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Metal adhesives

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Tra-Con Tra-Duct 2956 Low Ion Snap Cure Silver Epoxy Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Filled/Reinforced Thermoset

Material Notes: TRA-DUCT 2956 is recommended for the bonding and sealing of electronic components where a combination of electrical and mechanical properties are required. This two-part, smooth, paste system of silver filled epoxy is free of solvents and copper or carbon additives. It develops strong durable electrically and thermally conducting bonds and coatings between a number of materials such as metals, ceramics, glass and plastic laminates. TRA- DUCT 2956 cures at room temperature, which makes it extremely useful for bonding heat sensitive components where hot-soldering is impractical. Other common uses include the assembly and repair of electrical modules, printed circuits, wave guides, flat cable and high frequency shields. It is an excellent product for dot dispensing through needles as small as 6 mils.

Information provided by Tra-Con Inc.

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Physical PropertiesOriginal ValueComments
Specific Gravity 2.40 g/ccMixed
Viscosity 145000 cP
@Temperature 25.0 °C
After mixing
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 80
Adhesive Bond Strength 1000 psiLap shear, alum to alum, 2 min @ 150°C
 1000 psiLap shear, alum to alum, 5 min @ 100°C
 1000 psiLap shear, alum to alum, 72 hrs @ 25°C
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 0.00010 ohm-cmcured 72 hrs @ 25°C
 0.00020 ohm-cmcured 5 min @ 100°C
 0.00050 ohm-cmcured 2 min @ 150°C
 
Thermal PropertiesOriginal ValueComments
CTE, linear 49.0 µm/m-°C
@Temperature 20.0 °C
Thermal Conductivity 1.50 W/m-K
Maximum Service Temperature, Air 175 °C
Minimum Service Temperature, Air -55.0 °C
Glass Transition Temp, Tg 47.0 °CUltimate Tg
 
Processing PropertiesOriginal ValueComments
Cure Time 2.00 min
@Temperature 150 °C
 96.0 hour
@Temperature 25.0 °C
Pot Life 720 min
 
Descriptive Properties
Color Silver
Mix Ratio, parts by weight100/6Resin/Hardener
Thixotropic Index 3.95 rpm/50 rpm

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PTRAC092 / 71020

Metal adhesives

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