Making conductive adhesive (lacquer) using graphite and check his work

Today, in order to restore the track on the board or assemble a homemade electrical device, often used a special conductive adhesive called kontaktol. Of course, the price is not so high and is about 200 rubles, but what if it is not in the banal nearby stores or it you need a little bit just to restore the track, for example, board. On the Internet you can find tips for self-production of such other articles of graphite and glue or varnish. In this article, I will check whether this really nail (glue) works.

The list of required material

So, for the manufacture of home-made conductive adhesive with us you will need:

1. Graphite pencil (soft or very soft), as it is possible to use graphite rods from spent batteries, and in an ideal copper-graphite brushes with electrical appliances.

2. Glue or varnish, suitable absolutely everything that you have in stock.

3. Pliers.

All components are prepared, then it is possible to move on to production.

Making conductive adhesive (varnish)

To do this, we learn from our pencil graphite rod, then grind it into powder, and the smaller, the better.

Then, if you decide to use super glue, then take the tube and gently unfold it, as shown in the photo:

Then already disclosed in our fall asleep tube graphite powder, the ratio of the powder and the adhesive should be one to one.

Next we need to shuffle our conductive adhesive, for this we must take a large needle (you can get a toothpick or match) and mix thoroughly.

And then close the tube and securely stifle connection with pliers.

All you our conductive adhesive is ready to use.

If you are using as a base lacquer, the manufacturing process is exactly the same. But I recommend finding a small container with a tight-fitting lid, into which you pour the right amount of polish and is directly in the container will mix graphite and varnish.

Note. If the conductive paint dried up a bit, it is quite possible to dilute the solvent and re-used for other purposes. But such a focus with Superglue will not pass.

check performance

So, our mixture is ready, let's check how it works. I opted for the lacquer and graphite mixture, so personally in my opinion, easier to work with paint, though it dries longer than glue.

I decided to combine the contacts LED strip via a conductive adhesive and zatipat it from crown. And that's what I did.

How do you see the second half of the LED strip, connected by conductive adhesive, does not light up. And that's why:

Varnish (adhesive) mixed with graphite actually restored chain, but in place of application, contact resistance formed (and therefore the LEDs are lit).

conclusion

Of course, this method of connection is no substitute for soldering, but to fix, such as a track on the keyboard or other chip is possible. be sure to also take into account that when a current flows in this area will be heated and quite substantial.

And to reduce the resistance in the conductive lacquer (glue) is desirable to add copper powder or silver.

For the rest, it is quite efficient replacement option kontaktola.

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