Sabic LEXAN™ PC Resin EX7631T
SABIC Lexan EX7631T UV-stabilized PC
LEXAN™ Resin EX7631T is a premium UV-stabilized polycarbonate resin with a 10 MFR, engineered for exceptional outdoor durability and co-extrusion cap layers. It offers low plate-out for cleaner processing and significantly enhanced weatherability for long-lasting performance in demanding applications.
Associated Documents
TDS Americas
Typical property data
Physical Properties
- Specific Gravity: 1.2 (ASTM D792)
- Mold Shrinkage (flow, 3.2 mm): 0.96% (SABIC method)
- Melt Flow Rate (300°C / 1.2 kgf): 10.5 g/10 min (ASTM D1238)
- Density: 1.2 g/cm³ (ISO 1183)
Mechanical Properties
- Tensile Stress (yield, Type I, 50 mm/min): 70 MPa (ASTM D638)
- Tensile Stress (break, Type I, 50 mm/min): 60 MPa (ASTM D638)
- Tensile Strain (yield, Type I, 50 mm/min): 5.4% (ASTM D638)
- Tensile Strain (break, Type I, 50 mm/min): 88.1% (ASTM D638)
- Tensile Modulus: 2450 MPa (ASTM D638)
- Flexural Stress (yield, 1.3 mm/min, 50 mm span): 113 MPa (ASTM D790)
- Flexural Modulus: 2580 MPa (ASTM D790)
Impact Properties
- Izod Impact (notched, 23°C): 77 J/m (ASTM D256)
- Izod Impact (notched, -30°C): 73 J/m (ASTM D256)
- Instrumented Dart Impact Total Energy (23°C): 72 J (ASTM D3763)
Thermal Properties
- Vicat Softening Temperature (Rate B/50): 132°C (ASTM D1525)
- Vicat Softening Temperature (Rate B/120): 135°C (ISO 306)
- HDT (0.45 MPa, 3.2 mm, unannealed): 127°C (ASTM D648)
- HDT (1.82 MPa, 3.2 mm, unannealed): 116°C (ASTM D648)
- Coefficient of Thermal Expansion (CTE, -40°C to 40°C, flow): 6 × 10⁻⁵ 1/°C (ASTM E831)
- Coefficient of Thermal Expansion (CTE, -40°C to 40°C, xflow): 6.5 × 10⁻⁵ 1/°C (ASTM E831)
Injection Molding
- Drying Temperature: 100–110°C
- Drying Time: 2–3 hours
- Melt Temperature: 220–250°C
- Barrel Temperatures:
- Zone 1: 240–280°C
- Zone 2: 240–280°C
- Zone 3: 220–240°C
- Zone 4: 220–240°C
- Adapter Temperature: 220–240°C
- Die Temperature: 245–290°C
Features & Benefits
Superior UV & Weather Resistance
This LEXAN Resin EX7631T is highly stabilized against UV degradation, protecting products like outdoor panels and signage from yellowing and brittleness, extending service life and reducing replacement costs.
Engineered for Efficient Co-Extrusion
Specifically formulated as a cap layer material, it bonds effectively in multi-layer sheets, providing a durable, weatherable surface while allowing for cost-effective substrate materials underneath.
High Flow with Low Plate-Out
Its 10 MFR rating and low plate-out characteristic ensure smooth processing, cleaner equipment, and consistent quality in both sheet and profile extrusion, minimizing downtime and maintenance.