Silicone Adhesives  
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 Contact in North America,
Europe, & Worldwide
318 Half Day Rd #189
Buffalo Grove, IL 60089, USA

 Phone: +1 (224) 436-0077 
Fax: +1 (630) 621-4198
 sales@UnitedAdhesives.com 

Contact in China and Asia 
High & New Technology
Industrial Development Park
6-1023 Tianzhu Rd.
Hefei City, China

  Phone: +86 139 5605 4600 
 china@UnitedAdhesives.com 

 

 

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Optical Encapsulants and Adhesives

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 following outstanding 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 180C.
-        High adhesion, high purity, moisture resistance
-        Reworkable for silicones.

Click the name of the adhesive in following Table to access its technical datasheet (TDS) in PDF file.



Name

OE 1582

OE 1581

OP 4035

OP 4036

Features / Advantages

Optically clear epoxy. 2-parts, cures at room temperature or can be accelerated at elevated temperatures. Anti-yellowing formulation

Optically clear epoxy. 1-part ready to apply, cures at elevated temperature. Anti-yellowing formulation

Optically clear silicone soft rubber, 1-part ready to apply. Transparency, non-yellowing. Compliance to thermal stress

Optically clear silicone tough rubber, 2-part ready to apply. Transparency, non-yellowing. Compliance to thermal stress

Typical Applications

Optical assembly. Encapsulate opto-electronic parts. Opto-electronics, photonics, LEDs. Solar panels. Electronics potting, etc.

Optical assembly. Encapsulate opto-electronic parts. Opto-electronics, photonics, LEDs. Solar panels. Electronics potting, etc.

Encapsulate opto-electronic parts. Protect from vibration, moisture & contaminants. Optical assembly. Opto-electronics, photonics, LEDs. Solar panels. Electronics potting.

Encapsulate opto-electronic parts. Protect from vibration, moisture & contaminants. Optical assembly. Opto-electronics, photonics, LEDs. Solar panels. Electronics potting.

Appearance

A - Water clear transparent
B - Water clear transparent

Water clear transparent

Water clear transparent

Water clear transparent

Rheology

Dispensable

Dispensable

Dispensable

Dispensable

Viscosity @25C (cps)

7,500 (as mixed)

3,470

4,600

4,900

Part / Component

A/B (2:1 wt mixing)

One Part

One Part

A/B (1:1 wt mixing)

Density (g/ml)

1.05

1.05

0.98

0.98

Work life (hr)

4 hrs

8 hrs

> 1 wk

> 1 wk

Cure Rate

80C 60 min
125C 15 min

85C 2 hrs
125C 30 min

125C 20 min
150C 10 min

80C 10 min
65C 20min

Shelf Life (days)

> 6 month
@ < 30C

> 6 month
@ -40C

> 6 month
@ < 4C

> 6 month
@ < 25C

Hardness

Shore D = 70

Shore D = 70

Shore A = 35

Shore A = 40

Refractive Index
(nD @ 25C)

1.564

1.564

1.41

1.41

% Transmission
(350 nm to 1000 nm)

95% to 99%

95% to 99%

97% to 99%

97% to 99%

Flexible Strength (FS) Tensile Strength (TS)

F.S. = 120 MPa

F.S. = 120 MPa

T.S. = 4.2 MPa

T.S. = 4.8 MPa

Volume Resistivity

(Ohm-cm)

> 10E+12

> 10E+12

> 10E+14

> 10E+14

Dielectric Strength (KV/mm)

> 500 V/mil

> 500 V/mil

> 480 V/mil

> 480 V/mil

Temperature Usage

-80C to 180C

-80C to 180C

-50C to 200C

-50C to 200C

   
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