Technical Product Bulletin
Single Component, Microelectronic Conductive Epoxy Adhesive
PRODUCT DESCRIPTION
AA-DUCT 2979 is a fast curing one part epoxy adhesive with superior electrical conductivity and bonding capability.
AA-DUCT 2979 has been shown to retain their properties through hundreds of hours of rapid temperature cycling and has also high impact absorption and stress resistance.
AA-DUCT 2979 contains no volatile, harmful solvents or lead, and conforms to all of the requirements of the solder replacement market.
PRODUCT PROPERTIES
| Color | Silver |
| Cure Type | Heat cure |
| Benefits |
● One component no mixing required ● High strength ● Excellent mechanical, electrical properties |
| Substrates | Excellent choice for Integrated Circuits, aluminum, magnesium, steel, bronze, nickel, ceramic, glass, and G-10 epoxy glass boards. |
| Operating Temperature | –40°C (-40°F) to +165°C (329°F) |
| Out gassing, NASA | Passes |
UNCURED PROPERTIES
| Viscosity @ 25 °C cps | 65,000 ±1000 @Temperature 77.0 °F |
| Specific Gravity gm/cc | 3.11 |
| Reactive solids contents, % | 100 |
| Pot Life | 2 months at 25°C (77.0 °F) 6 months at -40°C |
CURE SCHEDULE
| 1 hour | At 125°C (257°F) |
| 15 minutes | At 150°C (302°F) |
CURED PROPERTIES
| Hardness, Shore D | 86 |
| Volume Resistivity ohm. cm | 3 X 10⁻⁴ |
| Glass Transition Temp, Tg | 45 °C (113 °F) |
| Lap Shear Strength alum to alum, PSI | 9200 |
| Adhesive Bond Strength PSI | 1750 |
| Thermal Conductivity, W/m.K | 0.90 |
| Coefficient of Thermal Expansion | 57 X10⁻⁶ in/in/°C |
GENERAL INFORMATION
For safe handling information on this product, consult the Safety Data Sheet, (SDS).
HOW TO USE
- Carefully clean and dry all surfaces to be bonded.
- Apply AA-DUCT 2979 to the prepared surfaces.
- Bulk size: Some separation of components is common during shipping and storage. For this reason, it is recommended that the contents of the shipping container be thoroughly mixed prior to use.
- Allow the product to cure according to the cure schedule.
AVAILABILITY
This epoxy can be supplied in many different packages.
Data Sheets: TDS | MSDS available upon request.
