阅读说明：本技术 一种环保型水基清洗剂及其制备方法 (Environment-friendly water-based cleaning agent and preparation method thereof ) 是由 李春方 宋波 于 2019-10-08 设计创作，主要内容包括：本发明公开了一种环保型水基清洗剂,属于电子工业清洗剂技术领域,其技术方案要点是,包括按重量份计的如下组分,三乙醇胺油酸皂10-15份、季戊四醇1-5份、表面活性剂1-5份、碱剂5-10份、助洗剂1-3份、消泡剂0.1-0.5份、缓蚀剂0.1-0.5份、水40-60份,本发明的环保型水基清洗剂不含ODS类物质,绿色环保,且具有清洗效果佳、低残留的优势,适用于电子工业清洗去除油剂、机械油、切削油、助焊剂残留等。此外,本发明还公开了一种环保型水基清洗剂的制备方法,其具有工艺步骤简单的特点,制得的环保型水及纳米清洗剂绿色环保、清洗去污效果极佳。(The invention discloses an environment-friendly water-based cleaning agent, which belongs to the technical field of cleaning agents in the electronic industry and has the technical scheme that the environment-friendly water-based cleaning agent comprises the following components, by weight, 10-15 parts of triethanolamine oleate soap, 1-5 parts of pentaerythritol, 1-5 parts of surfactants, 5-10 parts of alkaline agents, 1-3 parts of builders, 0.1-0.5 part of defoaming agents, 0.1-0.5 part of corrosion inhibitors and 40-60 parts of water. In addition, the invention also discloses a preparation method of the environment-friendly water-based cleaning agent, which has the characteristic of simple process steps, and the prepared environment-friendly water and nano cleaning agent are environment-friendly and have excellent cleaning and decontamination effects.)

1. An environment-friendly water-based cleaning agent is characterized in that: comprises the following components in parts by weight,

10-15 parts of triethanolamine oleate soap

1-5 parts of pentaerythritol

1-5 parts of surfactant

5-10 parts of alkaline agent

1-3 parts of builder

0.1 to 0.5 portion of defoaming agent

0.1-0.5 part of corrosion inhibitor

40-60 parts of water.

2. The environment-friendly water-based cleaning agent as claimed in claim 1, wherein: the surfactant is alkali-resistant penetrant OEP or alkali-resistant penetrant AEP.

3. The environment-friendly water-based cleaning agent as claimed in claim 1, wherein: the alkaline agent is selected from one or more of sodium hydroxide, potassium hydroxide, sodium carbonate and sodium bicarbonate.

4. The environment-friendly water-based cleaning agent as claimed in claim 1, wherein: the defoaming agent is a polyether organic silicon defoaming agent.

5. The environment-friendly water-based cleaning agent as claimed in claim 1, wherein: the corrosion inhibitor is imidazole, thiazole or a mixture of the imidazole and the thiazole.

6. The environment-friendly water-based cleaning agent as claimed in claim 1, wherein: the builder is one or more of C4-C8 alcohol.

7. The environment-friendly water-based cleaning agent as claimed in claim 1, wherein: also comprises 1-5 parts of carbonate of the alcohol amine compound.

8. The environment-friendly water-based cleaning agent as claimed in claim 1, wherein: the alcohol amine compound is one or more of the substances shown in the chemical formula 1,

chemical formula 1

Wherein X is a hydrogen atom or a hydroxyl group, and n and m are both integers of 4 to 6.

9. The preparation method of the environment-friendly water-based cleaning agent as claimed in claim 1, characterized in that: comprises the following steps

P1, weighing raw materials containing triethanolamine oleic soap, pentaerythritol, a surfactant, an alkaline agent, a builder, a defoaming agent, a corrosion inhibitor and water according to the weight part ratio;

p2, adding the weighed water into the mixing equipment, then adding the weighed triethanolamine oleate soap, pentaerythritol and surfactant, and stirring and mixing uniformly;

p3, adding an alkaline agent, a builder, a defoaming agent and a corrosion inhibitor, and continuously stirring and uniformly mixing.

10. The preparation method of the environment-friendly water-based cleaning agent as claimed in claim 9, wherein the preparation method comprises the following steps: the P2 step and the P3 step are both stirred and mixed at the rotating speed of 300-800 rpm.

Technical Field

The invention relates to the technical field of cleaning agents in the electronic industry, in particular to an environment-friendly water-based cleaning agent and a preparation method thereof.

