REXI silver mirror is coated with a layer of metallic silver on the back of the glass, so that it has a function of reflecting light and imaging.
In China silver mirror glass factory, the surface of the glass that forms the reflective imaging surface is processed by electroless silver plating and vacuum evaporation. The most commonly used method is electroless silver plating.
This method is to dissolve silver nitrate in water, add ammonia water and sodium hydroxide solution and dilute it into silver hydroxide double salt to make silver plating solution. Invert sugar or formaldehyde, sodium potassium tartrate solution as a reducing solution.
After the glass is cut, grinding (if necessary, it is also polished) and the surface is cleaned by China silver mirror manufacturers, the solution is sensitized with a dilute solution of stannous chloride, and then washed. The silver plating solution and the reducing liquid are mixed to immediately inject the surface. After the formation is cleaned, copper plating and protective lacquer can be applied. In the vacuum evaporation method of China silver mirror suppliers, the glass is washed and placed in a vapor deposition device having a vacuum degree of 0.1 to 10 Pa.
The spiral tungsten wire is electrified, and the generated high temperature causes the aluminum alloy in the spiral to evaporate into a gaseous state and deposit on the glass surface to form a mirror surface. An electron gun can also be used instead of tungsten heating. The vacuum evaporation method also make smooth metal surfaces to be mirrored. The chemical reagent price influences the silver mirror price.