• Description for Dow JCR 6109

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

    *See Terms of Use Below

    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
  • Technical Data for Dow JCR 6109

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Liquid
    • Industry
      • LED (Light-Emitting Diodes) - Light Emitting Diodes (LEDs)
    • 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

    *See Terms of Use Below

    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.

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Light Refractive Index (RI) Test Methods
Light Refractive Index (RI) Test Method
1.4240 Cures at 633 nm
1.4140 Cured at 1321 nm
1.4130 Cured at 1554 nm