Dow Sylgard 535 Thixotropic Dielectric Gel

Dow Sylgard 535 Thixotropic Dielectric Gel Datasheet
  • Description for Dow Sylgard 535 Thixotropic Dielectric Gel

    Extremely soft or firm, thermal/mechanical shock and vibration damping, excellent dielectric properties, flexible cure schedule, reversion resistant, thick section cure, compatible with automated dispensing equipment, and physical and electrical stability over a wide temperature range.

    *See Terms of Use Below

    Brand Sylgard
    Application Type Seal
    1 Part or 2 Part 1 Part
    Material Form Gel
    Industry Circuits, E-Mobility Solutions, Smart Meters, Smart Home Devices, Electronics, Optoelectronics
    Manufacturer Dow
    Chemistry Silicone, Solvent-free
    Cure Method Heat, Addition Cure
    Cure Temperature (°C) 20 to 25, 150
    Cure Time (min) 60
    Viscosity (cPs) Thixotropic, 2,925
    Color Translucent
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Light Refractive Index (RI) High
  • Technical Data for Dow Sylgard 535 Thixotropic Dielectric Gel

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Gel
    • Industry
      • E-Mobility Solutions
      • Electronics - Circuits, Optoelectronics
      • Smart Meters
      • Smart Home Devices
      • Industrial - Delicate components
    • Application Method
      • Dispenser - Automated dispensing equipment
    • Cure Method
      • Heat
      • 2-Part Cure - Addition Cure
    • Color
      • Translucent
    • Brand
      • Sylgard
    Specifications
    Cure Specs
    Cure Temperature (°C) 20 to 25, 150
    Cure Time (min) 60
    Viscosity (cPs) Thixotropic, 2,925
    Material Resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Moisture/Humidity Resistance Moisture/humidity resistance
    Conductivity
    Dielectric Strength (V/mil) Excellent, 279
    Volume Resistivity (O) 6E+14 (ohms/cm)
    Hardness
    Shore A Hardness 85 (grams)
    Flexibility Soft or firm, Flexible, Resilient
    Other Properties
    Light Refractive Index (RI) High
    Specific Gravity 0.970 Test Method
    Business Information
    Shelf Life Details Storage conditions and shelf life (“Use By” date) are indicated on the product label.
    Shelf Life Temperature (°F) 41
    Shelf Life (mon) 9
  • Best Practices for Dow Sylgard 535 Thixotropic Dielectric Gel

    *See Terms of Use Below

    1. Mixing

      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. 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 dispense the gel. This is especially important with higher-viscosity and faster curing gels.

    2. 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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Specific Gravity Test Methods
Specific Gravity Test Method
0.970 Cured or uncured A & B.