Sabic LEXAN™ PC Resin EX7681T
Plastic Granules
SABIC Lexan EX7681T UV-stabilized
LEXAN™ Resin EX7681T is a high-performance, UV-stabilized polycarbonate resin engineered for exceptional durability. With a 10 MFR, it excels in co-extrusion and cap layer applications, offering low plate-out and superior long-term weatherability for outdoor sheet products.
Typical property data
Physical Properties
- Specific Gravity: 1.2 (ASTM D792)
- Density: 1.2 g/cm³ (ISO 1183)
- Melt Flow Rate (MFR): 10.5 g/10 min, at 300°C/1.2 kgf (ASTM D1238)
- Mold Shrinkage, Flow: 0.96% (SABIC method)
Mechanical Properties
- Tensile Stress (Yield): 70 MPa, at Type I, 50 mm/min (ASTM D638)
- Tensile Stress (Break): 60 MPa, at Type I, 50 mm/min (ASTM D638)
- Tensile Strain (Yield): 5.4%, at Type I, 50 mm/min (ASTM D638)
- Tensile Strain (Break): 88.1%, at Type I, 50 mm/min (ASTM D638)
- Tensile Modulus: 2450 MPa, at 5 mm/min (ASTM D638)
- Flexural Stress (Yield): 113 MPa, at 1.3 mm/min, 50 mm span (ASTM D790)
- Flexural Modulus: 2580 MPa, at 1.3 mm/min, 50 mm span (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)
- Heat Deflection Temperature (HDT):
- 127°C at 0.45 MPa, unannealed, 3.2 mm (ASTM D648)
- 116°C at 1.82 MPa, unannealed, 3.2 mm (ASTM D648)
- Coefficient of Thermal Expansion (CTE, -40°C to 40°C, Flow): 6.E-05, 1/°C (ASTM E831)
- Coefficient of Thermal Expansion (CTE, -40°C to 40°C, Cross-Flow): 6.5E-05, 1/°C (ASTM E831)
Injection Molding
- Drying Temperature: 100–110°C
- Drying Time: 2–3 hours
- Melt Temperature: 220–250°C
- Barrel Temperatures (Zones 1–4): 220–280°C
- Adapter Temperature: 220–240°C
- Die Temperature: 245–290°C
Features & Benefits
Superior UV & Weather Resistance
The enhanced UV stabilization in LEXAN EX7681T protects underlying materials, significantly extending the service life and maintaining aesthetic appeal of outdoor panels and structures.
High Impact Strength Across Temperatures
This resin maintains excellent toughness from room temperature down to -30°C, providing reliable durability and safety for applications exposed to impact or harsh environmental conditions.
Optimized for Clean Processing
With low plate-out characteristics, LEXAN Resin EX7681T ensures longer production runs, reduced downtime for maintenance, and higher quality surface finish in co-extrusion operations.