Polyetherimide (PEI) is a high-performance engineering thermoplastic known for its excellent thermal stability, dimensional consistency, and mechanical strength at elevated temperatures. It is widely used in aerospace, automotive, electronics, and medical device industries where components must withstand demanding thermal and chemical environments while maintaining structural integrity. Engineers select PEI over standard engineering plastics when applications require sustained exposure to heat, superior rigidity, and good chemical resistance without the brittleness or processing difficulty of thermosets.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 20.77 | - | — | ||
Flexural Strength (MOR)(σf) | 29.51 | MPa | — | ||
Ultimate Tensile Strength(σUTS) | 65.00 | MPa | — | ||
Young's Modulus(E) | 1.130 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 486.8 | K | — | ||
Melting Point / Solidus(Tm) | 391.1 | K | — | ||
Maximum Service Temperature(Tmax) | 655.3 | K | — | ||
Thermal Conductivity(k) | 0.3179 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 1.979 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.498 | - | — |