Acrylic Adhesives

- 5 -

Typical Adhesive

Performance

Characteristics

(continued)

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

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

Etched Al/Etched Al

OLS Bond Strength

Scotch-Weld

Scotch-Weld

Time Bonding to Testing

Acrylic Adhesive DP805

Acrylic Adhesive DP820

7 minutes

125

—

15 minutes

1000

—

30 minutes

2000

40

1 hour

2600

900

2 hours

2800

1700

4 hours

3200

2750

1 day

3500

3400

2 days

3500

3450

7 days

3500

3450

Peel Adhesion

3M™ Scotch-Weld™ 3M™ Scotch-Weld™

Acrylic Adhesive

Acrylic Adhesive

Substrate

Test Temperature

DP805

DP820

Etched Al/Etched Al

-67°F (-55°C)

20

19

Etched Al/Etched Al

73°F (23°C)

35

22

Etched Al/Etched Al

100°F (38°C)

35

22

Etched Al/Etched Al

130°F (54°C)

36

22

Etched Al/Etched Al

150°F (65°C)

35

22

Etched Al/Etched Al

180°F (83°C)

34

22

Neoprene/CRS

73°F (23°C)

11

Nitrile/CRS

73°F (23°C)

4

22

Red SBR/CRS

73°F (23°C)

–

Black SBR/CRS

73°F (23°C)

3

9

14. Overlap Shear (ASTM D-1002-64) (3M TM C-236) strengths were measured on 1 in. wide 1/2 in. overlap specimens. These bonds were

made individually using 1 in. x 4 in. pieces of substrate. The thickness of the bond line was 0.005 - 0.008 in. All strengths were measured

at 73°F (23°C) except when noted. The separation rate of the testing jaws was 0.1 in. per minute for metals, 2 in. per minute for plastics

and 20 in. per minute for rubbers. The thickness of the substrates were: steel 0.035 in.; other metals: 0.05-0.064 in.; rubbers, 0.125 in.;

plastics, 0.125 in.

15. Metal/metal bonds tested per 3M TM C-439 @ 20 in./min. at 73°F (23°C) substrate 0.020 in. thick. Metal/rubber bonds pulled at

10 in./min.

16. Rubber/metal bonds. Rubber sanded with 120 grit sandpaper then MEK wiped.

17. Rubber delamination/tear.