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A kind of rosin-type soldering flux water-based cleaning agent and cleaning method

A flux and cleaning agent technology, applied in cleaning methods, detergent compounding agents, chemical instruments and methods, etc., can solve problems such as endangering human health, loss of consciousness, and causing fires, and achieve high safety, bright solder joints, Good surface insulation performance

Active Publication Date: 2021-03-23
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solvent of the cleaning agent contains organic alcohol ethers, among which diethylene glycol monomethyl ether, ethylene glycol monobutyl ether, and propylene glycol ethyl ether are flammable and cause fires, and during the preparation of the cleaning agent, especially ethylene glycol monomethyl ether Butyl ether can depress the central nervous system, high concentration may cause dizziness, nausea and other phenomena, extremely high concentration may cause loss of consciousness or even death
The other two ethers are also toxic and endanger human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] A method for preparing a rosin-type soldering flux water-based cleaning agent. According to the ingredients and content ratios contained in any of the aforementioned water-based cleaning agents, the raw materials of each component are measured respectively, and at normal temperature and pressure, with a stirrer Add deionized water into the reaction kettle and start stirring, then add surfactant, corrosion inhibitor and defoamer respectively, continue stirring until completely mixed, stop stirring and let stand.

[0048] A rosin type soldering flux water-based cleaning agent cleaning process is characterized in that it comprises the steps:

[0049] 1) Soak the parts to be cleaned in water at 80℃±2℃ for 35~50min;

[0050] 2) Put the configured cleaning agent and the parts to be cleaned in the ultrasonic cleaning machine, adjust the initial temperature to 60°C-65°C, and ultrasonically clean for 25~40min. The power of the selected ultrasonic machine is 100~800W according to...

Embodiment example 1

[0054] Rosin-type soldering flux water-based cleaning agent composition is as follows: its weight accounts for 6% of surfactant, wherein Surfyonl104:Tween 20=3:2, 0.01% of corrosion inhibitor is isopropylamine, and 0.01% of defoamer is Polyether modified silicone oil, the balance is deionized water.

Embodiment example 2

[0056] Rosin-type soldering flux water-based cleaning agent composition is as follows: Surfactant accounts for 7% by weight, of which Surfyonl104: fatty alcohol polyoxyethylene ether: alkylphenol polyoxyethylene 9 ether = 3: 1: 1, corrosion inhibitor 0.02% is isopropylamine, 0.02% defoamer is polyether modified silicone oil, and the balance is deionized water.

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PUM

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Abstract

The invention provides a rosin-type flux water-based cleaning agent and a cleaning method, which are made of raw materials with the following mass percentages: surfactant 6% to 12%; corrosion inhibitor 0% to 0.1%; defoaming agent 0% ~0.05%; the balance is deionized water; the surfactant is a compound of Gemini nonionic surfactant and nonionic surfactant, of which Gemini nonionic surfactant accounts for 30% of the total weight %~80%; nonionic surfactant accounts for 20%~70% of the total weight. The cleaning agent of the present invention combined with the cleaning process can powerfully remove surface residues after soldering with rosin-type flux. The solder joints remain bright and have good surface insulation properties. Compared with traditional cleaning agents, the present invention is completely halogen-free, low-volatility, safe and environmentally friendly. , no harmful substances will be produced. The cost is low, the preparation method is simple, and almost no foam is generated during the cleaning process. It is suitable for fully automated cleaning and ultrasonic cleaning, and the cleaning process is easy to operate.

Description

technical field [0001] The invention belongs to the field of cleaning agent manufacturing in the electronic industry, and relates to a water-based cleaning agent for rosin-type soldering flux and a cleaning process method. Background technique [0002] With the development of the electronics industry, the requirements for the quality of electronic products are getting higher and higher. After the welding is completed, flux residues or other foreign pollutants not only affect the appearance of the product, but also deteriorate the reliability of the product, causing short circuits, corrosion, and other electrical failures. [0003] Traditional cleaning agents containing ODS substances such as freon have strong dissolving ability for grease rosin and other resins, high efficiency, good stability, non-corrosive to metal materials, and do not damage the components to be cleaned. Therefore, this type of Cleaning agents were widely used in the cleaning of electronic industrial pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D1/825C11D3/30C11D3/37C11D3/60C11D11/00
CPCC11D1/825C11D3/0073C11D3/30C11D3/3738C11D1/008C11D1/667C11D1/72C11D1/66C11D2111/44C11D2111/46C11D2111/14
Inventor 甘贵生曹华东刘歆夏大权蒋刘杰田谧哲杨栋华徐安莲翟翔
Owner CHONGQING UNIV OF TECH