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Optical Encapsulants
and Adhesives
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United Adhesives Inc. provides innovative solutions for optoelectronics
with optical-grade epoxy and silicone encapsulants, coatings,
adhesives, and sealants. They are applied in bonding and
potting fiber-optic cables, connectors and terminations,
LCD backlighting, displays, traffic and other lightings,
upgrading the vibration and shock resistance of electro-optic
assemblies, cementing and coating optical parts, potting
LED devices, optical replications, and coating or encapsulating
a wide variety of electro-optic and laser components. They
have the following features:
- Excellent light transmission characteristics.
- Superior non-yellowing properties or anti-yellowing
- Silicone based system can cure to low-stress elastomer
- Resistance to ozone and UV Degradation
- Broad operating at temperatures of -40 to 180°C.
- High adhesion, high purity, moisture resistance
- Reworkable for silicones.
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Name
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OE
1582
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OE
1581
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OP
4035
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OP
4047
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Features / Advantages
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Optically clear epoxy. 2-parts, cures at room temperature or can
be accelerated at elevated temperatures. Anti-yellowing
formulation
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Optically clear epoxy. 1-part ready
to apply, cures at elevated temperature. Anti-yellowing
formulation
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Optically clear silicone soft rubber,
1-part ready to apply. Transparency, non-yellowing.
Compliance to thermal stress
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Optically clear silicone tough rubber,
1-part ready to apply. Transparency, non-yellowing.
Compliance to thermal stress
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Typical Applications
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Optical assembly. Encapsulate opto-electronic
parts. Opto-electronics, photonics, LEDs. Solar panels. Electronics potting, etc.
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Optical assembly. Encapsulate opto-electronic
parts. Opto-electronics, photonics, LEDs. Solar panels. Electronics potting, etc.
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Encapsulate opto-electronic parts. Protect
from vibration, moisture & contaminants. Optical
assembly. Opto-electronics, photonics, LEDs. Solar
panels. Electronics
potting.
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Encapsulate opto-electronic parts. Protect
from vibration, moisture & contaminants. Optical
assembly. Opto-electronics, photonics, LEDs. Solar
panels. Electronics
potting.
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Appearance
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A - Water clear transparent
B - Water clear transparent
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Water clear transparent
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Water clear transparent
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Water clear transparent
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Rheology
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Dispensable
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Dispensable
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Dispensable
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Dispensable
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Viscosity @25C (cps)
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1,500 (as mixed)
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470
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4,600
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16,500
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Part / Component
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A/B (2:1 wt mixing)
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One Part
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One Part
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One Part
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Density (g/ml)
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1.05
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1.05
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0.98
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0.98
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Work life (hr)
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4 hrs
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8 hrs
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> 24 hrs
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> 24 hrs
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Cure Rate
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80C 60 min
125C 15 min
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85C 2 hrs
125C 30 min
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125C 20 min
150C 10 min
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125C 20 min
150C 10 min
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Shelf Life (days)
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> 6 month
@ < 30C
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> 6 month
@ -40C
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> 3 month
@ < 5C
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> 3 month
@ < 5C
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Hardness
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Shore D = 77
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Shore D = 70
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Shore A = 35
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Shore A = 47
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Refractive Index
(nD @ 25C)
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1.564
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1.564
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1.41
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1.41
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% Transmission
(350 nm to 1000 nm)
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95% to 99%
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95% to 99%
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97% to 99%
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97% to 99%
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Flexible Strength
(FS) Tensile Strength (TS)
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F.S. = 120 MPa
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F.S. = 120 MPa
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T.S. = 4.2 MPa
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T.S. = 5.5 MPa
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Volume Resistivity
(Ohm-cm)
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> 10E+12
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> 10E+12
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> 10E+14
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> 10E+14
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Dielectric Strength (KV/mm)
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> 500 V/mil
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> 500 V/mil
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> 480 V/mil
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> 480 V/mil
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Temperature Usage
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-80C to 180C
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-80C to 180C
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-50C to 200C
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-50C to 200C
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