Description
QSil 219 is a two-part, clear, liquid silicone which will cure at room temperature or at elevated temperatures. It has a low viscosity which allows for ease of flow around complex parts, providing electrical insulation and shock resistance. The chemical composition provides hydrolytic and reversion resistance. This material meets Mil-I-81550C (type II) standard.
KEY FEATURES
• Convenient 10:1 mixing ratio for use in automatic dispensing equipment or hand mixing
• Contains no solvents
• Non-yellowing catalyst system
| Uncatalyzed | |||||
| TEST | QSil 219 A | QSil 219 B | |||
| Appearance | Clear | Clear | |||
| Viscosity | 4,000 cps | 500 cps | |||
| Specific Gravity | 1.02 | 1.00 | |||
| Catalyzed | |
| MIX RATIO 10:1 by weight | |
| PROPERTY | RESULT |
| Catalyzed Color | Clear, Colorless |
| Viscosity | Easily pourable |
| Work life at 25°C | 5 – 8 hours |
| Cured Properties | |
| 60 minutes at 100°C/212ºF | |
| Durometer, Shore A | 40 |
| Tensile Strength | 750 psi |
| Elongation | 100 % |
| Linear Shrinkage | < 0.1 % |
| Refractive Index | 1.406 |
| Cure Schedule | |
| TEMPERATURE | TIME |
| 150ºC | 30 minutes |
| 100ºC | 60 minutes |
| 60ºC | 1800 minutes |
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