CN109280418B - Deinking agent, preparation method and deinking method thereof - Google Patents
Deinking agent, preparation method and deinking method thereof Download PDFInfo
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- CN109280418B CN109280418B CN201811095958.8A CN201811095958A CN109280418B CN 109280418 B CN109280418 B CN 109280418B CN 201811095958 A CN201811095958 A CN 201811095958A CN 109280418 B CN109280418 B CN 109280418B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
- C09D9/04—Chemical paint or ink removers with surface-active agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
- C09D9/005—Chemical paint or ink removers containing organic solvents
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Abstract
The invention discloses a deinking agent, a preparation method and a deinking method thereof, wherein the deinking agent comprises the following components in percentage by weight: 10-27% of alkalescent compound, 5-20% of organic solvent, 1-5% of corrosion inhibitor, 1-8% of surfactant and the balance of water, wherein the organic solvent is alcohol ether organic solvent; the deinking agent prepared by the invention has good deinking effect, high deinking efficiency, small volatility and no harm to the environment, does not influence the surface roughness, the glossiness and the haze of AG glass, and can be used for water-based anti-reflection frosted glass for intelligent mobile equipment.
Description
Technical Field
The invention belongs to the technical field of chemical deinking, and relates to a deinking agent, a preparation method thereof and a deinking method thereof.
Background
The anti-reflection glass (AG glass) is a kind of glass with special processing on the glass surface, and is characterized by that the original glass reflecting surface is changed into a matte non-reflecting surface (surface is uneven), and its principle is that the double-side or single-side of high-quality glass sheet is specially processed. Compared with common glass, the AG glass has the advantages that the reflectance ratio is lower, the light reflectance is reduced to below 1% from 8%, clear and transparent visual effects are created by using the technology, so that an observer can experience better sensory vision, and the AG glass has the characteristics of novel shape and comfortable hand feeling. With the continuous pursuit of new product innovation by users, the AG glass will become a big trend of future development. The same as the traditional cover plate glass is that AG glass also carries out ink jet and coating processes, and when the printing ink screen printing is poor, a deinking agent is needed to remove the printing ink. Because of the requirements on parameters and hand feeling after sanding the AG glass, the deinking agent used in the process needing deinking can not influence the surface roughness, the glossiness and the haze of the AG glass, and the deinking efficiency is high.
The glass deinking agent used in the market at present mainly has the following two problems. The organic solvent used in the method has high toxicity and poor biodegradability, such as organic solvents like pyrrolidone and alkylphenol ethoxylates, and the like, and has great harm to the health of operators and the environment. Secondly, the glass deinking agent in the current market is basically used for removing ink on plane glass, and has high alkali content and high use temperature. The crystal on the surface of the AG glass is corroded, so that the glass frosted surface is uneven and heterochromatic, and the deinking processing requirement of the AG glass cannot be met.
CN107383997A discloses an environment-friendly glass deinking agent, which consists of the following components in concentration: 1-5% of sodium octyl sulfonate, 1-5% of fatty acid methyl ester ethoxy compound sulfonate, 2-6% of alkyl glucoside, 2-6% of diethylene glycol methyl ether, 3-7% of dipropylene glycol methyl ether, 1.5-3% of sodium metasilicate and 5-15% of inorganic alkali. Deionized water was added to 100%. The deinking agent prepared by the method is low in volatility and toxicity, but can corrode AG glass surface crystals, and is not suitable for deinking of AG glass cover plates.
CN107345089A discloses a glass deinking agent, which comprises the following components in percentage by mass: 10 to 30 percent of strong alkaline substance of potassium ions, 0.5 to 5 percent of inorganic slow release agent, 1 to 5 percent of organic slow release agent, 5 to 15 percent of stabilizing agent, 1 to 5 percent of penetrating agent, 10 to 30 percent of organic solvent and the balance of water. The deinking time of the deinking agent prepared by the invention is short, and the corrosion to glass in the deinking process can be reduced, but the influence on the haze of the glass is not mentioned.
