Silver plating method for glass mirror

Abstract

The invention relates to a silver plating method for a glass mirror. The method comprises the steps of: cleaning the glass, sensitizing, super sensitizing, sliver plating, passivating, secondarily passivating, primer painting, primer baking, finish-paint painting, air cooling, surface scouring, indicating cleaning and acquiring finished product, wherein the silver plating process includes a primary silver plating and a secondary silver plating; the primary silver plating is performed before the secondary silver plating; the unit area silver mass on the glass is 100 to 200 mg / m2 after the primary silver plating; the reducing solution in the reaction solution is low speed reaction reducing solution; the unit area silver mass on the glass is 700 to 800 mg / m2 after the secondary silver plating; and the reducing solution in the reaction solution is high speed reaction reducing solution. The invention has the advantages of promoting the reflection ratio of the glass mirror and increasing the thickness.

Description

1. Technical field [0001] The invention relates to a silver plating method, in particular to a silver plating method for glass mirrors. 2. Background technology [0002] At present, the silver plating method of glass mirrors is as follows: glass cleaning → sensitization → hypersensitization → silver plating → passivation → secondary passivation → primer coating → primer baking → surface coating → air cooling → pickling Surface → display cleaning → finished product; the silver plating process adopts the method of one-time silver plating, that is, the reduction reaction of silver nitrate is carried out with the reducing solution, and the reaction temperature is 28-30°C; currently, the silver plating layer of the glass mirror is required to be made The reflectivity of the glass mirror is high and the thickness of the silver layer is increased at the same time; but to improve the reflectivity of the glass mirror, the compactness of the silver layer will be improved, which can on...

AI Technical Summary

Problems solved by technology

[0002] At present, the silver plating method of glass mirrors is as follows: glass cleaning → sensitization → hypersensitization → silver plating → passivation → secondary passivation → primer coating → primer baking → surface coating → air cooling → pickling Surface → display cleaning → finished product; the silver plating process adopts the method of one-time silver plating, that is, the reduction reaction of silver nitrate is carried out with the reducing solution, and the reaction temperature is 28-30°C; currently, the silver plating layer of the glass mirror is required to be made The reflectivity of the glass mirror is high and the thickness of the silver layer is increased at the same time; but to improve the reflectivity of the glass mirror, the compactness of the silver layer will be improved, which can only be achieved by reducing the reaction rate of the reaction solution during silver plating, but the reaction rate of the reaction solution is reduced Simultaneously can reduce the conversion rate of silver nitrate in the reaction solution and the thickness of silver layer; On the contrary will improve the silver layer thickness of glass mirror only by improving the reaction speed of reaction solution when silver plating, thus improve the conversion rate and silver layer of silver nitrate in the reaction solution The thickness of the silver layer, but it will reduce the density of the silver layer, thereby reducing the reflectivity of the glass mirror