PPO (polyphenylene oxide) is an engineering thermoplastic known for its excellent thermal stability, dimensional consistency, and rigidity, making it suitable for demanding applications requiring sustained performance at elevated temperatures. It is widely used in automotive underhood components, appliance housings, electrical connectors, and HVAC systems where heat resistance and mechanical reliability are critical. Engineers select PPO over commodity plastics when long-term thermal performance, low creep, and good dimensional stability are required in high-temperature or precision-tolerance environments.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 11.55 | - | — | ||
Flexural Strength (MOR)(σf) | 11.09 | ksi | — | ||
Ultimate Tensile Strength(σUTS) | 5.739 | ksi | — | ||
Young's Modulus(E) | 172.9 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 331.3 | °F | — | ||
Melting Point / Solidus(Tm) | 397.9 | °F | — | ||
Maximum Service Temperature(Tmax) | 740.5 | °F | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.560 | - | — |