Structural Adhesive Film

AF 555

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B. Aluminum Honeycomb Core

D. Stainless Steel – Type 301

1. Soak in clean aliphatic naphtha (conforming to TT-N-95A) for five minutes

at room temperature. Dry 10 minutes at 140°F (maximum).

2. Optional – Immerse in etching solution above for 2 minutes 155 ± 5°F.

Rinse, air dry and force dry in a similar manner to skins.

processing have been used successfully with 3M™ Scotch-Weld™ Structural

Adhesive Film AF 555.

1. Vapor hone 140 grit in water – rinse thoroughly with clear running tap water.

2. Degrease – solvent or alkaline process.

3. Immerse for 15 minutes at 185 ± 5°F in the following bath:

Distilled water – Balance to make 1 liter

4. Immerse for 1 minute in 170 ± 5°F distilled water.

5. Spray rinse for 5 minutes in hot tap water ~ 130°F.

6. Air dry for 10 to 20 minutes.

7. Force dry for 15 minutes at 140°F (maximum).

8. It is advisable to bond or prime freshly cleaned surfaces within four hours.

*Available from Henkel North America.

1. Vapor hone 140 grit in water.

2. Rinse thoroughly in clear running tap water.

3. Alkaline degrease – see procedure above.

4. Rinse thoroughly in clear running tap water.

5. Immerse for 10 minutes at 75 ± 5°F in the following bath:

Distilled Water 73-95 oz/gal

Nitric Acid 42° Be 30-50 oz/gal

Hydrofluoric Acid 70% 3-5 oz/gal

6. Rinse thoroughly in clear running tap water.

7. Air dry for 10-20 minutes.

8. Force dry for 15 minutes at 150°F.

9. Bond or prime within four hours after preparing.

E. Cured fiberglass or carbon fiber reinforced epoxy resin based reinforced

plastic.

1. Abrade with 180 grit paper or 3M™ Scotch-Brite™ Scour Pad (do not

cut through resin into reinforcing fibers).

2. Degrease using acetone or using an unsized cheesecloth pad.

3. Air dry for two hours minimum.

XVI. Continued – Surface Preparation