Background

In the electronic manufacturing process, in order to ensure the reliability of soldering, a flux with high activity must be used. The flux remains on the assembled circuit board, will corrode circuit board and components, and reduce its surface insulation resistance, especially under high temperature and high humidity environment, will appear serious corrosion and electric leakage, influence the reliability of the complete machine. The residues on the assembled circuit board are mainly residues of electronic welding auxiliary materials such as soldering paste, soldering flux and the like, and pollutants such as hand sweat, fingerprints, fibers falling in the air and dust contaminated in the operation process, and the substances have complex components and contain various water-insoluble components such as resin, an active agent, a thixotropic agent, a thickening agent and the like, and also contain anions, cations and weak organic acids. Therefore, in order to ensure the smooth progress of the electronic manufacturing process and the quality and reliability of the manufactured products, it is necessary to introduce a cleaning process and use a cleaning agent in many steps of the process implementation.

The conventional cleaning agent generally contains ODS (Ozone Depleting Substances) Substances, such as a fluorine-containing cleaning agent disclosed in chinese patent with application publication No. CN104164318A, and the formula of the cleaning agent contains fluorine-containing organic Substances such as fluorocarbon solvent and hydrofluoroether; the metal cleaner disclosed in chinese patent application publication No. CN1051177615A contains chlorofluorocarbons such as 1-fluoro-1, 1-dichloroethane. The cleaning agent has the advantages of good chemical stability, low toxicity, no combustion, low surface tension, no damage to the cleaned material, strong permeability, quick drying property and the like. However, the ozone generating agent contains ODS substances with strong destructive power to the ozone layer and serious greenhouse effect, such as halogenated solvents, seriously harms the ecological environment of human beings and also has influence on the health of human bodies.

Therefore, it is necessary to develop an environmentally friendly cleaning agent for the flux of the integrated circuit. The Chinese patent with the publication number of CN102851151B discloses an environment-friendly cleaning agent for the electronic industry, which comprises 2-methyl pentane, absolute ethyl alcohol, isopropanol and an ether solvent, wherein methyl pentane is adopted to replace n-hexane, so that the toxicity of the cleaning agent to a human body is reduced, the cleaning agent has good dissolubility for rosin in a soldering flux, the ether solvent has good dissolubility for organic acid in the soldering flux, and the sewage ethanol has good effect of removing oil stains. However, the formula of the cleaning agent does not contain water, and is easy to cause pollution and residue on cleaning devices and cause secondary pollution.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an environment-friendly water-based cleaning agent which has the advantages of no ODS (ozone depleting substance) substances, good cleaning effect, environmental protection and low residue.

In order to achieve the purpose, the invention provides the following technical scheme:

an environment-friendly water-based cleaning agent comprises the following components in parts by weight,

triethanolamine oleate soap and pentaerythritol are selected as main cleaning agent components, and an alkaline agent and a surfactant are matched to obtain an excellent cleaning effect, so that the cleaning agent has an excellent removing effect on conventional oil, machine oil, cutting oil, residual soldering paste, residual soldering flux and the like. On one hand, the components can be fully dissolved in water to form a water-based cleaning agent by doping the surfactant, so that the residue of the cleaning agent after cleaning is greatly reduced. On the other hand, the surfactant can promote the wettability of the cleaning agent to the material, and the cleaning efficiency is improved. Builders have the effect of further enhancing wetting and accelerating detergency. The corrosion inhibitor can form a protective layer on the surface of a cleaning workpiece to slow down the corrosion to the metal workpiece. In addition, the cleaning agent disclosed by the invention is free of ODS substances, and is more environment-friendly.

Further, the surfactant is an alkali-resistant penetrant OEP or an alkali-resistant penetrant AEP.

By adopting the technical scheme, the alkali-resistant penetrant OEP and the alkali-resistant penetrant AEP have good cleaning effect and good stability, and can be used under the conditions of higher temperature and pH.

Further, the alkaline agent is selected from one or more of sodium hydroxide, potassium hydroxide, sodium carbonate and sodium bicarbonate.

By adopting the technical scheme, the alkaline agent can improve the removal effect on oily substances, and meanwhile, the alkaline agent is dissolved in water to form sodium ions which have excellent hydrophilicity, can absorb water through the sodium ions to play a role in swelling, has the effects of accelerating the separation of stains such as flux residue and the like from the surface layer of the substrate, and improves the cleaning efficiency.

