PET (polyethylene terephthalate) is a thermoplastic polyester widely used across consumer and industrial applications due to its excellent clarity, chemical resistance, and processability. It is the dominant material for single-use beverage containers, food packaging films, and textile fibers, and also serves in demanding applications including automotive components, electrical insulation, and engineering parts where moderate strength and good dimensional stability are required. Engineers select PET for its favorable balance of optical properties, moisture barrier performance, and cost-effectiveness, though its use at elevated temperatures is limited compared to higher-performance engineering polymers.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 55.95 | MPa | — | ||
Elongation at Break(εf) | 102 | - | — | ||
Flexural Strength (MOR)(σf) | 60.11 | MPa | — | ||
Hardness (Vickers)(HV) | 202.5 | HV | — | ||
Ultimate Tensile Strength(σUTS) | 61.55 | MPa | — | ||
Young's Modulus(E) | 2.712 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 350.8 | K | — | ||
Melting Point / Solidus(Tm) | 523.4 | K | — | ||
Maximum Service Temperature(Tmax) | 647.8 | K | — | ||
Thermal Conductivity(k) | 0.1991 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 3.354 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.582 | - | — |