Sabic LEXAN™ PC Resin 141
SABIC PC Lexan 141 General Purpose Grade
LEXAN 141 is a versatile 11 MFR polycarbonate resin, UL94 HB rated. It delivers an exceptional balance of high impact strength, clarity, and thermal resistance.
Typical property data
Physical Properties
- Specific Gravity: 1.2 (ASTM D792)
- Density: 1.19 g/cm³ (ASTM D792)
- Water Absorption (24 hrs, 23°C): 0.15% (ASTM D570)
- Water Absorption (Saturated, 23°C): 0.35% (ASTM D570)
- Water Absorption (Equilibrium, 100°C): 0.58% (ASTM D570)
- Mold Shrinkage (flow, 3.2 mm): 0.5–0.7% (SABIC Method)
- Melt Flow Rate (300°C/1.2 kgf): 10.5 g/10 min (ASTM D1238)
Mechanical Properties
- Tensile Stress at Yield: 62 MPa (ASTM D638)
- Tensile Stress at Break: 68 MPa (ASTM D638)
- Tensile Strain at Yield: 7% (ASTM D638)
- Tensile Strain at Break: 130% (ASTM D638)
- Flexural Stress at Yield: 96 MPa (ASTM D790)
- Flexural Modulus: 2340 MPa (ASTM D790)
- Rockwell Hardness (M Scale): 70 (ASTM D785)
- Rockwell Hardness (R Scale): 118 (ASTM D785)
- Taber Abrasion (CS-17, 1 kg): 10 mg/1000 cycles (ASTM D1044)
Impact Properties
- Izod Impact, Unnotched (23°C): 3204 J/m (ASTM D4812)
- Izod Impact, Notched (23°C): 801 J/m (ASTM D256)
- Tensile Impact Strength: 577 kJ/m² (ASTM D1822)
- Falling Dart Impact (23°C): 169 J (ASTM D3029)
- Instrumented Dart Impact Energy at Peak (23°C): 63 J (ASTM D3763)
Thermal Properties
- Vicat Softening Temperature (Rate B/50): 154°C (ASTM D1525)
- Heat Deflection Temperature (HDT), Unannealed at 0.45 MPa: 137°C (ASTM D648)
- Heat Deflection Temperature (HDT), Unannealed at 1.82 MPa: 132°C (ASTM D648)
- Coefficient of Thermal Expansion (CTE, -40°C to 95°C, Flow): 6.84 × 10⁻⁵ 1/°C (ASTM E831)
- Specific Heat: 1.25 J/g-°C (ASTM C351)
- Thermal Conductivity: 0.27 W/m-°C (ASTM C177)
- Relative Temperature Index (Electrical, Mechanical with Impact, Mechanical without Impact): 130°C (UL 746B)
Optical Properties
- Light Transmission (2.54 mm): 88% (ASTM D1003)
- Haze (2.54 mm): 1% (ASTM D1003)
- Refractive Index: 1.586 (ASTM D542)
Electrical Properties
- Volume Resistivity: >1 × 10¹⁷ Ω∙cm (ASTM D257)
- Dielectric Strength (in air, 3.2 mm): 14.9 kV/mm (ASTM D149)
- Relative Permittivity (50/60 Hz): 3.17 (ASTM D150)
- Relative Permittivity (1 MHz): 2.96 (ASTM D150)
- Dissipation Factor (50/60 Hz): 0.0009 (ASTM D150)
- Dissipation Factor (1 MHz): 0.01 (ASTM D150)
Flame Characteristics
- UL Recognized Flame Class Rating: UL94 HB for 0.71 mm (UL 94)
- UV-Light and Water Exposure/Immersion: F2 (UL 746C)
- Hot Wire Ignition (HWI): PLC 2 (UL 746A)
- High Voltage Arc Track Rate (HVTR): PLC 2 (UL 746A)
- High Ampere Arc Ignition (HAI): PLC 1 (UL 746A)
- Comparative Tracking Index (CTI): PLC 2 (UL 746A)
Injection Molding Parameters
- Drying Temperature: 120°C
- Drying Time: 3–4 hours; cumulative: 48 hours
- Maximum Moisture Content: 0.02%
- Melt Temperature: 295–315°C
- Nozzle Temperature: 290–310°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
Features & Benefits
Superior Impact Resistance & Toughness
With an exceptional notched Izod impact of 801 J/m, LEXAN™ 141 withstands sudden impacts and rough handling, reducing part breakage and ensuring product longevity in demanding environments.
Excellent Clarity and Light Transmission
This resin offers 88% light transmission with low haze, providing crystal-clear visibility. It’s ideal for lenses, covers, and displays where optical quality and an attractive appearance are critical.
High Heat Resistance & Stability
Featuring a Heat Deflection Temperature of 137°C, SABIC LEXAN 141 maintains its structural integrity under elevated temperatures, ensuring reliable performance in applications exposed to heat or hot environments.
Use & Applications
- Consumer Electronics Housings and Components
- Automotive Interior Trim and Components
- Transparent Covers, Shields, and Lenses
- Lighting Components and Diffusers
- Various Durable Goods and Appliances