Datasheet

3M
™
Scotch-Weld
™
Epoxy Potting Compound/Adhesive
DP270 Clear and Black
Typical Cured
Properties (continued)
Note: The following technical information and data should be considered representative
or typical only and should not be used for specification purposes.
Corrosion:
Per ASTM D-3482
(35°C/95°F/96% R.H./45V d.c./15 days) Pass - No copper corrosion
Per 3M Test Method C-708
(45°C/113°F/96% R.H./250V d.c./5 days) Pass - No copper corrosion
(65°C/149°F/96% R.H./250V d.c./4 days) Pass - No copper corrosion
Per Mil S-46163
(10 days/50% R.H./23°C/73°F) Pass - No aluminum, brass or steel
discoloration or corrosion
Solvent Resistance:
(Visual check after immersion in specified solvent at 23°C (73°F)
1 Hour 1 Month
Acetone BC
Isopropyl Alcohol AB
Freon TF AA
Freon TMC BC
1,1,1-Trichloroethane AC
RMA Flux AB
Key: A - Unaffected
B - Slight Attack
C - Moderate/Severe Attack
- 4 -
Typical Adhesive
Performance
Characteristics
Note: The following technical information and data should be considered representative
or typical only and should not be used for specification purposes.
Although 3M™ Scotch-Weld™ Epoxy Potting Compound/Adhesive DP270 and 270
B/A can be used for many potting and encapsulation applications, they can also be used
as adhesives. The following shows typical shear and peel values determined on several
common substrates:
Overlap Shear Adhesion (ASTM D-1002-72)
Curing Conditions
7 days/73°F (23°C)
Alum./Alum. (etched) @-67°F (-55°C) 1200-1250 psi
@73°F (23°C) 2450-2500 psi
@180°F (82°C) 300-350 psi
FR-4/FR-4 (MEK Wiped) @73°F (23°C) 1750-1800 psi
Copper/Copper (MEK Wiped) @73°F (23°C) 1700-1750 psi
Alum./Alum. (etched) @73°F (23°C) < 2 piw
90° T-Peel Adhesion (ASTM D-1876-61T)
Scotch-Weld epoxy potting compound/adhesive @73°F (23°C) 8100 psi
DP270 Clear and Black
Compression Strength (ASTM D-695-68T)