Glass ceramic cleaning agent and preparation method thereof

Abstract

The invention provides a glass ceramic cleaning agent and a preparation method thereof, and belongs to the technical field of cleaning. The cleaning agent comprises the following components in percentage by weight: 4%-6% of a chelating agent, 4%-5% of a dispersing agent, 4%-5% of organic amine alkali, 3%-4% of an antistatic agent, 0.5%-1% of a low-foam wetting agent, 1%-1.5% of a penetrating agent, 1%-1.5% of a foam reducer, 0.3%-0.5% of a slow-release protective agent and the balance of water, the pH (Potential of Hydrogen) is 7.0 to 9.0; the chelating agent is a mixture of one or more of EDTA-4Na, NTA-3Na and tetrasodium glutamate diacetate, and organic acid and / or organic acid salt. The microcrystalline glass cleaning agent disclosed by the invention has the advantages of low foam, mildness, super-strong dispersity, high wettability, rapid permeability to dirt and antistatic property, and is suitable for a spraying flat plate cleaning machine.

Description

Technical Field

[0001] The present invention relates to the field of cleaning technology, and more specifically, to a microcrystalline glass cleaner and a preparation method thereof. Background Art

[0002] Microcrystalline glass, commonly known as microcrystalline jade or ceramic glass, is a functional and structural material that is widely used in high-tech fields such as 5G, electronics, military industry, aerospace, optics, and medical care.

[0003] Due to the unique properties of microcrystalline glass (ultrasound can easily scratch the surface of microcrystalline glass, and high-strength alkali can easily cause the surface of microcrystalline glass to become colorful, foggy and severely scratched), the cleaning method of traditional glass has changed, and it needs to be cleaned with a spray flat cleaning machine. Conventional microcrystalline cleaning agents use silicates as alkali donors and protective agents, and are compounded with EDTA-4Na, sodium citrate, potassium sodium tartrate, and sodium gluconate as chelating agents, surfactants, and monoethanolamine / triethanolamine as main raw materials. The pH value is maintained at 11-14. There are the following defects in cleaning applications: 1. Due to the presence of silicates, the surface of microcrystalline glass is prone to film formation after cleaning, and residual white spots; 2. High concentrations of chelating agents can easily cause the glass surface to lose some metal ions through chelation, thereby affecting the post-processing stability of the glass surface and the physical properties of the product; 3. Conventional surfactants have the disadvantages of high foam and difficulty in rinsing. Summary of the invention

[0004] Based on the above technical problems existing in the prior art, the purpose of the present invention is to provide a microcrystalline glass cleaner and a preparation method thereof, wherein a chelating system is constructed by using one or more of EDTA-4Na / NTA-3Na / tetrasodium glutamate diacetate and an organic acid and / or an organic acid salt in a certain mass ratio, and an organic amine base is used as a pH buffer, and the neutral low-foaming environment, high-strength decontamination ability, and low-foaming and easy-rinsing characteristics are suitable for current common flat-panel cleaning equipment. The present invention uses multiple types of low-foaming polyether surfactants as active bodies, and has the characteristics of environmental protection, mildness, low foaming and easy rinsing without reducing the cleaning performance.

[0005] In order to achieve the above object, the technical solution of the present invention is as follows:

[0006] A microcrystalline glass cleaner comprises the following components by weight percentage: 4%-6% of a chelating agent, 4%-5% of a dispersant, 4%-5% of an organic amine base, 3%-4% of an antistatic agent, 0.5%-1% of a low-foaming wetting agent, 1%-1.5% of a penetrant, 1%-1.5% of a defoaming agent, 0.3%-0.5% of a slow-release protective agent, and the balance is water.

[0007] Furthermore, the chelating agent is a chelating system formed by neutralization reaction of any one or more of EDTA-4Na, NTA-3Nac tetrasodium glutamate diacetate and organic acid and / or organic acid salt, wherein the mass ratio of any one or more of EDTA-4Na, NTA-3Nac tetrasodium glutamate diacetate and organic acid and / or organic acid salt is 2:1.

[0008] Furthermore, the organic acid includes any one of citric acid and tartaric acid.

[0009] Furthermore, the organic acid salt includes any one of sodium gluconate, sodium citrate, and potassium sodium tartrate.

