Dow JCR 6115

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Description for Dow JCR 6115

Low-modulus LED encapsulant; low viscosity; fast cure; 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	Dow
Chemistry	Silicone elastomer, Solvent-free
Cure Method	2-Part Cure, Heat
Cure Temperature (°C)	175
Cure Time (min)	Fast, 5.00
Viscosity (cPs)	Low
High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45
Light Refractive Index (RI)	1.4040, 1.3960, 1.3950

Best Practices for Dow JCR 6115

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Technical Data for Dow JCR 6115

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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

Specifications

Cure Specs

Cure Temperature (°C)	175
Cure Time (min)	Fast, 5.00
Viscosity (cPs)	Low
Work / Pot Time (min)	Very long
Mix Ratio	1:1 (by volume)

Bond Strength

Tensile Strength (psi)	0.4 (Mpa)

Material Resistance

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

Conductivity

Dielectric Strength (V/mil)	Durable

Hardness

Shore A Hardness	13
Elongation (%)	1
Flexibility	Flexible
Modulus (psi)	Low, 0.2 (Young's (MPa))

Other Properties

Light Refractive Index (RI)	1.4040, 1.3960, 1.3950	Test Method
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 Dow JCR 6115

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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 Dow JCR 6115

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Spec Engine^® Results
- Sylgard 182 Silicone Elastomer(Dow)
  A transparent; long pot life; two-part, 10:1 mix, heat cure elastomer, no exotherm during cure, repairable, good dielectric properties, flexible elastomer, low stress
- Sylgard 184 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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