Structural Adhesive Primer

EC-2174

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Storage

Avoid heat and dampness in storage. Store new shipments behind older lots.

Refrigerated storage 40°F ± 5°F (4°C ± 2°C) is suggested for Scotch-Weld EC-2174.

Rotate stock on a “first in – first out” basis.

Caution: Primer should be permitted to thoroughly warm to room temperature before

being used in order to prevent moisture condensation.

Surface Preparation

(continued)

Primer Dry/Cure:

The following cure for 3M™ Scotch-Weld™ Structural Adhesive Primer EC-2174 is

suggested for use with 3M™ Scotch-Weld™ Structural Adhesive Film AF 31.

Air Dry:

75-85°F [24-29°C] for a maximum of 60 min.

Force Dry:

Circulating air oven with part at 265°F [129°C] for 60 min.

The primed surface after cooling to ambient temperatures is ready for adhesive

bonding. The primed surface should be protected from contamination introduced by

dust, fingerprints, oil, etc. If extended periods of storage are contemplated, wrap the

parts in unplasticized Kraft paper. If the primed surface is contaminated with dust, it

may be cleaned prior to bonding by wiping with clean, unsized cheesecloth.

Primer Cleanup:

Excess primer and equipment may be cleaned up prior to curing with ketone* type

solvents.

*Note: When using solvents, extinguish all ignition sources and follow the

manufacturer’s precautions and directions for use.