PCB (printed circuit board) ultrasonic hydrocarbon cleaner and application method thereof

Abstract

The invention provides a PCB (printed circuit board) ultrasonic hydrocarbon cleaner and an application method thereof, wherein the PCB ultrasonic hydrocarbon cleaner includes, by weight, 50-70% of a hydrocarbon compound, 8-20% of an alcohol ether compound, 1-10% of an alcohol compound, 10-25% of an ester ether compound, and 8-15% of acetyl acetone. The hydrocarbon compound can remove nonpolar dirton a PB; the alcohol ether compound and the ester ether compound can dissolve in each other and help improve dissolubility of acetyl acetone in the hydrocarbon compound, so that polar dirt can be well removed; the alcohol compound can reduce the viscosity of the cleaner herein, so that ultrasonic washing is more sufficient and thorough; acetyl acetone can well soften, dissolve and disperse oil, can well dissolve rosin pollutants, and can chelate metal oxide pollutants on the PCB; the combination of acetyl acetone with the hydrocarbon compound, the alcohol ether compound, the alcohol compoundand the ester ether compound allows various pollutants on the surface of the PCB and in deep holes and blind holes to be ultrasonically cleaned.

Description

technical field [0001] The invention relates to a cleaning agent, in particular to an ultrasonic hydrocarbon cleaning agent for PCB boards and its application method. Background technique [0002] PCB (Printed Circuit Board), the Chinese name is printed circuit board, also known as printed circuit board, printed circuit board, is an important electronic component, a support for electronic components, and a provider of electrical connections for electronic components. Because it is made using electronic printing, it is called a "printed" circuit board. Due to its printing process, there are usually more non-polar pollutants, polar pollutants, metal oxides and pollutants in the form of particles on the prepared PCB, and these pollutants are easy to penetrate into the PCB board. deep hole. In the preparation of PCB boards, rosin is usually used as flux for soldering. After rosin removes the oxide film on the solder, the suspended slag generated by it will float on the surface...

AI Technical Summary

Problems solved by technology

[0003] Due to the complexity of the PCB board preparation process, there are many complicated pollutants on the PCB board. At present, water-based cleaning agents are used for cleaning. Although it has obvious decontamination effect on PCB boards, the use of water-based cleaning agents will inevitably cause serious discharge of wastewater, which does not meet the current development trend of energy conservation and emission reduction; the second is oil-based cleaning agents. It is usually a hydrocarbon cleaning agent, generally including hydrocarbons, alcohol compounds, ester compounds and ether compounds. Although this hydrocarbon cleaning agent can remove non-polar pollutants and polar pollutants on the surface of the workpiece, it is Some pollutants existing in deep holes and blind holes of the workpiece are difficult to remove, and it is also difficult to deal with granular pollutants

In order to improve the scavenging ability, halogenated hydrocarbons are currently added to oil-based cleaning agents. The addition of halogenated hydrocarbons will bring a lot of odor to the cleaning agent, and halogenated hydrocarbons are highly toxic and non-environmentally friendly substances. It also does not meet the call of green environmental protection advocated by social development

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