethylene terephthalate (PET) acts as an anticorrosive coating when applied to carbon steel via the use of an industrial press. Empirically, PET has good adhesion on these substrates in comparison to traditional organic coatings.

The following desirable properties have been observed (via the use of scanning electron microscopy) with respect to the application of PET as a corrosion prevention substance on steel substrates:

  • Excellent coating layer uniformity
  • Free of cracks and defects
  • No susceptibility of PTE to negative effects by the deposition process
  • A thin application of 65 µm is required for a high-performance coating
  • No effect of PET's electrochemical behavior with respect to increased exposure time to an acidic electrolyte
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