Fluid for removing vacuum metallic coated nickel layer for decorating nonmetallic surface

Abstract

This invention relates to a coating stripping solution for metal surface vacuum-coated with nickel. The coating stripping solution comprises: FeCl3 0.01 mol / L, HNO3 0.02 mol / L, HCl 0.08 mol / L, and NaCl 0.02 mol / L. The coating stripping solution has such advantages as rapid reaction, high stability, and uniform coating stripping, no metal residue, no side corrosion, low cost, high production efficiency, and easy control of the product quality.

Description

technical field [0001] The invention relates to a chemical solution for metal nickel treatment, in particular to a deplating solution for vacuum metal plating nickel for non-metal surface decoration. technical background [0002] At present, PC, that is, polycarbonate materials and acrylic and other non-metallic decorative surfaces, usually use vacuum metal coating, and then use the method of coating acid-resistant coatings to cover part of the metal coating, and then use chemical methods to remove the metal parts that are not covered. The removal of metal adopts the method of the previous stripping industry. The nickel stripping process generally uses a nitric acid solution with a concentration of 30%-50%, and the operating temperature is 20-45°C. It is a simple reaction between acid and metal, and the reaction speed is slow. It will slow down rapidly with the decrease of the acid concentration, and the operating environment is relatively poor, which is easy to cause pollut...

AI Technical Summary

Problems solved by technology

The removal of metal adopts the method of the previous stripping industry. The nickel stripping process generally uses a nitric acid solution with a concentration of 30%-50%, and the operating temperature is 20-45°C. It is a simple reaction between acid and metal, and the reaction speed is slow. It will slow down rapidly with the decrease of the acid concentration, and the operating environment is relatively poor, which is easy to cause pollution. The change of the concentration of the nitric acid solution makes it difficult to completely remove the metal coating and side corrosion during the entire metal corrosion process. Therefore, Low production efficiency and difficult quality control of finished products