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Metal adhesives

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Atom Adhesives AA-DUCT 2919 Epoxy Adhesive
Categories: Polymer; Adhesive; Thermoset; Epoxy; Epoxy Adhesive

Material Notes: AA-DUCT 2919 is a non-bleeding, electrically conductive, silver-filled epoxy formulation recommended for electronic bonding, coating, and sealing applications that require good 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. AA-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.

Appearance: Silver

Cure Type: Heat cure or Room temperature

Mix Ratio by weight: 90:100/Resin:Hardener

Benefits:

  • Free of solvents and copper or carbon additives
  • Coatings between many different and dissimilar materials
Substrates: Metal, Ceramics, Glass and Plastic

Typical Application:

  • Assembly and repair of electrical modules, flexible circuts, membrane switches, wave guides, flat cable and high frequency shields
  • Electronic bonding, coating and sealing applications
  • Can be used as a flexible “cold-solder”

Information provided by Atom Adhesives

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Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 80
Adhesive Bond Strength 90.0 psi
@Temperature 25.0 °C,
Time 86400 sec
Lap shear, alum to alum
 170 psi
@Temperature 65.0 °C,
Time 14400 sec
Lap shear, alum to alum
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 0.00011 ohm-cmcured 4 hrs @ 65°C
 0.0016 ohm-cmcured 24 hrs @ 25°C
 
Thermal PropertiesOriginal ValueComments
CTE, linear 34.9 µm/m-°C
Thermal Conductivity 11.1 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 110 °C
Minimum Service Temperature, Air -60.0 °C
Glass Transition Temp, Tg 4.00 °C
 
Processing PropertiesOriginal ValueComments
Cure Time 4.00 hour
@Temperature 65.0 °C
 24.0 hour
@Temperature 25.0 °C
Shelf Life 12.0 Month
 
Descriptive Properties
Thixotropic Index4.9

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Metal adhesives

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