OAC-134: Low Refractive Index Optical Adhesive/Coating
OAC-134 is a low refractive index optical adhesive, developed for bonding and coating of glasses and plastics. Typical applications include bonding of lenses and waveguides in AR glasses, recoating of fiber-optic components, etc.
OAC-134 includes a proprietary adhesion promoter that improves adhesion, especially under wet conditions (e.g. 85C/85%RH test).
Properties
| Liquid state | |
| RI liquid at 589 nm | 1.341 |
| Density, g/cm3 | 1.66 |
| Viscosity, cps @ 25°C | 3100 |
| Cured state | |
| RI cured at 589 nm | 1.346 |
| RI cured at 950 nm | 1.341 |
| Adhesion to glass, 90° Peel, g/cm | 28 |
| Elastic modulus, MPa | 17 |
| Tensile Strength, MPa | 8 |
| Elongation at Break, % | 36 |
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 10-30ºC.
- The coating is supplied in glass bottles. Keep the container closed to avoid moisture penetration.
- The shelf life is 6 months.
Application
Typically, a dose of 1000-2000 mJ/cm2 is necessary. Any UV source in the range 300-400 nm can be used.
When used as an external coating, an inert atmosphere (or some other means of insulating the surface of the adhesive from the air) is required to prevent a tacky surface. When used between surfaces (e.g. in AR glasses) there is no need for an inert atmosphere.
Keep the bottle closed at all times when not in use. The material is sensitive to both light and moisture.
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.
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