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Norland Optical Adhesive 1665 is a yellow tinted liquid adhesive that will cure to a clear film when exposed to long wave ultraviolet and/or visible light. NOA 1665 is recommended for bonding glass to glass. Adhesion is
also good to CAB, polycarbonate and other plastics. The adhesive when fully cured is very rigid and brittle. NOA 1665 can be cured with ultraviolet light from 315nm to 395nm. Peak
absorption is 365nm. It can also be cured with visible light from 400nm to 450nm. Full cure requires 6 Joules/cm2. If used as a coating or exposed to air the adhesive will need to be cured under a nitrogen atmosphere to
prevent the surface from remaining tacky due to oxygen inhibition
Typical Properties of NOA 1665
| Refractive Index |
1.665 |
Temperature Range |
-15° to 100° C |
Viscosity @ 25C |
800-1000 cps |
| Shore D | 60 |
Keep NOA 1665 in a cool(5-22 ° C) dark place. If refrigerated, allow the adhesive to come to room temperature before using.
Care should be taken in handling the this material. The material Safety Data Sheet should be read for this product. Prolonged contact with skin should be avoided and affected areas should be washed thoroughly with copious amounts of soap and water. If adhesive gets into eyes, flush with water for 15 minutes and seek medical attention.
Spectral Transmission of NOA 1665
(thru 1 mil film thickness)
nm %T
600-2000 99.5
550 98.6
500 98.3
450 97.6
400 95.8
350 81.2
