| About |
|---|
| Celcon® acetal copolymer grade CF802 is a conductive, fuel compatible general purpose acetal copolymer. Celcon® CF802 has been developed to dissipate static electricity from fuel handling systems. Please note Celcon® CF802 has special processing considerations to ensure static dissipation properties. Use minimum back pressure and slowest screw speed possible in retracting screw during cooling portion of cycle. Large gate size (>2 mm) recommended. Pneumatic conveying of material long distances is not recommended.&& |
| Product Description | |
|---|---|
| Supplier | Celanese |
| Generic | Copolymer Polyformaldehyde |
| Material Status | Commercial: Active |
| Features | Electrostatic discharge protection,Fuel resistance |
| Availabilitys | Africa & Middle East ,North America,Latin America,Asia Pacific,Europe |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.47 | g/cm³ | ISO 1183 |
| Shrinkage rate | ISO 294-4 | ||
| TD | 1.6 | % | ISO 294-4 |
| MD | 1.7 | % | ISO 294-4 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | 3000 | MPa | ISO 527-2/1A/1 |
| tensile strength | |||
| yield | 62.0 | MPa | ISO 527-2/1A/50 |
| Tensile strain | |||
| yield | 10 | % | ISO 527-2/1A/50 |
| Tensile Creep Modulus（1 hr） | 2130 | MPa | ISO 899-1 |
| Tensile creep modulus | |||
| 1000 hr | 1050 | MPa | ISO 899-1 |
| Bending modulus | |||
| 23℃ | 3100 | MPa | ISO 178 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | ISO 179/1eA | ||
| -30℃ | 4.0 | kJ/m² | ISO 179/1eA |
| 23℃ | 4.0 | kJ/m² | ISO 179/1eA |
| Charpy Unnotch Impact strength | ISO 179/1eU | ||
| -30℃ | 70 | kJ/m² | ISO 179/1eU |
| 23℃ | 70 | kJ/m² | ISO 179/1eU |
| Impact strength of cantilever beam notch | |||
| 23℃ | 4.8 | kJ/m² | ISO 180-1A |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed | 100 | ℃ | ISO 75-2/A |
| Melting temperature | 167 | ℃ | ISO 11357-3 |
| Linear coefficient of thermal expansion | |||
| TD | 1.2E-4 | 1/℃ | ISO 11359-2 |
| MD | 1.0E-4 | 1/℃ | ISO 11359-2 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 2.0E+3 | ohms | IEC 60093 |
| Volume resistivity | 1.0E+3 | ohms·cm | ASTM D257 |
| Volume resistivity | 3.0E+2 | ohms·cm | IEC 60093 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 80 to 100 | °C | |
| Drying time | 3.0 | hr | |
| Barrel rear temperature | 170 to 180 | °C | |
| Barrel middle temperature | 175 to 185 | °C | |
| Barrel front temperature | 180 to 190 | °C | |
| Nozzle temperature | 190 to 200 | °C | |
| Processing (melt) temperature | 180 to 200 | °C | |
| Mold temperature | 80 to 120 | °C | |
| Injection pressure | 60.0 to 120 | MPa | |
| Hold pressure | 60.0 to 120 | MPa | |
| Back pressure | 0.00 to 2.00 | MPa | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 10°C/min |
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