PCB developing dry film/printing ink groove cleaning agent and use method thereof

Abstract

The invention relates to a PCB developing dry film / ink groove cleaning agent, and a preparation method and a use method thereof. The invention relates to the field of fine chemical engineering, and aims to provide the PCB development dry film / ink tank cleaning agent, which comprises the following substances by mass: 5-12% of phosphoric acid (analytically pure), and 1, 8-15% of an acetic acid and linear alkyl benzene sulfonic acid mixture 1 with a mass ratio of 1: 1-1.5, 1-5% of a mixture 2 of ethylene glycol and ethylene glycol ethyl ether in a mass ratio of 1: 1; 1-5% of a mixture 3 of a polytrifluoropropyl methyl siloxane and a fatty alcohol polyoxyalkyl ether mixture with the mass ratio being 1: 3, 0.5-3% of EDTA,; 1-5% of OP-10, and the balance of water. The cleaning agent has the beneficial effects that the acid environment provided by the organic acid and the inorganic acid well acts on the metal precipitate, the chelating ability of active groups in the organic acid is good, a surface active agent can well change the wettability of the dry film adherend on the tank wall, and the surface tension of a system solution is changed.

Description

technical field [0001] The invention relates to the field of fine chemicals, in particular to a PCB developing dry film / ink cleaning agent and a preparation method and use method thereof. Background technique [0002] Printed circuit board, also known as printed circuit board (PCB), is the provider of electrical connections for electronic components and the basic component of electronic products. Its quality directly determines the performance of the entire circuit. Development is a very important process in the PCB production process. As the developing tank is used for a long time, dry film or wet film residues are easy to accumulate on the roller and the tank wall. In subsequent production, it will stick to the board surface It will cause PAD pollution, further cause open circuit or connection, and cause adverse effects on post-processes such as gold and tin. Therefore, regular cleaning and maintenance of the tank is required. Since there are stubborn high molecular polym...

AI Technical Summary

Problems solved by technology

The use of double-dosage tank cleaning agent increases the operation process, the process is cumbersome and inconvenient, and needs to be dissolved on site, which has certain risks and low efficiency. It usually takes 8-10 hours, and the developing tank that is not cleaned in place is likely to cause poor development and reduce equipment. life