CN104130622A discloses a deinking agent for removing ink on glass panels of mobile phones and tablet computers, which comprises the following components in percentage by weight: 25 to 40 percent of stripping agent; 8 to 20 percent of penetrant; 8 to 12 percent of stabilizer; 2 to 4 percent of emulsifier; 3% -8% of a softening agent; the balance being water. The deinking agent prepared by the invention has good deinking effect and does not corrode glass, but the deinking efficiency and the influence on the haze of the glass are not mentioned.
Therefore, it is necessary to develop a deinking agent which has good deinking effect, high deinking efficiency, low volatility and no environmental pollution and does not affect the surface roughness, the glossiness and the haze of the AG glass.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the deinking agent, the preparation method thereof and the deinking method thereof, wherein the deinking agent has the advantages of good deinking effect, high deinking efficiency, small volatility and no harm to the environment, does not influence the surface roughness, the glossiness and the haze of AG glass, and is used for the water-based anti-reflection frosted glass for intelligent mobile equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
one purpose of the invention is to provide a deinking agent, which is characterized by comprising the following components in percentage by weight:
the organic solvent is an alcohol ether organic solvent.
The invention selects the alkalescent compound, can not corrode frosted glass, and can complex ions in a system by matching with the corrosion inhibitor, thereby further reducing the corrosion of the ions to the glass.
The alcohol ether organic solvent selected by the invention can play a role in swelling the ink on one hand, and can be compounded with the surfactant for use on the other hand, so that the tension of the glass surface is reduced, and the deinking efficiency is greatly improved.
In the present invention, the weight percentage of the weakly basic compound is 10-27%, such as 10%, 12%, 15%, 17%, 20%, 22%, 25%, 27%, etc.
In the present invention, the weight percentage of the organic solvent is 5-20%, such as 5%, 8%, 10%, 12%, 15%, 18%, 20%, etc.
In the present invention, the weight percentage of the corrosion inhibitor is 1-5%, such as 1%, 2%, 3%, 4%, 5%, etc.
In the present invention, the weight percentage of the surfactant is 1-8%, such as 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, etc.
In the present invention, the water is added to the balance.
As a preferable technical scheme of the invention, the deinking agent comprises the following components in percentage by weight:
as a preferable technical scheme of the invention, the deinking agent comprises the following components in percentage by weight:
in the present invention, the weakly basic compound is any one of carbonate, bicarbonate or tri-bicarbonate compound or a combination of at least two thereof.
In the present invention, the carbonate is sodium carbonate and/or potassium carbonate.
In the present invention, the bicarbonate is sodium bicarbonate and/or potassium bicarbonate.
In the present invention, the tri-salt bicarbonate is sodium sesquicarbonate and/or potassium tri-bicarbonate.
In the present invention, the weakly basic compound is preferably a combination of potassium carbonate and sodium sesquicarbonate.
In the present invention, the mass ratio of potassium carbonate to sodium bicarbonate is 3:1 to 10:1, such as 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1, 10:1, and the like.
The invention selects the potassium carbonate and the sodium sesquicarbonate to be matched for use, on one hand, the corrosion effect on the glass caused by over-strong alkalinity can be avoided, on the other hand, the stability of the system can be increased, and the mass ratio of the potassium carbonate to the sodium sesquicarbonate is in the given range, so that the deinking effect is better, and the corrosion on the glass workpiece can be avoided; when the mass ratio of the two is out of the range specified in the present invention, the deinking effect is lowered.
In the present invention, the organic solvent is any one or a combination of at least two of ethylene glycol ethyl ether, diethylene glycol ethyl ether, dipropylene glycol butyl ether, and propylene glycol methyl ether, preferably a combination of diethylene glycol ethyl ether and dipropylene glycol butyl ether.
Preferably, the mass ratio of dipropylene glycol butyl ether to diethylene glycol ethyl ether is 1.5:1 to 3:1, such as 1.5:1, 1.8:1, 2:1, 2.2:1, 2.5:1, 2.8:1, 3:1, and the like.
