| About |
|---|
| Chemical Resistance Application Copier, Watch, Clock, VCR, Printer Parts, etc.&& |
| Product Description | |
|---|---|
| Supplier | LG Chemical |
| Generic | Copolymer Polyformaldehyde |
| Material Status | Commercial: Active |
| Features | Solvent resistance,HB |
| Availabilitys | North America,Latin America,Asia Pacific,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.41 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 190℃，2.16kg | 9.0 | g/10min | ASTM D1238 |
| Shrinkage rate | |||
| MD：3.2 mm | 1.8 to 2.1 | % | ASTM D955 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| 23℃，6.4mm | 69 | J/m | ASTM D256 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed, 6.4 mm | 110 | ℃ | ASTM D648 |
| 0.45 MPa, unannealed, 6.4 mm | 160 | ℃ | ASTM D648 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Surface resistivity | 1.0E+16 | ohms | ASTM D257 |
| Volume resistivity | |||
| 23℃ | 1.0E+14 | ohms·cm | ASTM D257 |
| Dielectric strength | |||
| 23 ℃，1 mm | 24 | kV/mm | ASTM D149 |
| Dissipation factor | |||
| 1 MHz | 3.8E-4 | ASTM D150 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | UL 94 | ||
| 0.71 mm | HB | UL 94 | |
| 1.50 mm | HB | UL 94 | |
| 3.00 mm | HB | UL 94 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | |||
| Yield, 3.20 mm | 61.2 | MPa | ASTM D638 |
| Tensile strain | |||
| Fracture, 3.20 mm | 65 | % | ASTM D638 |
| Bending modulus | |||
| 6.40 mm | 2570 | MPa | ASTM D790 |
| bending strength | |||
| Yield, 6.40 mm | 89.8 | MPa | ASTM D790 |
| Rockwell hardness | |||
| R-level | 82 | ASTM D785 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 90 to 110 | °C | |
| Drying time | 3.0 to 6.0 | hr | |
| Minimum Moisture Content | 0.10 | % | |
| Barrel rear temperature | 160 to 180 | °C | |
| Barrel middle temperature | 180 to 200 | °C | |
| Barrel front temperature | 190 to 200 | °C | |
| Nozzle temperature | 190 to 200 | °C | |
| Processing (melt) temperature | 190 to 200 | °C | |
| Mold temperature | 60 to 80 | °C | |
| Back pressure | 0.394 to 0.789 | MPa | |
| Screw speed | 50 to 100 | rpm | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 0.39 in/min |
| 3. 0.11 in/min |
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