Water-based circuit board cleaning agent and preparation method thereof

A circuit board cleaning agent, water-based technology, applied in the field of washing, can solve problems such as difficulty in controlling costs, potential safety hazards, loss of effect, etc., and achieve the effects of convenient and simple use, long cleaning cycle, and large chelation effect.

Inactive Publication Date: 2014-01-08
SHANGHAI LIMEI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Flammable solvents have potential safety hazards, and long-distance transportation is even more unsafe, prone to explosion hazards;
[0006] 2. The product has poor stability, is prone to acidification and loses its effect;
[0007] 3. The product

Method used

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  • Water-based circuit board cleaning agent and preparation method thereof
  • Water-based circuit board cleaning agent and preparation method thereof
  • Water-based circuit board cleaning agent and preparation method thereof

Examples

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preparation example Construction

[0044] A preparation method of an aqueous circuit board cleaning agent, in parts by weight, the preparation method comprises the steps of:

[0045] (1) Mix 1-1.5 parts of chelating agent with 30-45 parts of deionized water, heat to 40°C-45°C, and stir for 6-12 minutes;

[0046] (2), cooling to 28 ℃ ~ 31 ℃;

[0047] (3) Add 3 to 8 parts of fatty alcohol polyoxyethylene ether, control the addition speed of fatty alcohol polyoxyethylene ether to 0.05 parts / min, and keep stirring;

[0048] (4) Add 3-7 parts of co-solvent, and then add 25-35 parts of 3-methoxy-3-methyl-1-butanol;

[0049] (5), continue to add 15 to 20 parts of diethylene glycol butyl ether, and then add 2 to 3 parts of co-solvent;

[0050] (6) Add 2 to 5 parts of isopropanol, continue stirring for 1 hour, and let stand for 10 to 15 minutes to obtain a transparent solution.

[0051] The pH value of the transparent solution obtained in the above step (6) is pH 7-7.5. Keep the pH of the product neutral, mild in na...

Embodiment 1

[0054] This preparation method comprises the steps:

[0055] (1) Take 1kg of sodium gluconate as a chelating agent, mix it with 45kg of deionized water, heat to 40°C, and stir for 6 minutes;

[0056] (2) Cool to 29°C;

[0057] (3) Add 3kg fatty alcohol polyoxyethylene ether, control the addition speed of fatty alcohol polyoxyethylene ether to 50g / min, and keep stirring;

[0058] (4) Add 3kg of triethanolamine as co-solvent, then add 25kg of 3-methoxy-3-methyl-1-butanol;

[0059] (5), continue to add 19kg of diethylene glycol butyl ether, and then add 2kg of co-solvent triethanolamine;

[0060] (6) Add 2kg of isopropanol, continue stirring for 1 hour, and let stand for 10 minutes to obtain a transparent solution.

[0061] Test the pH value of the transparent solution obtained in the above step (6), and adjust its final pH value to pH 7.0. Moreover, in step (3) to step (6), the reaction temperature is always controlled at 28° C. to 30° C., and the whole process is carried ou...

Embodiment 2

[0063] This preparation method comprises the steps:

[0064] (1) Take 1.5kg of ethylenediaminetetraacetic acid as a chelating agent, then mix it with 30kg of deionized water, heat to 45°C, and stir for 12 minutes;

[0065] (2) Cool to 31°C;

[0066] (3) Add 8kg fatty alcohol polyoxyethylene ether, control the addition speed of fatty alcohol polyoxyethylene ether to 50g / min, and keep stirring;

[0067] (4) Add 7kg of acetamide as co-solvent, then add 30.5kg of 3-methoxy-3-methyl-1-butanol;

[0068] (5), continue to add 15kg of diethylene glycol butyl ether, and then add 3kg of co-solvent acetamide;

[0069] (6) Add 5kg of isopropanol, continue stirring for 1 hour, and let stand for 15 minutes to obtain a transparent solution.

[0070] Test the pH value of the transparent solution obtained in the above step (6), and adjust its final pH value to pH 7.5. Moreover, in step (3) to step (6), the reaction temperature is always controlled at 30° C. to 31° C., and the whole process is...

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Abstract

The invention discloses a water-based circuit board cleaning agent and a preparation method thereof. The water-based circuit board cleaning agent comprises the following components in parts by weight: 25-35 parts of 3-methoxy-3-methyl-1-butanol, 15-20 parts of butyl carbitol, 3-8 parts of fatty alcohol-polyoxyethylene ether, 1-1.5 parts of chelating agent, 5-10 parts of cosolvent, 2-5 parts of isopropanol and 30-45 parts of deionized water. The preparation method of the water-based circuit board cleaning agent comprises the following steps: firstly, mixing the chelating agent with the deionized water, heating to 40-45 DEG C and stirring for 6-12 minutes; secondly, controlling the temperature within the range from 28 DEG C to 31 DEG C, adding the fatty alcohol-polyoxyethylene ether, the cosolvent, the 3-methoxy-3-methyl-1-butanol, the butyl carbitol and the isopropanol, continuously stirring for 1 hour and then standing for 10-15 minutes to obtain the water-based circuit board cleaning agent. The preparation method of the water-based circuit board cleaning agent disclosed by the invention has the beneficial effects of simple steps and stable process, and prepared product is environment-friendly and harmless, high in cost performance and high in cleaning ability.

Description

technical field [0001] The invention belongs to the technical field of washing, and in particular relates to an aqueous circuit board cleaning agent and a preparation method thereof. Background technique [0002] Printed circuit board, also known as PCB board, is the provider of electrical connection for electronic components. After the PCB board is finished, there are often solder paste, rosin, paraffin and other kinds of dirt remaining. Solder paste and rosin itself will not cause a short circuit on the PCB board, but because low-quality solder paste and rosin are often bought in the market today, they contain more water, and the water remains on the surface of the circuit board after use, which is easy to cause a short circuit; After the paste and rosin are used, some solid or powder residues will remain on the circuit board. These residues will not cause a short circuit under normal conditions, but when the circuit board is tested for withstand voltage, the high voltage...

Claims

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Application Information

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IPC IPC(8): C11D7/60C11D7/26C11D7/32C11D7/50
Inventor 陈贤平
Owner SHANGHAI LIMEI CHEM CO LTD
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