Dow HV 1860/120 Datasheet Dow HV 1860/120

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  • Description for Dow HV 1860/120

    Suitable for bonding high temperature peroxide cured silicone rubbers; remains active over several hours after application; low toxicity formulation.

    *See Terms of Use Below

    Application Type Primer for addition cured silicone rubbers
    1 Part or 2 Part 1-Part
    Material Form Liquid
    Substrate Ceramic, Glass, Metals, Resin, Silicone Rubbers, Composites
    Manufacturer Dow
    Chemistry Volatile siloxanes
    Cure Method Air dry, Solvent
    Viscosity (cPs) 1 (mPa.s)
    Color Red, Colorless
    Can Be Used In Conjunction With These Materials Addition cured silicone rubbers
  • Technical Data for Dow HV 1860/120

    • Application Type
      • Primer - Primer for addition cured silicone rubbers
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Liquid
    • Substrate
    • Industry
      • Other - High voltage arrestors
    • Chemistry
      • Other - Volatile siloxanes
    • Application Method
      • Brush
      • Spray
      • Dip
    • Cure Method
      • Room Temperature / Air Dry - Air dry
      • Solvent
    • Color
      • Clear / Transparent - Colorless
      • Red
    • Can Be Used In Conjunction With These Materials
      • Silicones - Addition cured silicone rubbers
    Cure Specs
    Viscosity (cPs) 1 (mPa.s) Test Method
    Dry Time (min) 15 to 90
    Dielectric Strength (V/mil) Insulator composites
    Other Properties
    Specific Gravity 0.820 Test Method
    Flash Point (°F) 80.6 Test Method
    % Solids (%) 5.0
    Business Information
    Shelf Life Details When stored at or below 25°C (77°F) in the original unopened containers, this product has a usable life of 450 days from the date of production. This material should be stored in a warehouse suitable for flammable materials., Containers should be kept tightly sealed when not in use. The primer hydrolyzes upon contact with air moisture, and prolonged exposure will reduce or destroy its effectiveness., Once hydrolyzed, indicated by a milky appearance, the material cannot be reclaimed, and will contaminate any unreacted primer.
    Shelf Life Type from the date of production
    Shelf Life (mon) 4
  • Best Practices for Dow HV 1860/120

    *See Terms of Use Below

    1. Surface Preparation

      Thoroughly clean and degrease the surface using a scouring pad, or a coarse lint-free cloth. Rinse all cleaning agents off the surface with acetone, MEK or isopropanol. Allow the surface to dry.

      Alternatively, aqueous degreasing with steam or hot water can be used to effectively prepare surfaces. Rinse with demineralised water and allow to dry thoroughly. Ensure no residues are left on the surface.

    2. Application

      Apply a thin coating of DOW CORNING HV 1860/120 Primer by dipping, brushing or spraying. In most cases a thin primer film will give the best adhesion. Film thickness can be roughly estimated by appearance, the thicker the film the stronger the white tint. If cracks appear in the chalked film, the coating applied was too heavy. In this case cleaning of the prime coat is recommended, then a second coat applied.

    3. Curing

      At normal temperature and humidity conditions (50% R.H. and room temperature) the primer should be allowed to air dry for 15 to 90 minutes. Low humidity will mean longer drying times. Primer which is allowed to overcure will result in poor adhesion, under normal conditions this should be no longer than 6 hours.

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Viscosity Test Methods
Viscosity Test Method Temperature
1 (mPa.s) ASTM D1084B 23°C
Flash Point Test Methods
Flash Point Test Method
27.0°C ASTM D56
Specific Gravity Test Methods
Specific Gravity Test Method
0.820 ASTM D1298