Further, the defoaming agent is a polyether silicone defoaming agent.

By adopting the technical scheme, the polyether organic silicon defoaming agent has the strong foam inhibition capability of the polyether defoaming agent and the capability of the organic silicon defoaming agent for quickly breaking foam, and has excellent defoaming property, foam inhibition property and dispersibility in a water-based system.

Further, the corrosion inhibitor is imidazole, thiazole or a mixture of the two.

Further, the builder is one or more of C4-C8 alcohol.

By adopting the technical scheme, the C4-C8 alcohol contains alkyl connecting segments and terminal hydroxyl in molecules, so that the affinity of the alcohol to oily substances and water-based substances is realized, and the C4-C8 alcohol is selected as a builder, so that the effect of improving the wettability of the cleaning agent on the surface of a workpiece is remarkable. The C4-C8 alcohol can be selected from straight chain or branched chain fatty alcohols such as butanol, isobutanol, n-pentanol, n-hexanol, n-heptanol, and n-octanol.

Further comprises 1-5 parts of carbonate of the alcohol amine compound.

The carbonate of the alcohol amine compound in the above amount has the effects of promoting dissolution of oily stains and improving stain removal efficiency. The carbonate of the alcohol amine compound can be prepared by introducing carbon dioxide into a solution of the alcohol amine compound, and can play a role in inhibiting pH rise and reducing corrosion of the cleaning agent on metal workpieces.

Further, the alcohol amine compound is one or more of the substances shown in chemical formula 1,

chemical formula 1

Wherein X is a hydrogen atom or a hydroxyl group, and n and m are both integers of 4 to 6.

The alcohol amine compound can be selected from N, N-butyl (4-hydroxybutyl) amine, N-pentyl (4-hydroxybutyl) amine, N-hexyl (4-hydroxybutyl) amine, N-butyl (5-hydroxypentyl) amine, N-pentyl (5-hydroxypentyl) amine, N-hexyl (5-hydroxypentyl) amine, N-butyl (6-hydroxyhexyl) amine, N-pentyl (6-hydroxyhexyl) amine and N, N-hexyl (6-hydroxyhexyl) amine, N-bis (4-hydroxybutyl) amine, N-bis (5-hydroxypentyl) amine and 6, 6' -iminobis-1-hexanol, all of which can provide excellent effects of promoting cleaning effect and preventing corrosion, when in use, carbonate of single or multiple alcohol amine compounds can be selected.

The invention aims to provide a preparation method of an environment-friendly water-based cleaning agent, and the environment-friendly water-based cleaning agent prepared by the method has the advantages of no ODS (ozone depleting substance) substances, good cleaning effect, environment friendliness and low residue.

In order to achieve the purpose, the invention provides the following technical scheme:

the preparation method of the environment-friendly water-based cleaning agent comprises the following steps

P1, weighing raw materials of triethanolamine oleate soap, pentaerythritol, a surfactant, an alkaline agent, a builder, a defoaming agent, a corrosion inhibitor and water according to the weight part ratio;

p2, adding the weighed water into the mixing equipment, then adding the weighed triethanolamine oleate soap, pentaerythritol and surfactant, and stirring and mixing uniformly;

p3, adding an alkaline agent, a builder, a defoaming agent and a corrosion inhibitor, and continuously stirring and uniformly mixing.

By adopting the technical scheme, the triethanolamine oleate soap, the pentaerythritol and the surfactant are added into water and stirred for mixing, so that the components can be quickly dissolved and uniformly mixed, then the alkaline agent, the builder, the defoaming agent and the corrosion inhibitor are added, and the mixture is continuously stirred until the components are uniformly mixed to obtain the environment-friendly water-based cleaning agent.

Further, the steps P2 and P3 are stirred and mixed at the speed of 300-800 rpm.

In conclusion, the invention has the following beneficial effects:

1. no ODS substance is added, so that the environment is protected;

2. the cleaning agent prepared by taking triethanolamine oleate soap and pentaerythritol as main cleaning active ingredients and matching with a surfactant, a builder, a defoaming agent and the like has excellent decontamination effect, is suitable for removing mechanical oil, cutting oil, rosin-based soldering flux residue and the like in industrial cleaning, and has the advantages of low residue and no secondary pollution;

3. carbonate of alcohol amine compounds is also doped in the formula of the cleaning agent in the preferred scheme, so that the cleaning effect of the cleaning agent is further improved, and the corrosion resistance is improved.

Detailed Description