A weakly alkaline composite multifunctional water-based cleaning agent and cleaning method

Abstract

The invention provides a weakly alkaline composite multifunctional water-based cleaning agent and a cleaning method, which are made of raw materials with the following mass ratios: surfactant 6% to 12%; corrosion inhibitor 0% to 0.1%; defoaming agent : 0%~0.05%; the balance is deionized water; the surfactant is a combination of nonionic surfactant, water-based anionic surfactant, Gemini nonionic surfactant and zwitterionic surfactant Including nonionic surfactants and Gemini nonionic surfactants each account for 25% to 35% of the total weight; zwitterionic surfactants account for 10% to 25% of the total weight; water-based anionic surfactants account for the total 20%~30% of weight. The cleaning agent of the present invention combined with the cleaning process can powerfully remove surface residues after soldering with rosin-type flux, keeping the solder joints bright and having good surface insulation properties; the present invention has low volatility, low content of active ingredients, relatively low cost, and the preparation method Simple, almost no foam is generated during the cleaning process, and the cleaning process is easy to operate.

Description

technical field [0001] The invention belongs to the field of cleaning agent manufacturing in the electronics industry, and relates to a weakly alkaline composite multifunctional water-based cleaning agent and a cleaning process, which is especially suitable for post-welding cleaning of various components or PCB board surfaces. Background technique [0002] With the development of the electronics industry, the requirements for the quality of electronic products are getting higher and higher. After the welding is completed, flux residues or other foreign pollutants not only affect the appearance of the product, but also deteriorate the reliability of the product, causing short circuits, corrosion, and other electrical failures. [0003] Traditional cleaning agents containing ODS substances such as freon have a good cleaning effect on grease rosin and other resins. However, such cleaning agents contain substances that destroy the ozone layer. Improper use of halogens and their...

AI Technical Summary

Problems solved by technology

Although they can basically meet the cleaning requirements, on the one hand, most cleaning agents are highly dependent on the type of solder and flux, the cleaning range is limited, the stability is poor, volatile and harmful to human health

On the other hand, the preparation methods of most cleaning agents are cumbersome, and some need to introduce other auxiliary equipment, and the composition of cleaning agents is complex, which will cause corrosion to solder joints, and a large number of bubbles will be generated during the cleaning process, which cannot be used for fully automatic cleaning and cleaning. ultrasonic cleaning