Circuit board eluant and preparation method thereof

Abstract

The invention discloses a circuit board eluant and a preparation method thereof. The eluant comprises alkali, a swelling agent system and water, wherein the swelling agent system consists of methyl alcohol, acetone, methylene dichloride and water. The preparation method comprises the steps of material preparation, preparation of the swelling agent system and preparation of the eluant. According tothe circuit board eluant provided by the invention, the eluant can effectively clean unqualified circuit board soldermask layers and soldermask layers on waste circuit boards in the production process, the eluant is beneficial for reprocessing in the production of circuit boards and recycling of the waste circuit board products, the eluant has high washing speed and good washing effect, and the washing time is improved by 25% compared with an ordinary eluant; the eluant can be used repeatedly, is safe for human bodies and the environment, and has the characteristic of low cost; and the preparation method of the circuit board eluant provided by the invention is simple in operation, few in required equipment, wide in source of raw materials, easy to prepare and low in production cost, and is applicable for industrial large-scale production.

Description

technical field [0001] The invention belongs to the technical field of cleaning solution, and in particular relates to a cleaning solution for circuit boards and a preparation method thereof. Background technique [0002] In recent years, the electronics industry has developed rapidly, and all kinds of electronic products are becoming more and more popular. Electronic products, large and small, all involve circuit boards. Electronic circuit boards are the core components of electronic products. If these devices are eliminated and discarded, then these waste The circuit boards will inevitably cause serious pollution to our environment. At present, my country has entered the peak period of household appliance elimination and scrapping. If it is not properly handled and disposed of, it will not only cause a large loss of useful resources, but also cause serious harm to the environment and human health. . Waste circuit board recycling becomes the guardian of the environment. Scr...

AI Technical Summary

Problems solved by technology

And prior art just adopts alkaline solution to clean the solder mask of circuit board, but this kind of alkaline solution can't effectively clean the solder mask of circuit board, therefore, be badly in need of developing a kind of cleaning effect good, little to environmental pollution, time-saving and labor-saving Circuit board solder mask stripping solution