Technical Data | November 2015
3M Scotch-Weld Epoxy Adhesive DP-460EG
Product Description
3M Scotch-Weld Epoxy Adhesive DP-460EG is designed to have lower outgassing and lower ionics than
3M Scotch-Weld Epoxy Adhesive DP-460. Laboratory testing has shown that 3M Scotch-Weld Epoxy
Adhesive DP-460EGs curing and adhesive performance to be comparable to 3M Scotch-Weld Epoxy
Adhesive DP-460.
Application Ideas
Hard Disk Drive Assembly Bearing Cartridge Assembly
Spindle Motor Assembly Potting
Magnet Bonding Rigidizing
E-Block Assembly
Key Features
Curing and bonding performance comparable to 3M Scotch-Weld Epoxy Adhesive DP-460.
Total outgassing < 1000 g/g (via GC/MS, 85C for 3 hours).
Siloxane outgassing 5 g/g (via GC/MS, 85C for 3 hours).
Lower chloride ion content than standard epoxies.
Typical Physical Properties
Note: The following technical information and data should be consider ed representative or typical only and
should not be used for specification purposes.
3M Scotch-Weld Epoxy Adhesive DP460EG
Viscosity Base 25,000 - 45,000 cps
(at 72F [23C]) Accelerator 8,000 - 14,000 cps
Mixed 15,000 - 25,000 cps
Base Resin Base Epoxy
Accelerator Amine
Color Base White
Accelerator Amber
Net Weight Base 9.4
(lb/gallon) Accelerator 9.0
Mix Ratio Volume 2:1
(B:A) Weight 2:0 : 0.96
Worklife (72F [23C]) 110 minutes
Thermal Conductivity, (btu-ft./sq.ft.-hr.F) 0.104 @ 45C
-6
59 x 10 (-50C to 30C)
Thermal Coefficient of Expansion, (in./in./C)
-6
159 x 10 (50C to 110C)
Dielectric Constant, (1 KHZ @ 23C) 4.7
Dielectric Strength, (volts/mil.) 510 (43 mil)Resulting T (C)
g
3M Scotch-Weld Epoxy Adhesive DP-460EG
Curing
Note: The following technical information and data should be considered representative or typical only and
should not be used for specification purposes.
This adhesive will cure in 24 hours at room temperature. Heating will accelerate the cure and can result in a higher
T than room temperature curing yields. Curing data is shown in the figure below.
g
Time to Reach maximum T (C) for
g
3M Scotch-Weld Epoxy Adhesive DP-460EG
Cured using Various Conditions
1600 80
1400 70
T
g
1200 60
1000 50
800
40
Cure Time (min)
600 30
T (C)
g
Time
400 20
200 10
0 0
0 20 40 60 80 100 120 140
Cure Temperature (C)
Note: If the adhesive has become grainy or lumpy in appearance when dispensed, this may be due to crystallization
of the adhesive. This can be corrected by heating the adhesive in the syringe to 120F (49C) for 30 minutes,
then allowing the adhesive to cool before dispensing.
(2)
Cure Time (minutes)