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Chemically Resistant adhesives

Tra-Con Tra-Duct 2902 Room Temperature Conductive Silver Epoxy Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy, Electrically Conductive; Filled/Reinforced Thermoset

Material Notes: TRA-DUCT 2902 is an electrically conducting silver-filled epoxy compound recommended for electronic bonding and sealing applications that require a combination of good mechanical and electrical properties. This two-part, smooth paste formulation of refined pure silver and epoxy is free of solvents and copper or carbon additives. It develops strong, durable, electrically and thermally conducting bonds and coatings between many different and dissimilar materials such as metals, ceramics, glass and plastic laminates. TRA-DUCT 2902 cures at room temperature and can be used as a cold solder for heat-sensitive components where hot-soldering is impractical. It also can be used for the assembly and repair of electrical modules, printed circuits, wave guides, flat cables and high frequency shields. This adhesive complies with the requirements of NASA Outgassing Specification.

Information provided by Tra-Con Inc.

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Physical PropertiesMetricEnglishComments
Specific Gravity 3.20 g/cc3.20 g/ccMixed
Viscosity 20000 cP20000 cPMixed (cp #52, 10 rpm)
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 8080
Adhesive Bond Strength 4.83 MPa700 psiLap shear, alum to alum, 24 hrs @ 25°C
 6.89 MPa1000 psiLap shear, alum to alum, 2 hrs @ 65°C
 11.0 MPa1600 psiLap shear, alum to alum, 1 hr @ 110°C
 11.0 MPa1600 psiLap shear, alum to alum, 15 min @ 150°C
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 0.00030 ohm-cm0.00030 ohm-cmcured 5 min @ 160°C
 0.00050 ohm-cm0.00050 ohm-cmcured 15 min @ 150°C
 0.00060 ohm-cm0.00060 ohm-cmcured 1 hr @ 110°C
 0.00090 ohm-cm0.00090 ohm-cmcured 2 hrs @ 65°C
 0.0010 ohm-cm0.0010 ohm-cmcured 24 hrs @ 25°C
 
Thermal PropertiesMetricEnglishComments
CTE, linear 49.0 µm/m-°C
@Temperature 20.0 °C
27.2 µin/in-°F
@Temperature 68.0 °F
Thermal Conductivity 2.99 W/m-K20.8 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 52.0 °C126 °FUltimate Tg, 24 hrs @ 25°C
 
Processing PropertiesMetricEnglishComments
Cure Time  60.0 - 240 min
@Temperature 65.0 °C
1.00 - 4.00 hour
@Temperature 149 °F
 1440 min
@Temperature 25.0 °C
24.0 hour
@Temperature 77.0 °F
Pot Life 60 min60 min
 
Descriptive Properties
Color Silver
Cytotoxicity Study PassesISO 10993-5, elution method
Mix Ratio, parts by weight100/6Resin/Hardener
Outgassing, NASA Passes
Outgassing, NASA, %CVCM0.05

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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PTRAC077 / 71005

Chemically Resistant adhesives

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