Core Splice Adhesive Film

AF 3002

- 2 -

Product Performance

Note: The following technical information and data should be considered representative

or typical only and should not be used for specification purposes.

1. Cured Density:

The free film cured density for 3M™ Scotch-Weld™ Core Splice Adhesive Film

AF 3002 has been determined using the specific gravity method outlined in 3M

Test Method C-2310-2.

Cure Cycle A: 250°F (121°C) – 0 psig – 60 min. – 10°F/min. warmup.

Cured Density: 40 lbs./cubic foot (approx.).

Cure Cycle B: 350°F (177°C) – 0 psig – 60 min. – 10°F/min. warmup.

Cured Density: 35 lbs./cubic foot (approx.).

2. Per Cent Expansion During Cure:

The free film per cent volume expansion during cure for Scotch-Weld AF 3002

has been determined from the change in specific gravity in going from the uncured

to the cured state as outlined in 3M Test Method C-276.

Cure Cycle A: 250°F (121°C) – 0 psig – 60 min. – 10°F/min. warmup.

Per Cent Volume Expansion: 35% (approx.).

Cure Cycle B: 350°F (177°C) – 0 psig – 60 min. – 10°F/min. warmup.

Per Cent Volume Expansion: 55% (approx.).

3. Splice Delamination Strength:

Splice delamination strength has been determined on Scotch-Weld AF 3002 in

accordance with the procedure outlined in MIL-C-7438F para. 4.7.9.

Core: 5052 alloy – 1/4" cell – 0.004" foil – 5/8" thick – nonperforated.

Specimen: 5" x 10" (core ribbon perpendicular to ten inch dimension).

Splice Position: Centered and perpendicular to the 10" dimension running the full width of

the specimen.

No. of layers: Two (for smaller cell sizes single layers of film are suggested).

Load Rate: 0.25"/minute.

A. Cure Cycle: 250°F (121°C) – 0 psig – 60 min. – 10°F/min. warmup.

B. Cure Cycle: 350°F (177°C) – 0 psig – 60 min. – 10°F/min. warmup.

MIL-C-7438F

Test Temperature

Requirement

Cure A strength

Cure B strength

75°F (24°C)

40 lbs.

50-100 lbs.

50-100 lbs.

Core failure

Core failure

Note: Width of range is a result of strength variation of core node bonds which normally fail at

lower loads than the strength of the splice.