PPF (polypropylene fiber or phenolic phenolic formulation) is a semi-crystalline thermoplastic polymer engineered for applications requiring moderate stiffness and thermal stability. It is commonly used in automotive interior components, consumer appliances, packaging films, and industrial housings where a balance of rigidity, processability, and cost-effectiveness is needed. PPF is selected over lower-modulus polymers when dimensional stability and resistance to flexing are critical, while remaining more economical and easier to mold than high-performance thermosets or reinforced composites.
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| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 7.597 | ksi | — | ||
Elongation at Break(εf) | 28.65 | - | — | ||
Flexural Strength (MOR)(σf) | 7.397 | ksi | — | ||
Hardness (Vickers)(HV) | 152.5 | HV | — | ||
Ultimate Tensile Strength(σUTS) | 8.401 | ksi | — | ||
Young's Modulus(E) | 171.4 | ksi | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 100 | °F | — | ||
Melting Point / Solidus(Tm) | 364.3 | °F | — | ||
Maximum Service Temperature(Tmax) | 721 | °F | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 2.522 | eV | — |