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Grease & Epoxy
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.
ORDERING INFORMATION
HANDLING CHARACTERISTICS
Part number
Net weight
Typical electrical and physical properties at room temperature with RT-7 hardener
4949G
4950G
4951G
4952G
4953G
0.8 oz (25 gram kit)
1.7 oz (50 gram kit)
3.5 oz (100 gram kit)
7.0 oz (200 gram kit)
4 lbs (1814 grams)
Color
Specific gravity
Working viscosity
Thermal conductivity
Thermal resistivity
Tensile strength
Compressive strength
Bond shear strength
Green
2.35
25,000 cps
1.34W/(m °C) (0.77 Btu/hr ?ft? °F)
29.4°C in/watt
6.34 x 10 7 Pa (9,2000 psi)
1.44 x 10 8 Pa (20,9000 psi)
3.17 x 10 7 Pa (4,6000 psi)
MIXING INSTRUCTIONS
aluminum to aluminum, 25.4mm (1") overlap @ 25°C, (77°F)
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:
Thermal coefficient of expansion
Water absorption, % after 10 days@ 25°C (77°F)
Hardness, Shore D
Volume resistivity
Dielectric strength
24 x 10 -6 /°C (1.32 x 10 -6 /°F)
0.20
86
1.0 x 10 16
59.1 x 10 3 volts/mm (1500 volts/mil)
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)
Dielectric constant@25°C (77°F) 100KHz
Dielectric factor@25°C (77°F) 100KHz
6.1
0.020
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).
Operating temperatures
Linear shrinkage
Shelf life
Pot life@25°C (77°F)
Suggested stripping agent
Cleaning solvent
-65°C to 155°C (-85°F to 311°F)
0.002 in/in
12 months*
2-3 hours
Miller-Stephenson MS 111
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.
AMERICA
USA Tel: +1 (603) 224-9988 email: info@aavid.com
ASIA
Singapore Tel: +65 6362 8388 email: sales@aavid.com.sg
www.aavidthermalloy.com
EUROPE
Italy Tel: +39 051 764011 email: sales.it@aavid.com
United Kingdom Tel: +44 1793 401400 email: sales.uk@aavid.com
Taiwan Tel: +886 (2) 2698-9888 email: sales@aavid.com.tw
115
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