Application Type Encapsulants 1 Part or 2 Part 2 Part Material Form Liquid, Silicone elastomer Industry Light Emitting Diodes (LEDs), Displays Manufacturer Dow Chemistry Silicone elastomer, Solvent-free Cure Method Heat, Base/catalyst Cure Temperature (°C) 150 Cure Time (min) 60 Viscosity (cPs) Thixotropic, 86,400, 91,800 Color Translucent High Temperature Resistance (°C) 200 Low Temperature Resistance (°C) -45 Light Refractive Index (RI) 1.4040, 1.3960, 1.3950
Technical Data for Dow JCR 6126 W/C
- Pottant / Encapsulant - Encapsulants
1 Part or 2 Part
- 1 Part or 2 Part - 2 Part
- Part A Name - Base
- Part B Name - Cat
- Elastomer - Silicone elastomer
- LED (Light-Emitting Diodes) - Light Emitting Diodes (LEDs)
- 2-Part Cure - Base/catalyst
Cure Temperature (°C) 150 Cure Time (min) 60 Viscosity (cPs) Thixotropic, 86,400, 91,800 Work / Pot Time (min) Very long Mix Ratio 10:1 (by volume)
Tensile Strength (psi) 1.8 (Mpa)
High Temperature Resistance (°C) 200 Low Temperature Resistance (°C) -45
Dissipation Factor 0.00090 Test Method Dielectric Strength (V/mil) Durable, 600 Dielectric Constant 2.80 Test Method Volume Resistivity (O) 3.4E15 (ohm*cm)
Shore A Hardness 26 Test Method Elongation (%) 3 Flexibility Flexible Modulus (psi) Medium, 0.7 (Young's (MPa))
Glass Transition Temp (Tg) (°C) -121 Light Refractive Index (RI) 1.4040, 1.3960, 1.3950 Test Method Coefficient of Thermal Expansion (CTE) 300 (ppm/°C) Flash Point (°F) 212.0 % Solids (%) 100
Shelf Life Details Shelf life is indicated by the “Use Before” date found on the product label., Dow Corning two-part products should be stored at or below 25°C (77°F). Containers should be kept tightly closed at all times to extend shelf life., Check the product label for specific storage conditions. Shelf Life Type From date of manufacture Shelf Life (mon) 9
Best Practices for Dow JCR 6126 W/C
Surfaces should be clean and dry. Recommended cleaning methods include Dow Corning® brand OS Fluids, naphtha, mineral spirits, methyl ethyl ketone (MEK) or other suitable solvent. Rougher surfaces tend to promote adhesion of silicones to other surfaces.
These products are also compatible with commercially available equipment and industry standard processes. These materials can be dispensed or molded depending on the product and application.
Dow Corning OS Fluids are recommended to clean cured or uncured silicone residue from application equipment.
If a substrate or material is questionable with respect to potentially causing inhibition of cure, it is recommended that a small scale compatibility test be run to ascertain suitability in a given application. The presence of liquid or uncured product at the interface between the questionable substrate and the cured silicone indicates incompatibility and inhibition of cure.
Comparable Materials for Dow JCR 6126 W/C
Spec Engine® Results
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Dielectric Constant Test Methods
|Dielectric Constant||Test Method|
Dissipation Factor Test Methods
|Dissipation Factor||Test Method|
Shore A Hardness Test Methods
|Shore A Hardness||Shore Hardness Test Method|
Light Refractive Index (RI) Test Methods
|Light Refractive Index (RI)||Test Method|
|1.4040||Cures at 633 nm|
|1.3960||Cured at 1321 nm|
|1.3950||Cured at 1554 nm|