DOWSIL 236
Harmonization Code : 3404.90.00.00 | Artificial waxes and prepared waxes : Other
Main features
- Durable, Dry-Surfaced Silicone Rubber Coating
- Sticky-Material Adhesion Prevention
- Multiple Application Methods
Product Description
DOWSIL™ 236 Dispersion Coating is a one-part silicone rubber dispersion designed to form a dry-surfaced, durable release and protective coating. Supplied as a low-viscosity white liquid, it cures at room temperature through reaction with atmospheric moisture to produce a tough, rubbery electrical-insulating layer. The coating can help prevent sticky materials from adhering to processing equipment, reduce buildup and cleanup, and protect surfaces from weathering and corrosion. It may be applied by spraying, brushing, dipping, roller coating, or stamp coating.
Key features
- Durable silicone rubber coating: Cures from a low-viscosity liquid to a smooth, white, dry-surfaced rubber layer.
- Release and surface protection: Helps release sticky materials, reduce process buildup, and protect surfaces from weathering and corrosion.
- Room-temperature moisture cure: Oxime-cure formulation reacts with moisture vapor in the air without requiring high-temperature processing.
- Flexible application options: Can be applied by spraying, brushing, dipping, roller coating, or stamp coating.
- On-site application and repair: Can be applied or repaired without disassembling supported equipment.
Applications / Suitable for
- Release coatings for rolls, conveyors, dryer flights, and molding operations
- Protection of surfaces from weathering, corrosion, dirt, and sticky materials
- Linings for plastic containers or vessels
- Latex manufacturing, paint-spraying, and waste-handling equipment
- Urethane and polyester molding operations
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Physical Properties
Mechanical Properties
Additional Information
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 |
|---|---|---|---|
| Composition | Solvent dispersion of one-part silicone rubber | — | As supplied |
| Color | White | — | CTM 0176 |
| Flash point | 50–53 (10–12) | °F (°C) | CTM 0021A |
| Solids | 70 | % | CTM 0010 |
| Viscosity | 675 | centipoise | CTM 0050; at 77°F (25°C) |
| Vehicle | VM&P naphtha | — | As supplied |
| Tack-free drying time | 2 | hours | CTM 0095; cured at 72°F (22°C) and 50% relative humidity |
| Skin-over time | 85 | minutes | At 72°F (22°C) and 50% relative humidity |
| Cure time | 24 | hours | 0.100-inch section at 72°F (22°C) and 50% relative humidity |
| Recommended dry-film thickness per application | 4–18 | mils | Additional coats may be used; allow 2–4 hours of drying between layers at room temperature in a humid atmosphere |
| Shelf life | 12 | months | From date of manufacture; store below 90°F (32°C) in a closed container |
After-processing / final-state properties
Typical cured-material properties. Values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tensile strength | 325 | psi | CTM 0137A; cured material |
| Elongation | 500 | % | CTM 0137A; cured material |
| Durometer | 20 | Shore A points | CTM 0099; cured material |
| Specific gravity | 1.64 | — | CTM 0022; at 77°F (25°C) |
| Approximate service temperature | −40 to 300 (−40 to 150) | °F (°C) | Approximate service-temperature range |
