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Description for 3M SB20 Rite-Lok Cyanoacrylate
Bond rough, porous, contaminated, and acidic substrates including wood, cardboard, veneer, fabric, cork, and leather.Chemical Resistance Excellent, Chemical Resistance: Excelent Solvent resistance, Most oils Application Type Bond, Adhesive: Instant Adhesives 1 Part or 2 Part 1-Part Material Form Liquid Substrate fabric, Cardboard, Low surface energy plastics, polypropylene, cork, porous substrates, polyethylene, Low surface energy plastics, Paper, wood Manufacturer 3M Chemistry Cyanoacrylate, Ethyl Cure Method Moisture Cure Time (min) 1,440 Viscosity (cPs) very low, 2.00 to 5.00 Color Clear High Temperature Resistance (°C) 82 Low Temperature Resistance (°C) -54 Key Specifications CID (United States Government Commercial Item Description): A-A-3097: Type II, Class 1 -
Technical Data for 3M SB20 Rite-Lok Cyanoacrylate
Overview
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Chemical Resistance
- Chemical Resistance - Excellent, Most oils
- Chemical Resistance : Relative Solvent Resistance - Excelent Solvent resistance
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1 Part or 2 Part
- 1-Part
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Material Form
- Liquid
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Substrate
- Porous Substrates
- Low Surface Energy - Low surface energy plastics
- Plastic - Low surface energy plastics
- Polypropylene
- Polyethylene (LDPE, HDPE) - polyethylene
- Wood - cork
- Fabric
- Paper - Cardboard
- Other - rough substrates, contaminated substrates, acidic substrates, veneer, leather
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Chemistry
- Cyanoacrylate (CA) - Cyanoacrylate
- Other - Ethyl
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Application Method
- Other - Hand applied
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Cure Method
- Moisture / Condensation Cure - Moisture
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Color
- Clear / Transparent - Clear
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Key Specifications
- CID (United States Government Commercial Item Description) : A-A-3097 : Type II, Class 1
Specifications
Cure Specs
Cure Time (min) 1,440 Viscosity (cPs) very low, 2.00 to 5.00 Test Method Fixture or Handling Strength Time (min) 0.25 to 0.58 Bond Strength
Shear Strength (psi) 2,900 Test Method Tensile Strength (psi) 5,100 Test Method Material Resistance
High Temperature Resistance (°C) 82 Low Temperature Resistance (°C) -54 Other Properties
Specific Gravity 1.06 (g/ml) Business Information
Shelf Life Details Storage: For short term storage (<30 days), keep adhesive in a cool (60°F to 80°F [16°C to 27°C]), dry place out of direct sunlight. Keep containers tightly covered and free of moisture. Refrigeration (40°F [4°C]) gives optimum long term storage stability.;3M™ Scotch-Weld™ Surface Insensitive Instant Adhesives can be expected to have a shelf life of one year from the date of shipment from 3M when stored under refrigerated conditions. Shelf Life Temperature (°F) 60 to 80, 40 Shelf Life Type From the date of Shipment Shelf Life (mon) 12 -
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Best Practices for 3M SB20 Rite-Lok Cyanoacrylate
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Surface Preparation
For optimum strength structural bonds, paint, oxide films, oils, dust, mold release agents, and all other surface contaminants must be completely removed. However, the amount of surface preparation depends on the required bond strength and the environmental aging resistance desired by the user. Typical quick surface preparation would include wiping with a clean solvent (such as isopropyl alcohol), abrading the surface with a clean fine abrasive, and then wiping again with a clean solvent to remove loose particles. Note: When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.
Ensure that parts are clean, dry, and free from oil and grease.
Ensure that parts are clean, dry, and free from oil and grease.
A Rite-Lok™ Instant Adhesive Activator may be required if there are bonding gaps or porous substrate surfaces, if substrates are low surface energy plastics (e.g., polyethylene, polypropylene ) or if substrates have acidic surfaces (e.g., paper, leather ).
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Application
Bond speed is typically very fast so ensure that parts are properly aligned before dispensing.
Product is normally hand applied from the bottle. Apply sparingly to one surface and press parts firmly together until handling strength is achieved. As a general rule, as little cyanoacrylate as possible should be used. Over application will result in slower cure speed and lower bond strength.
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Curing
Full bond strength will typically be achieved within a 24 hour cure time.
After curing, Rite-Lok™ Surface Insensitive Instant Adhesive bonds are suitable for use up to about 180°F (82°C). At 180°F (82°C) the bonds will be approximately 70% of the strength at room temperature and at 212°F (100°C) about 50% of full strength.
Cyanoacrylate bond resistance to most oils and solvents is excellent. Long term humidity, moisture, or water immersion may affect the strength of a cured cyanoacrylate bond depending on the substrates and the bond gap. Testing is recommended to evaluate the effect.
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