Dow Dowsil 3-4150 Dielectric Gel

Dow Dowsil 3-4150 Dielectric Gel Datasheet
  • Description for Dow Dowsil 3-4150 Dielectric Gel

    A two-part, transparent green, 1:1 mix ratio, fast RT cure gel

    *See Terms of Use Below

    Brand Dowsil
    Application Type Encapsulating, Seal, Potting
    1 Part or 2 Part 2 Part
    Material Form Gel
    Industry Circuits, Smart Meters, E-Mobility Solutions, Smart Home Devices, Electronics, Optoelectronics, Interconnections
    Manufacturer Dow
    Chemistry Silicone, Solvent-free
    Cure Method 2-Part Cure, Room temperature cure
    Cure Temperature (°C) 20 to 25 RT, 25
    Cure Time (min) Fast, 90
    Viscosity (cPs) 475
    Color Transparent green, Transparent green
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Stress Relief Stress relief
    Light Refractive Index (RI) High
  • Technical Data for Dow Dowsil 3-4150 Dielectric Gel

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
    • Material Form
      • Gel
    • Industry
      • E-Mobility Solutions
      • Electronics - Circuits, Optoelectronics, Interconnections
      • Smart Meters
      • Smart Home Devices
      • Industrial - Delicate components
    • Application Method
      • Dispenser - Dispensed manually, Meter mix equipment, Automated dispensing equipment
    • Cure Method
      • Room Temperature / Air Dry - Room temperature cure
      • 2-Part Cure
    • Color
      • Clear / Transparent - Transparent green
      • Green - Transparent green
    • Brand
      • Dowsil
    Specifications
    Cure Specs
    Cure Temperature (°C) 20 to 25 RT, 25 Test Method
    Cure Time (min) Fast, 90 Test Method
    Viscosity (cPs) 475 Test Method
    Mix Ratio 1:1 (by volume)
    Material Resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Moisture/Humidity Resistance Moisture resistance
    Conductivity
    Dissipation Factor 0.00200, 0.00010 Test Method
    Dielectric Strength (V/mil) Excellent, 375, Electrical insulation Test Method
    Dielectric Constant 2.85, 2.85 Test Method
    Volume Resistivity (O) 7.0 E+15 (ohm*cm) Test Method
    Hardness
    Stress Relief Stress relief
    Flexibility Flexibility, Resilient
    Other Properties
    Light Refractive Index (RI) High
    Specific Gravity 0.970 Test Method
    Coefficient of Thermal Expansion (CTE) 400 (Linear (micron/m °C or ppm ))
    Business Information
    Shelf Life Details Storage conditions and shelf life (“Use By” date) are indicated on the product label.
    Shelf Life Temperature (°F) 77
    Shelf Life Type from date of manufacture
    Shelf Life (mon) 12
    Not Good For
    Don't Use For Sulfur, Polysulfones, Unsaturated hydrocarbon plasitcizers, Chemicals, Organotin, Silicone rubber containing organotin catalyst, Polysulfides, Other sulfur containing materials, Some solder flux residues, Curing agents, Organometallic compounds
    Don't Use With Certain materials, Plasticizers
  • Best Practices for Dow Dowsil 3-4150 Dielectric Gel

    *See Terms of Use Below

    1. Application

      Some gels are supplied in bladder packs that avoid direct air contact with the liquid gel components, allowing use of air pressure over the pack in a pressure pot for dispensing. Do not apply air pressure directly to the liquid gel surface (without the bladder pack) as the gel can become supersaturated with air and bubbling can occur when the material is dispensed and cured. Use of bladder packs prevents bubbling, maintains cleanliness and avoids gel contamination. Gels can be dispensed manually or by using one of the available types of meter mix equipment.

    2. Mixing

      Typically, the two components are of matched viscosities and are readily mixed with static or dynamic mixers, with automated meter-mix normally used for high volume processes. For low volume applications, manual weighing and simple hand mixing may be appropriate. Inaccurate proportioning or inadequate mixing may cause localized or widespread problems affecting the gel properties or cure characteristics.

    3. Deairing/Degassing

      If possible, the potential for entrapment and incorporation of gas (typically air) should be considered during design of the part and selection of a process to mix and dispense the gel. This is especially important with higher viscosity and faster-curing gels. Degassing at > 28 inches (10–20 mm) Hg vacuum may be necessary to ensure a void-free, protective layer.

    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 gel indicates incompatibility and inhibition of cure.

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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
25°C These values are not intended for use in preparing specifications.
Cure Time Test Methods
Cure Time Test Method
Fast
90 min These values are not intended for use in preparing specifications.
Set Time Test Methods
Set Time Set Temperature Test Method
Viscosity Test Methods
Viscosity Test Method
475 cPs Mixed, These values are not intended for use in preparing specifications.
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.85 At 100 Hz, These values are not intended for use in preparing specifications.
2.85 At 100 kHz, These values are not intended for use in preparing specifications.
Dielectric Strength Test Methods
Dielectric Strength Test Method
Excellent
375 V/mil These values are not intended for use in preparing specifications.
Electrical insulation
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00200 At 100 hz, These values are not intended for use in preparing specifications.
0.00010 At 100 kHz, These values are not intended for use in preparing specifications.
Volume Resistivity Test Methods
Volume Resistivity Test Method
7.0 E+15 (ohm*cm) These values are not intended for use in preparing specifications.
Specific Gravity Test Methods
Specific Gravity Test Method
0.970 Cured, These values are not intended for use in preparing specifications.