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EC2216 Datasheet(PDF) 3 Page - 3M Electronics |
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EC2216 Datasheet(HTML) 3 Page - 3M Electronics |
3 / 9 page 3M™ Scotch-Weld™ 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. - 3 - |
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