Slot cleaning agent for anti-welding developing of circuit boards

Abstract

The invention discloses a slot cleaning agent for anti-welding developing of circuit boards. The slot cleaning agent comprises the following raw materials by weight percent: 9-11% of sodium hydroxideand / or potassium hydroxide, 2-4% of one or more of ethanol amine, diethanol amine and triethanolamine, 1.5-2.5% of trisodium phosphate and / or sodium tripolyphosphate and the balance of water. A preparation method thereof comprises the following steps: adding all the components into water and then mixing till the mixture is uniform, thereby acquiring the slot cleaning agent. Few chemical substancesare used in the formula of the slot cleaning agent provided by the invention and the cost is low; the cleaning effect is excellent; the slot cleaning agent is capable of cleaning metallic sludge scabby substances attached to slot walls, pipelines, nozzles, and the like; the slot cleaning agent has slight smell and meets the requirement for green and environmental protection.

Description

technical field [0001] The invention relates to the field of cleaning agents for circuit boards, in particular to a cleaning agent for circuit board solder resist and development. Background technique [0002] Circuit boards are very important components in electronic products. Today, with the rapid development of electronic products, the demand for circuit boards is huge. During the mid-production process of circuit boards, solder mask work is required, including the development step. The existing technology mainly uses sodium carbonate developing solution. Since the tank solution contains a large amount of carbonate, solid precipitation will occur when combined with calcium and magnesium ions in the water. This white precipitation not only adheres to the tank wall, but also blocks the pipeline and nozzles. It is difficult to accumulate over time. If it is completely removed, it is easy to cause problems such as poor development / etching, etc. In severe cases, it will reduc...

AI Technical Summary

Problems solved by technology

However, the current cleaning agents for etching tanks often have unsatisfactory cleaning effects, and cannot completely remove metal scabs on the tank wall, in the pipeline, or in the nozzles, etc., and the chlorine smell is strong, which is not environmentally friendly.