| About |
|---|
| Lubricated High Viscosity Acetal Homopolymer with Low Wear and Low Friction&& |
| Product Description | |
|---|---|
| Supplier | DuPont |
| Generic | Paraformaldehyde |
| Material Status | Commercial: Active |
| Features | High Viscosity,Low coefficient of friction,Lubricating,Good wear resistance,HB |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.40 | g/cm³ | ISO 1183 |
| Melt Flow Rate | |||
| 190℃，2.16kg | 2.5 | g/10min | ISO 1133 |
| Shrinkage rate | ISO 294-4 | ||
| TD | 1.8 | % | ISO 294-4 |
| MD | 2.0 | % | ISO 294-4 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | 3000 | MPa | ISO 527-2 |
| tensile strength | |||
| yield | 70.0 | MPa | ISO 527-2 |
| Tensile strain | |||
| yield | 18 | % | ISO 527-2 |
| Nominal tensile fracture strain | 45 | % | ISO 527-2 |
| Tensile Creep Modulus（1 hr） | 2700 | MPa | ISO 899-1 |
| Tensile creep modulus | |||
| 1000 hr | 1500 | MPa | ISO 899-1 |
| Bending modulus | 2800 | MPa | ISO 178 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | ISO 179/1eA | ||
| -30℃ | 7.0 | kJ/m² | ISO 179/1eA |
| 23℃ | 9.0 | kJ/m² | ISO 179/1eA |
| Charpy Unnotch Impact strength | ISO 179/1eU | ||
| -30℃ | 170 | kJ/m² | ISO 179/1eU |
| 23℃ | 250 | kJ/m² | ISO 179/1eU |
| Impact strength of cantilever beam notch | |||
| 23℃ | 8.0 | kJ/m² | ISO 180-1A |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 97.0 | ℃ | ISO 75-2/A |
| 0.45 MPa, unannealed | 163 | ℃ | 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 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Burning rate | |||
| 1 mm | 26 | mm/min | ISO 3795 |
| Flame retardant level | UL 94 | ||
| 0.80 mm | HB | UL 94 | |
| 1.50 mm | HB | UL 94 | |
| Flammability level | IEC 60695-11-10, -20 | ||
| 0.8 mm | HB | IEC 60695-11-10, -20 | |
| 1.5 mm | HB | IEC 60695-11-10, -20 | |
| FMVSS flame retardant rating | B | FMVSS 302 | |
| Fogging（Gvalue，condensate） | 1.0E-4 | g | ISO 6452 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| discharge | < 8.00 | mg/kg | VDA 275 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Extrusion | 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 | 90.0 to 110 | MPa | |
| Drying Recommended | yes | ||
| Hold Pressure Time | 8.00 | s/mm | |
| Drying temperature | 75 to 85 | °C | |
| Drying time | 2.0 to 4.0 | hr | |
| Recommended maximum moisture content | 0.20 | % | |
| Melt temperature | 195 to 205 | °C | |
| Extrusion Melt Temperature, Optimum | 200 | °C | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 10°C/min |
| 3. FMVSS 302 |
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