PTT (polytrimethylene terephthalate) is a semi-crystalline polyester thermoplastic that combines the structural benefits of polyester chemistry with enhanced flexibility and resilience compared to PET and PBT. It is widely used in fiber applications, automotive textiles, industrial fabrics, and molded components where a balance of strength, elasticity, and thermal stability is required; PTT is valued in industries such as apparel, carpet, automotive interiors, and engineering plastics for its superior recovery from deformation, moisture resistance, and processing versatility.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 35.87 | - | — | ||
Flexural Strength (MOR)(σf) | 78.60 | MPa | — | ||
Ultimate Tensile Strength(σUTS) | 55.90 | MPa | — | ||
Young's Modulus(E) | 2.307 | GPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 320.7 | K | — | ||
Melting Point / Solidus(Tm) | 501.2 | K | — | ||
Maximum Service Temperature(Tmax) | 632.7 | K | — | ||
Thermal Conductivity(k) | 149 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 1.424 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.616 | - | — |