Urethane Adhesive EC-3532 B/A

Technical Datasheet

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Directions for Use

1. Surfaces to be bonded must be dry and free from rust, oil, grease and wax.

grit) followed by wiping with a solvent such as MEK (methyl ethyl ketone),

MIBK (methyl isobutyl ketone) or Acetone.*

2. Primer Information:

3M™ Scotch-Weld™ Structural Adhesive Primer EC-3901 may be applied

by spray or brush. Air dry cycles for periods as short as 1/2 hour have been used

successfully with the force dry cycle. Humidity contributes greatly to satisfactory

use of this primer. Relative humidity of 25% or lower may cause difficulties and

should be thoroughly evaluated in the customers’ application.

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.

See Data Sheet for Scotch-Weld Structural Adhesive Primer EC-3901 for

directions for use.

*Note: When using solvents, extinguish all ignition sources including pilot lights,

read and follow manufacturer’s precautions and directions for use.

Overlap Shear Strength-Plastics: The following are minimum performance data

after a full cure showing the adhesion of Scotch-Weld EC-3532 B/A Adhesive. Data

was developed on 1/8-inch thick, 1/2-inch overlap, 1-inch wide specimens with .005-

inch thick bondlines that had been abraded and alcohol wiped prior to bonding.

Typical Performance

Characteristics

Overlap Shear Strength-Metals: The following are minimum performance data

after a full cure showing the adhesion of 3M™ Scotch-Weld™ Urethane Adhesive

EC-3532 B/A to etched aluminum. Data was developed on .063-inch thick 2024 T-3

clad aluminum. Test specimens were 1/2-inch overlap, 1-inch wide with .005-inch

thick bondlines pulled at a testing rate of .1-inch/min. All values are psi.

Substrate

Test Temperature

-40°F (-40°C)

75°F (24°C)

180°F (82°C)

Etched Aluminum

2500

2200

300

Substrate

Test Temperature

75°F (24°C)

Polycarbonate

700 psi

Storage

Store product at 60-80°F (16-27°C) for maximum storage life. Higher temperatures

reduce normal storage life. Lower temperatures cause increased viscosity of a

temporary nature. Rotate stock on a “first in-first out” basis.

Shelf Life

This product has a shelf life of one year from date of shipment when unopened and

properly stored.