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Environmental-friendly water-based detergent for soldering tin residue and preparation and use method of environmental-friendly water-based detergent

A water-based cleaning agent, solder residue technology, applied in chemical instruments and methods, surface-active non-soap compounds and cleaning compositions, detergent compositions, etc. Influence and other problems, to achieve the effect of low comprehensive cleaning cost, high economic benefit, and improved penetration and decontamination performance

Pending Publication Date: 2017-11-03
中山翰华锡业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the water-based cleaning agent in the prior art has an unsatisfactory cleaning effect on lead-free solder, because the flux of lead-free solder contains a large amount of rosin and organic acid activators and organic compounds such as aniline hydrochloride and hydrazine hydrochloride. After cleaning with a water-based cleaning agent, it is easy to retain white residues whose main components are turpentine, activators, and organic compounds, and these residues will have adverse effects on subsequent processes
For example, rosin will affect the bonding of wires and hinder signal transmission; while activators will reduce the resistance value, organic compounds such as aniline hydrochloride and hydrazine hydrochloride will cause line corrosion and electrochemical migration, and the solder joints cannot maintain brightness from the appearance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of an environmentally friendly water-based cleaning agent for solder residues, comprising the following steps:

[0025] (1) Add 90 parts of deionized water to the reaction kettle, and add 1 part of sodium citrate and 1 part of N,N-dimethylethanolamine, 1 part of tetrasodium ethylenediaminetetraacetic acid, 2 parts of sodium borate and 5 parts of zinc stearate were mixed and stirred at a speed of 200r / min for 15 minutes until completely dissolved;

[0026] (2) Add 10 parts of tetrahydrofuran methanol, 5 parts of ethylene glycol monoethyl ether, 4 parts of C13-15 alcohol polyoxypropylene polyoxyethylene ether, and 3 parts of lauryl alcohol polyoxyethylene ether sulfonate to the solution prepared in step (1). disodium succinate and 1 part of triethanolamine oleate, under stirring at 1000r / min, mix the various ingredients;

[0027] (3) Heat to 40°C while stirring at a heating rate of 5°C / min, continue to add 2 parts of glyceryl monostearate and 3 parts...

Embodiment 2

[0031] A preparation method of an environmentally friendly water-based cleaning agent for solder residues, comprising the following steps:

[0032] (1) Add 130 parts of deionized water to the reaction kettle, and at 30°C, add 5 parts of sodium citrate and 13 parts of sodium carbonate, 5 parts of tetrasodium edetate, 4 parts of sodium borate and 8 parts of sodium borate while stirring. 1 part of zinc stearate, mixed and stirred at a speed of 300r / min for 20min until fully dissolved;

[0033] (2) Add 20 parts of tetrahydrofuran methanol, 15 parts of ethylene glycol monoethyl ether, 10 parts of C13-15 alcohol polyoxypropylene polyoxyethylene ether, and 5 parts of lauryl alcohol polyoxyethylene ether sulfonate to the solution prepared in step (1). disodium succinate and 5 parts of triethanolamine oleate, under stirring at 1400r / min, the various components were mixed;

[0034] (3) Heat to 50°C while stirring at a heating rate of 7°C / min, continue to add 4 parts of glyceryl monoste...

Embodiment 3

[0038] A preparation method of an environmentally friendly water-based cleaning agent for solder residues, comprising the following steps:

[0039] (1) Add 105 parts of deionized water to the reaction kettle, and at 27°C, add 3 parts of sodium citrate, 7 parts of monoethanolamine, 3 parts of tetrasodium edetate, 3 parts of sodium borate and 6.5 1 part of zinc stearate, mixed and stirred at a speed of 250r / min for 17min until fully dissolved;

[0040] (2) Add 15 parts of tetrahydrofuran methanol, 10 parts of ethylene glycol monoethyl ether, 7 parts of C13-15 alcohol polyoxypropylene polyoxyethylene ether, and 4 parts of lauryl alcohol polyoxyethylene ether sulfonate to the solution prepared in step (1). disodium hydroxysuccinate and 3 parts of triethanolamine oleate, under stirring at 1200r / min, mix the various ingredients;

[0041] (3) Heat to 45°C while stirring at a heating rate of 6°C / min, continue to add 3 parts of glyceryl monostearate and 4 parts of carboxymethyl chitosan...

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PUM

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Abstract

The invention provides an environmental-friendly water-based detergent for soldering tin residues and a preparation and use method of the environmental-friendly water-based detergent, and relates to the field of water-based detergent preparation. The environmental-friendly water-based detergent is prepared from the following raw materials in parts by weight: 10-20 parts of tetrahydrofuran, 5-15 parts of ethylene glycol monoethyl ether, 7-15 parts of a surfactant, 1-13 parts of a saponifying agent, 1-5 parts of ethylene diamine tetraacetic acid tetrasodium, 2-4 parts of sodium borate, 1-5 parts of oleic acid triethanolamine, 1-5 parts of sodium citrate, 2-4 parts of glycerin monostearate, 5-8 parts of zinc stearate, 0.1-0.5 part of a defoaming agent, 0.5-2.5 parts of a corrosion inhibitor, 3-5 parts of carboxymethyl chitosan and 90-130 parts of deionized water. The environmental-friendly water-based detergent for soldering tin residues, which is provided by the invention, is capable of forcefully cleaning residues at soldering points of products after tin soldering, the soldering points are kept bright after cleaning, and cleaned parts are free of residue substance or whiting.

Description

field of invention [0001] The invention belongs to the field of water-based cleaning agent manufacturing, and in particular relates to an environment-friendly water-based cleaning agent for solder residues and a preparation and use method thereof. Background technique [0002] Cleaning agents are widely used in industrial production, and are often used for surface degreasing, descaling before and after processing, and cleaning processes before assembly or packaging of finished products. In the electronics industry, cleaning agents must also be used to remove harmful residues after soldering printed circuit boards. Especially the solder residue formed after soldering, if not cleaned, will affect the long-term reliability of the circuit, and even affect the performance of the circuit. [0003] At present, the commonly used cleaning agents are divided into solvent-based, semi-solvent-based and water-based. Among solvent-based cleaning agents, petroleum solvents are flammable,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D10/04
CPCC11D1/008C11D1/28C11D1/66C11D1/662C11D1/667C11D1/721C11D10/042C11D10/045
Inventor 龙斌马鑫万国晖周建林展羽童桂辉张春慧李幼成
Owner 中山翰华锡业有限公司
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