| About |
|---|
| Evonik manufactures a range of polybutylene terephthalate (PBT) compounds and supplies it under the registered trademark VESTODUR®. Material properties characterizing VESTODUR® compounds are: high thermostability high stiffness low water absorption resulting in high dimensional stability high hardness good strength good sliding friction behavior, low abrasion good creep behavior good electrical properties good chemical resistance good weathering resistance good processability no tendency to form stress cracks Applications VESTODUR® compounds can be used for a wide range of applications, for example, for thin-walled injection-molded parts in electrical engineering applications, for especially dimensionally stable components of high surface quality in the automotive industry, as a barrier layer in multilayer fuel lines, for laser-markable components, and in the cable industry. High-molecular extrudable VESTODUR® specialty products have come to occupy a leading position as materials for secondary fiber optic jacketing, because they fulfill the requirements perfectly.&& |
| Product Description | |
|---|---|
| Supplier | Evonik |
| Generic | polybutylene terephthalate |
| Material Status | Commercial: Active |
| Features | Good Rigidity,Weather resistance is good,Excellent Processability,Good flexibility,Good Dimensional Stability,Good Electrical Properties,Low or no water absorption,Good Hardness,Good wear resistance,Solvent resistance,Low moisture absorption,Heat Stabilized,HB |
| Availabilitys | North America |
| Process Methods | Extrusion |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.53 | g/cm³ | ISO 1183 |
| Melt Volume Rate | |||
| 250℃，2.16 kg | 13.0 | cm³/10min | ISO 1133 |
| Shrinkage rate | ISO 294-4 | ||
| TD | 1.5 | % | ISO 294-4 |
| MD | 0.20 | % | ISO 294-4 |
| Water absorption rate | |||
| Saturation, 23 ℃ | 0.45 | % | ISO 62 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | ISO 179/1eA | ||
| -30 ℃, completely fractured | 12 | kJ/m² | ISO 179/1eA |
| 23 ℃, completely fractured | 12 | kJ/m² | ISO 179/1eA |
| Charpy Unnotch Impact strength | ISO 179/1eU | ||
| -30 ℃, completely fractured | 80 | kJ/m² | ISO 179/1eU |
| 23 ℃, completely fractured | 75 | kJ/m² | ISO 179/1eU |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 0.45 MPa, unannealed | 223 | ℃ | ISO 75-2/B |
| 1.8 MPa, unannealed | 220 | ℃ | ISO 75-2/A |
| Vicat Softening Temp | |||
| — | 220 | ℃ | ISO 306/A |
| — | 213 | ℃ | ISO 306/B |
| Melting temperature | 221 to 226 | ℃ | ISO 11357-3 |
| Linear coefficient of thermal expansion | ISO 11359-2 | ||
| MD：23~55℃ | 5.0E-5 | 1/℃ | ISO 11359-2 |
| TD：23~55℃ | 6.0E-5 | 1/℃ | ISO 11359-2 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 1.0E+13 | ohms | IEC 60093 |
| Volume resistivity | |||
| 23℃ | 1.0E+15 | ohms·cm | IEC 60093 |
| Dielectric strength | |||
| 1 mm in oil | 27 | kV/mm | IEC 60243-1 |
| Relative permittivity | IEC 60250 | ||
| 23℃，100 Hz | 4.00 | IEC 60250 | |
| 23℃，1 MHz | 4.40 | IEC 60250 | |
| Dissipation factor | IEC 60250 | ||
| 23℃，100 Hz | 3.0E-3 | IEC 60250 | |
| 23℃，1 MHz | 0.017 | IEC 60250 | |
| Compared to the leakage tracing index | IEC 60112 | ||
| CTI | 425 | V | IEC 60112 |
| Solution A | 450 | V | IEC 60112 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| Electrolytic corrosion | A1 step | IEC 60426 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Shore hardness | |||
| Shaw’s D | 83 | ISO 868 | |
| Ball hardness | 200 | MPa | ISO 2039-1 |
| Tensile modulus | 9500 | MPa | ISO 527-2 |
| tensile strength | 160 | MPa | ISO 527-2/50 |
| Tensile strain | |||
| fracture | 3.0 | % | ISO 527-2/50 |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. H 30 |
| 3. 100 Drop Voltage |
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