[0010] Furthermore, the dispersant includes at least one of sodium polyacrylate, sodium dodecyl sulfate, methyl amyl alcohol, cellulose derivatives, and polyacrylamide.

[0011] There is no limitation on the specific type of sodium polyacrylate dispersant, for example, it may be PAAS and PA25CL.

[0012] Furthermore, the antistatic agent includes at least one of polyethylene glycol, alkyl sulfonate, polycarbonate, and quaternary ammonium salt. The polyethylene glycol may be PEG-400 or PEG-600.

[0013] Furthermore, the low foam wetting agent includes at least one of trans polyether RPE series 1740 / 1720, fatty alcohol EO-PO block polyether EP2584 / EP2445, propylene glycol block polyether L-62 / L-63 / L-64, siloxane modified polyether 5840, and fatty alcohol polyether LF-901.

[0014] Furthermore, the defoaming agent includes at least one of alkoxylated fatty alcohol FK86, acetylene glycol polyoxyethylene ether FS-600 series, LF8530 ethoxylated propoxy C12-15 straight chain / branched fatty alcohol, and polyethylene fatty alcohol ether C200 series.

[0015] Furthermore, the sustained-release protective agent includes at least one of thiourea, urotropine, benzotriazole, and methylbenzotriazole.

[0016] Furthermore, the organic amine base includes at least one of N-methylmonoethanolamine, monoethanolamine, N,N-dimethylmonoethanolamine, diethanolamine, and triethanolamine.

[0017] Furthermore, the penetrant includes at least one of fatty alcohol polyoxyethylene ether JFC series, 2,4-diphenyl-4-methyl-1-pentene / methylstyrene linear dimer YJH-40, and 3777 silicone wetting penetrant.

[0018] Furthermore, the pH of the microcrystalline glass cleaning agent is 7.0-9.0.

[0019] The preparation method of the above-mentioned microcrystalline glass cleaner comprises the following steps:

[0020] Add chelating agent to water and stir to fully react until colorless and transparent, continue stirring, add dispersant, organic amine base, antistatic agent, low foaming wetting agent, penetrant, defoamer, corrosion inhibitor in sequence, stir evenly and fully dissolve to obtain.

[0021] The chelating agent of the present invention is compounded by mixing one or more of EDTA-4Na / NTA-3Na / tetrasodium glutamate diacetate with an organic acid and / or an organic acid salt, and an acid-base neutralization reaction forms a chelating system with a neutral pH value of 7-9. The organic amine base is present in a free state in the system as a pH buffer. The dispersant is used to disperse and separate large particles of dirt on the glass surface. The antistatic agent is used to weaken the charge of adsorbed dust so that the dust dirt has no ability to adsorb on the glass surface. The low-foam wetting agent is used to wet the surface dirt and reduce the surface tension so that the dirt is quickly dissolved in the cleaning agent solution. The penetrant acts as a penetrant on the dirt surface so that the cleaning agent quickly penetrates into the dirt. The defoaming agent acts as a defoaming agent and can quickly weaken the foaming ability of the cleaning agent, thereby achieving a low-foam or no-foam effect. The corrosion inhibitor is used as a protective agent to protect the metal atoms contained in the glass from being corroded by the cleaning agent solution.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention belongs to a neutral mild cleaning agent with a pH value of 7-9.

[0024] 2. The present invention adopts biodegradable raw materials, which are mild to the environment and do not cause environmental pollution.

[0025] 3. The present invention has a strong decontamination ability in a mild cleaning environment, and can effectively clean the residual cerium oxide polishing powder, dirty dust, and oily fingerprints on the glass surface.

[0026] 4. The microcrystalline glass cleaning agent of the present invention is friendly to the silk-screen ink, coating layer, and AF protective oil on the surface of the microcrystalline glass, and does not corrode or damage the relevant protective layers on the glass surface.

[0027] 5. The microcrystalline glass cleaning agent of the present invention contains a metal protective agent, which protects the metal atoms inside the glass and prevents the cleaning agent from attacking and causing a large amount of metal atoms inside the glass to be lost, thereby affecting the product performance that the glass should have. DETAILED DESCRIPTION

[0028] Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited to the specific implementation disclosed below.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] It should be noted that the raw materials, instruments, etc. involved in the present invention are all common commercially available products.

