Covestro Makrolon® DQ5922 FR PC Resin
Makrolon DQ5922 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: 5.0 cm³/10 min (300 °C/1.2 kg, ISO 1133)
- Melt Viscosity:
- 1960 Pa·s (50 s⁻¹, 260 °C, ISO 11443-A)
- 680 Pa·s (50 s⁻¹, 300 °C, ISO 11443-A)
- 530 Pa·s (1000 s⁻¹, 260 °C, ISO 11443-A)
- 240 Pa·s (1000 s⁻¹, 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: 65 MPa (50 mm/min, ISO 527-1,-2)
- Yield Strain: 6% (50 mm/min, ISO 527-1,-2)
- Nominal Strain at Break: 35% (50 mm/min, ISO 527-1,-2)
- Stress at Break: 52 MPa (50 mm/min, ISO 527-1,-2)
- Strain at Break: 68% (50 mm/min, ISO 527-1,-2)
- Izod Notched Impact Strength: 9 kJ/m² (23 °C, 3 mm, ISO 21305)
- Ball Indentation Hardness: >120 N/mm² (ISO 2039-1)
Thermal Properties
- Temperature of Deflection Under Load:
- 121 °C (1.80 MPa, ISO 75-1,-2)
- 137 °C (0.45 MPa, ISO 75-1,-2)
- Vicat Softening Temperature: 142 °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:
- GWIT: 850 °C (0.75 mm, IEC 60695-2-13)
- GWFI: 960 °C (0.75 mm, IEC 60695-2-12)
Other Properties (23 °C)
- Density: 1190 kg/m³ (ISO 1183-1)
- Luminous Transmittance:
- 84% (1 mm, ISO 13468-2)
- 78% (2 mm, ISO 13468-2)
- 71% (3 mm, ISO 13468-2)
- 63% (4 mm, ISO 13468-2)
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:
- Drying Temperature: 120 °C
- Drying Time: 2–3 hours
- Moisture Content (max.): ≤0.02%
- Barrel Temperatures:
- Rear: 250–260 °C
- Middle: 270–280 °C
- Front: 280–290 °C
- Nozzle: 290–300 °C
Features & Benefits
Superior Flame Retardancy
It meets UL 94 V-0 (0.8mm) and 5VA (3.0mm) standards, ensuring safety in electrical/electronics and public spaces without compromising transparency.
Optimized Light Diffusion
Medium diffusion (e.g., 53% transmittance at 3mm) and controlled half-power angles (25°–53°) enable uniform lighting for LEDs and displays, reducing hotspots.
Thermal & Processing Stability
It withstands 120°C–141°C heat (Vicat/HDT) and flows smoothly at 280°C–320°C, ensuring easy injection molding or extrusion for complex parts.
Use & Applications
- LED Lighting: Diffusers and covers (even light spread, UL 94 compliance).
- Electrical Enclosures: Flame-retardant housings for switches/connectors.
- Transparent Shields: Safety visors or machine guards (impact-resistant, V-0 rated).
- Consumer Electronics: Light-guided panels for displays (precision diffusion).
- Extruded Profiles: UV-stabilized architectural glazing.
FAQs
Not stated in the supplied ISO TDS/SDS. Request a halogen-free/RoHS report. PFAS-free status is not confirmed.
Typical values only; preliminary datasheet, not a specification.
ISO TDS lists V-0 @ 0.8 mm and 5VA @ 3.0 mm. Verify colors/thickness on the current UL Yellow Card.
Low light diffusion, UV stabilized, flame retardant, injection/extrusion. Luminous transmittance 84% at 1 mm; half power angle 11° at 1 mm.
Makrolon® DQ5922 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 |
|---|---|---|---|---|---|---|---|
| DQ5942 FR | Medium diffusion; UV; FR | V-0 @0.8mm; 5VA @3.0mm | 5.0 cm³/10min | 120°C | Izod 7C | 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 |
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