Dow Dowsil 1-2577 Low VOC Conformal Coating Datasheet Dow Dowsil 1-2577 Low VOC Conformal Coating

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  • Description for Dow Dowsil 1-2577 Low VOC Conformal Coating

    One-part, medium viscosity; ozone-safe, solvent-borne, elastoplastic silicone resin; excellent abrasion resistance; RTV or heat accelerable cure.

    *See Terms of Use Below

    Brand Dowsil
    Chemical Resistance Good
    Application Type Conformal Coating
    1 Part or 2 Part 1-Part
    Material Form Liquid
    Industry Electronic Printed Wiring Board (PWB) applications, Smart Meters, E-Mobility Solutions, Smart Home Devices, Insulation, Headlamp assemblies, Flexible circuit boards, Rigid circuit boards, Electronic devices
    Manufacturer Dow
    Chemistry Silicone resin
    Cure Method RTV, Moisture, Heat
    Cure Temperature (°C) 25, 25, 25, 80, 60
    Odor Details Much Lower
    Cure Time (min) 4,320, 10, 10, 10
    Viscosity (cPs) Medium, 1,050
    Color Transparent
    Ozone Resistance Ozone resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45
    Volume Resistivity (O) 1.9e14 (ohms/cm)
    Key Specifications Mil-Spec (United States Military Standard): I-46058-C: Mil-I-46058C, Amendment 7 Approved, UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: UL94 V-0, IPC (Association Connecting Electronics Industries): IPC-CC-830 Amendment 1 Approved, UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 746E
  • Technical Data for Dow Dowsil 1-2577 Low VOC Conformal Coating

    Overview
    • Chemical Resistance
      • Chemical Resistance - Good
    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Liquid
    • Industry
      • Master Control Module
      • Smart Meters
      • Smart Home Devices
      • E-Mobility Solutions
      • Headlamp - Headlamp assemblies
      • Electronics - Electronic Printed Wiring Board (PWB) applications, Flexible circuit boards, Rigid circuit boards, Electronic devices
      • Insulation
    • Chemistry
    • Application Method
      • Dispenser - Robotic dispensing, Select coating
      • Brush
      • Spray
      • Flow
      • Dip
      • Screen Print - Automated pattern coating
    • Cure Method
      • Moisture / Condensation Cure - Moisture
      • Heat
      • RTV (Room Temperature Vulcanization) - RTV
    • Color
      • Clear / Transparent - Transparent
    • Key Specifications
      • Mil-Spec (United States Military Standard) : I-46058-C : Amd. 7 - Mil-I-46058C, Amendment 7 Approved
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) : UL 94 : V0 - UL94 V-0
      • IPC (Association Connecting Electronics Industries) : CC-830 - IPC-CC-830 Amendment 1 Approved
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) : 746E - UL 746E
    • Brand
      • Dowsil
    Specifications
    Cure Specs
    Cure Temperature (°C) 25, 25, 25, 80, 60 Test Method
    Odor Details Much Lower
    Cure Time (min) 4,320, 10, 10, 10 Test Method
    Viscosity (cPs) Medium, 1,050
    Work / Pot Time (min) >86,400 Test Method
    Bond Strength
    General Bond Strength (psi) Good
    Material Resistance
    Ozone Resistance Ozone resistance
    Abrasion Resistance Abrasion resistant
    UV Resistance UV resistance
    Environmental Resistance Environmental resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45
    Conductivity
    Dissipation Factor 0.00110, <0.00030 Test Method
    Dielectric Strength (V/mil) Durable
    Dielectric Constant 2.34, 2.33 Test Method
    Volume Resistivity (O) 1.9e14 (ohms/cm)
    Hardness
    Shore A Hardness 85
    Shore D Hardness 25
    Flexibility Flexible
    Other Properties
    Specific Gravity 0.880, 1.120 Test Method
    Flash Point (°F) 69.8
    Business Information
    Shelf Life Details The product should be used by its Use Before date as indicated on the product label.
    Shelf Life Temperature (°F) 77
    Shelf Life Type From date of manufacture
    Shelf Life (mon) 36
  • Best Practices for Dow Dowsil 1-2577 Low VOC Conformal Coating

    *See Terms of Use Below

    1. Curing

      The time required to reach a tack-free state can be reduced with heat. When using heat for this purpose, allow adequate time for the solvent to evaporate prior to exposing to elevated temperatures in an air circulating oven. A typical cure schedule for 3 mil (75 micron) coatings is 10 minutes at room temperature, followed by 10 minutes at 60°C. If the coating blisters or contains bubbles, allow additional time at room temperature for the solvent to flash off prior to oven cure.

    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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    *See Terms of Use Below

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
25°C Typical for a 5-mil thickness sample in 180° peel.
25°C
25°C A typical cure schedule for 3 mil (75 micron)
80°C A typical cure schedule for 3 mil (75 micron)
60°C
Cure Time Test Methods
Cure Time Test Method
4,320 min Typical for a 5-mil thickness sample in 180° peel.
10 min A typical cure schedule for 3 mil (75 micron)
10 min A typical cure schedule for 3 mil (75 micron)
10 min
Tack Free Time Test Methods
Tack Free Time Tack Free Temperature Test Method
Work / Pot Time Test Methods
Work / Pot Time Temperature
>86,400 min <29°C
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.34 100 Hz
2.33 100 kHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00110 100 Hz
<0.00030 100 kHz
Specific Gravity Test Methods
Specific Gravity Test Method
0.880 Uncured
1.120 Cured