Dow JCR 6109

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Description for Dow JCR 6109

Translucent, low-modulus LED gel encapsulant; very long working time.

Application Type	Seal
1 Part or 2 Part	1-Part
Material Form	Liquid
Industry	Light Emitting Diodes (LEDs)
Manufacturer	Dow
Chemistry	Silicone, Solvent-free
Cure Method	Heat
Cure Temperature (°C)	70, 150
Cure Time (min)	60, 960
Viscosity (cPs)	3,900
Color	Translucent
High Temperature Resistance (°C)	200
Low Temperature Resistance (°C)	-45
Light Refractive Index (RI)	1.4240, 1.4140, 1.4130

Best Practices for Dow JCR 6109

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Technical Data for Dow JCR 6109

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Overview

Application Type
- Sealant - Seal
1 Part or 2 Part
- 1-Part
Material Form
- Liquid
Industry
- LED (Light-Emitting Diodes) - Light Emitting Diodes (LEDs)
Chemistry
- Solvent-Free
- Silicone
Cure Method
- Heat
Color
- Translucent

Specifications

Cure Specs

Cure Temperature (°C)	70, 150
Cure Time (min)	60, 960
Viscosity (cPs)	3,900
Work / Pot Time (min)	Very long

Material Resistance

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

Conductivity

Dielectric Strength (V/mil)	Durable

Hardness

Flexibility	Flexible
Modulus (psi)	Low

Other Properties

Light Refractive Index (RI)	1.4240, 1.4140, 1.4130	Test Method
Flash Point (°F)	320.0
% Solids (%)	100

Business Information

Shelf Life Details	Shelf life is indicated by the “Use Before” date found on the product label., For best results, Dow Corning one-part products require cold storage at or below -5°C (23°F). Special precautions must be taken to prevent moisture from contacting these materials. Containers should be kept tightly closed with head space minimized. Partially filled containers should be purged with dry air or other gases, such as nitrogen., Check the product label for specific storage conditions.
Shelf Life Type	From date of manufacture
Shelf Life (mon)	6

Best Practices for Dow JCR 6109

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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 6109

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Spec Engine^® Results
- Dowsil SE 1750 Adhesive(Dow)
  One-part, flowable adhesive with high tensile strength, Heat Cure, No added solvents, These adhesives generally have long working times so users can enjoy the greatest manufacturing flexibility and reduce waste.
- Dowsil SE 1714 Beige or Black(Dow)
  A one-part, beige or black, flowable adhesive with high tensile strength sealing lids and housings for ECUs, power modules.
- Dowsil X3-1598 Adhesive(Dow)
  Noncorrosive; self-priming; rapid heat cure; high strength; flowable; contains UV indicator for automated inspection.
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