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polyetherimide
Sign in to savethumb|PEI powder coating|powder-coated build plate on a [[Bambu Lab A1 mini FFF 3D printer]] Polyetherimide (PEI; branded as Ultem) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK. When comparing PEI to PEEK, the former is cheaper but has lower impact strength and a tighter temperature range.
Key facts
- Material.name
- Polyetherimide
- Material.density
- 1.27 g/cc
- Material.water_absorption_24h
- 0.25%
- Material.glass_transition
- 215 C
- Material.heat_deflection_temp
- 210 C
- Material.heat_deflection_temp_note
- at 0.46 MPa / 66 psi
- Material.vicat
- 220 C
- Material.tensile_strength
- 115 MPa
- Material.elongation
- 60-80%
- Material.izod_impact_strength
- 25-60 J/m
- Material.upper_working_temp
- 375 C
- Material.lower_working_temp
- 365 C
- Material.footnotes
- Data via Sastri et al., 2014.
via Wikipedia infobox
Article
4 sectionsContents
- Structure
- Properties
- Production
- References
thumb|PEI powder coating|powder-coated build plate on a [[Bambu Lab A1 mini FFF 3D printer]] Polyetherimide (PEI; branded as Ultem) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK. When comparing PEI to PEEK, the former is cheaper but has lower impact strength and a tighter temperature range.
PEI plastics were first introduced into the market by General Electric (GE) in 1982 under the trade name Ultem resulting from the work of J.G. Wirth's research team in the early 1970s.