The invention adopts the cooperation of the dipropylene glycol butyl ether and the diethylene glycol ethyl ether, and the synergistic effect can improve the deinking effect of the ink.
In the invention, the corrosion inhibitor is any one or combination of at least two of sodium metasilicate pentahydrate, sodium borate and potassium gluconate, and potassium gluconate is preferred.
In the invention, the surfactant is any one or a combination of at least two of alkyl polyglycoside, isomeric alcohol polyoxyethylene ether or tween 80, and preferably isomeric alcohol polyoxyethylene ether.
The invention also aims to provide a preparation method of the deinking agent, which comprises the following steps:
(1) mixing a weakly alkaline compound, a corrosion inhibitor and water, stirring for dissolving, standing and cooling to obtain a first mixture;
(2) adding a surfactant into the first mixture prepared in the step (1), and stirring and dissolving to obtain a second mixture;
(3) and (3) adding an organic solvent into the second mixture prepared in the step (2), and stirring and dissolving to obtain the deinking agent.
The deinking agent is prepared by a three-step method in the process of preparing the deinking agent, wherein the solubility of the mixture in the step (1) is low, partial raw materials are insoluble if the mixture is added with the subsequent raw materials, and the appearance of the product is turbid and even can be layered, so that the system is unstable; firstly, a weakly alkaline compound, a corrosion inhibitor and water are selected to be mixed, so that sufficient dissolution can be guaranteed, slight heating can be generated in the dissolving process, better conditions are provided for the dissolution of the second mixture, slight turbidity can occur after the second mixture and the first mixture are dissolved mutually, the organic solvent is added to play a role in solubilization, and the final product is in a uniform and transparent state.
The invention also aims to provide a deinking method for the glass workpiece, which comprises the steps of soaking and deinking the glass workpiece coated with the printing ink in the deinking agent, rinsing and drying.
In the present invention, the temperature of the immersion deinking is 70 to 80 ℃ such as 70 ℃, 71 ℃, 72 ℃, 73 ℃, 74 ℃, 75 ℃, 76 ℃, 77 ℃, 78 ℃, 79 ℃, 80 ℃ and the like.
In the present invention, the time for soaking deinking is 2-8min, such as 2min, 3min, 4min, 5min, 6min, 7min, 8min, etc.
In the invention, the glass workpiece is water-based anti-reflection frosted glass.
In the invention, the water-based anti-reflection frosted glass is water-based anti-reflection frosted glass for intelligent mobile equipment.
In the present invention, the temperature of the rinsing is 20 to 30 ℃ such as 20 ℃, 21 ℃, 22 ℃, 23 ℃, 24 ℃, 25 ℃, 26 ℃, 27 ℃, 28 ℃, 29 ℃, 30 ℃ and the like.
In the present invention, the solvent for the rinsing is water.
In the present invention, the drying temperature is 90 to 110 ℃, for example, 90 ℃, 92 ℃, 95 ℃, 97 ℃, 100 ℃, 102 ℃, 105 ℃, 107 ℃, 110 ℃ and the like.
As a preferred embodiment of the present invention, the deinking method comprises the steps of putting the aqueous anti-reflection frosted glass into the deinking agent of claims 1 to 5, soaking and deinking for 2 to 8min at 70 to 80 ℃, rinsing with water at 20 to 30 ℃, and drying at 90 to 110 ℃.
In the invention, the glass workpiece is water-based anti-reflection frosted glass used for intelligent mobile equipment.
