• Description for Dow 1547 HVIC

    Gray silicone RTV insulator coating. Imparts arc resistance and hydrophobicity.

    *See Terms of Use Below

    Application Type Pot, Encapsulate
    1 Part or 2 Part 1 Part
    Material Form Liquid
    Manufacturer Dow
    Chemistry Silicone
    Cure Method RTV
    Cure Time (min) 120 to 360
    Arc Resistance (sec) Arc resistance
  • Technical Data for Dow 1547 HVIC

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Liquid
    • Chemistry
    • Application Method
      • Brush - Dip
      • Spray
      • Dip
    • Cure Method
      • RTV (Room Temperature Vulcanization) - RTV
    Specifications
    Cure Specs
    Cure Time (min) 120 to 360
    Tack Free Time (min) 30 Test Method
    Material Resistance
    Arc Resistance (sec) Arc resistance
    Conductivity
    Dissipation Factor 0.10000, 0.06000 Test Method
    Dielectric Strength (V/mil) 450 (Volts/mm) Test Method
    Dielectric Constant 3.85, 3.33 Test Method
    Other Properties
    Specific Gravity 1.160 Test Method
    Flash Point (°F) 105.8
    % Solids (%) 80
    Business Information
    Shelf Life Details When stored at or below 32°C (90°F) this product has a shelf life of 12 months from date of manufacture. Refer to product packaging for “Use By” date.
    Shelf Life Type from date of manufacture
    Shelf Life (mon) 12
  • Best Practices for Dow 1547 HVIC

    *See Terms of Use Below

    1. Surface Preparation

      DOW CORNING 1547 HVIC should be applied in several coats over a clean, dry surface. Any surface previously coated with a silicone grease should be cleaned thoroughly before applying the coating.

    2. Application

      Before use, DOW CORNING 1547 HVIC should be thoroughly agitated on a paint shaker or can roller to ensure uniformity. DOW CORNING 1547 HVIC should be applied in several coats over a clean, dry surface. Any surface previously coated with a silicone grease should be cleaned thoroughly before applying the coating. Surfaces other than glass or porcelain may require use of a primer to ensure adhesion. Consult Dow Corning Technical Service and Development for primer recommendations. DOW CORNING 1547 HVIC Insulator Coating can be reapplied to previously coated surfaces after pressure water washing. The product is normally spray applied, but can be applied by brushing or dipping. An average dry thickness of 20mm (0.020 inch) is recommended on insulators. Several sprayed coats are needed to attain this average. Depending on temperature and humidity, full cure takes 2 to 6 hours. Additional coats can be applied after 20 to 30 minutes. For dilution, a high flash point >38°C (100°F) naphtha spirits solvent is recommended. Acceptable solvents include Kwik Dri Naphtha Spirits 66 from Ashland Chemical and Solvent 360 from Shell Oil. Equipment recommendations can be obtained from Dow Corning.

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Tack Free Time Test Methods
Tack Free Time Test Method
30 min CTM 0095
Dielectric Constant Test Methods
Dielectric Constant Test Method
3.85 CTM 0112
3.33 CTM 0112
Dielectric Strength Test Methods
Dielectric Strength Test Method
450 (Volts/mm) CTM 0114 at 50 mm
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.10000 CTM 0112
0.06000 CTM 0112
Specific Gravity Test Methods
Specific Gravity Test Method
1.160 CTM 0001A