Method for maintaining chemical-plating dispergation working fluid made from solid powder

Abstract

The invention discloses a method for maintaining chemical plating dispergation working fluid made from solid powder. Chemical plating solid dispergator comprises, by mass, from 70% to 90% of oxalic acid or oxalate, from 1% to 5% of potassium sodium tartrate and from 5% to 10% of sodium sulfate. The chemical plating dispergation working fluid is prepared by the total-solid powder and is convenient to use. Besides, owing to compound organic acid, the working stability of the dispergator is greatly improved, and the service life of the dispergator is greatly prolonged. Accordingly, the chemical plating production efficiency is greatly improved, and operation and maintenance are facilitated.

Description

technical field [0001] The invention belongs to the technical field of electroplating, in particular to the technology of debonding agent in electroless plating. Background technique [0002] In the electroless plating process, after the ABS workpiece is roughened, the hexavalent chromium ion is reduced by a reducing agent, and then immersed in the palladium catalytic working solution for catalytic activation, so that the surface of the ABS workpiece is enriched with a large amount of palladium colloid, and then washed with water Immerse in the degumming working solution for degumming treatment, and finally immerse in chemical copper or chemical nickel to deposit a copper or nickel layer. The role of the debonding agent treatment in this process is to remove the tin ions in the palladium colloid enriched on the surface of the ABS workpiece to expose the active sites of the palladium metal, so that the subsequent chemical copper or chemical nickel is deposited on the bare pal...

AI Technical Summary

Problems solved by technology

The degumming agent in the current production process is usually directly treated with hydrochloric acid, sulfuric acid or sodium hydroxide. This common degumming agent is unstable during the production process and must be reconstituted after working for 4 hours, and it is difficult to control its degumming. The degree of degumming leads to missing plating in the subsequent chemical plating; at the same time, the consumption is large and the working environment is harsh

In addition, in the production process, according to consumption, it is necessary to continuously add liquid debonding agent, which makes the liquid level in the electroplating tank rise, and it is inconvenient to add