Electrically conductive adhesive

Conductive paint is electrically conductive paint, which is mainly used in the electronics.

The electrical conductivity is generated by a very high proportion (up to 80 % and more) of conductive fillers in the coating matrix. The individual grains are in contact with each other and allow the flow of current.

Composition

Conductive paint there is on the basis of silver ( silver conductive or conductive silver ), copper ( copper conductive ) and graphite particles ( Graphitleitlack ).

The binder component may be a single-component solvent-based paint or a resin (one-or two-component). In particular, the resins are also useful as conductive adhesives.

Areas of application

With conductive ink can be, for example, repair defective traces on printed circuit boards by bridges this again and connects. This is useful in particular for flexible printed circuit boards, however, is only suitable for small flows. The electrical surface resistance of a dried layer is given by the manufacturer usually about 0.02-0.1 Ω.

Also, can you repair broken rear window heating with conductive paint of cars.

Conductive ink can be used to contact heat-sensitive electronic components, and is at low currents as an alternative to soldering.

In particular, silver-filled conductive inks have addition to the electrical and excellent thermal conductivity. This effect can be used in the heat sink assembly of processors and other components with a high power loss, see also thermal paste.

Conductive inks are used for producing conductive coatings, for example for shielding of electrical fields. Examples include the internal coating of plastic housings of electronic devices and components, or the outer coating of electron tubes. A further industrial application, the manufacturing ( printing) of single-layer bridges on circuit boards, by a layer of insulating material previously applied to the conductive path to be covered.

• Materials Science
• Electric Technical Material
• Functional material
• Paint