[0031] Table 1 Formulations of Examples 1-5 and Comparative Examples 1-5

[0032]

[0033]

[0034] Its preparation method is:

[0035] Add the chelating agent to water according to the amount in Table 1, stir and react fully until it becomes colorless and transparent, continue stirring, add dispersant, organic amine base, antistatic agent, low foaming wetting agent, penetrant, defoamer, corrosion inhibitor in sequence, stir evenly and fully dissolve to obtain.

[0036] Comparative Example 6

[0037] According to the formula of Example 1 in Table 1, add chelating agent, dispersant, organic amine base, antistatic agent, low foam wetting agent, penetrant, defoaming agent and corrosion inhibitor into water, stir evenly and fully dissolve to obtain the product.

[0038] The cleaning agents prepared in the above examples and comparative examples were tested for performance. The method is as follows:

[0039] pH value detection: data detection through digital pH meter

[0040] Micro-ceramic glass cleaning effect: laboratory micro-plate machine ZC-8456 ， Spray cleaning test, cleaning process temperature 50-55℃, cleaning time 60S, cleaning concentration 1:20-1:10, strong light irradiation on the glass surface to observe and compare the glass surface cleanliness and the glass surface scratches.

[0041] Thickness change rate of the coating layer: ω = (glass thickness before cleaning - glass thickness after cleaning) / glass thickness before cleaning × 100%.

[0042] Safety test of silk screen ink: the silk screen ink changes in hundreds of grids, and the shedding of silk screen ink is observed under a mirror microscope to determine the safety of the ink.

[0043] Foam height test: The foam height and defoaming time are tested by shaking the graduated test tube with frosted cover up and down at the same frequency to determine the high, medium and low foam levels. The graduated test tube is 50ml, the test liquid height is 10ml, the foam height ≥5ml, and the defoaming time ≥5S indicates high foam. The foam height 2-5ml indicates medium foam, and the defoaming time 2-5S indicates low foam. The foam height ≤2ml and the defoaming time ≤2S indicates low foam.

[0044] The results are shown in Table 2.

[0045] Table 2

[0046]

[0047]

[0048] Result analysis: According to the data in Table 2, the ratio used in the present invention is 2-6 parts of chelating agent, 4-5 parts of dispersant, 4-5 parts of organic amine base, 3-4 parts of antistatic agent, 0.5-1 part of low foaming wetting agent, 1-1.5 parts of penetrant, 1-1.5 parts of defoaming agent, 0.3-0.5 parts of corrosion inhibitor, and the balance is water. It is the best ratio direction, can defoam well, quickly wet, has strong cleaning ability for dirt on the glass surface, has high glass surface cleanliness, is friendly to various glass surface silk screen inks, coating layers, and AF protective oils, and does not corrode and damage related protective layers on the glass surface.

[0049] Among them, a mixture of 4 parts of one or more of the chelating agents EDTA-4Na / NTA-3Na / tetrasodium glutamate diacetate and 2 parts of an organic acid and / or an organic acid salt is the chelating agent with the best cleaning effect.

[0050] The organic acid includes any one of citric acid and tartaric acid, and the organic acid salt includes any one of sodium gluconate, sodium citrate, and potassium sodium tartrate.

[0051] The dispersant includes at least one of sodium polyacrylate, sodium dodecyl sulfate, methyl amyl alcohol, cellulose derivatives, and polyacrylamide. The specific model of the sodium polyacrylate dispersant is not limited, for example, it can be PAAS and PA25CL.

[0052] The organic amine base includes at least one of N-methylmonoethanolamine, monoethanolamine, N,N-dimethylmonoethanolamine, diethanolamine and triethanolamine.

[0053] The antistatic agent includes at least one of polyethylene glycol, alkyl sulfonate, and polycarbonate. The polyethylene glycol may be PEG-400 or PEG-600.

[0054] The low foam wetting agent includes at least one of trans polyether RPE series 1740 / 1720, fatty alcohol EO-PO block polyether EP2584 / EP2445, propylene glycol block polyether L-62 / L-63 / L-64, siloxane modified polyether 5840, and fatty alcohol polyether LF-901.

