Gelest has a successful history of developing optical, reprographic, and gel formulations. Gelest now offers new pre-formulated optical encapsulants and optical hard coating materials.
A thin film optical coating deposition on an optic imparts different behaviors. Silicone gels and elastomers as cladding/sealing materials have high optical transmission. Optical coating materials containing silicon can be modified to have refractive indices matching those of the substrate.
See specific product information in the Microfluidics technical guide.
Optical Grade Silicone Encapsulants
Mix Ratio 1:1, 2-Part Platinum Addition
| Product Code | Refractive Index | Tensile Strength (MPa) | Elongation (%) | Durometer (A) | Viscosity Mixed (cSt) | Specific Gravity | Cure Time/Temp | Potlife (hr) |
|---|---|---|---|---|---|---|---|---|
| Gelest OE39 (PP2-OE39) | 1.39 | 0.10 | 212 | 13 | 4,163 | 1.13 | 2h/80 °C | 2 |
| Gelest OE41 (PP2-OE41) | 1.41 | > 2 | 140-200 | 15-30 | 1,750-2,500 | -- | 4h/80 °C | 18 |
| Gelest OE42 (PP2-OE42) | 1.42 | > 1.5 | 90-150 | 10-25 | 1,500-2,000 | -- | 4h/80 °C | 18 |
| Gelest OE43 (PP2-OE43) | 1.43 | > 1.5 | 75-100 | 5-15 | 800-1,500 | -- | 4h/80 °C | 18 |
| Gelest OE46 (PP2-OE46) | 1.46 | 0.25 | 30-50 | 10-20 | 1,500-2,500 | 1.05 | 4h/80 °C | 18 |
| Gelest OE46.1 (PP2-OE46.1) | 1.46 | 0.55 | 65-75 | 30-45 | 15,000 | 1.19 | 4h/80 °C | 18 |
| Gelest OE46.2 (PP2-OE46.2) | 1.46 | 1-1.5 | 200-250 | 45-50 | 30,000 | 1.22 | 4h/80 °C | 18 |
| Gelest OE50 (PP2-OE50) | 1.49 | 0.13 | 160 | 11 | 3,819 | 1.07 | 4h/55 °C | >4 |
See specific product information in the Optical Materials technical guide.
Optical Grade Silicone Hard Resin Coatings
1-Part
| Product Code | Refractive Index | Hardness | Viscosity (cSt) | Flash Point (°C) | Specific Gravity | Solids (wt %) | Cure Time/Temp |
|---|---|---|---|---|---|---|---|
| Optisil® 155A1 (PP1-OS155A1) | 1.55 | -- | 3-5 | 35 | 0.95 | 10 | 1h/25 °C |
| Optisil® 155B2 (PP1-OS155B2) | 1.54-1.56 | 120 R | 3-5 | 35 | 0.95 | 20 | 1h/25 °C |
| Optisil® 156A1 (PP1-OS156A1) | 1.56 | -- | 3-5 | 35 | 0.92 | 10 | 1h/25 °C |
| Optisil® 157A1 (PP1-OS157A1) | 1.57 | -- | 3-5 | 35 | 0.92 | 10 | 1h/25 °C |
| Optisil® 157B2 (PP1-OS157B2) | 1.56-1.58 | 110 R | 3-5 | 35 | 0.92 | 20 | 1h/25 °C |
| Optisil® 158A1 (PP1-OS158A1) | 1.58 | -- | 3-5 | 35 | 0.92 | 10 | 1h/25 °C |
| Optisil® 159A1 (PP1-OS159A1) | 1.59 | -- | 3-5 | 35 | 0.92 | 10 | 1h/25 °C |
| Optisil® 164A1 (PP1-OS164A1) | 1.64 | -- | 2-3 | 35 | 0.95 | 10 | 1h/25 °C |