Environment-friendly developing tank dirt scavenging agent as well as preparation method and application method thereof

Abstract

The invention discloses an environment-friendly developing tank dirt scavenging agent as well as a preparation method and an application method thereof. The environment-friendly developing tank dirt scavenging agent is prepared from the following raw materials: acid liquid, a solubilizing agent, a surfactant and de-ionized water, wherein the acid liquid is obtained by mixing one or more of components including sulfuric acid, hydrochloric acid, nitric acid, acetic acid, glycollic acid, citric acid and the like according to the equal mass ratio; the solubilizing agent is obtained by mixing one or more of components including ethanol, propylene glycol, isopropanol, butanediol, isobutanol, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether and the like; and the surfactant is glycerin fatty acid ester. The preparation method of the environment-friendly developing tank dirt scavenging agent comprises the following steps: adding water; adding a sulfuric acid solution into a stirring tank added with the de-ionized water; adding the hydrochloric acid into the stirring tank; adding the glycollic acid; adding the ethanol, the ethylene glycol monobutyl ether and the diethyleneglycol monobutyl ether; adding the surfactant; and finally, adding the de-ionized water to make the volume constant, and sufficiently stirring.

Description

technical field [0001] The invention relates to a dirt cleaning agent for a developing tank in a printed circuit board manufacturing process, in particular to an environment-friendly dirt removing agent for a developing tank, a preparation method and a use method thereof. Background technique [0002] During the manufacturing process of the circuit board, the transfer of the pattern is realized through the processes of exposure-development-removal-etching-removal of the dry film on the surface of the material, and a special circuit pattern is obtained on the surface of the material. [0003] PCB dry film developer is usually 1-3% sodium carbonate solution. The sodium carbonate solution reacts with the dry film and peels off the unwanted part of the dry film. During this process, a large amount of dry film residue is dissolved in the solution. Industrial sodium carbonate contains a small amount of impurities. After a long period of accumulation in the production workshop, re...

AI Technical Summary

Problems solved by technology

Industrial sodium carbonate contains a small amount of impurities. After a long period of accumulation in the production workshop, residual film residue and other impurities are easy to scale in the developing equipment, which is not conducive to production. Therefore, the equipment needs to be cleaned

[0004] At present, the cleaning agent of the developing tank mainly uses a large amount of polar organic solution to soak the equipment. Although the organic solvent can effectively clean all kinds of dirt in the equipment, but because the organic solvent itself is volatile, has a strong smell, is easy to catch fire, and is highly toxic , transportation is unsafe, waste water COD is extremely high, etc., which are restricted in use

In addition, organic solvents are easy to corrode the rollers, tank body, pipes, etc. of the developing tank, which also limits its application.