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Metal adhesives

Tra-Con Tra-Duct 2919 Room Temperature Conductive, Flexible Silver Epoxy Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy, Electrically Conductive; Filled/Reinforced Thermoset

Material Notes: TRA-DUCT 2919 is a non-bleeding, electrically conductive, silver-filled epoxy formulation recommended for electronic bonding, coating, and sealing applications that require high flexibility coupled with good electrical and mechanical properties. This two-part, thixotropic adhesive of refined pure silver and epoxy resin components is free of solvents and copper or carbon additives. It develops resilient, electrically and thermally conducting bonds and coatings between many different and dissimilar materials such as metals, ceramics, glass and plastic insulates. TRA-DUCT 2919 cures at room temperature and can be used as a flexible "cold-solder" for heat-sensitive components where hot-soldering is impractical. It also can be used for the assembly and repair of electrical modules, flexible circuits, membrane switches, wave guides, flat cable and high frequency shields.

Information provided by Tra-Con Inc.

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Physical PropertiesMetricEnglishComments
Specific Gravity 2.32 g/cc2.32 g/ccMixed
Solids Content 100 %100 %Reactive Solids Content
Volatile Organic Compounds (VOC) Content 24.41 g/l24.41 g/l
Viscosity 995000 cP
@Temperature 25.0 °C
995000 cP
@Temperature 77.0 °F
Mixed (sp #T-F, 10 rpm)
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 80804 hrs @ 65°C
Adhesive Bond Strength 0.621 MPa90.0 psiLap shear, alum to alum, 24 hrs @ 25°C
 1.17 MPa170 psiLap shear, alum to alum, 4 hrs @ 65°C
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 0.00011 ohm-cm0.00011 ohm-cmcured 4 hrs @ 65°C
 0.0016 ohm-cm0.0016 ohm-cmcured 24 hrs @ 25°C
 
Thermal PropertiesMetricEnglishComments
CTE, linear 35.0 µm/m-°C
@Temperature 20.0 °C
19.4 µin/in-°F
@Temperature 68.0 °F
Thermal Conductivity 1.60 W/m-K11.1 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 110 °C230 °F
Minimum Service Temperature, Air -60.0 °C-76.0 °F
Glass Transition Temp, Tg 4.00 °C39.2 °FUltimate Tg
 
Processing PropertiesMetricEnglishComments
Cure Time  240 min
@Temperature 65.0 °C
4.00 hour
@Temperature 149 °F
 1440 min
@Temperature 25.0 °C
24.0 hour
@Temperature 77.0 °F
Pot Life 30 min30 min
 
Descriptive Properties
Color Silver
Mix Ratio, parts by weight90/100Resin/Hardener
Thixotropic Index 4.95 rpm/50 rpm

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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Metal adhesives

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