DOWSIL 92-009
Harmonization Code : 3404.90.00.00 | Artificial waxes and prepared waxes : Other
Main features
- Room-Temperature Coating Cure
- Brush, Dip, Pour, and Spray Application
- Coating Build of 5 to 6 Mils
Product Description
DOWSIL™ 92-009 Dispersion Coating is a one-part, air-drying silicone coating formulated for environmental sealing and surface protection. Supplied as 35% silicone solids dispersed in a hydrocarbon solvent, it can be applied by brushing, dipping, pouring, or spraying and cures at room temperature to form a tough, transparent silicone rubber film. The cured coating combines high tear strength with adhesion, release, anti-abrasion, electrical-insulation, and environmental-resistance properties.
Key features
- One-part room-temperature cure: Air-dries through exposure to atmospheric moisture and cures within 72 hours at 25°C (77°F) and 50% relative humidity.
- Durable protective film: Cures to a tough, transparent silicone rubber coating with high tear strength and anti-abrasion characteristics.
- Environmental resistance: Resists weathering, ozone, chemicals, moisture, ice, and ultraviolet radiation at temperatures up to 260°C (500°F).
- Flexible application methods: May be applied by brushing, dipping, pouring, or spraying.
Applications / Suitable for
- Environmental sealing and protection of parts and substrates
- Protective coating for electrical and steel cables, structural members, and equipment components
- Corrosion and erosion protection for aircraft, launch equipment, and related aerospace components
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Color
clear
The color
Specific Gravity
1.11
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.
For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
Thermal Properties
Flash Point
18 °C
The flashpoint of a solvent is the lowest possible temperature at which it can vaporize to form an ignitable vapor.
Flashpoint is often confused with “autoignition temperature”, which is the temperature at which a solvent ignites without an ignition source.
Physical Properties
Tack-Free Time
40 minutes
Viscosity
82 mPa.s
Viscosity is a measurement of a fluid’s resistance to flow.
Viscosity is commonly measured in centiPoise (cP). One cP is defined as
the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP.
A product like honey would have a much higher viscosity -around 10,000 cPs-
compared to water. As a result, honey would flow much slower out of a tipped glass than
water would.
The viscosity of a material can be decreased with an increase in temperature in
order to better suit an application
Mechanical Properties
Elongation
680 %
Elongation is the process of lengthening something.
It is a percentage that measures the initial, unstressed, length compared to the length of the material right before it breaks.
It is commonly referred to as Ultimate Elongation or Tensile Elongation at break.
Electrical Properties
Volume Resistivity
5.4 x 10^14 Ohms⋅cm
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
Additional Information
Technical properties
As-supplied / before-processing properties
Typical as-supplied and processing properties. Values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Physical form | 35% silicone solids dispersed in hydrocarbon solvent | — | As supplied |
| Color | Translucent | — | CTM 0176 |
| Flash point | 18 (65) | °C (°F) | CTM 0021A |
| Viscosity | 82 | poise | CTM 0050 |
| Tack-free time | 40 | minutes | CTM 0095 |
| Average build per coat | 5–6 | mils | Applied as supplied |
| Cure time | 72 | hours | At 25°C (77°F) and 50% relative humidity |
| Shelf life | 9 | months | From date of manufacture when stored below 30°C (86°F) in closed containers |
Technical properties
After-processing / final-state properties
Typical cured-material properties. Values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Physical form | Tough, transparent silicone rubber coating | — | After cure |
| Specific gravity | 1.11 | — | CTM 0022 |
| Adhesion to primed 2024 aluminum | Excellent | — | 2024 aluminum; primed |
| Tensile strength | 1,300 | psi | ASTM D 412; cured 72 hours at 25°C (77°F) and 50% relative humidity |
| Elongation | 680 | % | ASTM D 412; cured 72 hours at 25°C (77°F) and 50% relative humidity |
| Tear strength, Die B | 180 | ppi | ASTM D 624; cured 72 hours at 25°C (77°F) and 50% relative humidity |
| Durometer hardness | 46 | Shore A points | ASTM D 676; cured 72 hours at 25°C (77°F) and 50% relative humidity |
| Volume resistivity | 5.4 × 1014 | ohm-cm | CTM 0249; cured 72 hours at 25°C (77°F) and 50% relative humidity |
| Thermal conductivity | 1.26 | Btu-in/ft²·h·°F | CTM 0224; cured 72 hours at 25°C (77°F) and 50% relative humidity |
