7022BG Datasheet, PDF (115/116 Pages) Aavid, Thermal Division of Boyd Corporation – Channel style heat sink with folded back fins

Thermalbond™
Thermalbond™ is a thermally conductive, high strength epoxy
adhesive. It provides exceptional adhesion to copper, aluminum,
steel, glass, ceramics, and most plastics. Thermalbond^TM also has a
coefficient of thermal expansion compatible with aluminum, copper,
and brass, making it particularly well suited for thermally bonding
semiconductors and other components to chassis or heat sinks.
Grease & Epoxy
ORDERING INFORMATION
Part number
Net weight
4949G
0.8 oz (25 gram kit)
4950G
1.7 oz (50 gram kit)
4951G
3.5 oz (100 gram kit)
4952G
7.0 oz (200 gram kit)
4953G
4 lbs (1814 grams)
MIXING INSTRUCTIONS
Mix resin thoroughly before removing material.
Add 7.1 parts of RT-7 hardener to 100 parts of resin
by weight, or 17 parts of RT-7 hardener to 100 parts
of resin by volume. Adhesive will set up in:
24 hrs at 25°C (77°F)
2 hrs. at 65°C (149°F)
1 hr. at 100°C (212°F)
30min. at 130°C (266°F)
Note: For maximum electrical and physical properties, a post cure is neccessary.
Post cure at room temperature for 4 days or for 4 hours at 93°C (200°F).
HANDLING CHARACTERISTICS
Typical electrical and physical properties at room temperature with RT-7 hardener
Color
Green
Specific gravity
2.35
Working viscosity
25,000 cps
Thermal conductivity
1.34W/(m °C) (0.77 Btu/hr •ft• °F)
Thermal resistivity
29.4°C in/watt
Tensile strength
6.34 x 10⁷ Pa (9,2000 psi)
Compressive strength
1.44 x 10⁸ Pa (20,9000 psi)
Bond shear strength
aluminum to aluminum, 25.4mm (1") overlap @ 25°C, (77°F)
3.17 x 10⁷ Pa (4,6000 psi)
Thermal coefficient of expansion
24 x 10^-6/°C (1.32 x 10^-6/°F)
Water absorption, % after 10 days@ 25°C (77°F)
0.20
Hardness, Shore D
86
Volume resistivity
1.0 x 10¹⁶
Dielectric strength
59.1 x 10³ volts/mm (1500 volts/mil)
Dielectric constant@25°C (77°F) 100KHz
6.1
Dielectric factor@25°C (77°F) 100KHz
0.020
Operating temperatures
-65°C to 155°C (-85°F to 311°F)
Linear shrinkage
0.002 in/in
Shelf life
12 months*
Pot life@25°C (77°F)
2-3 hours
Suggested stripping agent
Miller-Stephenson MS 111
Cleaning solvent
Acetone
* Stated shelf life is from date of manufacture. To allow for inventory cycle, product shipped from Aavid will
have less than 12 months remaining shelf life. Aavid guarantees a minimum of 3 months remaining shelf life.
Please adjust order quantity so all product will be consumed within 3 months of date of shipment.
www.aavidthermalloy.com
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