3M SB20 Rite-Lok Cyanoacrylate

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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

Best Practices for 3M SB20 Rite-Lok Cyanoacrylate

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Technical Data for 3M SB20 Rite-Lok Cyanoacrylate

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Overview

Chemical Resistance
- Chemical Resistance - Excellent, Most oils
- Chemical Resistance : Relative Solvent Resistance - Excelent Solvent resistance
Application Type
- Adhesive - Bond
- Adhesive : Instant Adhesives
1 Part or 2 Part
- 1-Part
Material Form
- Liquid
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
Chemistry
- Cyanoacrylate (CA) - Cyanoacrylate
- Other - Ethyl
Application Method
- Other - Hand applied
Cure Method
- Moisture / Condensation Cure - Moisture
Color
- Clear / Transparent - Clear
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

Best Practices for 3M SB20 Rite-Lok Cyanoacrylate

*See Terms of Use Below
1. 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 ).
2. 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.
3. 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.
Comparable Materials for 3M SB20 Rite-Lok Cyanoacrylate

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Spec Engine^® Results
- 791(PermaBond)
  It is is a low viscosity, surface insensitive adhesive that will rapidly bond substrates with acidic surfaces such as wood and plated surfaces.
- 101(PermaBond)
  A low viscosity product useful in wicking or penetrating applications or bonding closely fitting parts.
- Instantbond 119(Hernon)
  A state-of-the-art, single component, solventless, room temperature curing cyanoacrylate adhesive that polymerizes rapidly when pressed into a thin film between parts.
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- SF20 Rite-Lok Super Fast Instant Adhesive(3M)
  Rely less on surface moisture for cure speed than standard cyanoacrylates. It is designed to join together difficult-to- bond plastics and rubbers, acidic and/or contaminated surfaces such as woods, leathers, cardboard, and oily surfaces.
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