| About |
|---|
| Medium-high Viscosity Acetal Homopolymer with Improved Processing&& |
| Product Description | |
|---|---|
| Supplier | DuPont |
| Generic | Paraformaldehyde |
| Material Status | Commercial: Active |
| Features | Excellent Processability |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| MECHANICAL | Nominal value | Unit | Test method |
| Tensile modulus | 3100 | MPa | ISO 527-2 |
| tensile strength | |||
| yield | 71.0 | MPa | ISO 527-2 |
| Tensile strain | |||
| yield | 23 | % | ISO 527-2 |
| Nominal tensile fracture strain | 40 | % | ISO 527-2 |
| Bending modulus | 3000 | MPa | ISO 178 |
| shear modulus | 1120 | MPa | ISO 6721 |
| Poisson’s ratio | 0.42 | ISO 527 | |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | ISO 179/1eA | ||
| -30℃ | 10 | kJ/m² | ISO 179/1eA |
| 23℃ | 11 | kJ/m² | ISO 179/1eA |
| Charpy Unnotch Impact strength | ISO 179/1eU | ||
| -30℃ | 340 | kJ/m² | ISO 179/1eU |
| 23℃ | No Break | ISO 179/1eU |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 100 | ℃ | ISO 75-2/A |
| 0.45 MPa, unannealed | 165 | ℃ | ISO 75-2/B |
| Melting temperature | 178 | ℃ | ISO 11357-3 |
| Linear coefficient of thermal expansion | |||
| TD | 1.1E-4 | 1/℃ | ISO 11359-2 |
| MD | 1.1E-4 | 1/℃ | ISO 11359-2 |
| annealing temperature | 160 | ℃ | |
| annealing time | |||
| Optional | 30.0 | min/mm |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | > 1.0E+15 | ohms | IEC 60093 |
| Volume resistivity | > 1.0E+15 | ohms·cm | IEC 60093 |
| Relative permittivity | IEC 60250 | ||
| 100 Hz | 3.80 | IEC 60250 | |
| 1 MHz | 3.50 | IEC 60250 | |
| Compared to the leakage tracing index | 600 | V | IEC 60112 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Burning rate | |||
| 1 mm | < 100 | mm/min | ISO 3795 |
| FMVSS flame retardant rating | B | FMVSS 302 | |
| atomization | ISO 6452 | ||
| F-value（refraction） | 90 | % | ISO 6452 |
| G-value（condensate） | 3.5E-4 | g | ISO 6452 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| discharge | < 8.00 | mg/kg | VDA 275 |
| Emissions of organic compounds | 3.10 | µgC/g | VDA 277 |
| PHYSICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Density | 1.42 | g/cm³ | ISO 1183 |
| Melt Flow Rate | |||
| 190℃，2.16kg | 7.0 | g/10min | ISO 1133 |
| Melt Volume Rate | |||
| 190℃，2.16 kg | 6.00 | cm³/10min | ISO 1133 |
| Shrinkage rate | ISO 294-4 | ||
| TD | 1.8 | % | ISO 294-4 |
| MD | 2.1 | % | ISO 294-4 |
| Water absorption rate | |||
| Saturation, 23 ℃, 2.00 mm | 0.90 | % | ISO 62 |
| Equilibrium, 23 ℃, 50% RH, 2.00 mm | 0.20 | % | ISO 62 |
| Melt density | 1.16 | g/cm³ | |
| Ejection temperature | 135 | ℃ |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 80 | °C | |
| Drying time – hot air dryer | 2.0 to 4.0 | hr | |
| Recommended maximum moisture content | 0.20 | % | |
| Processing (melt) temperature | 210 to 220 | °C | |
| Melt Temperature, Optimum | 215 | °C | |
| Mold temperature | 80 to 100 | °C | |
| Mold Temperature, Optimum | 90 | °C | |
| Hold pressure | 80.0 to 100 | MPa | |
| Drying Recommended | yes | ||
| Hold Pressure Time | 8.00 | s/mm | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 10°C/min |
| 3. FMVSS 302 |
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