Emulsion type cleaning agent for printed circuit board and preparation method for emulsion type cleaning agent

Abstract

The invention discloses an emulsion type cleaning agent for a printed circuit board. The emulsion type cleaning agent is prepared from the following raw materials in parts by weight: 20 to 24 parts of butyl acetate, 30 to 34 parts of ethanol, 10 to 12 parts of n-octane, 9 to 10 parts of propylene glycol butyl ether, 4 to 5 parts of dodecyl dimethyl benzyl chloride, 4 to 5 parts of sodium fatty alcohol polyoxyethylene ether sulphate, 2 to 3 parts of citric acid, 1 to 2 parts of sodium xylene sulfonate, 3 to 7 parts of cyclohexanone, 2 to 3 parts of methyl pyrrolidone, 4 to 5 parts of auxiliaries and 100 to 120 parts of de-ionized water. According to the cleaning agent, a plurality of surfactants such as an anionic surfactant, a nonionic surfactant and a cationic surfactant are used, so that an organic solvent and water form emulsion, and the cleaning agent has high dissolution capability for rosin, welding compounds and organic compounds, is high in cleaning speed, low in cost, harmless to an ozone layer and low in toxicity and human skin irritation, and has a pH value of 7 to 8; the auxiliaries can form a protective film on the surface of the printed circuit board to isolate air and prevent corrosion, oxidation and short-circuit, so that convenience is brought to the next manufacturing process.

Description

technical field [0001] The invention relates to the field of cleaning agents, in particular to a water-emulsion type printed circuit board cleaning agent and a preparation method thereof. Background technique [0002] With the rapid development of integrated circuits, the volume of circuit boards is getting smaller and smaller, and electronic components are getting smaller and denser. If the dirt and dust inside are not cleaned during the production process, it may cause problems such as short circuit and corrosion, which will affect the normal operation of the circuit board. At present, most circuit board cleaners are made of organic substances, which have good cleaning effect and are not easy to cause problems such as short circuit and corrosion. However, organic compounds are not only expensive, but also pollute the environment, destroy the ozone layer, and are harmful to human health. There are also a few water-based cleaning agents, but the cleaning effect is limited a...

AI Technical Summary

Problems solved by technology

If the dirt and dust inside are not cleaned during the production process, it may cause problems such as short circuit and corrosion, which will affect the normal operation of the circuit board

At present, most circuit board cleaners are made of organic substances, which have good cleaning effect and are not easy to cause problems such as short circuit and corrosion. However, organic compounds are not only costly, but also pollute the environment, destroy the ozone layer, and are harmful to human health.

There are also a few water-based cleaning agents, but the cleaning effect is limited, and there are safety risks. Further improvement of the formula and process is required to achieve the goals of thorough cleaning, no pollution, little corrosion, health, circuit safety, and cost reduction