A6165 | Electrical conductivity Enhancer

A-6165 is a soluble, proprietary additive that on addition to a conductive adhesive formulation can significantly decrease the volume resistivity of the cured material. A-6165 is recommended for use as an additive in combination with metal fillers (e.g. silver or Ag coated Cu) to further decrease volume resistivity in electrically conductive adhesive compositions. The bulk of the conductivity comes from the silver flake in the adhesive. However, by our calculations, the A6165 further reduced the volume resistivity 200x when added to the adhesive mixture and thermally cured.

The recommended addition level of the A- 6165 to a metal-filled adhesive formulation is less than or equal to about 1% by weight of the formulation’s total resin content. Higher levels of the A-6165 can degrade the adhesion of the composition and do not necessarily further reduce volume resistivity. Addition of less than about 0.5% of by weight A-6165 to the resin base will not yield optimum electrical performance. The best electrical results are obtained when the resin system attains a gel point at or slightly above 160°C. Lower cure temperatures are usually insufficient to activate the A-6165.