Thermoplastic Olefin (TPO)

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Definition - 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.

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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