Polypropylene (PP) is a semi-crystalline thermoplastic polymer widely recognized for its balance of stiffness, chemical resistance, and processability. It is one of the most produced and recycled plastics globally, selected by engineers for applications requiring moderate strength with excellent cost-effectiveness and environmental compatibility. Common substitutes include polyethylene (lower stiffness but better flexibility) and engineering plastics like nylon or PET (higher performance but significantly higher cost); polypropylene fills the middle ground where rigidity and chemical resistance are needed without premium material expense.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 22.47 | MPa | — | ||
Elongation at Break(εf) | 49.84 | - | — | ||
Flexural Strength (MOR)(σf) | 47.85 | MPa | — | ||
Hardness (Vickers)(HV) | 152.5 | HV | — | ||
Ultimate Tensile Strength(σUTS) | 35.95 | MPa | — | ||
Young's Modulus(E) | 1.636 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 273.3 | K | — | ||
Melting Point / Solidus(Tm) | 434.7 | K | — | ||
Maximum Service Temperature(Tmax) | 577.6 | K | — | ||
Thermal Conductivity(k) | 0.5282 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 5.560 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.496 | - | — |