Recently I came to know this so I am sharing. Take silver metal and add Isoamyl Acetate in that. Mix it using a brush like paint mixing. Thats it. Coat using the same, in few minutes the Isoamyl Acetate will get evaporated and you get a proper silver coat.
The art of making conductor paste is pretty complex. There are very few companies in the world (Dupont, Heraeus, Ferro, gigasolar etc). who pioneer this art. These conductor paste are generally made up of a organic carrier, glass frit and the metal particles (silver for example). These pastes are dried and fired after printing. After firing organic leave the system, glass melts and the metal particle sinters to give a uniform coherent structure. There are several tests involved at different stages of paste making to ensure that the paste after firing acquire the desire properties such as sheet resistance, bond strength etc.
These pastes are thixotropic which means their viscosity decreases when a shear force is applied on them. Their behavior can be compared with that of tooth paste which does not flow on its own but it flows on application of a shear force.
The carrier is generally made up of a mixture of a solvent and a binder. Many researchers use Terpineol as a solvent and ethyl cellulose as binder.
You can also check about various silver pastes:
https://www.tedpella.com/semmisc_html/sempaint.htm#anchor16062
C. Ranjith Dev Inbaseelan do you have any reference for the samme. Any Ag salt can be used or not. Metal in which form need to be used.
Thanks for a decent dose of knowledge. Would you recommend any scientific papers on this subject?
C. Ranjith Dev Inbaseelan Hi, I tried to disperse the silver powder into isoamyl acetate (235mg/mL), but the silver cannot disperse well and settle to the bottom. Any suggestion?
make silver paste，there have 2 main points:
1. Solve the problem of dispersion
2 control the indicators of raw materials.
If you don't realize these two points, the conclusions you get are accidental.
Your experiment can't be reproduced.
Every time you do it, new phenomena and conclusions will appear, causing you to lose direction.
I have worked in the conductive silver paste industry for 15 years and have rich experience. If you have any questions, please contact me and I can help you.
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