Spent meal for treating surface of copper and copper alloy and method for preparing same

Abstract

The invention discloses spent meal used for processing the surface of copper and copper alloy and a method for preparing the same. The compositions and the proportions of the spent meal are: 20 to 35 portions of sodium carbonate, 10 to 25 portions of trimeric sodium phosphate, 1 to 6 portions of nonylphenol polyoxyethylene ether, 10 to 20 portions of trisodium phosphate, 6 to 20 portions of sodium metasilicate pentahydrate, 1 to 5 portions of disodium, 15 to 35 portions of sodium hydroxide, and all the proportions being weight portions. The method for preparing the spent meal comprises the following steps of: evenly mixing and stirring the sodium carbonate and the trimeric sodium phosphate; adding the nonylphenol polyoxyethylene ether and evenly stirring; adding the trisodium phosphate and the sodium metasilicate pentahydrate and evenly stirring; and adding the disodium and the sodium hydroxide and evenly stirring to receive a finished product. The spent meal has strong emulsifying capacity and permeability, has the dirt dissolving capacity increased by 2 to 3 times and the cleaning period shortened by 1 to 3 times, does not discolor degreasing fluid during using, does not have corrodibility, does not destroy workpieces, is easily biodegraded and is advantageous to environmental protection.

Description

Degreasing powder for surface treatment of copper and copper alloy and preparation method thereof technical field The invention relates to a degreasing powder for surface treatment of nonferrous metals, in particular to a degreasing powder for surface treatment of copper and copper alloys, and also relates to a preparation method of the degreasing powder. Background technique Degreasing the surface of copper and copper alloys is an important process in workpiece processing, especially in electroplating production, which directly affects the processing and electroplating effect of workpieces. Although there are several degreasing powders used for non-ferrous metals at present, due to the limitations of their components, content and preparation methods, the degreasing treatment of copper and copper alloys generally has slow degreasing speed, easy discoloration, and slight corrosion to varying degrees. , resulting in many pitting defects in electroplating products, so the use...

AI Technical Summary

Problems solved by technology

Although there are several degreasing powders used for non-ferrous metals at present, due to the limitations of their components, content and preparation methods, the degreasing treatment of copper and copper alloys generally has slow degreasing speed, easy discoloration, and slight corrosion to varying degrees. , resulting in many pitting defects in electroplating products, so the use effect is not ideal

Images