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Water-based cleaning agent with strong dispersing capacity, and cleaning method thereof

A technology of water-based cleaning agent and dispersing ability, applied in the direction of liquid cleaning method, cleaning method and utensils, detergent compounding agent, etc., can solve problems such as poor cleaning effect, environmental pollution, solder joint corrosion, etc., and achieve good results Cleaning effect, improving economic efficiency, good dispersion effect

Active Publication Date: 2020-04-21
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a water-based cleaning agent with strong dispersibility and a cleaning method thereof, so as to solve the problem of granular pollution of rosin and other lipid compounds in existing cleaning agents. Problems such as poor cleaning effect, easy corrosion with solder joints, high cost and environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A water-based cleaning agent with strong dispersibility is composed of the following components by weight percentage: the total mass of narrow-distributed fatty alcohol polyoxyethylene ether and coconut oil fatty acid diacetamide accounts for 5%, and the narrow-distributed fatty alcohol polyoxyethylene The mass ratio of oxyethylene ether and coconut oil fatty acid diacetamide is 1:1; benzotriazole is 0.01%; polyether and a variety of active additives are refined to make a silicon-free defoamer 0.1%; the balance is Ionized water.

[0023] Use a precision balance to measure the ingredients and content ratios of the water-based cleaning agent, respectively, and put them into the reactor. Under normal temperature and pressure (can be heated to about 35°C as needed), continue to stir until they are completely mixed. Then the stirring is stopped to obtain the water-based cleaning agent.

[0024] The preparation method includes the following steps:

[0025] 1) Place the prepared wa...

Embodiment 2

[0030] A water-based cleaning agent with strong dispersibility is composed of the following components by weight percentage: the total mass of narrow-distributed fatty alcohol polyoxyethylene ether and coconut oil fatty acid diacetamide accounts for 6%, and the narrow-distributed fatty alcohol polyoxyethylene The mass ratio of oxyethylene ether and coconut oil fatty acid diacetamide is 1:2; the mixture of sodium molybdate and benzotriazole is 0.05%; the silicon-free defoaming agent refined from polyether and various active additives is 0.12% ; The balance is deionized water.

[0031] Use a precision balance to measure the ingredients and content ratios of the water-based cleaning agent, respectively, and put them into the reactor. Under normal temperature and pressure (can be heated to about 35°C as needed), continue to stir until they are completely mixed. Then the stirring is stopped to obtain the water-based cleaning agent.

[0032] The preparation method includes the following...

Embodiment 3

[0038] A water-based cleaning agent with strong dispersibility is composed of the following components by weight percentage: the total mass of narrow-distributed fatty alcohol polyoxyethylene ether and coconut oil fatty acid diacetamide accounts for 7.5%, of which narrow-distributed fatty alcohol polyoxyethylene The mass ratio of oxyethylene ether and coconut oil fatty acid diacetamide is 2:3; sodium molybdate is 0.08%; polyether and a variety of active additives are refined to make a non-silicon defoamer 0.15%; the balance is deionized water .

[0039] Use a precision balance to measure the ingredients and content ratios of the water-based cleaning agent, respectively, and put them into the reactor. Under normal temperature and pressure (can be heated to about 35°C as needed), continue to stir until they are completely mixed. Then the stirring is stopped to obtain the water-based cleaning agent.

[0040] The preparation method includes the following steps:

[0041] 1) Place the pr...

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PUM

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Abstract

The invention provides a water-based cleaning agent with strong dispersing capacity, and a cleaning method thereof, wherein the cleaning agent comprises narrow-distribution fatty alcohol-polyoxyethylene ether and a nonionic surfactant. According to the invention, the cleaning agent prepared by the preparation method has strong cleaning capability on granular pollutants wrapped by rosin or other lipid compounds, can effectively remove pollutants in difficult-to-clean positions such as deep holes, blind holes and the like, and is simple and stable in components, free of layering, not prone to volatilization and decomposition, free of corrosion effect on welding spots, is wide, inexpensive and easily-available in raw materials, low in cost, low in waste liquid treatment cost, free of toxic substances such as sulfur, chlorine, benzene, heavy metals and the like, and low in harm to human bodies and the environment; the cleaning process is easy to operate, free of residues, high in cleanliness and bright in welding spot; and the application field is wide, and the application prospect is good.

Description

Technical field [0001] The invention belongs to the technical field of cleaning agents for the electronics industry, and specifically relates to a water-based cleaning agent with strong dispersing ability and a cleaning method thereof. 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, the support of electronic components, and the provider of electrical connections for electronic components. Because it is made by 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 particulate pollutants on the PCB produced, and these pollutants are easy to penetrate into the PCB board. Deep hole. The PCB board usually uses rosin as a flux for soldering. After the rosin removes the oxide film on the solder, the suspended slag generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/825C11D3/28C11D3/04C11D3/60B08B3/08
CPCC11D1/825C11D3/28C11D3/046B08B3/08C11D1/72C11D1/66C11D1/667C11D2111/22
Inventor 甘贵生曹华东刘歆江兆琪梁仕发许惠斌吴懿平
Owner CHONGQING UNIV OF TECH
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