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Metal adhesives

Tra-Con Tra-Bond 832-5 Flexible Epoxy
Categories: Polymer; Adhesive; Thermoset; Epoxy

Material Notes: TRA-BOND 832-5 is a flexible two component epoxy which is intended for bonding materials with mis-matched coefficients of expansion. It exhibits flexibility associated with polyurethanes but does not have the moisture sensitivity which usually creates bubbles during the application and cure of urethanes. TRA-BOND 832-5 has been found to be useful in such applications as bonding optical lenses in aluminum housings. As an example two three-inch long glass microscope slides were bonded to opposite sides of a 0.064 inch thick piece of aluminum and the sandwich was cycled from -75°C to 125°C ten times with no spalling of the glass or bond failure.

Information provided by Tra-Con Inc.

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Physical PropertiesMetricEnglishComments
Moisture Absorption 3.0 %3.0 %100% RH & 85°C
Viscosity 650 cP
@Temperature 25.0 °C
650 cP
@Temperature 77.0 °F
After mixing
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 7575
Adhesive Bond Strength 6.89 MPa1000 psiLap shear, alum to alum
 
Thermal PropertiesMetricEnglishComments
CTE, linear  58.0 µm/m-°C
@Temperature -118 - -54.0 °C
32.2 µin/in-°F
@Temperature -180 - -65.2 °F
 81.0 µm/m-°C
@Temperature -54.0 - -32.0 °C
45.0 µin/in-°F
@Temperature -65.2 - -25.6 °F
 173 µm/m-°C
@Temperature -32.0 - 25.0 °C
96.1 µin/in-°F
@Temperature -25.6 - 77.0 °F
 224 µm/m-°C
@Temperature 25.0 - 66.0 °C
124 µin/in-°F
@Temperature 77.0 - 151 °F
Glass Transition Temp, Tg -32.0 °C-25.6 °FUltimate Tg
 
Processing PropertiesMetricEnglishComments
Cure Time  180 min
@Temperature 100 °C
3.00 hour
@Temperature 212 °F
 480 min
@Temperature 75.0 °C
8.00 hour
@Temperature 167 °F
Working Life 480 min480 min
 
Descriptive Properties
Color BlueMixed
Mix Ratio, parts by weight100/143Resin/Hardener
Thixotropic Index 1

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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PTRAC171 / 71099

Metal adhesives

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