| About |
|---|
| Product Description | |
|---|---|
| Supplier | Chang Chun |
| Generic | polybutylene terephthalate |
| Material Status | Commercial: Active |
| Features | Good surface appearance,High liquidity,HB |
| Technical Data | |||
|---|---|---|---|
| MECHANICAL | Nominal value | Unit | Test method |
| tensile strength | 49-58.8 | MPa | ASTM D638 |
| Tensile strain | |||
| fracture | 30 | % | ASTM D638 |
| bending strength | 80-90 | MPa | ASTM D790 |
| Bending modulus | 2260 | MPa | ASTM D790 |
| Rockwell hardness | |||
| M-level | 85-90 | ASTM D785 | |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | 44-54 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| melting point | 225 | ℃ | DSC |
| Hot deformation temperature | |||
| 1.8 MPa | 60 | ℃ | ASTM D648 |
| 0.45 MPa | 155 | ℃ | ASTM D648 |
| Linear coefficient of thermal expansion | 9E-5 | /℃ | ASTM D696 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Dielectric constant | |||
| 60 Hz | 3.3 | ASTM D150 | |
| Dissipation factor | |||
| 60 Hz | 0.001 | ASTM D150 | |
| Volume resistivity | 10^15 | ohms·cm | ASTM D257 |
| Surface resistivity | 10^13 | ohms/sq | ASTM D257 |
| Dielectric strength | ＞20 | kV/mm | ASTM D149 |
| Arc resistance | 120 | sec | ASTM D495 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | HB | class | UL 94 |
| PHYSICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Density | 1.30-1.32 | g/cm³ | ASTM D792 |
| viscosity | 0.79±0.015 | ASTM D2857 | |
| Water absorption rate | |||
| 24hr | 0.06 | % | ASTM D570 |
| Melt Flow Rate | |||
| 235℃，2.16kg | 58-72 | g/min | ASTM D1238 |
| 250℃，2.16kg | 82-105 | g/min | ASTM D1238 |
| Process Conditions | |||
|---|---|---|---|
| injection molding | Nominal value | Unit | Test method |
| Processing temperature | 230-260 | ℃ | |
| Nozzle temperature | 245-250 | ℃ | |
| Mold temperature | 30-100 | ℃ | |
| Injection pressure | 50-100 | MPa | |
| Maintaining pressure | 30-70 | MPa | |
| Back pressure | 0-0.3 | MPa | |
| Screw speed | 60-120 | rpm | |
| Notes |
|---|
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