| About |
|---|
| LEXAN™ CXT19EX resin is a High Heat Polycarbonate Copolymer Resin with Vicat of 190°C and crystal clear transparency. This resin is optimized for sheet and film extrusion applications, has a low plateout and a broad processing window with limited yellowing. It is available in limited transparent colors.&& |
| Product Description | |
|---|---|
| Supplier | SABIC |
| Generic | Polycarbonate |
| Material Status | Commercial: Active |
| Availabilitys | North America |
| Technical Data | |||
|---|---|---|---|
| PHYSICAL | Nominal value | Unit | Test method |
| Density | 1.22 | g/cm³ | ASTM D792 |
| Melt Flow Rate | |||
| 330℃，2.16kg | 15 | g/10min | ASTM D1238 |
| Melt Volume Rate | |||
| 330℃，2.16 kg | 13.0 | cm³/10min | ISO 1133 |
| Shrinkage rate | |||
| MD：3.2 mm | 0.70 to 1.0 | % | |
| TD：3.2 mm | 0.70 to 1.0 | % | |
| Water absorption rate | |||
| Saturation, 23 ℃ | 0.50 | % | |
| Equilibrium, 23 ℃, 50% RH | 0.30 | % | |
| MECHANICAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Tensile modulus | |||
| — | 2600 | MPa | ASTM D638 |
| — | 2500 | MPa | ISO 527-1-2 |
| tensile strength | |||
| yield | 80.0 | MPa | ASTM D638 |
| yield | 80.0 | MPa | ISO 527-2/50 |
| fracture | 65.0 | MPa | ASTM D638 |
| fracture | 65.0 | MPa | ISO 527-2/50 |
| Tensile strain | |||
| yield | 7.5 | % | ASTM D638 |
| yield | 7.5 | % | ISO 527-2/50 |
| fracture | > 25 | % | ASTM D638 |
| fracture | > 25 | % | ISO 527-2/50 |
| Bending modulus | |||
| 50 mm span | 2600 | MPa | ASTM D790 |
| — | 2550 | MPa | ISO 178 |
| bending strength | |||
| — | 120 | MPa | ISO 178 |
| Yield, 50 mm span | 120 | MPa | ASTM D790 |
| IMPACT | Nominal value | Unit | Test method |
|---|---|---|---|
| Charpy Notched Impact Strength | |||
| -30℃ | 7.0 | kJ/m² | |
| 23℃ | 9.0 | kJ/m² | |
| Charpy Unnotch Impact strength | |||
| 23℃ | 无断裂 | ISO 179/1eU | |
| Impact strength of cantilever beam notch | |||
| -30℃ | 70 | J/m | ASTM D256 |
| 23℃ | 80 | J/m | ASTM D256 |
| -30℃ | 6.0 | kJ/m² | ISO 180-1A |
| 23℃ | 8.0 | kJ/m² | ISO 180-1A |
| Notched impact strength of cantilever beam | |||
| 23℃ | 无断裂 | ISO 180/1U |
| THERMAL | Nominal value | Unit | Test method |
|---|---|---|---|
| Hot deformation temperature | |||
| 0.45 MPa, unannealed, 3.2 mm | 187 | ℃ | ASTM D648 |
| 0.45 MPa, unannealed, 4.0 mm, 64 mm span | 187 | ℃ | ISO 75-2/Bf |
| 1.8 MPa, unannealed, 3.2 mm | 172 | ℃ | ASTM D648 |
| 1.8 MPa, unannealed, 4.0 mm, 64 mm span | 172 | ℃ | ISO 75-2/Af |
| Vicat Softening Temp | |||
| B120 | 192 | ℃ | ISO 306/B120 |
| Linear coefficient of thermal expansion | |||
| MD：-40~40℃ | 6.0E-5 | 1/℃ | |
| TD：-40℃ | 6.0E-5 | 1/℃ | |
| Thermal conductivity coefficient | 0.20 | W/m/K | ISO 8302 |
| Glass transition temperature | |||
| Half the width | 195 | ℃ | Internal Method |
| optical performance | Nominal value | Unit | Test method |
|---|---|---|---|
| Refractive index | 1.609 | ISO 489 | |
| Transmittance | |||
| 1000 µm | 89.0 | % | |
| 2000 µm | 88.0 | % | |
| 3000 µm | 87.0 | % | |
| Dispersion coefficient | 30.0 | ISO 489 |
| Process Conditions | |||
|---|---|---|---|
| Squeeze description | Nominal value | Unit | Test method |
| Notes |
|---|
| 1. Typical properties: these are not to be construed as specifications. |
| 2. 0.20 in/min |
| 3. Type I, 2.0 in/min |
| 4. 0.051 in/min |
| 5. 0.079 in/min |
| 6. at Yield |
| 7. 80*10*3 sp=62mm |
| 8. 80*10*3 mm |
| 9. 80*10*4 mm |
| 10. Rate B (120°C/h), Loading 2 (50 N) |
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