Plating pretreatment oil remover composite and preparation and use methods thereof

Abstract

The invention relates to a plating pretreatment oil remover composite and the preparation and use methods thereof. The oil remover composite can be widely used to remove oil from the surfaces of various base materials such as iron, copper, copper alloy, zinc, zinc alloy, aluminum and aluminum alloy and have the advantages of high efficiency, low concentration, long service life and environmental friend. The oil remover composite contains inorganic matter, nonionic surfactant and organic additive, uses deionized water as the solvent and comprises the following components in parts by weight: 20-60 parts of sodium carbonate, 10-20 parts of sodium phosphate, 15-30 parts of beta-naphthol ethoxylate, 1-30 parts of sodium hydroxide, 40-80 parts of inorganic emulsifier, 7-9 parts of organic emulsifier and 1000 parts of deionized water.

Description

[0001] technical field [0002] The invention relates to an electroplating pretreatment process, in particular to an electroplating pretreatment degreaser composition and a preparation and use method thereof. Background technique [0003] The substrate is the main body in metal finishing. The quality of the substrate is closely related to the performance of the final product. In order to prevent the substrate from being oxidized by oxygen in the air, the surface of the substrate is generally protected by a layer of grease. These greases must be cleaned before electroplating, otherwise defects will appear on the coating, such as pinholes, burrs, etc., which will lead to electroplating failure and rework in severe cases, resulting in loss of balance and stability of the plating solution. Therefore, it is very important to choose a high-quality degreasing product during the electroplating process. [0004] Commonly used degreasing products include organic and inorganic produ...

AI Technical Summary

Problems solved by technology

[0005] However, most of the common inorganic degreasers on the market contain a large amount of strong alkali sodium hydroxide, and some also contain highly toxic sodium cyanide, which will corrode active substrates, such as aluminum alloys, magnesium alloys, zinc alloys, etc.

During use, it usually needs to be heated to a higher temperature to play a role. At this time, the volatilized alkali mist will seriously damage human health and pollute the environment.

In addition, the surfactants in the additives are usually high-foaming surfactants, which will generate a lot of foam during use, and the waste water is difficult to treat, so the application is greatly restricted, especially the restriction of environmental protection requirements