RCT-155: Optical Coating
RCT-155 is a low-modulus UV curable coating specially designed for recoating in a mold. The
material was optimized for curing by both UV LED and UV Mercury lamps. A typical application is recoating for optical fibers. The adhesion level was optimized for the ease of release from re-coating molds.
Properties
| Liquid state | |
| RI liquid at 589 nm | 1.533 |
| Density, g/cm3 | 1.12 |
| Viscosity, cps @ 25°C | 3000 |
| color | Clear, yellowish |
| Cured state | |
| RI cured at 589 nm | 1.550 |
| RI cured at 950 nm | 1.540 |
| Adhesion to silica, 90° Peel, g/cm | 80 |
| Secant Modulus @2.5% | 34 |
| Young modulus, MPa | 52 |
| Tensile Strength, MPa | 7 |
| Elongation to Break | 100 |
| Linear shrinkage, % | 2.0 |
The product is supplied pre-filtered to below 1-micron particles.
Storage
- Avoid unnecessary exposure to ambient light and moisture.
- Long-term storage should be at ambient conditions of 15-30ºC. Do not refrigerate. The material may
show haze below 10ºC. It will clear up upon warming back to ambient conditions. - The shelf life is 12 months.
Application
Curing can be achieved by any source of UV at 300-400nm. Typically, a dose of 1000-2000 mJ/cm2 is necessary.
Keep the bottle closed at all times when not in use. The material is sensitive to light.
Safety: Refer to the SDS
Note: The above information is believed to be reliable, but it is not to be taken as a representation, warranty, or guarantee. Customers should perform their own QC, QA, and evaluation tests.
Updated: April 16, 2023
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