DP820 datasheet(2/8 Pages) 3M

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3M™ Scotch-Weld™

Acrylic Adhesives

DP805 • DP820

- 2 -

Typical Cured

Properties

Product

3M™ Scotch-Weld™

Acrylic Adhesive

DP805

DP820

Color

Pale Yellow

Shore D Hardness5

Full Cure Time6

8-24 hrs. @ 73°F (23°C)

24-48 hrs. @ 73°F (23°C)

Elongation7

30%

50-75%

Tensile Strength7

3200 psi

—

Physical

Product

Scotch-Weld

Acrylic Adhesive

DP805

DP820

Glass Transition Temperature8 (Tg)

140°F (60°C)

136°F (58°C)

Coefficient of Thermal Expansion9

105 x 10-6

180 x 10-6

(units/units/°C)

60-212°F (20-100°C)

68-158°F (20-70°C)

Weight Loss at Temperature10

1% @ 275°F (135°C)

1% @ 266°F (130°C)

by Thermal Gravimetric Analysis (TGA)

5% @ 451°F (233°C)

5% @ 446°F (230°C)

Thermal

Product

Scotch-Weld

Acrylic Adhesive

DP805

DP820

Dielectric Constant11

3.6 @ 500 Hz

3.1 @ 500 Hz

3.6 @ 1 KHz

3.0 @ 1 KHz

3.5 @ 10 KHz

2.8 @ 10 KHz

3.4 @ 100 KHz

2.8 @ 100 KHz

Dissipation Factor11

0.046 @ 500 Hz

0.083 @ 500 Hz

0.037 @ 1 KHz

0.065 @ 1 KHz

0.023 @ 10 KHz

0.032 @ 10 KHz

0.018 @ 100 KHz

0.022 @ 100 KHz

Volume Resistivity12

1.1 x 1014 ohm-cm

2.2 x 1012 ohm-cm

Dielectric Strength13

—

3500 volts/mil

Surface Resistivity12

2.1 x 1015 ohms

1.6 x 1014 ohms

Electrical

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

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

5. ASTM D-2240.

6. Time to develop 80% of maximum overlap shear values.

7. Tensile and Elongation. Used procedure in 3M Test Method C-3094/ASTM D-882. Samples were 2 in. dumbbells with 0.125 in. neck and

.030 in. sample thickness. Separation rate was 2 inches per minute.

8. Determined using DSC and heating rate of 68°F (20°C) per minute.

9. Determined using Thermal Mechanical Analysis (TMA) and heating rate of 41°F (5°C) per minute. First heat values given.

10. By TGA in air at 50°F (10°C)/min. TGA-7.

11. ASTM D-150 at 73°F (23°C).

12. ASTM D-257 at 73°F (23°C).

13. ASTM D-149 at 73°F (23°C). Sample thickness 14 mils.

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