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Metal adhesives

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Tra-Con Tra-Duct 2924 Conductive Silver Epoxy Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy, Electrically Conductive; Filled/Reinforced Thermoset

Material Notes: TRA-DUCT 2924 is a two part electrically conductive composition developed for low shrinkage, low resistivity bonding applications where good electrical and physical properties over a wide temperature range (up to 190°C) are required. This smooth paste formulation of refined pure silver and epoxy is free of solvents and copper or carbon additives. It can be used -- after REQUIRED high temperature cure cycle -- for the assembly, manufacture and repair of electronic modules, printed circuits, integrated circuits, electrical contacts, capacitors, wave guides and flat cables, for high-frequency RF shieldings, and for applications where a "hot" soldering iron is impractical. Fully cured TRA-DUCT 2924 is a hard, dimensionally stable, conductive material which is resistant to water, weathering, gases and vapors, lubricants, fuels, alcohol, and also to those salts, salt solutions, mild acids and alkalis, and other organic and inorganic compounds with which silver itself is compatible.

Information provided by Tra-Con Inc.

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Physical PropertiesOriginal ValueComments
Specific Gravity 2.65 g/ccMixed
Solids Content 100 %Reactive Solids Content
Viscosity 25000 cPMixed (cp #52, 10 rpm)
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 85
Adhesive Bond Strength 1270 psiLap shear, alum to alum, 2 hrs @ 100°C
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 0.00020 ohm-cmcured 2 hrs @ 125°C
 0.00050 ohm-cmcured 2 hrs @ 100°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 190 °C
Minimum Service Temperature, Air -60.0 °C
Glass Transition Temp, Tg 92.0 °CUltimate Tg
 
Processing PropertiesOriginal ValueComments
Cure Time 1.00 hour
@Temperature 125 °C
 2.00 hour
@Temperature 100 °C
Pot Life 240 min
 
Descriptive Properties
Color Silver
Mix Ratio, parts by weight100/5Resin/Hardener

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PTRAC084 / 71012

Metal adhesives

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