Electroless copper plating solution for zinc alloy and application of electroless copper plating solution

Abstract

The invention relates to an electroless copper plating solution for a zinc alloy and the application of the electroless copper plating solution, belonging to the technical field of metal surface chemical treatment. The electroless copper plating solution mainly comprises copper salt, a reducing agent, a complexing agent, a stabilizer, a surfactant and an accelerant, wherein the concentration of each component is as follows: the concentration of the copper salt is 10-30 g / L; the concentration of the reducing agent is 5-20 g / L; the concentration of the stabilizer is 7-50 mg / L; the concentration of the complexing agent is 30-120 g / L; the concentration of the surfactant is 5-80 mg / L; and the concentration of the accelerant is 0.1-15 g / L. By using the electroless copper plating solution for the zinc alloy provided by the invention, a pretreatment procedure for traditional electroless copper plating for the zinc alloy is shortened, and requirement of electroless copper plating on temperature conditions is also lowered. By adopting the electroless copper plating solution provided by the invention, the electroless copper plating rate during zinc alloy electroless copper plating can be greatly improved; the plating layer of an obtained product is uniform; the plating layer is combined with a substrate well; and large-scale application is convenient.

Description

technical field [0001] The invention relates to a zinc alloy electroless copper plating solution and its application, belonging to the technical field of metal surface chemical treatment. Background technique: [0002] Zinc alloys are widely used in various decorative fields, such as furniture accessories, architectural decoration, bathroom accessories, toys, various metal buckles, lighting parts, etc. However, the surface of zinc alloy is prone to oxidation and corrosion in the environment, which affects its aesthetics, and with the extension of oxidation and corrosion time, other properties of zinc alloy will also be greatly affected. Therefore, it is very necessary to protect the surface of zinc alloy during application. Zinc is an amphoteric metal, and its standard electrode potential is -0.76V. Therefore, zinc and zinc alloys have relatively high chemical activity. Whether it is electroplating or electroless plating, the surface treatment of zinc has always been diffic...

AI Technical Summary

Problems solved by technology

Traditional zinc alloy electroless copper plating uses cyanide compounds or formaldehyde as reducing agents, which is harmful to the human body and pollutes the environment

The zinc alloy electroless copper plating process that has been developed at present usually requires a series of pretreatments on the zinc alloy, namely: degreasing, pickling, activation, etc. The process is complicated and the stability of the coating is poor.

Images