EC2216 3M, EC2216 Datasheet - Page 4

• Manufacturer Part Number: EC2216
• Description: Chemicals
• Manufacturer: 3M

Specifications of EC2216

• Product: Epoxy Compounds
• Other names: 02120056659

3M
Epoxy Adhesive
2216 B/A
Surface Preparation
(continued)
™
Scotch-Weld
Aluminum (Chemical Etch)
Aluminum alloys may be chemically cleaned and etched as per ASTM D 2651. This
procedure states to:
1. Alkaline Degrease – Oakite 164 solution (9-11 oz/gal of water) at 190°F ± 10°F
2. Optimized FPL Etch Solution (1 liter):
3. Rinse: Rinse panels in clear running tap water.
4. Dry: Air dry 15 minutes; force dry 10 minutes (minimum) at 140°F (60°C)
5. If primer is to be used, it should be applied within 4 hours after surface
Plastics/Rubber
1. Wipe with isopropyl alcohol.*
2. Abrade using fine grit abrasives (180 grit or finer).
3. Wipe with isopropyl alcohol.*
Glass
1. Solvent wipe surface using acetone or MEK.*
2. Apply a thin coating (0.0001 in. or less) of 3M™ Scotch-Weld™ Structural
*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.
(88°C ± 5°C) for 10-20 minutes. Rinse immediately in large quantities of cold
running water.
maximum.
preparation.
Adhesive Primer EC-3901 to the glass surfaces to be bonded and allow the primer
to dry a minimum of 30 minutes @ 75°F (24°C) before bonding.
Material
Distilled Water
Sodium Dichromate
Sulfuric Acid
Aluminum Chips
To prepare 1 liter of this solution, dissolve sodium dichromate in 700 ml of
distilled water. Add sulfuric acid and mix well. Add additional distilled water to
fill to 1 liter. Heat mixed solution to 66 to 71°C (150 to 160°F). Dissolve 1.5
grams of 2024 bare aluminum chips per liter of mixed solution. Gentle agitation
will help aluminum dissolve in about 24 hours.
To etch aluminum panels, place them in FPL etch solution heated to 66 to 71°C
(150 to 160°F). Panels should soak for 12 to 15 minutes.
™
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Amount
700 ml plus balance of liter (see below)
28 to 67.3 grams
287.9 to 310.0 grams
1.5 grams/liter of mixed solution