| About |
|---|
| Ophthalmic/safety lens market. OQ2xxx series in all transparent tints. Dedicated equipment, stringent production control conditions.&& |
| Product Description | |
|---|---|
| Supplier | SABIC |
| Generic | Polycarbonate |
| Material Status | Commercial: Active |
| Availabilitys | North America,Asia Pacific |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.20 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 300℃，1.20kg | 7.5 | g/10min | ASTM D1238 |
| Shrinkage rate | |||
| MD：3.2 mm | 0.50 to 0.70 | % | Internal Method |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| tensile strength | ASTM D638 | ||
| yield | 62.1 | MPa | |
| fracture | 68.9 | MPa | |
| Tensile strain | |||
| fracture | 140 | % | ASTM D638 |
| Bending modulus | |||
| 50 mm span | 2340 | MPa | ASTM D790 |
| bending strength | |||
| Yield, 50 mm span | 96.5 | MPa | ASTM D790 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| 23℃ | 910 | J/m | ASTM D256 |
| Dart impact equipped with measuring instruments | |||
| 23℃，Energy at Peak Load | 65.1 | J | ASTM D3763 |
| Tensile impact strength | 641 | kJ/m² | ASTM D1822 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 1.8 MPa, unannealed, 6.4 mm | 132 | ℃ | ASTM D648 |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Refractive index | 1.586 | ASTM D542 | |
| Transmittance | |||
| 2540 µm | 89.0 | % | ASTM D1003 |
| Haze | |||
| 2540 µm | 0.60 | % | ASTM D1003 |
| Yellowness index | 0.50 | YI | ASTM D1925 |
| Process Conditions | |||
|---|---|---|---|
| injection | Nominal value | Unit | Test method |
| Drying temperature | 121 | °C | |
| Drying time | 3.0 to 4.0 | hr | |
| Drying time, maximum | 48 | hr | |
| Recommended maximum moisture content | 0.020 | % | |
| Recommended injection volume | 40 to 60 | % | |
| Barrel rear temperature | 288 to 310 | °C | |
| Barrel middle temperature | 299 to 321 | °C | |
| Barrel front temperature | 310 to 332 | °C | |
| Nozzle temperature | 304 to 327 | °C | |
| Processing (melt) temperature | 310 to 332 | °C | |
| Mold temperature | 82.2 to 116 | °C | |
| Back pressure | 0.345 to 0.689 | MPa | |
| Screw speed | 40 to 70 | rpm | |
| Vent depth | 0.025 to 0.076 | mm | |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. Type I, 2.0 in/min |
| 3. 0.051 in/min |
| 4. Type S |
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