3M Scotch-Weld Plastic and Rubber Instant Adhesive PR Gel
Brand Scotch-weld Chemical Resistance Excellent, Chemical Resistance: Excellent solvent resistance Application Type Bond, Adhesive: Instant adhesive 1 Part or 2 Part 1-Part Material Form Liquid Substrate Composite substrates, Metal, Nylon, Paper, Difficult-to-bond plastic, Heavily plasticized PVC, Rubber, Porous substrates, Polyethylene, EPDM, ABS, Low surface energy plastics Manufacturer 3M Chemistry Cyanoacrylate, Ethyl hybrid Cure Method Moisture Cure Temperature (°C) 23 Gap Fill (in) 0.020 Cure Time (min) Fast, 1,440 Viscosity (cPs) Very high, 50,000 to 90,000, 7,000 to 20,000, 100,000 to 150,000, Will not drip, Will not slump Color Clear Oil Resistance Most oils High Temperature Resistance (°C) 82 Low Temperature Resistance (°C) -54 Key Specifications Registered to ISO 9001 standards
Technical Data for 3M Scotch-Weld Plastic and Rubber Instant Adhesive PR Gel
- Chemical Resistance - Excellent
- Chemical Resistance : Relative Solvent Resistance - Excellent solvent resistance
1 Part or 2 Part
- Porous Substrates
- Plastic - Difficult-to-bond plastic, Low surface energy plastics
- Polyvinyl chloride (PVC) - Heavily plasticized PVC
- Polyethylene (LDPE, HDPE) - Polyethylene
- EPM/EPDM - EPDM
- Composites - Composite substrates
- Other - Like substrates, Santoprene®, Viton®, Acidic surfaces, Leather, Vertical surfaces
- Other - Superior performance
- Cyanoacrylate (CA) - Cyanoacrylate
- Other - Ethyl hybrid
- Other - Hand applied
- Moisture / Condensation Cure - Moisture
- Clear / Transparent - Clear
- International Organization for Standardization - Registered to ISO 9001 standards
Cure Temperature (°C) 23 Gap Fill (in) 0.020 Cure Time (min) Fast, 1,440 Viscosity (cPs) Very high, 50,000 to 90,000, 7,000 to 20,000, 100,000 to 150,000, Will not drip, Will not slump Test Method Fixture or Handling Strength Time (min) 0.05 to 1.00, <0.42 Test Method
Shear Strength (psi) 2,900, 2,200, 3,100, 2,400, 1,050, 900, 1,750, 950, 1,100, 100 Test Method
Oil Resistance Most oils High Temperature Resistance (°C) 82 Low Temperature Resistance (°C) -54
Specific Gravity 1.10 (g/ml)
Shelf Life Details 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™ Plastic and Rubber Instant Adhesives can be expected to have a shelf life of 15 months from date of manufacture when stored under refrigerated conditions. Shelf Life Temperature (°F) 61 to 81 Shelf Life Type From date of manufacture Shelf Life (mon) 15
Best Practices for 3M Scotch-Weld Plastic and Rubber Instant Adhesive PR Gel
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.
When using solvents, extinguish all ignition sources, including pilot lights, and follow the manufacturer’s precautions and directions for use.
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.
Full bond strength will typically be achieved within a 24 hour cure time.
Low humidity or low temperature conditions will slow down the cure rate
After curing, 3M™ Scotch-Weld™ Plastic and Rubber 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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Fixture or Handling Strength Time Test Methods
|Fixture or Handling Strength Time||Fixture-Handling Strength Test Method|
|0.05 to 1.00 min|
|<0.42 min||Notes: Min time between bond creation and ability to support a 5 psi tensile load. Open and set times determined by RT environment. Higher temps will lengthen open and set times, while lower temperatures will shorten open time and set time.|
Viscosity Test Methods
|50,000 to 90,000 cPs||Brookfield RVT, ‘T-spindle’ C @ 2.5 rpm|
|7,000 to 20,000 cPs||Brookfield RVT, ‘T-spindle’ C @ 20 rpm|
|100,000 to 150,000 cPs||Brookfield viscosity, Spindle TC @ 2.5 rpm|
|Will not drip|
|Will not slump|
Shear Strength Test Methods
|Shear Strength||Type||Substrate||Test Method|
|2,900 psi||Overlap shear strength||ASTM D1002 (grit-blasted steel)|
|2,200 psi||Overlap shear strength||Steel||ASTM D-1002, Grit blasted|
|3,100 psi||Overlap shear strength||Stainless steel grit blasted||ASTM D-1002|
|2,400 psi||Overlap shear strength||Aluminum grit blasted||ASTM D-1002|
|1,050 psi||Overlap shear strength||ABS||Substrate failure|
|900 psi||Overlap shear trength||Polycarbonate||ASTM D-1002, Substrate failure|
|1,750 psi||Overlap shear strength||PVC||ASTM D-1002, Substrate failure|
|950 psi||Overlap shear strength||Nylon||ASTM D-1002|
|1,100 psi||Overlap shear strength||Polypropylene||ASTM D-1002, Substrate failure, Primed with AC77|
|100 psi||Overlap shear strength||Silicone elastomer||ASTM D-1002, Substrate failure, Primed with AC79|
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