Dow Dowsil SE 9157 Conformal Coating

Dow Dowsil SE 9157 Conformal Coating Datasheet
  • Description for Dow Dowsil SE 9157 Conformal Coating

    A one-part, translucent, fast tack-free medium viscosity conformal coating, Cures to soft, low stress elastomer, No added solvents, RT cure

    *See Terms of Use Below

    Brand Dowsil
    Application Type Conformal coating
    1 Part or 2 Part 1 Part
    Material Form Liquid, Silicone elastomer
    Industry Connectors, Rigid circuit boards, Sensors, E-Mobility Solutions, Smart Meters, Smart Home Devices, Printed circuits, Electronic components, PCB system assemblies, Flexible circuit boards, Spot protection on components, Most delicate components, Interconnections
    Manufacturer Dow
    Chemistry Silicone elastomer, No added solvents
    Application Method Flow: Flow coating
    Cure Method Moisture, RTV, RT cure, Atmospheric moisture
    Cure Temperature (°C) 20 to 25 RT
    Cure Time (min) 30, 4,320
    Viscosity (cPs) Medium, 5,675
    Color Translucent
    Ozone Resistance Ozone resistance
    Chemical Resistance Good
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Other Resistance Mechanical protection
    Stress Relief Low stress
    Repairability Excellent
  • Technical Data for Dow Dowsil SE 9157 Conformal Coating

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Elastomer - Silicone elastomer
      • Liquid
    • Substrate
      • Other - Other substrates, Most common substrates
    • Industry
      • E-Mobility Solutions
      • Electronics - Electronic components, Flexible circuit boards, Rigid circuit boards, Spot protection on components, Interconnections, Most delicate components
      • Connectors
      • Sensors
      • Smart Meters
      • Smart Home Devices
      • Printed Circuit Board (PCB) - Printed circuits, PCB system assemblies
    • Chemistry
    • Application Method
      • Dispenser - Robotic dispensing, Select coating
      • Brush
      • Spray
      • Flow: Flow Coat - Flow coating
      • Dip
      • Other - Syringe
      • Screen Print - Automated pattern
    • Cure Method
      • Room Temperature / Air Dry - RT cure
      • Moisture / Condensation Cure - Moisture, Atmospheric moisture
      • RTV (Room Temperature Vulcanization) - RTV
    • Color
      • Translucent
    • Brand
      • Dowsil
    Specifications
    Cure Specs
    Cure Temperature (°C) 20 to 25 RT Test Method
    Cure Time (min) 30, 4,320 Test Method
    Viscosity (cPs) Medium, 5,675 Test Method
    Tack Free Time (min) Fast, 6 Test Method
    Work / Pot Time (min) >86,400 Test Method
    Bond Strength
    Tensile Strength (psi) 90 Test Method
    Material Resistance
    Ozone Resistance Ozone resistance
    Chemical Resistance Good
    UV Resistance UV resistance
    Environmental Resistance Environmental protection
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Moisture/Humidity Resistance Moisture/humidity resistance
    Other Resistance Mechanical protection
    Conductivity
    Dissipation Factor 0.00060 Test Method
    Dielectric Strength (V/mil) 675 Test Method
    Dielectric Constant 2.70 Test Method
    Volume Resistivity (O) 4.0 E15 (ohm*cm) Test Method
    Hardness
    Stress Relief Low stress
    Repairability Excellent
    Shore A Hardness 25 Test Method
    Elongation (%) 180 Test Method
    Flexibility Soft
    Modulus (psi) 50 Test Method
    Other Properties
    Specific Gravity 0.995 Test Method
    Business Information
    Shelf Life Details Shelf life is indicated by the “Use Before” date found on the product label.
    Shelf Life Temperature (°F) 77
    Shelf Life (mon) 15
  • Best Practices for Dow Dowsil SE 9157 Conformal Coating

    *See Terms of Use Below

    1. Curing

      Time to cure is dependent on several variables including the method of application, film thickness, temperature and humidity. Tack-free time in the data table gives an indication of typical times until surface is dry enough to handle. Cure time for full cure are indications of time needed to develop full physical properties such as durometer, tensile strength or adhesion. These times, including full cure time, can be significantly improved by introducing mild heat of 60°C or less.

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    *See Terms of Use Below

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
20 to 25°C RT Typical for a 5-mil thickness sample in 180° peel., 1.0 mm thickness, 20°C, 55% RH.
Cure Time Test Methods
Cure Time Test Method
30 min Typical for a 5-mil thickness sample in 180° peel., 1.0 mm thickness, 20°C, 55% RH.
4,320 min
Tack Free Time Test Methods
Tack Free Time Tack Free Temperature Test Method
Fast 20 to 25°C RT
6 min 25°C These values are not intended for use in preparing specifications.
Viscosity Test Methods
Viscosity Test Method
Medium
5,675 cPs These values are not intended for use in preparing specifications.
Work / Pot Time Test Methods
Work / Pot Time Temperature
>86,400 min <29°C
Tensile Strength Test Methods
Tensile Strength Test Method
90 psi These values are not intended for use in preparing specifications.
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.70 @ 1MHz (JIS K 6249), These values are not intended for use in preparing specifications.
Dielectric Strength Test Methods
Dielectric Strength Test Method
675 V/mil JIS K 6249, These values are not intended for use in preparing specifications.
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00060 @ 1MHZ (JIS K 6249), These values are not intended for use in preparing specifications
Volume Resistivity Test Methods
Volume Resistivity Test Method
4.0 E15 (ohm*cm) JIS K 6249, These values are not intended for use in preparing specifications.
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method
25 Durometer, JIS, These values are not intended for use in preparing specifications.
Elongation Test Methods
Elongation Test Method
180 % These values are not intended for use in preparing specifications.
Modulus Test Methods
Modulus Test Method
50 psi Tensile Modulus,These values are not intended for use in preparing specifications.
Specific Gravity Test Methods
Specific Gravity Test Method
0.995 Cured, These values are not intended for use in preparing specifications.