S-Plastics Lexan EXRL0232 resin is EXRL0232 polycarbonate (PC) siloxane copolymer resin is a developmental transparent extrusion grade for food contact applications for sheet extrusion. This resin offers extreme low temperature (-40 °C) ductility. Developmental Lexan EXRL0232 resin is an FDA compliant product available in transparent colors and is an excellent candidate for extrusion/blow molding food contact applications.
| MECHANICAL | Value | Unit | Standard |
| Tensile Stress, yld, Type I, 50 mm/min | 58 | MPa | ASTM D 638 |
| Tensile Stress, brk, Type I, 50 mm/min | 64 | MPa | ASTM D 638 |
| Tensile Strain, yld, Type I, 50 mm/min | 5.8 | % | ASTM D 638 |
| Tensile Strain, brk, Type I, 50 mm/min | 131.4 | % | ASTM D 638 |
| Tensile Modulus, 50 mm/min | 2210 | MPa | ASTM D 638 |
| Flexural Stress, yld, 1.3 mm/min, 50 mm span | 94 | MPa | ASTM D 790 |
| Flexural Modulus, 1.3 mm/min, 50 mm span | 2210 | MPa | ASTM D 790 |
| Tensile Stress, yield, 50 mm/min | 57 | MPa | ISO 527 |
| Tensile Stress, break, 50 mm/min | 61 | MPa | ISO 527 |
| Tensile Strain, yield, 50 mm/min | 5.5 | % | ISO 527 |
| Tensile Strain, break, 50 mm/min | 124.9 | % | ISO 527 |
| Tensile Modulus, 1 mm/min | 2350 | MPa | ISO 527 |
| Flexural Stress, yield, 2 mm/min | 90 | MPa | ISO 178 |
| Flexural Modulus, 2 mm/min | 2150 | MPa | ISO 178 |
| IMPACT | Value | Unit | Standard |
| Izod Impact, notched, 23°C | 890 | J/m | ASTM D 256 |
| Izod Impact, notched, -30°C | 795 | J/m | ASTM D 256 |
| Instrumented Impact Total Energy, 23°C | 82 | J | ASTM D 3763 |
| Izod Impact, notched 80*10*4 +23°C | 56 | kJ/m² | ISO 180/1A |
| Izod Impact, notched 80*10*4 -30°C | 29 | kJ/m² | ISO 180/1A |
| Charpy 23°C, V-notch Edgew 80*10*4 sp=62mm | 74 | kJ/m² | ISO 179/1eA |
| Charpy -30°C, V-notch Edgew 80*10*4 sp=62mm | 24 | kJ/m² | ISO 179/1eA |
| THERMAL | Value | Unit | Standard |
| Vicat Softening Temp, Rate A/50 | 141 | °C | ASTM D 1525 |
| HDT, 1.82 MPa, 3.2mm, unannealed | 124 | °C | ASTM D 648 |
| CTE, -40°C to 95°C, flow | 7.15E-05 | 1/°C | ASTM E 831 |
| CTE, -40°C to 95°C, xflow | 7.93E-05 | 1/°C | ASTM E 831 |
| CTE, 23°C to 80°C, flow | 7.15E-05 | 1/°C | ISO 11359-2 |
| CTE, 23°C to 80°C, xflow | 7.93E-05 | 1/°C | ISO 11359-2 |
| Vicat Softening Temp, Rate B/50 | 141 | °C | ISO 306 |
| Vicat Softening Temp, Rate B/120 | 142 | °C | ISO 306 |
| HDT/Af, 1.8 MPa Flatw 80*10*4 sp=64mm | 118 | °C | ISO 75/Af |
| PHYSICAL | Value | Unit | Standard |
| Specific Gravity | 1.19 | - | ASTM D 792 |
| Mold Shrinkage, flow, 3.2 mm | 0.4 - 0.8 | % | S-Plastics Method |
| Melt Flow Rate, 300°C/1.2 kgf | 6 | g/10 min | ASTM D 1238 |
| Density | 1.19 | g/cm³ | ISO 1183 |
| Water Absorption, (23°C/sat) | 0.24 | % | ISO 62 |
| Moisture Absorption (23°C / 50% RH) | 0.09 | % | ISO 62 |
| Melt Volume Rate, MVR at 300°C/1.2 kg | 6 | cm³/10 min | ISO 1133 |
| Source GMD, last updated:09/12/2007 | |||
| Injection Molding | Value | Unit | |
| Drying Temperature | 120 | °C | |
| Drying Time | 3 - 4 | hrs | |
| Drying Time (Cumulative) | 48 | hrs | |
| Maximum Moisture Content | 0.02 | % | |
| Melt Temperature | 295 - 315 | °C | |
| Nozzle Temperature | 290 - 310 | °C | |
| Front - Zone 3 Temperature | 295 - 315 | °C | |
| Middle - Zone 2 Temperature | 280 - 305 | °C | |
| Rear - Zone 1 Temperature | 270 - 295 | °C | |
| Mold Temperature | 70 - 95 | °C | |
| Back Pressure | 0.3 - 0.7 | MPa | |
