Urethane Adhesives

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Scotch-Weld Urethane Adhesive 3532 B/A at various temperatures

Specimens: 1/2-inch overlap shear, fiber reinforced plastic to primed steel .032-inch

bondline. Specimens were placed in an oven at designated temperature for the specified

time. Bonds were then cooled for 1 minute and pulled at a rate of 2-inch/min.

3M™ Scotch-Weld™ Urethane Adhesive 3535 B/A at 73°F (23°C)

Specimens: 1/2-inch overlap prepared from 1 x 4-inch x 2024 T-3 clad FPL etched

aluminum, .005-inch bondline. Specimens were pulled at 2 inches/min.

Temperature

Time (Minutes)

Overlap Shear Strength (PSI)

100°F (38°C)

10

0

30

240

45

500

60

650

120°F (49°C)

10

140

20

480

30

750

150°F (66°C)

5

120

10

400

15

760

180°F (82°C)

5

400

10

660

15

900

200°F (93°C)

2

340

5

660

10

900

225°F (107°C)

2

440

5

760

10

900

Time (Minutes)

Overlap Shear Strength (PSI)

50

15

16

30

227

45

689

60

858

75

1202

90

1507

105

1640

120

1460

180

1877

Time (Hours)

Overlap Shear Strength (PSI)

0.5

5

120

290

3

400

4

490

5

560

6

680

7

790

16

1200

24

1550

Typical Performance

Characteristics

(continued)

3M™ Scotch-Weld™ Urethane Adhesive 3532 B/A at room temperature

Specimens: 1/2-inch overlap fiber reinforced plastic to primed steel, 0.032-inch

bondline. Specimens were pulled at 2 inches/min.