| PART APX 245 | PART B PX 245 – 245/L | MIXING | |||
| Composition | ISOCYANATE | POLYOL | |||
| Mixing ratio by weight | 100 | 40 | |||
| Aspect | liquid | liquid | liquid | ||
| Colour | PX 245/BPX 245/LB | grey | bluishcolourless | off-white | |
| Viscosity at 25°C (mPa.s) | BROOKFIELD LVT | 800 | 1,000 | 2,200 (2) | |
| Specific gravity at 25°CSpecific gravity at 23°C | ISO 1675 :1985ISO 2781 :1996 | 1.34- | 1.10- | -1.22 | |
| Pot life at 25°C on 140g (min.) | PX 245PX 245/L | 4 8 | |||
Vacuum Casting Processing Conditions
• Heat both parts (isocyanate and polyol) at 23°C in case of storage at low temperature.
• Important : Shake vigorously part A before each weighing.
• Weigh the both parts.
• After degasing for 10 minutes under vacuum mix for
1 minute with PX 245
2 minutes with PX 245/L
• Cast under vacuum in a silicone mold, previously heated at 70°C.
• Demould after 30 minutes minimum at 70°C (allow the part to cool down before demoulding).
Handling Precautions
Normal health and safety precautions should be observed when handling these products:
• ensure good ventilation
• wear gloves and safety glasses
For further information, please consult the product safety data sheet.
| Flexural modulus of elasticity | ISO 178 :2001 | MPa | 4,500 | |
| Flexural strength | ISO 178 :2001 | MPa | 150 | |
| Tensile strength | ISO 527 :1993 | MPa | 85 | |
| Elongation at break in tension | ISO 527 :1993 | % | 3 | |
| Charpy impact strength | ISO 179/1eU :1994 | kJ/m2 | 30 | |
| Hardness | - at 23°C - at 80°C | ISO 868 :2003 | Shore D1 | 85 80 |
| Glass transition temperature (1) | ISO 11359 : 2002 | °C | 95 |
| Heat deflection temperature (1) | ISO 75Ae :2004 | °C | 92 |
| Linear shrinkage (1) | mm/m | 2 | |
| Maximal casting thickness | mm | 5 | |
| Demoulding time at 70°C | PX 245 PX 245/L | min. | 45 60 |