| Screw Speed | 40 - 70 | rpm | |
| Shot to Cylinder Size | 40 - 60 | % | |
| Vent Depth | 0.025 - 0.076 | mm | |
| Parameter | |||
| Sheet Extrusion | Value | Unit | |
| Drying Temperature | 110 - 120 | °C | |
| Drying Time | 3 - 4 | hrs | |
| Drying Time (Cumulative) | 48 | hrs | |
| Maximum Moisture Content | 0.02 | % | |
| Melt Temperature | 245 - 260 | °C | |
| Barrel - Zone 1 Temperature | 250 - 290 | °C | |
| Barrel - Zone 2 Temperature | 245 - 270 | °C | |
| Barrel - Zone 3 Temperature | 225 - 255 | °C | |
| Adapter Temperature | 225 - 255 | °C | |
| Die Temperature | 240 - 260 | °C | |
| Roll Stack Temp - Top | 75 - 115 | °C | |
| Roll Stack Temp - Middle | 80 - 125 | °C | |
| Roll Stack Temp - Bottom | 120 - 145 | °C | |
| Source GMD, last updated:09/12/2007 | |||
| Regrind: Levels of regrind up to about 25% do not adversely affect extrusion or thermoforming in small scale tests. Regrind may be used as long as acceptable sheet aesthetics and performance can be obtained. If regrind is to be used, parts formed from sheet should be tested to assure that they will perform adequately in their intended end-use environment. Efforts should be made to avoid using contaminated regrind. |
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| • PLEASE NOTE: Conditions were established using a down stack configuration for roll stack. | |||
| • Drying: LEXAN EXL resin must be dried before processing, even if vented barrels are used, in order to avoid material degradation )during the sheet extrusion process. |
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| • Screw Design: LEXAN EXL resins have been successfully extruded using either general purpose or barrier type screws with compression ratios in the range of 2.5 - 3.0. Transition between feed and metering sections should be gradual, occurring over |
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| 6 ? 8 screw diameters if possible. Screws with L/D ratios of 24:1 or greater are suggested. | |||
| • Temperature Profile: A reverse temperature profile (higher temperature settings at the feed section and decreasing toward the die) has been used successfully with this material to improve melt strength of the web between the die and rolls. |
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| THESE PROPERTY VALUES ARE NOT INTENDED FOR SPECIFICATION PURPOSES. | |||
| PLEASE CHECK WITH YOUR (LOCAL SALES OFFICE) FOR AVAILABILITY IN YOUR REGION | |||
| (1) Typical values only. Variations within normal tolerances are possible for various colors. All values are measured after at least 48 hours | |||
| storage at 23°C/50% relative humidity. All properties, except the melt volume and melt flow rates, are measured on injection molded samples. All samples tested under ISO test standards are prepared according to ISO 294. |
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| (2) Only typical data for selection purposes. Not to be used for part or tool design. | |||
| (3) This rating is not intended to reflect hazards presented by this or any other material under actual fire conditions. | |||
| (4) Internal measurements according to UL standards. | |||
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For more information please download the datesheet |
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S-Plastics Lexan EXRL0232.pdf |
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