High-temperature silver paste

High temperature conductive silver paste is a high-performance conductive material composed of high-purity silver powder, binder, solvent, and additives. This product is particularly suitable for electronic devices that need to work in high-temperature environments, such as membrane switches, flexible circuit boards (FPCs), touch screens, etc. It has excellent conductivity, good adhesion, and high temperature stability.

Product Features

High conductivity: The silver powder content in high-temperature conductive silver paste is relatively high, and the silver powder particles are evenly distributed, ensuring its excellent conductivity.

High temperature resistance: It can maintain the stability and conductivity of the structure in high temperature environments, and is not easily oxidized, corroded, or melted.

Good adhesion: It can form good adhesion with various substrates such as ceramics, glass, metals, etc., ensuring the reliability of conductive connections.

Chemical stability: The ability to withstand chemical reactions at high temperatures and maintain the stability of its physical and chemical properties.

Good fluidity: The viscosity of high-temperature conductive silver paste decreases with increasing temperature, and it has good fluidity, making it easy to coat and fill small gaps.

Preparation process

Mechanical ball milling method: suitable for the production of flake silver powder, which achieves material crushing and refinement through external mechanical force.

Chemical reduction method: Directly reducing silver salts to prepare flake silver powder can effectively control reaction conditions and obtain uniformly structured flake silver powder.

Liquid phase reduction method: Based on the principle of oxidation-reduction reaction, suitable for industrial production, the silver paste produced has excellent screen printing characteristics.

Evaporative condensation method: Spherical silver powder is prepared by heating silver blocks to vaporize and then condensing them. The production cycle is short, and the silver powder has good sphericity and high crystallinity.

Silver salt decomposition method: Disperse thermally decomposable silver salt into aerosols, decompose and sinter them under heating conditions to obtain dense spherical silver powder.

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