Sabic Lexan 1278R resin is a medium viscosity, 20% glass reinforced, flame retardant grade, offering a very high rigidity. It is especially designed for applications like industrial enclosures and fuse boxes requiring a low knock-out strength for moulded-in membranes.
| TYPICAL PROPERTIES (1) | |||
| MECHANICAL | Value | Unit | Standard |
| Taber Abrasion, CS-17, 1 kg | 17 | mg/1000cy | SABIC Method |
| Tensile Stress, break, 5 mm/min | 80 | MPa | ISO 527 |
| Tensile Strain, break, 5 mm/min | 2 | % | ISO 527 |
| Tensile Modulus, 1 mm/min | 5200 | MPa | ISO 527 |
| Flexural Stress, break, 2 mm/min | 120 | MPa | ISO 178 |
| Flexural Modulus, 2 mm/min | 5000 | MPa | ISO 178 |
| Hardness, H358/30 | 160 | MPa | ISO 2039-1 |
| IMPACT | Value | Unit | Standard |
| Charpy Impact, unnotched, -30°C | 5 | kJ/m² | ISO 179/2C |
| Izod Impact, unnotched 80*10*3 +23°C | 35 | kJ/m² | ISO 180/1U |
| Izod Impact, unnotched 80*10*3 -30°C | 35 | kJ/m² | ISO 180/1U |
| Izod Impact, notched 80*10*3 +23°C | 7 | kJ/m² | ISO 180/1A |
| Izod Impact, notched 80*10*3 -30°C | 6 | kJ/m² | ISO 180/1A |
| Charpy 23°C, V-notch Edgew 80*10*3 sp=62mm | 6 | kJ/m² | ISO 179/1eA |
| Charpy -30°C, V-notch Edgew 80*10*3 sp=62mm | 5 | kJ/m² | ISO 179/1eA |
| Charpy 23°C, Unnotch Edgew 80*10*3 sp=62mm | 40 | kJ/m² | ISO 179/1eU |
| Charpy -30°C, Unnotch Edgew 80*10*3 sp=62mm | 40 | kJ/m² | ISO 179/1eU |
| Charpy Impact, notched, 23°C | 8 | kJ/m² | ISO 179/2C |
| Charpy Impact, notched, -20°C | 5 | kJ/m² | ISO 179/2C |
| THERMAL | Value | Unit | Standard |
| Thermal Conductivity | 0.22 | W/m-°C | ISO 8302 |
| CTE, 23°C to 80°C, flow | 3.E-05 | 1/°C | ISO 11359-2 |
| Ball Pressure Test, 125°C +/- 2°C | PASSES | - | IEC 60695-10-2 |
| Vicat Softening Temp, Rate A/50 | 151 | °C | ISO 306 |
| Vicat Softening Temp, Rate B/50 | 141 | °C | ISO 306 |
| Vicat Softening Temp, Rate B/120 | 143 | °C | ISO 306 |
| HDT/Be, 0.45MPa Edgew 120*10*4 sp=100mm | 140 | °C | ISO 75/Be |
| HDT/Ae, 1.8 MPa Edgew 120*10*4 sp=100mm | 134 | °C | ISO 75/Ae |
| Relative Temp Index, Elec | 120 | °C | UL 746B |
| Relative Temp Index, Mech w/impact | 120 | °C | UL 746B |
| Relative Temp Index, Mech w/o impact | 120 | °C | UL 746B |
| PHYSICAL | Value | Unit | Standard |
| Mold Shrinkage on Tensile Bar, flow (2) | 0.2 - 0.5 | % | SABIC Method |
| Density | 1.35 | g/cm³ | ISO 1183 |
| Water Absorption, (23°C/sat) | 0.29 | % | ISO 62 |
| Moisture Absorption (23°C / 50% RH) | 0.12 | % | ISO 62 |
| Melt Volume Rate, MVR at 300°C/1.2 kg | 12 | cm³/10 min | ISO 1133 |
| OPTICAL | Value | Unit | Standard |
| Haze | NA | % | ASTM D 1003 |
| Refractive Index | NA | - | ISO 489 |
| ELECTRICAL | Value | Unit | Standard |
| Volume Resistivity | >1.E+15 | Ohm-cm | IEC 60093 |
| Surface Resistivity, ROA | >1.E+15 | Ohm | IEC 60093 |
| Dielectric Strength, in oil, 3.2 mm | 16 | kV/mm | IEC 60243-1 |
| Relative Permittivity, 50/60 Hz | 3 | - | IEC 60250 |
| Relative Permittivity, 1 MHz | 2.9 | - | IEC 60250 |
| Dissipation Factor, 50/60 Hz | 0.001 | - | IEC 60250 |
| Dissipation Factor, 1 MHz | 0.01 | - | IEC 60250 |
| Comparative Tracking Index | 150 | V | IEC 60112 |
| Comparative Tracking Index, M | 125 | V | IEC 60112 |
| FLAME CHARACTERISTICS | Value | Unit | Standard |
| UL Recognized, 94V-1 Flame Class Rating (3) | 1.5 | mm | UL 94 |
| Glow Wire Flammability Index 850°C, passes at | 1 | mm | IEC 60695-2-12 |
| Glow Wire Flammability Index 960°C, passes at | 3.2 | mm | IEC 60695-2-12 |
| Oxygen Index (LOI) | 34 | % | ISO 4589 |
| Source GMD, last updated:07/31/1997 | |||
| Parameter | ||
| Injection Molding | Value | Unit |
| Drying Temperature | 120 | °C |
| Drying Time | 2 - 4 | hrs |
| Maximum Moisture Content | 0.02 | % |
| Melt Temperature | 280 - 310 | °C |
| Nozzle Temperature | 270 - 290 | °C |
| Front - Zone 3 Temperature | 280 - 310 | °C |
| Middle - Zone 2 Temperature | 270 - 290 | °C |
| Rear - Zone 1 Temperature | 260 - 280 | °C |
| Hopper Temperature | 60 - 80 | °C |
| Mold Temperature | 80 - 110 | °C |
| Source GMD, last updated:07/31/1997 | ||
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For more information please download the datasheet |
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Sabic Lexan 1278R.pdf |
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