Dow 1-2577 RTV Coating Datasheet Dow 1-2577 RTV Coating

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  • Description for Dow 1-2577 RTV Coating

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

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    Chemical Resistance Good
    Application Type Conformal Coat
    1 Part or 2 Part 1-Part
    Material Form Liquid
    Industry Electronic Printed Wiring Board (PWB), E-Mobility Solutions, Smart Meters, Smart Home Devices, Headlamp assemblies, Flexible circuit boards, Rigid circuit boards
    Manufacturer Dow
    Chemistry Silicone resin
    Application Method Flow: Flow coating
    Cure Method Moisture, RTV
    Cure Temperature (°C) 25, 20 to 25
    Cure Time (min) 4,320, 10
    Viscosity (cPs) Medium, 950
    Color Transparent, Clear
    Ozone Resistance Ozone resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45
    Volume Resistivity (O) 5E+13 (ohms/cm)
    Key Specifications IPC (Association Connecting Electronics Industries): IPC-CC-830A, Amendment 1, UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: UL V-0 flammability rating, UL746E, Mil-Spec (United States Military Standard): I-46058-C: MIL-I-46058C, Amend. 7

  • Technical Data for Dow 1-2577 RTV Coating

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    Overview
    • Chemical Resistance
      • Chemical Resistance - Good
    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Liquid
    • Industry
      • Smart Meters
      • Smart Home Devices
      • E-Mobility Solutions
      • Headlamp - Headlamp assemblies
      • Electronics - Electronic Printed Wiring Board (PWB), Flexible circuit boards, Rigid circuit boards
      • Power Supplies - Elastoplastic toughened coating
    • Chemistry
    • Application Method
      • Dispenser - Robotic dispensing, Select coating
      • Brush
      • Spray
      • Flow : Flow Coat - Flow coating
      • Dip
      • Screen Print - Automated pattern
    • Cure Method
      • Moisture / Condensation Cure - Moisture
      • RTV (Room Temperature Vulcanization) - RTV
    • Color
      • Clear / Transparent - Transparent, Clear
    • Key Specifications
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) - UL746E
      • IPC (Association Connecting Electronics Industries) : CC-830 - IPC-CC-830A, Amendment 1
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) : UL 94 : V0 - UL V-0 flammability rating
      • Mil-Spec (United States Military Standard) : I-46058-C : Amd. 7 - MIL-I-46058C, Amend. 7
    Specifications
    Cure Specs
    Cure Temperature (°C) 25, 20 to 25 Test Method
    Cure Time (min) 4,320, 10 Test Method
    Viscosity (cPs) Medium, 950
    Tack Free Time (min) 7, 1.30 Test Method
    Work / Pot Time (min) >86,400 Test Method
    Material Resistance
    Ozone Resistance Ozone resistance
    Abrasion Resistance Abrasion
    UV Resistance UV resistance
    Environmental Resistance Environmental resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45
    Moisture/Humidity Resistance Moisture/humidity resistance
    Conductivity
    Dissipation Factor 0.00420, <0.00020 Test Method
    Dielectric Strength (V/mil) Durable, 400
    Dielectric Constant 2.74, 2.74 Test Method
    Volume Resistivity (O) 5E+13 (ohms/cm)
    Hardness
    Shore A Hardness 80
    Flexibility Flexible
    Other Properties
    Specific Gravity 1.040, 1.110
    Flash Point (°F) 41.0
    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 Type From date of manufacture
    Shelf Life (mon) 36

  • Best Practices for Dow 1-2577 RTV 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 coatings is 10 minutes at room temperature, followed by 10 minutes at 80°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.

  • Comparable Materials for Dow 1-2577 RTV Coating

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    Spec Engine® Results

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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.
20 to 25°C Followed by 10@ 80°C, Time to cohesive failure on a 180° peel strip. Coating strength may continue to improve with time.
Cure Time Test Methods
Cure Time Test Method
4,320 min Typical for a 5-mil thickness sample in 180° peel.
10 min Followed by 10@ 80°C, Time to cohesive failure on a 180° peel strip. Coating strength may continue to improve with time.
Tack Free Time Test Methods
Tack Free Time Tack Free Temperature Test Method
7 min 25°C
1.30 min 60°C Tack-Free Time at 60ºC/15% RH
Work / Pot Time Test Methods
Work / Pot Time Temperature
>86,400 min <29°C
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.74 Dielectric Constant, 100 Hz
2.74 Dielectric Constant, 100 kHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00420 Dissipation Factor, 100 Hz
<0.00020 Dissipation Factor, 100 KHz