| About |
|---|
| High Viscosity Acetal Homopolymer Developed for Food Contact Applications&& |
| Product Description | |
|---|---|
| Supplier | DuPont |
| Generic | Paraformaldehyde |
| Material Status | Commercial: Active |
| Features | High Viscosity,Food contact compliance,HB |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Process Methods | Profile extrusion |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.42 | g/cm³ | ISO 1183 |
| Melt Flow Rate | 2.5 | g/10min | ISO 1133 |
| Melt Volume Rate | |||
| 190℃，2.16 kg | 1.90 | cm³/10min | ISO 1133 |
| Shrinkage rate | ISO 294-4 | ||
| TD | 2.0 | % | ISO 294-4 |
| MD | 2.2 | % | ISO 294-4 |
| Water absorption rate | |||
| Saturation, 23 ℃, 2.00 mm | 1.4 | % | ISO 62 |
| Equilibrium, 23 ℃, 50% RH, 2.00 mm | 0.30 | % | ISO 62 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | ISO 179/1eA | ||
| -30℃ | 11 | kJ/m² | ISO 179/1eA |
| 23℃ | 14 | kJ/m² | ISO 179/1eA |
| Charpy Unnotch Impact strength | ISO 179/1eU | ||
| -30℃ | 350 | kJ/m² | ISO 179/1eU |
| 23℃ | No Break | ISO 179/1eU | |
| Impact strength of cantilever beam notch | ISO 180/1A | ||
| -40℃ | 12 | kJ/m² | ISO 180-1A |
| 23℃ | 14 | kJ/m² | ISO 180-1A |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 93.0 | ℃ | ISO 75-2/A |
| 0.45 MPa, unannealed | 160 | ℃ | ISO 75-2/B |
| Vicat Softening Temp | |||
| B50 | 160 | ℃ | ISO 306 |
| 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 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Burning rate | |||
| 1 mm | < 100 | mm/min | ISO 3795 |
| Flame retardant level | UL 94 | ||
| 0.75 mm | HB | UL 94 | |
| 1.50 mm | HB | UL 94 | |
| Flammability level | IEC 60695-11-10, -20 | ||
| 0.75 mm | HB | IEC 60695-11-10, -20 | |
| 1.5 mm | HB | IEC 60695-11-10, -20 | |
| FMVSS flame retardant rating | B | FMVSS 302 | |
| Fogging（Fvalue，refraction） | 91 | % | ISO 6452 |
| Supplementary information | Nominal value | Unit | Test method |
|---|---|---|---|
| discharge | < 8.00 | mg/kg | VDA 275 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | 2900 | MPa | ISO 527-2 |
| tensile strength | |||
| yield | 70.0 | MPa | ISO 527-2 |
| Tensile strain | |||
| yield | 25 | % | 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 | 2600 | MPa | ISO 178 |
| bending strength | |||
| 3.50% strain | 74.0 | MPa | ISO 178 |
| Rockwell hardness | ISO 2039-2 | ||
| M-level | 92 | ISO 2039-2 | |
| R-level | 120 | ISO 2039-2 |
| 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 | 80 | °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 |
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