Dow 92-023 Primer

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Description for Dow 92-023 Primer

Specially formulated for use with addition-cure silicones to mitigate surface cure poisoning. This clear primer is diluted in heptane solvent and enhances the adhesion of many addition-cure silicones to a wide variety of surfaces.

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Application Type	Prime
1 Part or 2 Part	2-Part
Material Form	Liquid
Substrate	Ceramics, Composites, Glass, Metals, Silicone
Industry	Powertrain, Smart Meters, Displays, E-Mobility Solutions, Smart Home Devices
Manufacturer	Dow
Chemistry	Heptane Solvent
Cure Method	Solvent, Moisture
Cure Temperature (°C)	20 to 25
Cure Time (min)	60 to 120
Viscosity (cPs)	0.70
Color	Clear
Other Resistance	Inhibition
Can Be Used In Conjunction With These Materials	Addition-cure silicones

Best Practices for Dow 92-023 Primer

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Technical Data for Dow 92-023 Primer

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Overview

Application Type
- Primer - Prime
1 Part or 2 Part
- 2-Part
Material Form
- Liquid
Substrate
- Ceramic - Ceramics
- Glass
- Metal - Metals
- Plastic - Silicone
- Composites
Industry
- Displays
- Smart Meters
- Smart Home Devices
- Powertrain
- E-Mobility Solutions
Chemistry
- Solvent-Based - Heptane Solvent
Application Method
- Brush - Wiping
- Spray
- Dip
Cure Method
- Solvent
- Moisture / Condensation Cure - Moisture
Color
- Clear / Transparent - Clear
Can Be Used In Conjunction With These Materials
- Silicones - Addition-cure silicones

Specifications

Cure Specs

Cure Temperature (°C)	20 to 25
Cure Time (min)	60 to 120
Viscosity (cPs)	0.70	Test Method

Material Resistance

Other Resistance	Inhibition

Other Properties

Flash Point (°F)	8.6	Test Method

Business Information

Shelf Life Details	Shelf life is indicated by the “Use By” date found on the product label. For best results, Dow Corning primers, prime coats, and adhesion promoters should be stored below 32°C (90°F).
Shelf Life Type	from date of manufacture
Shelf Life (mon)	18

Best Practices for Dow 92-023 Primer

*See Terms of Use Below
1. Surface Preparation
  
  The active ingredients must thoroughly wet-out and coat the bonding surfaces. Mild abrasion, solvent cleaning, plasma, corona discharge, and other pre-treatments have been used to clean and enhance surface reactivity to bonding. In general, light surface abrasion is recommended whenever possible, because it promotes good cleaning and increases the surface area for bonding. Surfaces should be cleaned and/or degreased with Dow Corning ® brand OS Fluids, naphtha, mineral spirits, methyl ethyl ketone (MEK), or other suitable solvents that will remove oils and other contaminants that may be present.
  
  A final surface wipe with acetone or IPA may also be helpful. Different cleaning techniques may give better results than others. Users should determine the best technique for their applications. For especially difficult-to-bond-to surfaces, it may be necessary to increase the surface reactivity by chemical etchants or oxidizers, or by exposing the surface to UV, corona, plasma, or flame sources. Allow solvents to completely evaporate before applying the primer.
2. Application
  
  These products should be applied in a very light, even coat by wiping, dipping, or spraying. Excess material should be wiped off to avoid over-application, which generally appears as a white, chalky surface. When dip or spray coating, diluting by a factor of 2 to 4 with additional solvent may avoid excessive build-up.
3. Curing
  
  These products require moisture in the air to cure, and are generally cured at room temperature and in a range of 20 to 90 percent relative humidity for 1 to 2 hours. Low humidity and/or low temperature conditions require longer cure times. Mild heat acceleration of the cure rate may be possible but temperatures above 60°C (140°F) are not recommended. During application, the carrier solvent typically evaporates quickly, allowing the active ingredients to begin to react with atmospheric moisture and bonding surfaces. For optimal bonding, different cure times may be required for different temperature and humidity conditions. Users should determine the best cure schedule and conditions for their applications.
  
  The desired silicone elastomer should be applied after the primer, prime coat, or adhesion promoter has fully cured.
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