[0055] The defoaming agent includes at least one of alkoxy fatty alcohol FK86, acetylene glycol polyoxyethylene ether FS-600 series, LF 8530 ethoxylated propoxy C12-15 straight chain / branched chain fatty alcohol, and polyethylene fatty alcohol ether C200 series.

[0056] The penetrant includes at least one of 2,4-diphenyl-4-methyl-1-pentene / methylstyrene linear dimer YJH-40 and 3777 silicone wetting penetrant.

[0057] The corrosion inhibitor comprises at least one of thiourea, hexamethylenetetramine and benzotriazole.

[0058] In addition, the present invention is a neutral product with low foaming, easy rinsing, environmental protection and safety. It does not require complicated environmental protection equipment processing. In a mild cleaning environment, it has high decontamination ability and can effectively clean the residual cerium oxide polishing powder, dirty dust, and oily fingerprints on the glass surface.

[0059] The neutral product of the present invention is friendly to the screen printing ink, coating layer and AF protective oil on the glass surface and does not corrode or damage the relevant protective layers on the glass surface.

[0060] The present invention adopts a metal protective agent to protect the metal atoms inside the glass, thereby preventing the metal atoms inside the glass from being lost in large quantities due to the attack of a cleaning agent, thereby affecting the product performance that the glass should have.

[0061] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A glass-ceramic cleaner, characterized in that: The invention comprises the following components by weight percentage: 4%-6% of chelating agent, 4%-5% of dispersing agent, 4%-5% of organic amine base, 3%-4% of antistatic agent, 0.5%-1% of low foam wetting agent, 1%-1.5% of penetrant, 1%-1.5% of defoaming agent, 0.3%-0.5% of sustained-release protective agent, and the balance is water; the pH value is 7.0-9.0; the chelating agent is a chelating system formed by neutralization reaction of any one or more of EDTA-4Na, NTA-3Nac tetrasodium glutamate diacetate and organic acid and / or organic acid salt.

2. The microcrystalline glass cleaner according to claim 1, characterized in that: The organic acid includes any one of citric acid and tartaric acid; the organic acid salt includes any one of sodium gluconate, sodium citrate and potassium sodium tartrate.

3. The microcrystalline glass cleaner according to claim 1, characterized in that: The dispersant includes at least one of sodium polyacrylate, sodium lauryl sulfate, methyl amyl alcohol, cellulose derivatives and polyacrylamide.

4. The microcrystalline glass cleaner according to claim 1, characterized in that: The antistatic agent includes at least one of polyethylene glycol and alkyl sulfonate. The polyethylene glycol may be PEG-400 or PEG-600.

5. The microcrystalline glass cleaner according to claim 1, characterized in that: The low foam wetting agent includes at least one of trans polyether RPE series 1740 / 1720, fatty alcohol EO-PO block polyether EP2584 / EP2445, propylene glycol block polyether L-62 / L-63 / L-64, siloxane modified polyether 5840, and fatty alcohol polyether LF-901.

6. The microcrystalline glass cleaner according to claim 1, characterized in that: The defoaming agent comprises at least one of alkoxylated fatty alcohol FK86, acetylene glycol polyoxyethylene ether FS-600 series, LF 8530 ethoxylated propoxy C12-15 straight chain / branched chain fatty alcohol, and polyethylene fatty alcohol ether C200 series.

7. The microcrystalline glass cleaner according to claim 1, characterized in that: The sustained-release protective agent includes at least one of thiourea, hexamethylenetetramine, benzotriazole and methylbenzotriazole.

8. The microcrystalline glass cleaner according to claim 1, characterized in that: The organic amine base includes at least one of N-methylmonoethanolamine, monoethanolamine, N,N-dimethylmonoethanolamine, diethanolamine and triethanolamine.

9. The penetrant according to claim 1 comprises at least one of fatty alcohol polyoxyethylene ether JFC series, 2,4-diphenyl-4-methyl-1-pentene / methylstyrene linear dimer YJH-40, and 3777 silicone wetting penetrant.

10. The method for preparing the microcrystalline glass cleaner according to any one of claims 1 to 9, comprising the following steps: Add chelating agent to water and stir to fully react until colorless and transparent, continue stirring, add dispersant, organic amine base, antistatic agent, low foaming wetting agent, penetrant, defoamer, corrosion inhibitor in sequence, stir evenly and fully dissolve to obtain.

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