Dow Dowsil 3-1944 RTV Coating

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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
1 Part or 2 Part	1 Part
Material Form	Liquid, Silicone elastomer
Substrate	Ceramics, Glass, Reactive metals, Plastics, Resins
Industry	Circuit board, Lighting: Light Emitting Diodes (LEDs), Electronics: PCB system 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

Best Practices for Dow Dowsil 3-1944 RTV Coating

*See Terms of Use Below

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.
Mixing

No mixing required
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.
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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Technical Data

Overview

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Specifications

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Best Practices

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Comparable Materials

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