PSU-FR
The base PSU resin possesses intrinsic flame retardancy (LOI ~30%, UL94 V-0). Building upon this foundation, flame-retardant grades of PSU are formulated with optimized designs to further enhance their flame retardancy rating, smoke density, and comparative tracking index (CTI). These specialized grades are engineered to comply with stringent standards in rail transit, electrical safety, and construction materials.
Technical Parameters
Item | PSU-FR-Standard | PSU-FR-Rail | PSU-FR-E&E |
Density (g/cm³) | 1.27 | 1.30 | 1.26 |
Tensile Strength (MPa) | 72 | 70 | 75 |
Flexural Strength (MPa) | 108 | 105 | 110 |
Flexural Modulus (GPa) | 2.7 | 2.7 | 2.8 |
Notched Izod (kJ/m²) | 6.5 | 6.0 | 7.0 |
HDT (°C, 1.82 MPa) | 175 | 173 | 176 |
Flame Retardant Rating（UL94） | V-0 (0.75 mm) | V-0 (0.5 mm) | V-0 (0.75 mm) |
LOI (%) | 32 | 34 | 32 |
GWIT / GWFI (°C, IEC 60695) | 800 / 960 | 825 / 960 | 800 / 960 |
Smoke Density (Ds, max, EN 45545-2) | < 300 | < 200 | < 250 |
CTI (V, IEC 60112) | 175 | 175 | 200 |
RoHS / REACH | ✓ | ✓ | ✓ |
EN 45545-2 | HL2 | HL3 (R1) | HL2 |
Features:
- Superior flame retardancy: UL94 V-0 at 0.5-0.75 mm, GWIT ≥ 800°C, GWFI ≥ 960°C
- Low smoke and low toxicity: smoke density (Ds, max) < 200, low smoke toxicity index, complies with EN 45545-2 HL3 (R1)
- High tracking resistance: CTI ≥ 175 V (IEC 60112) - suitable for high-voltage electrical parts
- Intrinsic halogen-free flame retardancy: no halogens, compliant with RoHS, REACH and similar environmental regulations
- Heat aging resistance: flame retardancy remains stable after long-term aging at 150-180°C
- Mechanical properties retained: flame-retardant modification does not significantly compromise base mechanical performance
- Easy processing: good flow and clean part appearance
Typical Applications:
1）Rail transit vehicle interiors, seat frames, wire troughs, and connectors
2）Insulation components and connectors for new energy vehicle (NEV) battery modules
3）Electrical switches, sockets, and wiring terminals
4）Fire-resistant core boards for building fire doors and cable trays
5）Fire-resistant structural components for aerospace
keywords: PSU-FR
classification: Product
The base PSU resin possesses intrinsic flame retardancy (LOI ~30%, UL94 V-0). Building upon this foundation, flame-retardant grades of PSU are formulated with optimized designs to further enhance their flame retardancy rating, smoke density, and comparative tracking index (CTI). These specialized grades are engineered to comply with stringent standards in rail transit, electrical safety, and construction materials.
Technical Parameters
Item | PSU-FR-Standard | PSU-FR-Rail | PSU-FR-E&E |
Density (g/cm³) | 1.27 | 1.30 | 1.26 |
Tensile Strength (MPa) | 72 | 70 | 75 |
Flexural Strength (MPa) | 108 | 105 | 110 |
Flexural Modulus (GPa) | 2.7 | 2.7 | 2.8 |
Notched Izod (kJ/m²) | 6.5 | 6.0 | 7.0 |
HDT (°C, 1.82 MPa) | 175 | 173 | 176 |
Flame Retardant Rating（UL94） | V-0 (0.75 mm) | V-0 (0.5 mm) | V-0 (0.75 mm) |
LOI (%) | 32 | 34 | 32 |
GWIT / GWFI (°C, IEC 60695) | 800 / 960 | 825 / 960 | 800 / 960 |
Smoke Density (Ds, max, EN 45545-2) | < 300 | < 200 | < 250 |
CTI (V, IEC 60112) | 175 | 175 | 200 |
RoHS / REACH | ✓ | ✓ | ✓ |
EN 45545-2 | HL2 | HL3 (R1) | HL2 |
Features:
- Superior flame retardancy: UL94 V-0 at 0.5-0.75 mm, GWIT ≥ 800°C, GWFI ≥ 960°C
- Low smoke and low toxicity: smoke density (Ds, max) < 200, low smoke toxicity index, complies with EN 45545-2 HL3 (R1)
- High tracking resistance: CTI ≥ 175 V (IEC 60112) - suitable for high-voltage electrical parts
- Intrinsic halogen-free flame retardancy: no halogens, compliant with RoHS, REACH and similar environmental regulations
- Heat aging resistance: flame retardancy remains stable after long-term aging at 150-180°C
- Mechanical properties retained: flame-retardant modification does not significantly compromise base mechanical performance
- Easy processing: good flow and clean part appearance
Typical Applications:
1）Rail transit vehicle interiors, seat frames, wire troughs, and connectors
2）Insulation components and connectors for new energy vehicle (NEV) battery modules
3）Electrical switches, sockets, and wiring terminals
4）Fire-resistant core boards for building fire doors and cable trays
5）Fire-resistant structural components for aerospace
DOWREN NEW MATERIAL (HENAN) CO.,LTD
TELL：Selina.Liu +86-0393-8993626 / +86 18137458807
ADD：150 meters north of the intersection of Zhongyuan Road and Pushang Road, Puyang City,Henan Province
EMAIL：dowren@dowren.com
WhatsApp (+86 18137458807)