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پلیاترایمید
Also known as PEI
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.
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