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Metal adhesives

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Tra-Con Tra-Bond 872-3 Flexible Epoxy Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy

Material Notes: TRA-BOND 872-3 transparent, flexible epoxy adhesive is designed for bonding materials with mismatched coefficients of thermal expansion. The long working life of this adhesive makes it ideal for use in automated dispensing processes. It readily bonds to ceramics, glass, most metals, and many plastics, and it is therefore especially useful for aerospace and electronic applications where its flexibility, consistency and self-sealing properties are needed (i.e. repottable electronic assemblies). Fully cured TRA-BOND 872-3 is a translucent electrical insulator which is mechanically strong and tougher than comparable silicone gels, and it is further resistant to water, weather, gases and vapors, petroleum products (fuels, solvents and lubricants), mild acids and alkalis, salt solutions and many other organic and inorganic compounds.

Information provided by Tra-Con Inc.

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Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 70
Adhesive Bond Strength 1400 psiLap shear, alum to alum
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.00e+12 ohm-cm
Dielectric Constant 6.2
Dissipation Factor 0.040
 
Thermal PropertiesOriginal ValueComments
CTE, linear 62.0 µm/m-°CBelow Tg
 240 µm/m-°CAbove Tg
Glass Transition Temp, Tg -11.0 °CUltimate Tg
 
Optical PropertiesOriginal ValueComments
Transmission, Visible 90 %transparent; thickness not quantified
 
Processing PropertiesOriginal ValueComments
Cure Time 3.00 hour
@Temperature 100 °C
 8.00 hour
@Temperature 75.0 °C
Shelf Life 12.0 Month
@Temperature -40.0 °C
 
Descriptive Properties
Color Translucent
Working Life hours 8At 25°C

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 go back to viewing the property data in MatWeb's normal format.

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PTRAC181 / 71109

Metal adhesives

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