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Thermoplastic Olefin (TPO)

Last updated: July 19, 2024

What Does Thermoplastic Olefin (TPO) Mean?

A thermoplastic olefin is a chemical substance that is composed of a high molecular weight polyethylene, rubber and a reinforcing filler. This mixture contributes to the strong corrosion-resistant nature of thermoplastic olefins, which make them ideal for use in corrosion prevention. In this capacity they are typically used as coatings and liners.

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Corrosionpedia Explains Thermoplastic Olefin (TPO)

Thermoplastic olefins are often composed of liners of one of the following: calcium carbonate, carbon fiber or talc. This results in a highly durable thermoplastic that is scratch resistant, UV resistant, impact resistant and flexible for a wide range of paints and finishes. Thermoplastic olefins possess the following desirable qualities that make them well suited for outdoor and/or harsh chemical environments:

  • Recyclable
  • Acts as an amorphous or a crystalline polymer
  • Flame retardant
  • Can be colored, painted or polished with a finish
  • Durable and temperature resistant, with excellent weatherability
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