Dupont JCR 6122

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Description for Dupont JCR 6122

Transparent, medium-modulus LED encapsulant; very low viscosity; very long working time.

Application Type	Encapsulant
1 Part or 2 Part	2-Part
Material Form	Liquid, Silicone elastomer
Industry	Light Emitting Diodes (LEDs)
Manufacturer	Dupont
Chemistry	Silicone elastomer, Solvent-free
Cure Method	2-Part Cure, Heat
Cure Temperature (°C)	150
Cure Time (min)	60
Viscosity (cPs)	Very low
Color	Transparent
High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45
Light Refractive Index (RI)	1.4040, 1.3960, 1.3940

Best Practices for Dupont JCR 6122

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Technical Data for Dupont JCR 6122

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Overview

Application Type
- Pottant / Encapsulant - Encapsulant
1 Part or 2 Part
- 2-Part
Material Form
- Elastomer - Silicone elastomer
- Liquid
Industry
- LED (Light-Emitting Diodes) - Light Emitting Diodes (LEDs)
Chemistry
- Solvent-Free
- Silicone - Silicone elastomer
Cure Method
- Heat
- 2-Part Cure
Color
- Clear / Transparent - Transparent

Specifications

Cure Specs

Cure Temperature (°C)	150
Cure Time (min)	60
Viscosity (cPs)	Very low
Work / Pot Time (min)	Very long
Mix Ratio	1:1 (by volume)

Bond Strength

Tensile Strength (psi)	0.5 (Mpa)

Material Resistance

High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45

Conductivity

Dielectric Strength (V/mil)	Durable

Hardness

Shore A Hardness	35
Elongation (%)	1
Flexibility	Flexible
Modulus (psi)	Medium, 1.1 (Young's (MPa))

Other Properties

Glass Transition Temp (Tg) (°C)	-120
Light Refractive Index (RI)	1.4040, 1.3960, 1.3940	Test Method
Coefficient of Thermal Expansion (CTE)	316 (ppm/°C)
Flash Point (°F)	212.0
% Solids (%)	100

Business Information

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)	6

Best Practices for Dupont JCR 6122

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1. Surface Preparation
  
  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.
2. Application
  
  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.
3. Clean-Up
  
  Dow Corning OS Fluids are recommended to clean cured or uncured silicone residue from application equipment.
4. Testing
  
  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 Dupont JCR 6122

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Spec Engine^® Results
- Dowsil 3-6121 Low Temperature Elastomer(Dow)
  Two part; 10:1 mix; minimal shrinkage; no exotherm during cure; no solvents or cure byproducts; deep section cure; repairable; good dielectric properties; flexible elastomer.
- Sylgard 186 Silicone Elastomer(Dow)
  Two part; 10:1 mix; minimal shrinkage; no exotherm during cure; no solvents or cure byproducts; deep section cure; repairable; good dielectric properties; flexible elastomer.
- Dowsil JCR 6126 WC Encapsulant(Dow)
  • Two-part • Thixotropic • Very long working time • Medium-modulus • Optically clear • Controlled flow • Seal and protect LEDs
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Closest Results from this Manufacturer
- OE-6636 Optical Encapsulant(Dupont)
  A two-part, solvent-less, heat cure, optical material.
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