Conductive paint or conductive ink is usually a mixture containing a conductive powder (silver powder, copper powder, bronze powder, nickel powder, graphite,…) and a binder. Varieties of natural or synthetic resins (polymers) may be used as binders. Some binders are water based and some are solvent based.
Below are some of the formulations we have produced.
Lot#2001122 (60% metal)
120 g metal powder, 75 ml water + 1 ml surfactant + 1 g vitamin C (antioxidant), mixed and heated. 4% solution of PVOH added up to 200 mL level.
Lot#2001191
120 g silver powder, 50 ml water + 1 ml surfactant mixed and heated. 4% solution of PVOH 2288 added up to 160 mL level. (Settles down and require shaking, probably because of no ultrasound and no agar)
Lot#2009201
2 liters distilled water and 100 g PVOH 4988 mixed 2 hours cold and one hour for the binder. 50 mL water + surfactant + citric acid + 350 g copper CU7005F lot G8M450 +350 g binder.
75ml water + surfactant + 300 g silver + 300 g binder lot ECM209.