Epoxy Adhesive

2216 B/A

Handling/Curing

Information (continued)

3. For maximum bond strength, apply product evenly to both surfaces to be joined.

4. Application to the substrates should be made within 90 minutes. Larger quantities

and/or higher temperatures will reduce this working time.

5. Join the adhesive coated surfaces and allow to cure at 60°F (16°C) or above until

firm. Heat, up to 200°F (93°C), will speed curing.

6. The following times and temperatures will result in a full cure:

7. Keep parts from moving until handling strength is reached. Contact pressure is

necessary. Maximum shear strength is obtained with a 3-5 mil bond line.

Maximum peel strength is obtained with a 17-25 mil bond line.

8. Excess uncured adhesive can be cleaned up with ketone type solvents.*

Adhesive Coverage: A 0.005 in. thick bondline will typically yield a coverage of

320 sq. ft/gallon

Product

3M™ Scotch-Weld™ Epoxy Adhesive

2216 Gray

2216 Tan NS

2216 Translucent

Cure Temperature

Time

Time

Time

75°F (24°C)

7 days

7 days

30 days

150°F (66°C)

120 minutes

120 minutes

240 minutes

200°F (93°C)

30 minutes

30 minutes

60 minutes

Application and

Equipment Suggestions

These products may be applied by spatula, trowel or flow equipment.

Two-part mixing/proportioning/dispensing equipment is available for intermittent or

production line use. These systems are ideal because of their variable shot size and

flow rate characteristics and are adaptable to many applications.

Surface Preparation

For high 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 directly depends on the required bond strength and the

environmental aging resistance desired by user.

The following cleaning methods are suggested for common surfaces.

Steel or Aluminum (Mechanical Abrasion)

1. Wipe free of dust with oil-free solvent such as acetone or alcohol solvents.*

2. Sandblast or abrade using clean fine grit abrasives (180 grit or finer).

3. Wipe again with solvents to remove loose particles.

4. If a primer is used, it should be applied within 4 hours after surface preparation.

*When using solvents, extinguish all ignition sources, including pilot lights, and

follow the manufacturer’s precautions and directions for use. Use solvents in

accordance with local regulations.

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