Sabic LEXAN™ PC Resin 144R
SABIC PC Lexan 144R General Purpose Grade
LEXAN 144R is a versatile, high-flow polycarbonate resin designed for ease of processing. It features built-in mold release, a UL94 HB flame rating, and is compliant for food contact in most regions.
Typical property data
Physical Properties
- Specific Gravity: 1.2 (ASTM D792)
- Specific Volume: 0.83 cm³/g (ASTM D792)
- Density: 1.19 g/cm³ (ASTM D792)
- Water Absorption:
- 23°C/24hrs: 0.15% (ASTM D570)
- 23°C/Saturated: 0.35% (ASTM D570)
- Equilibrium at 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, Yield (Type I, 50 mm/min): 62 MPa (ASTM D638)
- Tensile Stress, Break (Type I, 50 mm/min): 68 MPa (ASTM D638)
- Tensile Strain, Yield (Type I, 50 mm/min): 7% (ASTM D638)
- Tensile Strain, Break (Type I, 50 mm/min): 130% (ASTM D638)
- Flexural Stress, Yield (1.3 mm/min, 50 mm span): 97 MPa (ASTM D790)
- Flexural Modulus (1.3 mm/min, 50 mm span): 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 (Type S): 577 kJ/m² (ASTM D1822)
- Falling Dart Impact (23°C): 169 J (ASTM D3029)
Thermal Properties
- Vicat Softening Temperature (Rate B/50): 154°C (ASTM D1525)
- HDT (0.45 MPa, Unannealed): 137°C (ASTM D648)
- HDT (1.82 MPa, Unannealed): 132°C (ASTM D648)
- Coefficient of Thermal Expansion (-40°C to 95°C, Flow): 6.84×10−56.84 \times 10^{-5}/°C (ASTM E831)
- Specific Heat: 1.25 J/g-°C (ASTM C351)
- Thermal Conductivity: 0.19 W/m-°C (ASTM C177)
- Relative Temperature Index (RTI):
- Electrical: 130°C (UL 746B)
- Mechanical with Impact: 130°C (UL 746B)
- 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: > 1×10171 \times 10^{17} Ω·cm (ASTM D257)
- Dielectric Strength (3.2 mm, In-Air): 14.9 kV/mm (ASTM D149)
- Relative Permittivity:
- 50/60 Hz: 3.17 (ASTM D150)
- 1 MHz: 2.96 (ASTM D150)
- Dissipation Factor:
- 50/60 Hz: 0.0009 (ASTM D150)
- 1 MHz: 0.01 (ASTM D150)
Flame Characteristics
- UL Flame Class Rating (UL94 HB): 1.47 mm (UL 94)
- Oxygen Index (LOI): 25% (ASTM D2863)
- Hot Wire Ignition (PLC): 2 (UL 746A)
- High Voltage Arc Track Rate (PLC): 2 (UL 746A)
- High Ampere Arc Ignition, Surface (PLC): 1 (UL 746A)
- Comparative Tracking Index (PLC): 2 (UL 746A)
Injection Molding
- 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 Ratio: 40–60%
- Vent Depth: 0.025–0.076 mm
Features & Benefits
Safe for Food Contact
The plastic particles meet stringent food contact regulations in most jurisdictions, providing peace of mind for manufacturers of food storage containers, kitchen utensils, and appliance components.
Easy & Fast Production
With its built-in mold release agent and excellent flow (11 MFR), this resin reduces cycle times, minimizes part sticking, and improves mold cleanliness. This translates directly to higher output and lower costs for your injection molding operations.
High Impact & Clarity
Offering outstanding toughness with high notched Izod impact strength and 88% light transmission, LEXAN 144R is perfect for applications requiring durable, see-through parts like protective covers, housings, and lenses.
Use & Applications
- Consumer & Household Goods
- Electrical & Enclosures
- Industrial & General Components
- Healthcare & Lifestyle