| About |
|---|
| LEXAN 940A Polycarbonate (PC) resin is a non-filled, injection moldable grade. This brominated flame retardant PC has a UL-94 V0 rating. LEXAN 940A is available in limited transparent and tinted color options and is a general purpose resin designed to meet the needs of various applications. As a non-chlorinated, non-brominated flame retardant solution, LEXAN 945A resin could be considered an alternative.&& |
| Product Description | |
|---|---|
| Supplier | SABIC |
| Generic | Polycarbonate |
| Material Status | Commercial: Active |
| Features | Good surface appearance,Flame Characteristics,V-2,V-0 |
| Availabilitys | North America,Asia Pacific,Europe |
| Process Methods | Injection Molding |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | ASTM D792 | ||
| — | 1.21 | g/cm³ | |
| — | 1.22 | g/cm³ | |
| Specific volume | 0.835 | cm³/g | ASTM D792 |
| Melt Flow Rate | |||
| 300℃，1.20kg | 10 | g/10min | ASTM D1238 |
| Shrinkage rate | |||
| MD：3.2 mm | 0.50 to 0.70 | % | Internal Method |
| Water absorption rate | ASTM D570 | ||
| 24hr | 0.15 | % | |
| Equilibrium, 23 ℃ | 0.35 | % | |
| Equilibrium, 100 ℃ | 0.58 | % | |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Impact strength of cantilever beam notch | |||
| 23℃ | 640 | J/m | ASTM D256 |
| Notched impact strength of cantilever beam | |||
| 23℃ | 3200 | J/m | ASTM D4812 |
| Drop hammer impact | |||
| 23℃ | 169 | J | ASTM D3029 |
| Tensile impact strength | 525 | kJ/m² | ASTM D1822 |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | ASTM D648 | ||
| 0.45 MPa, unannealed, 6.4 mm | 138 | ℃ | |
| 1.8 MPa, unannealed, 6.4 mm | 132 | ℃ | |
| Vicat Softening Temp | 152 | ℃ | ASTM D1525 6 |
| Linear coefficient of thermal expansion | |||
| MD：-40~95℃ | 6.8E-5 | 1/℃ | ASTM E831 |
| Thermal conductivity coefficient | 0.19 | W/m/K | ASTM C177 |
| Relative temperature index | 130 | ℃ | UL 746 |
| Electrical performance | 130 | ℃ | UL 746 |
| Impact mechanical performance | 120 | ℃ | UL 746 |
| Electrical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Volume resistivity | > 1.0E+17 | ohms·cm | ASTM D257 |
| Dielectric strength | |||
| 3.2 mm in air | 17 | kV/mm | ASTM D149 |
| Dielectric constant | ASTM D150 | ||
| 50 Hz | 3.01 | ||
| 60 Hz | 3.01 | ||
| 1 MHz | 2.96 | ||
| Dissipation factor | ASTM D150 | ||
| 50 Hz | 9.0E-4 | ||
| 60 Hz | 9.0E-4 | ||
| 1 MHz | 0.010 | ||
| Arc resistance | PLC 7 | ASTM D495 | |
| Compared to the leakage tracing index | PLC 2 | UL 746 | |
| High Arc Burning Index (HAI) | PLC 3 | UL 746 | |
| High voltage arc marking rate | |||
| HVTR | PLC 3 | UL 746 | |
| Hot wire ignition | |||
| HWI | PLC 2 | UL 746 |
| FLAME CHARACTERISTICS | Nominal value | Unit | Test method |
|---|---|---|---|
| Flame retardant level | UL 94 | ||
| 1.47 mm | V-2 | ||
| 3.00 mm | V-0 | ||
| Extreme oxygen index | 35 | % | ISO 4589-2 |
| Radiation Plate Listing (UL) | YES |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Refractive index | 1.586 | ASTM D542 | |
| Transmittance | |||
| 2540 µm | 85.0 | % | ASTM D1003 |
| Haze | |||
| 2540 µm | 1.0 | % | ASTM D1003 |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Rockwell hardness | ASTM D785 | ||
| M-level | 70 | ||
| R-level | 118 | ||
| tensile strength | ASTM D638 | ||
| yield | 62.1 | MPa | |
| fracture | 55.8 | MPa | |
| Tensile strain | ASTM D638 | ||
| yield | 7.0 | % | |
| fracture | 90 | % | |
| Bending modulus | |||
| 50 mm span | 2240 | MPa | ASTM D790 |
| bending strength | |||
| Yield, 50 mm span | 91.0 | MPa | ASTM D790 |
| Taber abraser | |||
| 1000 cycles, 1000 g, CS-17 wheels | 10.0 | mg | ASTM D1044 |
| 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 | 217 to 293 | °C | |
| Barrel middle temperature | 282 to 304 | °C | |
| Barrel front temperature | 293 to 316 | °C | |
| Nozzle temperature | 288 to 310 | °C | |
| Processing (melt) temperature | 293 to 316 | °C | |
| Mold temperature | 71.0 to 93.0 | °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 |
| 5. Rate A (50°C/h), Loading 2 (50 N) |
| 6. Tungsten Electrode |
| 7. Surface |
| 8. UL Tested |
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