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Description for Dow Dowsil 236 Dispersion Coating
A release coating for protecting surfaces from weathering, corrosion and dirt, supplied as low viscosity, oxime cure.Brand Dowsil Application Type Repair, Coating: Release coating, Coating: Dispersion coating 1 Part or 2 Part 1-Part Material Form Liquid Substrate Coated fabrics, Coated paper, Plastic Industry Smart Home Devices, Power Tools Manufacturer Dow Chemistry Silicone, Solvent dispersion, Silicone rubber Cure Method Oxime cure, Moisture cure, Air dry Cure Temperature (°C) 22, 20 to 25 Room temperature Cure Time (min) 1,440, 1,440 Viscosity (cPs) Low, 675 Color White High Temperature Resistance (°C) 149 Low Temperature Resistance (°C) -40 Other Resistance Protecting surfaces from dirt Durability Tough, Durable Can Be Used In Conjunction With These Materials Easy removal of flash urethane molding, Easy removal of flash polyester molding -
Technical Data for Dow Dowsil 236 Dispersion Coating
Overview
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Application Type
- Coating : Protective Coatings - Release coating, Dispersion coating
- Repair & Maintenance - Repair
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1 Part or 2 Part
- 1-Part
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Material Form
- Liquid
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Industry
- Smart Home Devices
- Industrial - Conveyor belts, Dryer flights, Latex manufacturing equipment, Paint spraying operations, Plastic containers, Rolls, Urethane and polyester molding, Vessels, Waste handling equipment
- Power Tools
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Chemistry
- Solvent-Based - Solvent dispersion
- Silicone - Silicone rubber
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Application Method
- Roll - Roller coating
- Brush - Brushing
- Spray - Spraying
- Dip - Dipping
- Other - Stamp coating
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Cure Method
- Room Temperature / Air Dry - Air dry
- Moisture / Condensation Cure - Moisture cure
- Other - Oxime cure
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Color
- White
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Can Be Used In Conjunction With These Materials
- Urethanes - Easy removal of flash urethane molding
- Other - Easy removal of flash polyester molding
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Brand
- Dowsil
Specifications
Cure Specs
Cure Temperature (°C) 22, 20 to 25 Room temperature Test Method Cure Time (min) 1,440, 1,440 Test Method Viscosity (cPs) Low, 675 Test Method Tack Free Time (min) 120, 85 Test Method Dry Time (min) 120 to 240 Bond Strength
Tensile Strength (psi) 325 Test Method Material Resistance
Non-Corrosive Protecting surfaces from corrosion Environmental Resistance Protecting surfaces from weathering High Temperature Resistance (°C) 149 Test Method Low Temperature Resistance (°C) -40 Test Method Other Resistance Protecting surfaces from dirt Hardness
Durability Tough, Durable Shore A Hardness 20 Test Method Elongation (%) 500 Test Method Other Properties
Specific Gravity 1.640 Test Method Flash Point (°F) 50.0 to 53.0 Test Method % Solids (%) 70 Test Method Business Information
Shelf Life Details Store below 90°F (32°C). DOWSIL™ 236 Dispersion Coating has a shelf life of 12 months from date of manufacture. Refer to product packaging for “Use By” date. Shelf Life Temperature (°F) <90 Shelf Life Type From date of manufacture Shelf Life (mon) 12 Not Good For
Don't Use With Brass, Copper, Other sensitive metals, Polycarbonate -
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Best Practices for Dow Dowsil 236 Dispersion Coating
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Surface Preparation
Surfaces must be clean and dry before curing. Moisture, grease, oil, dirt and cleaning agents can interfere with adhesion of the coating. Clean the surface with a solvent to remove foreign material. Then wash with Dow OS fluid or acetone to remove moisture and any residue from the first cleaning operation. In general, solvent cleaning of wood surfaces is not necessary.
For best adhesion, apply a light, uniform coating of DOWSIL™ 1200 OS Primer by brushing or spraying. Allow the prime coat to dry for 45 minutes at normal temperature and humidity conditions. Avoid excess prime coat. Light, uniform application is best. A low-VOC primer version is available as DOWSIL™ P5200 Adhesion Promoter.
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Application
For precise control of coating thickness, spraying is the best method of application. However, brushing, dipping, roller coating or stamp coating may be used. To obtain the viscosity most suited to a particular spraying system, the dispersion may be thinned with a solvent such as VM&P naphtha or Dow OS fluid.
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Curing
Cures by Air-drying: Apply DOWSIL™ 236 Dispersion Coating and allow to air-dry 24 hours at room temperature in a humid atmosphere, such as = 50 percent relative humidity.
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Clean-Up
To keep the dispersion from setting up and curing in spray guns, brushes, lines or rollers, thoroughly clean the application equipment immediately after use with a solvent such as Dow OS fluid.
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Cure Temperature Test Methods
Cure Temperature | Cure Time Test Method |
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22°C | 50 Percent Relative Humidity, Specification Writers: These values are not intended for use in preparing specifications. |
20 to 25°C Room temperature | Air-dry, >= 50 percent relative humidity |
Cure Time Test Methods
Cure Time | Test Method |
---|---|
1,440 min | 50 Percent Relative Humidity, Specification Writers: These values are not intended for use in preparing specifications. |
1,440 min | Air-dry, >= 50 percent relative humidity |
Tack Free Time Test Methods
Tack Free Time | Tack Free Temperature | Test Method |
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120 min | 22°C | Tack-free Drying Time, CTM 0095, 50 Percent Relative Humidity, Specification Writers: These values are not intended for use in preparing specifications. |
85 min | 72°C | Skin-over Time, CTM 0095, 50 Percent Relative Humidity, Specification Writers: These values are not intended for use in preparing specifications. |
Viscosity Test Methods
Viscosity | Test Method | Temperature |
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Low | ||
675 cPs | CTM 0050, As Supplied, Specification Writers: These values are not intended for use in preparing specifications. | 25°C |
Tensile Strength Test Methods
Tensile Strength | Test Method |
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325 psi | CTM 0137A, Specification Writers: These values are not intended for use in preparing specifications. |
High Temperature Resistance Test Methods
High Temperature Resistance | Test Method |
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149°C | Approximate Service Temperature, As Supplied, Specification Writers: These values are not intended for use in preparing specifications. |
Low Temperature Resistance Test Methods
Low Temperature Resistance | Test Method |
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-40°C | Approximate Service Temperature, As Supplied, Specification Writers: These values are not intended for use in preparing specifications. |
Elongation Test Methods
Elongation | Test Method |
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500 % | CTM 0137A, As Cured, Specification Writers: These values are not intended for use in preparing specifications. |
Shore A Hardness Test Methods
Shore A Hardness | Shore Hardness Test Method |
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20 | CTM 0099, As Cured, Specification Writers: These values are not intended for use in preparing specifications. |
Flash Point Test Methods
Flash Point | Test Method |
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10.0 to 11.7°C | CTM 0021A, As Supplied, Specification Writers: These values are not intended for use in preparing specifications. |
% Solids Test Methods
% Solids | Test Method |
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70 % | CTM 0010, As Supplied, Specification Writers: These values are not intended for use in preparing specifications. |
Specific Gravity Test Methods
Specific Gravity | Temperature | Test Method |
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1.640 | 25°C | CTM 0022, As Cured, Specification Writers: These values are not intended for use in preparing specifications. |