What is the difference between nickel-free phosphating agent and silicon zirconium coating agent

Silicon-zirconium coating agent and nickel-free phosphating agent. Many people are familiar with phosphating agent, but less familiar with coating agent. The difference between phosphating agent and film agent is not clear at the time of purchase. Gao Yuan will tell you about phosphating agent and film agent to see what is the difference between phosphating agent and film agent.

1. Effect of phosphating agent and coating agent

Phosphating agent and coating agent are widely used as a kind of chemical in the pretreatment of professional spraying plants, which can provide a protective film for the sprayed workpiece and add a good adhesion layer for rust prevention and paint, powder, etc.

2. Difference between phosphating agent and coating agent

Phosphating agent and coating agent are actually the same kind of metal surface treatment agent, but their names are different in different regions. The principle of phosphating agent is that the phosphating solution itself reacts with the substrate to form a dense chemical conversion film on the surface of the substrate to protect the substrate;

The principle of the film coating agent is to use physical adsorption or pressure adsorption to make the film coating agent adhere to the surface of the substrate to protect the substrate.