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→Conductive Paints and Adhesives
=== Conductive Paints and Adhesives===
Conductive paints are precious metal preparations in liquid or paste form. They contain the metal filler material, fine silver particles as conductive pigments mostly in flake form, a paint compound on artificial resin basis, and an organic solvent <xr id="tab:Silver Paints, Conductive Pastes, and Conductive Adhesives"/> (Table 8.3). The solvent evaporates during drying in air or by aging at slightly elevated temperatures. This allows the silver particles to connect metallically and form conductive paths ''<xr id="fig:Flexible keyboard contact pattern printed with AUROMAL 170"/> (Fig. 8.3)''.<figure id="fig:Flexible keyboard contact pattern printed with AUROMAL 170">[[File:Flexible keyboard contact pattern printed with AUROMAL 170.jpg|right|thumb|Flexible keyboard contact pattern printed with AUROMAL 170]]</figure>
Conductive adhesives are used mostly for mechanical bonding with low thermal impact. As the adhesive components high-polymer organic substances such as epoxy resins and mixed polymers are mostly used. They are made electrically filler materials such as flake shaped silver powders (70 – 80 wt%). Silver based conductive adhesives are available as single or two component adhesive systems. Both types are hardening without the application of pressure.