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Polyetherimide (PEI)

Polyetherimide (PEI) is an amorphus high temperature plastic with a glass transition temperature of 215 C. The polyetherimide is in natural form yellow transparent. The properties are almost identical to PES. PEI has better mechanical properties, UV resistance and lower smoke emission than PES. But the temperature properties and the chemical and hydrolysis resistance are slightly better at PES.

PEI Properties

  • Amorphous structure with a glass transition temperature of 215 C
  • Good creep properties
  • Good hydrolysis resistance
  • Good chemical resistance
  • High temperature resistance
  • Flame retardant without any additives
  • Low uptake of microwaves
  • Dimonsions stable
  • Low smoke emission


Our partner LEHVOSS Group product LUVOCOM® high-performance compounds offer great solutions. Discover more about their made-to-measure materials with application-specific modifications for sophisticated uses.

PEI applications airplane
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