| About |
|---|
| High Viscosity Acetal Homopolymer&& |
| Product Description | |
|---|---|
| Supplier | DuPont |
| Generic | Paraformaldehyde |
| Material Status | Commercial: Active |
| Features | HB,High Viscosity |
| Availabilitys | North America,Europe,Africa & Middle East ,Asia Pacific,Latin America |
| Process Methods | Injection Molding,Profile extrusion,Extrusion |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.42 | g/cm³ | ISO 1183 |
| Melt Flow Rate | |||
| 190℃，2.16kg | 2.4 | g/10min | ISO 1133 |
| Melt Volume Rate | 2.0 | cm³/10min | ISO 1133 |
| Molding shrinkage | |||
| Cross flow | 1.8 | % | ISO 294-4 |
| Flowing flow | 2.1 | % | ISO 294-4 |
| Melt Density | 1.19 | g/cm³ | |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile Modulus | |||
| – | 3150 | MPa | ISO 527 |
| Tensile Strength | |||
| Yield yld | 72 | MPa | ISO 527-2 |
| Tensile Elongation | |||
| Yield yld | 23 | % | ISO 527-2 |
| Tensile Strain | |||
| Broken BRK | >50 | % | ISO 527 |
| Flexural Modulus | 2900 | MPa | ISO 178 |
| Poisson’s Ratio | 0.37 | ASTM E132 | |
| Rockwell hardness | |||
| M | 91 | ISO 2039-2 | |
| R | 121 | ISO 2039-2 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | |||
| -30℃ | 11 | kJ/m² | ISO 179/1eA |
| 23℃ | 12 | kJ/m² | ISO 179/1eA |
| Charpy Unnotch Impact strength | |||
| -30℃ | 400 | kJ/m² | ISO 179/1eU |
| 23℃ | NB | kJ/m² | ISO 179/1eU |
| Izod Notched Impact strength | |||
| -40℃ | 10 | KJ/m² | ISO 180/1A |
| 23℃ | 11 | KJ/m² | ISO 180/1A |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature HDT | |||
| 1.8 MPa | 97 | ℃ | ISO 75-1/-2 |
| Melting temperature | 178 | ℃ | ISO 11357-3 |
| Coeff. of linear thermal expansion | |||
| Flowing flow | 1.1E-4 | cm/cm/℃ | ISO 11359-2 |
| Flow: -40 ℃ -23 ℃ | 1.0E-4 | cm/cm/℃ | ISO 11359-2 |
| Horizontal Transition | 1.1E-4 | cm/cm/℃ | ISO 11359-2 |
| Horizontal Transition: -40 ℃ -23 ℃ | 1.0E-4 | cm/cm/℃ | ISO 11359-2 |
| Annealing Temperature | 160 | ℃ | |
| Annealing time | 30 | min/mm |
| ELECTRICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface Resistivity | >1E15 | ohms | IEC 60093 |
| Volume Resistance | >1E15 | ohms·cm | IEC 60093 |
| Dielectric Strength | 45 | kV/mm | IEC 60243-1 |
| Dielectric Constant | |||
| 100Hz | 4 | IEC 62631-2-1 | |
| 1MHz | 3.9 | IEC 62631-2-1 | |
| Dissipation Factor | |||
| 100Hz | 5E-4 | IEC 62631-2-1 | |
| 1MHz | 6E-3 | IEC 62631-2-1 | |
| Compared Tracking Index | 600 | V | IEC 60112 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame Class Rating | |||
| 1.00 mm³ | 37 | mm/min | ISO 3795 |
| 0.8 mm | HB | UL 94 | |
| 1.5 mm | HB | UL 94 | |
| FMVSS flame retardant rating | B | FMVSS 302 |
| Process Conditions | |||
|---|---|---|---|
| Extrusion Molded | Nominal value | Unit | Test method |
| Injection Molding | Nominal value | Unit | Test method |
| Drying Temperature | 75 to 85 | °C | |
| Drying Time | 2.0 to 4.0 | hr | |
| Maximum Moisture Content | 0.20 | % | |
| Melt Temperature | 195 to 205 | °C | |
| Extension Melt Temperature, Optimal | 200 | °C | |
| Drying Temperature | 80 | °C | |
| Drying Time | 2.0 to 4.0 | hr | |
| Maximum Moisture Content | 0.20 | % | |
| Melt Temperature | 210 to 220 | °C | |
| Melt Temperature, Optimal | 215 | °C | |
| Mold Temperature | 80 to 100 | °C | |
| Mold Temperature, Optimal | 90 | °C | |
| Maintain pressure | 90.0 to 110 | 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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