Commonly usedSilver pasteThere may be volatile substances present, such as mineral oil and various additives, with the aim of ensuring that the silver paste has good stability and dispersion properties. Therefore, when storing the silver paste, proper sealing measures must be taken.

　　If a product cannot be used up in one go after opening, it must be sealed immediately. Otherwise, if the silver paste comes into contact with air for a long time, it will dry out and oxidize, causing the silver paste to be unevenly dispersed, with small particles and turning black. Under normal conditions, well-sealed silver paste can be stored for more than one year.

　　UseSilver pasteAn important step is dispersion. Usually, we disperse the silver paste in some solvents. If a wetting agent can be added, and it is soaked for a while, then slowly stirred to make it into a uniform liquid, and then it is added to the prepared paint, it can achieve a better application effect. When dispersing the silver paste, high shear force must not be used for stirring, as it will cause deformation of the thin aluminum sheet and affect the appearance effect. Therefore, a slow stirring method must be used.

　　The paint containing silver paste must also meet certain requirements. If the acid value of the paint is too high, it will reduce the stability of the paint's storage and cause the paint to turn black and become coarse. The solvent in the conductive silver paste plays a role in dissolving resins, allowing the conductive particles to be fully dispersed in the polymer; adjusting the viscosity and viscosity stability of the conductive silver paste; determining the drying speed; improving the surface condition of the substrate, so that the paste has a good adhesion with the substrate. The solubility and polarity of the solvent in the conductive silver paste are important parameters for selecting the solvent, because the solvent has a significant impact on the printing compatibility and the bonding and curing of the substrate. 
In addition, factors such as the boiling point of the solvent, the magnitude of the saturated vapor pressure, and the toxicity of the palladium-carbon catalyst recovery to the human body should all be taken into consideration. The boiling point and saturated vapor pressure of the solvent are of great significance to the stability of the printing material and the durability of the operation; they also have a decisive influence on the heating curing temperature and rate. Generally, high-boiling-point solvents are selected, and commonly used ones include BCA (butyl anhydride acetate), diethylene glycol butyl ether acetate, diethylene glycol acetate, isophorone, etc. The additives in conductive silver paste mainly refer toConductive silver pasteThe dispersants, leveling agents, oxygen inhibitors for metal particles, stabilizers, etc.