BASF Ultracur3D RG 35
BASF Ultracur3D RG 35
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Ultracur3D® RG 35 is a technical urethane photopolymer resin developed by BASF Forward AM, positioned by the manufacturer in the "Rigid" and "High Temp" categories. The medium-viscosity, highly reactive formulation targets rigid functional parts combining good dimensional stability, elevated thermal resistance and low water absorption.
The resin is available in several colours. The cured part exhibits a tensile modulus of 2600 MPa, a tensile strength of 80 MPa and a Shore D hardness of 85.
Thermal and electrical performance
Heat deflection temperature (HDT) reaches 83 °C at 0.45 MPa and 64 °C at 1.82 MPa. UL 94 fire rating at 1.5 mm is HB, complemented by a glow-wire flammability index (GWFI 650 °C / 2.0 mm to DIN EN 60695-2-11) and a dielectric strength of 37 kV/mm. Water absorption over 24 hours remains limited to 0.33 %, contributing to long-term dimensional stability of parts.
Mechanical behaviour and applications
Flexural strength reaches 110 MPa (modulus 2400 MPa) with an elongation at break of 6 %. Notched Izod impact gives 23 J/m at 23 °C and 11 J/m at -30 °C, with an unnotched Izod of 115 J/m and a notched Charpy of 0.6 kJ/m², consistent with a rigid material subject to low deformation. The resin is intended for automotive housings, jigs and assembly fixtures, moulds and inserts, and moulded electrical parts. ISO 10993 biocompatibility data are available on request.
Technical specifications
| Material | Technical urethane photopolymer |
|---|---|
| Category | Rigid / High Temp |
| Appearance | Available in several colours |
| Light source | DLP, LCD |
| Viscosity at 30 °C (cone/plate rheometer) | 600 mPa·s |
| Viscosity at 50 °C (cone/plate rheometer) | 150 mPa·s |
| Liquid resin density (ASTM D4052-18a) | 1.12 g/cm³ |
| Cured part density (ASTM D792) | 1.2 g/cm³ |
| Tensile modulus (ASTM D638, 50 mm/min) | 2600 MPa |
| Tensile strength (ASTM D638, 50 mm/min) | 80 MPa |
| Elongation at break (ASTM D638, 50 mm/min) | 6 % |
| Flexural modulus (ASTM D790) | 2400 MPa |
| Flexural strength (ASTM D790) | 110 MPa |
| Notched Izod at -30 °C (ASTM D256) | 11 J/m |
| Notched Izod at 23 °C (ASTM D256) | 23 J/m |
| Unnotched Izod at 23 °C (ASTM D256) | 115 J/m |
| Notched Charpy at 23 °C (ISO 179-1) | 0.6 kJ/m² |
| HDT at 0.45 MPa (ASTM D648) | 83 °C |
| HDT at 1.82 MPa (ASTM D648) | 64 °C |
| Fire rating UL 94 (1.5 mm) | HB |
| Glow-wire flammability test (DIN EN 60695-2-11) | GWFI: 650 °C / 2.0 mm |
| Dielectric strength (DIN EN 60243-1) | 37 kV/mm |
| Shore D hardness (ASTM D2240) | 85 |
| Water absorption 24 h (ASTM D570) | 0.33 % |
| Biocompatibility (ISO 10993) | Data available on request |
Compatibility
- Vat photopolymerisation processes
- DLP and LCD systems
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