Dow Dowsil 3-1944 RTV Coating

Dow Dowsil 3-1944 RTV Coating Datasheet
  • Description for Dow Dowsil 3-1944 RTV Coating

    Coating or adhesive with added UV indicator, good flowability, fast tack free time, good flame resistance, MIL A-46058 tested, Require atmospheric moisture to cure needing no expensive ovens, and various viscosity<br/>version faciliate different application methods.

    *See Terms of Use Below

    Brand Dowsil
    Application Type Adhesive, Coating, Gaskets
    1 Part or 2 Part 1 Part
    Material Form Liquid, Silicone elastomer
    Substrate Ceramics, Glass, Reactive metals, Plastics, Resins
    Industry Circuit board, Light Emitting Diodes (LEDs), PCB system assemblies, Smart Meters, E-Mobility Solutions, Smart Home Devices, Insulation, Headlamp assemblies, CRT module, Electronic equipment, Electronics, LCD module, Modules, PDP module, Power supplies, Most delicate components, Interconnections
    Manufacturer Dow
    Chemistry Silicone elastomer, Solventless
    Application Method Flow: Flow Coating
    Cure Method RTV, Atmospheric moisture, Heat, Room temp cure
    Cure Temperature (°C) Faster or lower, 20 to 25, 20 to 25
    Cure Time (min) 1,440
    Viscosity (cPs) 63,775, Good flowability, Self-leveling after dispensing
    Color Translucent
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Stress Relief Low stress
    Elastomeric Elastomer
    Key Specifications Mil-Spec (United States Military Standard): Mil I-46058C Amend 7, UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: UL 94 V-0; UL Flammability Classification, IPC (Association Connecting Electronics Industries): IPC-CC-830B; Agency Listing, UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 746E; Agency Listing , UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 746 and Mil Spec tested
  • Technical Data for Dow Dowsil 3-1944 RTV Coating

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Elastomer - Silicone elastomer
      • Liquid
    • Substrate
      • Ceramic - Ceramics
      • Glass
      • Metal - Reactive metals
      • Plastic - Plastics, Resins
      • Other - Laminates, Most common materials, Most common substrates, Low-surface energy surfaces
    • Industry
      • LED (Light-Emitting Diodes) - Light Emitting Diodes (LEDs)
      • E-Mobility Solutions
      • Headlamp - Headlamp assemblies
      • Electronics - Circuit board, CRT module, Electronic equipment, LCD module, Modules, PDP module, Power supplies, Interconnections, Most delicate components
      • Printed Circuit Board (PCB) - PCB system assemblies
      • Smart Meters
      • Smart Home Devices
      • Power Supplies
      • Industrial - Housings, Lids
      • Insulation
      • Other - Pin joint coverage, Solder joint coverage, Thin section encapsulation, Spot protection of other devices, Spot protection of pins
    • Chemistry
    • Application Method
      • Brush
      • Flow: Flow Coat - Flow Coating
      • Other - Syringe or needle
    • Cure Method
      • Room Temperature / Air Dry - Room temp cure
      • Moisture / Condensation Cure - Atmospheric moisture
      • Heat
      • RTV (Room Temperature Vulcanization) - RTV
    • Color
      • Translucent
    • Key Specifications
      • Mil-Spec (United States Military Standard): I-46058-C - Mil I-46058C Amend 7
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: V0 - UL 94 V-0; UL Flammability Classification
      • IPC (Association Connecting Electronics Industries): CC-830B - IPC-CC-830B; Agency Listing
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): 746E - UL 746E; Agency Listing
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): 746 - UL 746 and Mil Spec tested
    • Brand
      • Dowsil
    Specifications
    Cure Specs
    Cure Temperature (°C) Faster or lower, 20 to 25, 20 to 25
    Cure Time (min) 1,440
    Viscosity (cPs) 63,775, Good flowability, Self-leveling after dispensing
    Tack Free Time (min) Fast, 14, 0.50 Test Method
    Thixotropic Limited, Moderate
    Bond Strength
    General Bond Strength (psi) Good
    Peel Strength (piw) 3 (N/cm) Test Method
    Tensile Strength (psi) 325
    Material Resistance
    Flame Resistance Good
    Environmental Resistance Environmentally friendly
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Moisture/Humidity Resistance Moisture/humidity resistance
    Conductivity
    Dissipation Factor 0.00130, <0.00020 Test Method
    Dielectric Strength (V/mil) 525
    Dielectric Constant 2.67, 2.73 Test Method
    Volume Resistivity (O) 1.6e15 (ohms/cm)
    Hardness
    Stress Relief Low stress
    Shore A Hardness 36 Test Method
    Elastomeric Elastomer
    Elongation (%) 145
    Flexibility Soft
    Modulus (psi) 223 Test Method
    Other Properties
    Specific Gravity 1.030
    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) 12
    Not Good For
    Don't Use With Plastic, rubber
  • Best Practices for Dow Dowsil 3-1944 RTV Coating

    *See Terms of Use Below

    1. Surface Preparation

      All surfaces should be thoroughly cleaned and/or degreased with Dow Corning® brand OS Fluids, naphtha, mineral spirits, methyl ethyl ketone (MEK) or other suitable solvent. Solvents such as acetone or isopropyl alcohol (IPA) do not tend to remove oils well, and any oils remaining on the surface may interfere with adhesion. Light surface abrasion is recommended whenever possible, because it promotes good cleaning and increases the surface area for bonding. A final surface wipe with acetone or IPA is also useful. Some cleaning techniques may provide better results than others

      users should determine the best techniques for their particular applications.

    2. Mixing

      No mixing required

    3. Deairing/Degassing

      Automated airless dispense equipment can be used to reduce or avoid the need to de-air. If de-airing is required to reduce voids in the cured elastomer, consider a vacuum de-air schedule of >28 inches Hg for 10 minutes or until bubbling subsides.

    4. 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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Tack Free Time Test Methods
Tack Free Time Tack Free Temperature Test Method
Fast
14 min 25°C
0.50 min 60°C 15% RH
Peel Strength Test Methods
Peel Strength Type
3 (N/cm) 180 Degree Peel Strength
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.67 Dielectric constant, 100 Hz
2.73 Dielectric constant, 100 KHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00130 Dissipation factor, 100 Hz
<0.00020 Dissipation factor, 100 KHz
Modulus Test Methods
Modulus Test Method
223 psi Youngs Modulus
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method
36 Durometer