| UP 5690-W or-K POLYOL | UP 5690 ISOCYANATE | UP 5690 C | MIXED | ||
| Composition | Polyol | Isocyanate | Polyol | ||
| Mix ratio by weight | 100 | 100 | 0 - 50 | ||
| Aspect | liquid | liquid | liquid | liquid | |
| Colour | W= WhiteK= Black | Colourless | Milk white | AW/B/C=White AK/B/C=Black | |
| Viscosity at 23°C (mPa.s) | BROOKFIELD LVT | 1000 - 1500 | 140 - 180 | 4500 - 5000 | 500 - 700 |
| Viscosity at 40°C (mPa.s) | BROOKFIELD LVT | 400 - 600 | - | 2300 - 2500 | 300 - 500 |
| Specific gravity at 25°CSpecific gravity of cured
product at 23°C |
ISO 1675 :1975 ISO 2781 :1988 | 1.06- | 1.15- | 1.06- | -1.13 |
| Pot life at 25°C on 100 g (min) | 10 - 15 | ||||
| Pot life at 40°C on 100 g (min) | 5 - 7 |
PROCESSING CONDITIONS (Vacuum casting machine)
• Preheat isocyanate to 23 - 30°C in case of being stored below 20°C .
• Preheat polyol and part C to 40°C before using. It is necessary to stir the polyol until both color and aspect become homogeneous.
• Weigh the components according to the mixing ratio, put isocyanate into the upper cup, add part C in polyol to premix.
• Pour isocyanate into polyol (containing Part C) and mix for 1 - 2 minutes after degassing for 10 minutes seperately.
• Cast under vacuum in silicone mould preheated to 70°C.
• Demould after 60 - 90 minutes at 70°C (The more Part C is used, the longer demoulding time is needed)..
| A/B/C | 100/100/0 | 100/100/20 | 100/100/30 | 100/100/50 | ||
| Hardness | ISO 868 : 2003 | Shore D | 83 | 80 | 78 | 75 |
| Tensile strength | ISO 527 : 1993 | MPa | 35 | 30 | 28 | 25 |
| Flexural strength | ISO 178 : 2001 | MPa | 50 | 35 | 30 | 20 |
| Flexural modulus | ISO 178 : 2001 | MPa | 1300 | 1000 | 900 | 600 |
| Elongation at break | ISO 527 : 1993 | % | 50 | 60 | 65 | 90 |
| Impact strength(CHARPY)
Unnotched specimens |
ISO 179/2D : 1994 | KJ/m2 | 100 | 90 | 85 | 75 |
| A/B/C | 100/100/0 | 100/100/20 | 100/100/30 | 100/100/50 | ||
| Glass transition temperature (Tg) | (1) | °C | 85 | 78 | 75 | 65 |
| Linear shrinkage | % | 0.35 | 0.35 | 0.35 | 0.35 | |
| Demoulding time (2 - 3mm) at 70°C | min | 60 - 90 | ||||
Average values obtained on standard specimens / Hardening 16hr at 80°C after demoulding.
Handling Precautions
Normal health and safety precautions should be observed when handling these products :
Ensure good ventilation
Wear gloves, safety glasses and protective clothes.
For further information, please consult the product safety data sheet.
Storage Conditions
Shelf life is 6 months in a dry place and in original unopened containers at a temperature between 15 and 25° C. Any open can must be tightly closed under dry nitrogen blanket.
