Product information "NOA 73 Optical Adhesive 10g syringe"
Refractive Index 1.56; 130 cps Viscosity at 25°C
Norland Optical Adhesive 73 ("NOA73 10g syringe") is an optically clear, liquid adhesive that quickly cures when exposed to long wavelength ultraviolet light. Since it is a one part system and 100% solids, it offers many advantages for bonding optical elements when the bonding surface can be activated with light energy. The use of NOA 73 eliminates premixing, drying or heat curing operations common to other optical adhesive systems.
NOA 73 has more flexibility than any of our other adhesives and is recommended for bonding delicate parts or parts where stress may be encountered. Its low viscosity gives it excellent flow characteristics which will allow it to give the thinnest possible bond line.
NOA 73 is cured by ultraviolet light, with maximum absorption between 350-380 nanometers. The recommended energy required for full cure is 4 Joules/sq. cm of long wavelength UV light. The cure is not inhibited by oxygen, and hence any areas in contact with air will cure to a non-tacky state.
Typical Properties of NOA 73
Elongation at Failure
Modulus of Elasticity (psi)
Tensile Strength (psi)
Hardness - Shore D
The shelf life of the liquid material is at least 4 months from the date of shipment. Material should be stored in a cool (5-22° C) dark place in the original container. If refrigerated,allow the adhesive to come to room temperature prior to use.
10 g Syringe
Viscosity at 25°C :
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