How to Make Conductive Epoxy Adhesive Using 2B Graphite Powder and Two-Component Glue

Name: How to Make Conductive Epoxy Adhesive Using 2B Graphite Powder and Two-Component Glue
Uploaded: 2023-10-17T21:00:11+02:00
Description: It is very easy to make conductive glue on your own range: - buy two-component epoxy glue (5 minutes) - buy a regular 2B pencil (soft pencils have proportion higher pure graphite content) 1.Graphite pencil insert should be wiped off with a very fine one sandpaper (e.g. 300 and more) 2.Mix both...

Question

It is very easy to make conductive glue on your own range: - buy two-component epoxy glue (5 minutes) - buy a regular 2B pencil (soft pencils have proportion higher pure graphite content) 1.Graphite pencil insert should be wiped off with a very fine one sandpaper (e.g. 300 and more) 2.Mix both...

brofran · Answer

Similarly, such a metal-based glue can be prepared. Instead of graphite, use copper filings - some kind of rod, or File the thicker sheet metal with a file.

Andre66 · Answer

Or maybe just a bit of varnish without color and graphite from the remote control battery is excellent

kruchy · Answer

The Ergom company from Łódź sells a ready-made conductive adhesive. I do not have the catalog with me, but on Monday I will check it at work and give you the price and name of this product. For those interested, phone to the sales department: phone (+48 42) 68-93-389; 68-93-390, fax. (+48 42) 68-93-399.

Fragile

Witcher · Answer

Hmm, it depends on what the glue is for ... I wonder what about the bridging of the prock?

and as for the store ones:
Electrically conductive adhesive ELPOX 15 (E-ZFIX) gross PLN: 17

Electrically conductive one-component acrylic varnish ELECTON 40AC (E-ZFIX) gross PLN: 23

The prices were taken from "http://www.4max.com.pl"

pioter · Answer

A pencil is poorly conductive, copper or sheet metal is difficult to sand down to a fine form in a short time. The best result so far was sanding a graphite brush for a vacuum cleaner motor. (the cost of such a brush = the cost of 2 pencils, with the brush getting more dust.) I'll try toner tomorrow.

Arctik · Answer

Does anyone know where you can buy a varnish based on silver filings in Krakow?

wawaldek · Answer

I successfully use an adhesive designed to repair heated car windows. I bought in an art store. automotive for about PLN 15.
I use it to repair remote controls, potentiometers and foils, e.g. in microwave ovens. It's on acetone (or something like that) and probably silver-based - I use nitro for dilution.

koziolek7 · Answer

And can this heated windshield adhesive be used to repair BGA pads?

gryzzly · Answer

Not because, firstly, it will not withstand the soldering temperature, secondly, do you want the BGA ball to be soldered to such a pad ???

jezdzeleonemfsi · Answer

Refreshing the topic, I developed an adhesive in which I used 20 g of epoxy resin, 16 g of hardener and 2 g of copper powder. After curing the glue in a rectangular form, I applied the lab power supply clamps to both ends of it, but the current did not flow, can anyone say why? How to do it better?

Anonymous · Answer

2 g of powder is not enough, the proportions should be quite different, because you gave the copper content around 5%, which is almost nothing, and it should be a lot and a lot more.

jezdzeleonemfsi · Answer

Okay, thanks. Will try to use more.

Anonymous · Answer

I got to the topic from google, having previously checked the prices and availability of all conductive varnishes. Let me put it bluntly, there is a price massacre, so I join the topic. You tell colleagues that graphite conducts poorly. There are many videos on the net showing how a pencil conducts and conducts so that at 230V and 8A power consumption from the device, the pencil burns completely and the graphite turns orange. It is known that there are few such powers in consumer electronics, but it is not so. It is mainly about repairs, for example, power supplies, etc. (TVs), there in "jumps" and with 300V for leds can be. How is graphite resistance? Anyone know the specific parameters?
Second question, what did you get out of the "polished brush + glue" adventure? Exactly what type of glue did you use and how did it come up with the copper?
For me - the above-mentioned 5% - is also too little, I personally think that the glue is only supposed to be a binder connecting a given "powder", so 75-80% of the powder in relation to 20-25% of the glue is probably the right value.
I broke the remote control in half, I have these paths to the ears to solder and for the 2x1.5 ml of varnish (from AG) I will not give the 8-10 PLN for a lot, oh no, no - that's why I combine.

zasilaczen · Answer

Supposedly, the current is conducted by black glass silicone, which is a bit strange because silicones are insulators.
But here the guy successfully makes a short circuit with it. Someone may know why this happens?
What does black silicone have in its composition that it can conduct?

.

brofran · Answer

Ordinary black silicone 100% does not conduct electricity. The video probably used silicone for repairing heating windows in cars ( older type , because in newer ones the heating wires are embedded in glass ) .

tzok · Answer

This is not a silicone, but a glass adhesive/sealant! Something like Sikaflex (although I don't know if it actually conducts electricity).

^ToM^ · Answer

Well, and what is the resistivity of this, self-made glue? Has anyone measured?

I use the factory glue for repairs:
Link

I have these tips.
1. The glue is flexible, so you can repair flexible tape with conductive paths. (The above-mentioned resin-based glue will probably crumble when bending.)
2. The glue conducts only after drying. It is best to leave it for 12-24 h.
3. Store in the refrigerator, because then it does not dry out and you can have it for years - before using it, remove and warm the vial in your hands. Stored normally, it will dry out in six months even though the seal is rubber in the vial.
4. Use the brush from the kit to apply, because it provides extreme precision in application. Wash in IPA or gasoline after use.

Greetings!

Hot_Amir · Answer

@zasilaczen Can you translate the voice of this video into Farsi?

Hot_Amir · Answer

@ElektrodaBot

How to Make Conductive Epoxy Adhesive Using 2B Graphite Powder and Two-Component Glue

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