Applications
Used by casting in silicone moulds for making transparent prototype parts until 10 mm thickness : headlights, glazier, any parts which have the same properties as PMMA, cristal PS, MABS…
Properties
• High transparency
• Good UV resistance
Physical Properties
| Composition | ISOCYANATE PX 521HT A | POLYOL PX 522HT B | MIXING | |
|---|---|---|---|---|
| Mixing ratio by weight | 100 | 55 | ||
| Aspect | liquid | liquid | liquid | |
| Colour | transparent | bluish | transparent* | |
| Viscosity at 25°C (mPa.s) | Brookfield LVT | 200 | 1,100 | 500 |
| Density of parts before mixing Density of the cured product | ISO 1675: 1985 ISO 2781: 1996 | 1.07 | 1.05 | 1.06 |
| Pot life at 25°C on 155g (min) | 5 – 7 |
Mechanical Properties At 23°c After Hardening
| Flexural modulus | ISO 178 : 2001 | MPa | 2.100 |
|---|---|---|---|
| Flexural strength | ISO 178 : 2001 | MPa | 105 |
| Tensile modulus | ISO 527 : 1993 | MPa | 2.700 |
| Tensile strength | ISO 527 : 1993 | MPa | 75 |
| Elongation at break in tension | ISO 527: 1993 | % | 9 |
| Charpy impact strength | ISO 179/1 eU : 1994 | kJ/m2 | 27 |
| Final hardness | ISO 868 : 2003 | Shore D1 | 87 |
Thermal and Specifiques Propertie
| Glass temperature transition (Tg) | ISO 11359 : 2002 | °C | 110 |
|---|---|---|---|
| Heat deflection temperature ( HDT 1.8 MPa) | ISO 75 Ae :1993 | °C | 100 |
| Maximal casting thickness | mm | 10 | |
| Demoulding time at 70°C (thickness 3 mm) | min. | 45 |
Contact us to discuss your PMMA-like, transparent project and discover how vacuum casting can meet your needs.
Our vacuum casting services deliver durable prototypes and low-volume parts.