Dow Dowsil 92-009 Dispersion Coating

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Description for Dow Dowsil 92-009 Dispersion Coating

A one-part, room temperature curing silicone rubber material.

Brand	Dowsil
Application Type	Dispersion Coating, Seal, Excellent release properties
1 Part or 2 Part	1 Part
Material Form	Liquid
Substrate	2024 Aluminum (primed)
Industry	Electrical, Radar antennae, Rockets, Undersides of aircraft, Vehicles orbiting in space, Engine cases, Steel cables, Fuel transfer lines, Aircraft, Vehicles orbiting in space, Structural members and undersides of aircraft
Manufacturer	Dow
Chemistry	Silicone
Cure Method	Air-drying, Room temperature curing
Cure Temperature (°C)	25
Cure Time (min)	4,320
Viscosity (cPs)	8,200
Color	Translucent
Ozone Resistance	Resists ozone
Chemical Resistance	Resists chemicals
High Temperature Resistance (°C)	<260
Other Resistance	Resists ice
Durability	Tough

Best Practices for Dow Dowsil 92-009 Dispersion Coating

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Technical Data for Dow Dowsil 92-009 Dispersion Coating

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Overview

Application Type
- Casting / Moldmaking - Excellent release properties
- Coating - Dispersion Coating
- Sealant - Seal
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
Material Form
- Liquid
Substrate
- Aluminum - 2024 Aluminum (primed)
Industry
- Aerospace - Rockets, Fuel transfer lines
- Radar - Radar antennae
- Aircraft - Undersides of aircraft, Structural members and undersides of aircraft
- Space Applications - Vehicles orbiting in space, Vehicles orbiting in space
- Electronics - Electrical
- Industrial - Fan blades used in wind tunnels, Launch equipment from corroding and eroding, Struts
- Engine - Engine cases
- Cable - Steel cables
- Other - Environmental sealing
Chemistry
- Silicone
Application Method
- Brush
- Spray
- Flow - Pour
- Dip
Cure Method
- Room Temperature / Air Dry - Air-drying, Room temperature curing
Color
- Translucent
Brand
- Dowsil

Specifications

Cure Specs

Cure Temperature (°C)	25	Test Method
Cure Time (min)	4,320	Test Method
Viscosity (cPs)	8,200	Test Method
Tack Free Time (min)	40	Test Method

Bond Strength

General Bond Strength (psi)	Excellent
Tear Strength (piw)	High, 180 (ppi)	Test Method
Tensile Strength (psi)	1,300	Test Method

Material Resistance

Ozone Resistance	Resists ozone
Chemical Resistance	Resists chemicals
UV Resistance	Resists ultraviolet radiation
Environmental Resistance	Resists weathering
High Temperature Resistance (°C)	<260
Moisture/Humidity Resistance	Resists moisture
Other Resistance	Resists ice

Conductivity

Thermal Conductivity (W/m°K)	2.18, 1.26 (Btu-in/ft2 hour)	Test Method
Volume Resistivity (O)	5.4e14 (ohm/cm)	Test Method

Hardness

Durability	Tough
Shore A Hardness	46	Test Method
Elongation (%)	7	Test Method

Other Properties

Specific Gravity	1.110	Test Method
Flash Point (°F)	64.4	Test Method

Business Information

Shelf Life Details	When stored below 32°C (90°F) in closed containers, Dow Corning 92-009 Dispersion Coating has a shelf life of 9 months from date of manufacture.
Shelf Life Type	From date of manufacture
Shelf Life (mon)	9

Best Practices for Dow Dowsil 92-009 Dispersion Coating

*See Terms of Use Below
1. Surface Preparation
  
  In most cases, substantially stronger and more uniform adhesion is obtained by preparing the surface to be treated with DOWSIL™ 1200 OS Primer. The following steps are recommended for all surfaces except silicone rubber. (Silicone rubber surfaces should be roughened with sandpaper and then cleaned with acetone before applying the coating.)
  
  Thoroughly clean and degrease the surface.
  
  Rinse all cleaning agents off surface with acetone or methyl ethyl ketone.
  
  After rinse agent has dried, apply a coat of DOWSIL™ 1200 OS Primer by dipping, brushing, or spraying. Typically, a very thin coating of primer will provide the best adhesion. If cracks appear in the chalked film, too much primer was applied.
  
  Under typical room temperature and humidity conditions, the primer should be allowed to air-dry for 60 to 90 minutes. Because the prime coat is moisture sensitive, low humidity will necessitate a longer drying time.
  
  Apply DOWSIL™ 92-009 Dispersion Coating.
2. Application
  
  DOWSIL™ 92-009 Dispersion Coating can be applied by brushing, dipping, or pouring as supplied. If spraying is the preferred application method, the coating can be thinned with naphtha to any viscosity necessary for use with the intended spray equipment (see Mixing Recommendations). As supplied, the average build per coat is 5 to 6 mils.
  
  For the smoothest coat, the following procedure is recommended: 1. Dilute the coating using a 1.3 to 1 ratio of naphtha to coating by volume (1 to 1 by weight).
  
  2. Apply four passes in rapid succession per coat.
  
  3. If extra buildup is desired, apply successive coats within 30 minutes after the preceding coat was applied. If this is not possible, allow the coated surface to air-dry four hours before applying the next coat.
  
  Thicker coatings may also be achieved by using less naphtha
  
  however, a rougher surface may result.
  
  Pigmentation: DOWSIL™ 92-009 Dispersion Coating is easily pigmented for applications requiring color. To obtain good coverage, the pigment should comprise at least 3 percent of the total formulation by weight. When pigmenting the coating white, zinc oxide or titanium dioxide is recommended. Using the smallest available particle size will minimize settling problems. For other colors, silicone color concentrates–pigment dispersed in a silicone oil to form a paste material–provide the easiest application with the best results. Only two parts per 100 are required (see Mixing Recommendations).
3. Mixing
  
  Any solvent or pigment added to DOWSIL™ 92-009 Dispersion Coating must be free of moisture to prevent premature gellation. This can be accomplished by adding the solvent or filler to the coating and rolling the combination in a closed container until thoroughly mixed, or by mixing in a commercial paint shaker. Zinc oxide or titanium dioxide should be dried 24 hours at 200°C (392°F) in trays before adding it to the coating.
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