Covestro Makrolon® DQ5942 FR PC Resin
Makrolon DQ5942 FR Polycarbonate Granules Flame Retardant Grade
Makrolon® DQ5942 FR is a flame-retardant, UV-stabilized polycarbonate resin with medium light diffusion and optical clarity. Ideal for safety-critical applications, it combines transparency (79% transmittance at 1mm) with a balanced MVR of 5.0 cm³/10 min (300°C/1.2 kg).
Plastic Granules
Typical property data
Physical Properties (Rheological)
- Melt volume-flow rate: 5 cm³/10 min (300 °C/1.2 kg, ISO 1133)
- Melt viscosity (50 s⁻¹):
- 1840 Pa·s (260 °C, ISO 11443-A)
- 640 Pa·s (300 °C, ISO 11443-A)
- Melt viscosity (1000 s⁻¹):
- 500 Pa·s (260 °C, ISO 11443-A)
- 230 Pa·s (300 °C, ISO 11443-A)
Mechanical Properties (23 °C/50% r.h.)
- Tensile modulus: 2300 MPa (1 mm/min, ISO 527-1, -2)
- Yield stress: 66 MPa (50 mm/min, ISO 527-1, -2)
- Yield strain: 6% (50 mm/min, ISO 527-1, -2)
- Nominal strain at break: 44% (50 mm/min, ISO 527-1, -2)
- Stress at break: 53 MPa (50 mm/min, ISO 527-1, -2)
- Strain at break: 73% (50 mm/min, ISO 527-1, -2)
- Ball indentation hardness: >120 N/mm² (ISO 2039-1)
Thermal Properties
- Deflection temperature under load:
- 120 °C (1.80 MPa, ISO 75-1, -2)
- 135 °C (0.45 MPa, ISO 75-1, -2)
- Vicat softening temperature: 141 °C (50 N, 50 °C/h, ISO 306)
- Burning behavior:
- UL 94 V-0 (0.8 mm, UL 94)
- UL 94 5VA (3.0 mm, UL 94)
- Glow wire test (GWFI):
- 960 °C (0.75 mm, 1.5 mm, 3.0 mm, IEC 60695-2-12)
- Glow wire test (GWIT):
- 850 °C (0.75 mm, 1.5 mm, 3.0 mm, IEC 60695-2-13)
Other Properties (23 °C)
- Density: 1190 kg/m³ (ISO 1183-1)
- Luminous transmittance:
- 79% (1 mm, ISO 13468-2)
- 63% (2 mm, ISO 13468-2)
- 53% (3 mm, ISO 13468-2)
- 46% (4 mm, ISO 13468-2)
- Half power angle:
- 25° (1 mm, Covestro Test)
- 42° (2 mm, Covestro Test)
- 50° (3 mm, Covestro Test)
- 53° (4 mm, Covestro Test)
Processing and Drying Conditions
- Injection molding:
- Melt temperature: 290 °C (ISO 294)
- Mold temperature: 80 °C (ISO 294)
- Injection velocity: 200 mm/s (ISO 294)
- Drying conditions:
- Dry air temperature: 120 °C
- Drying time: 2–3 hours
- Maximum moisture content: ≤0.02%
- Recommended settings for barrel temperatures:
- Rear: 250–260 °C
- Middle: 270–280 °C
- Front: 280–290 °C
- Nozzle: 290–300 °C
Features & Benefits
Superior Flame Resistance
It achieves UL 94 V-0 rating (0.8mm) and 5VA (3.0mm), ensuring compliance in fire-sensitive sectors like electronics and transportation. Reduces ignition risks without toxic fumes.
Optical Clarity & Diffusion Control
It maintains 84% luminous transmittance (1mm) with a narrow 11° half-power angle. Perfect for LED covers, lenses, and displays needing precise light distribution and haze-free transparency.
High-Temperature Stability
It withstands 121°C under 1.8MPa load (ISO 75) and Vicat 142°C. Resists deformation in demanding environments like automotive lighting or outdoor enclosures.
Use & Applications
- Injection Molding: Thin-walled LED lamp covers, electrical connectors, and transparent housings requiring V-0 flame certification.
- Light Diffusion: Optical lenses, LED diffusers, and display panels leveraging controlled 11°–32° half-power angles.
- Extrusion: Profiles for safety glazing, protective barriers, and UV-resistant architectural components.
FAQs
Not stated in the supplied ISO TDS/SDS. Request a halogen-free/RoHS report. PFAS-free status is not confirmed.
ISO TDS lists V-0 @ 0.8 mm and 5VA @ 3.0 mm. Verify colors/thickness on the current UL Yellow Card.
ISO TDS lists V-0 @ 1.5 mm, V-2 @ 0.5 mm, 5VA @ 3.0 mm; opaque only. Verify exact colors and thickness on the current UL Yellow Card.
Medium light diffusion, UV stabilized, flame retardant, injection/extrusion. Luminous transmittance 79% at 1 mm; half power angle 25° at 1 mm, 42° at 2 mm.
Makrolon® DQ5942 FR Related Grades
Disclaimer: Grades below are potential alternatives for comparison only. Not direct drop-in replacements. Typical values from Covestro ISO TDS; verify UL94 colors/thickness on current UL Yellow Card. RoHS/REACH/halogen/PFAS status not confirmed unless report provided.
| Grade | Positioning | UL94 (ISO TDS) | MVR | HDT (1.80 MPa) | Notched Impact (23°C/3mm) | Color | UV / UL 746C f1 |
|---|---|---|---|---|---|---|---|
| DQ5922 FR | Low diffusion; UV; FR | V-0 @0.8mm; 5VA @3.0mm | 5.0 cm³/10min | 121°C | Izod 9C | N/A | Yes / N/A |
| DQ5962 FR | High diffusion; UV; FR | V-0 @0.8mm; 5VA @3.0mm | 5.0 cm³/10min | 123°C | Izod 12C | N/A | Yes / N/A |
| 6557 | Medium viscosity; UV; transparent | V-2 @1.5mm; V-0 @3.0mm | 10 cm³/10min | 124°C | Charpy 70P(C); Izod 65P | T/T/O | Yes / N/A |
| 6487 | Medium viscosity; 5VA; UV | V-0 @1.5mm; 5VA @3.0mm | 9.0 cm³/10min | 122°C | Charpy 70P(C); Izod 70P(C) | Opaque | Yes / N/A |
👉 Full Portfolio: Browse all 27+ grades on the Covestro Flame Retardant PC Resin Hub.