3M

Epoxy Adhesives

DP125 Translucent and Gray

- 2 -

Typical Cured

Properties

Footnotes:

2. Worklife determined using 3M test

method C-3180. Procedure involves

periodically measuring a 2 gram

mixed mass for self leveling and

wetting properties. This time will

also approximate the usable

worklife

in an 3M™ EPX

Applicator mixing nozzle.

3. Tack-free time determined per 3M

test method C-3173. Involves

dispensing 0.5 gram amount of

adhesive onto substrate and

testing periodically for no adhesive

transfer to metal spatula.

4. Handling strength determined per

3M test method C-3179. Time to

handling strength taken to be that

required to achieve a 50 psi OLS

strength using aluminum

substrates.

5. The cure time is defined as that

time required for the adhesive to

achieve a minimum of 80% of the

ultimate strength as measured by

aluminum-aluminum OLS.

6. Tensile and Elongation. Used

procedure in 3M test method

C-3094/ATSM D 882. Samples

were 2 in. dumbbells with .0125 in.

neck and .030 in. sample

thickness. Separation rate was 2

inches per minute. Samples cured

2 hrs RT plus 2 hrs/160°F.

7. Weight loss by TGA reported as

that temperature at which 5%

weight loss occurs by TGA in air at

5°C rise per minute per ASTM

1131-86.

8. TCE determined using TMA

Analyzer using a heating rate of

10°C per minute. Second heat

values given.

9. Glass Transition Temperature (Tg)

determined using DSC Analyzer

with a heating rate of 20°C per

minute. Second heat values given.

10. Thermal conductivity determined

using ASTM C177 and C-matic

Instrument using 2 in. diameter

samples.

11. Thermal shock resistance run per

3M test method C-3174. Involves

potting a metal washer into a 2 in.

x 0.5 in. thick section and cycling

this test specimen to colder and

colder temperatures.

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

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

Physical

3M™ Scotch-Weld™

Epoxy Adhesive

DP125 Translucent

3M™ Scotch-Weld™

Epoxy Adhesive

DP125 Gray

Color

Translucent

Gray

Shore D

55

70

20-30 minutes

20-30 minutes

 2 hrs

 2 hrs

 2.5 hrs

 2.5 hrs

7 days

7 days

150%

120%

2500 psi

3300 psi

Thermal

3M™ Scotch-

Weld™ Epoxy

Adhesive DP125

Translucent

3M™ Scotch-

Weld™ Epoxy

Adhesive DP125

Gray

Weight Loss by Thermal Gravimetric

1% @ 164°C

5% @ 301°C

1% @ 176°C

5% @ 303°C

Thermal Coefficient of Expansion (TCE)

Below Tg

Above Tg

112 (5-20°C range)

190 (65-140°C range)

98 (5-20°C range)

187 (65-140°C range)

Glass Transition Temperature

Onset

Mid-Point

3°C

15°C

12°C

23°C

(@ 110°F on .250 in. samples)

Cal./sec. - cm - °C)

Watt/m - °C

.089

.154

.087

.151

Potted Washer Olyphant Test

(3M Test Method C-3174)

+100°C [air] to -50°C [liquid])

Pass 5 cycles

without cracking

Pass 5 cycles

without cracking

Electrical

3M™ Scotch-

Weld™ Epoxy

Adhesive DP125

Translucent

3M™ Scotch-

Weld™ Epoxy

Adhesive DP125

Gray

(ASTM D 150)

6.3

6.3

(ASTM D 150)

0.14

0.13

Dielectric Strength

765 volts/mil

680 volts/mil

Volume Resistivity

(ASTM D 257)