Compared with the prior art, the invention has the following beneficial effects:
the invention selects the alkalescent compound and the corrosion inhibitor to be used in combination, so that the influence of the glass deinking agent on AG frosting parameters can be effectively prevented; the alcohol ether organic solvent selected by the invention can play a role in swelling the ink on one hand, and can be compounded with the surfactant for use to reduce the tension of the glass surface on the other hand, thereby greatly improving the deinking efficiency; the deinking agent prepared by the invention has high deinking efficiency, small volatility and small harm to human health, and does not influence the surface roughness, glossiness and haze of AG frosted glass.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The embodiment provides a deinking agent, which comprises the following components in percentage by weight:
the weak alkaline compound is a mixture of potassium carbonate and sodium sesquicarbonate, the mass ratio of the potassium carbonate to the sodium sesquicarbonate is 9:1, the organic solvent is a mixture of diethylene glycol ethyl ether and dipropylene glycol butyl ether, the mass ratio of the dipropylene glycol butyl ether to the diethylene glycol ethyl ether is 2.4:1, the corrosion inhibitor is potassium gluconate, and the surfactant is isoalcohol polyoxyethylene ether.
The preparation method of the deinking agent comprises the following steps:
(1) mixing potassium carbonate, sodium sesquicarbonate, potassium gluconate and water, stirring for dissolving, standing and cooling to obtain a first mixture;
(2) adding isomeric alcohol polyoxyethylene ether into the first mixture prepared in the step (1), and stirring and dissolving to obtain a second mixture;
(3) adding diethylene glycol ethyl ether and dipropylene glycol butyl ether into the second mixture obtained in the step (2), and stirring to dissolve to obtain the deinking agent.
The deinking method comprises the following steps:
(1) selecting 5 pieces of AG mobile phone cover plate glass with the same specification, ensuring that each piece of glass is clean and has no scratch and the AG parameters are all qualified;
(2) for the glass silk-screen printing ink, the ink is self-prepared acid-resistant protective ink, the baking temperature is 600 ℃, the baking time is 45 minutes, and the baked AG parameter is not changed;
(3) the deinking agent prepared in this example was poured into a 500mL beaker, and placed in a 75 ℃ constant temperature water bath to heat, after the temperature stabilized, glass was placed in the deinking agent, and after 5 minutes, glass was taken out, rinsed with water at 25 ℃, and then dried at 100 ℃.
Example 2
The embodiment provides a deinking agent, which comprises the following components in percentage by weight:
the weak alkaline compound is a mixture of potassium carbonate and sodium sesquicarbonate, the mass ratio of the potassium carbonate to the sodium sesquicarbonate is 5:1, the organic solvent is a mixture of diethylene glycol ethyl ether and dipropylene glycol butyl ether, the mass ratio of the dipropylene glycol butyl ether to the diethylene glycol ethyl ether is 3:1, the corrosion inhibitor is potassium gluconate, and the surfactant is isoalcohol polyoxyethylene ether.
The preparation method of the deinking agent comprises the following steps:
(1) mixing potassium carbonate, sodium sesquicarbonate, potassium gluconate and water, stirring for dissolving, standing and cooling to obtain a first mixture;
(2) adding isomeric alcohol polyoxyethylene ether into the first mixture prepared in the step (1), and stirring and dissolving to obtain a second mixture;
(3) adding diethylene glycol ethyl ether and dipropylene glycol butyl ether into the second mixture obtained in the step (2), and stirring to dissolve to obtain the deinking agent.
The deinking method comprises the following steps:
(1) selecting 5 pieces of AG mobile phone cover plate glass with the same specification as that of the embodiment 1, and ensuring that each piece of glass is clean and has no scratch and AG parameters are qualified;
(2) for the glass silk-screen printing ink, the ink is self-prepared acid-resistant protective ink, the baking temperature is 600 ℃, the baking time is 45 minutes, and the baked AG parameter is not changed;
(3) the deinking agent prepared in this example was poured into a 500mL beaker, and placed in a constant temperature water bath at 70 ℃ to heat, after the temperature was stabilized, glass was placed in the deinking agent, and after 8 minutes, the glass was taken out, rinsed with water at 20 ℃, and then dried at 110 ℃.
Example 3
The embodiment provides a deinking agent, which comprises the following components in percentage by weight:
the weak alkaline compound is a mixture of potassium carbonate and sodium sesquicarbonate, the mass ratio of the potassium carbonate to the sodium sesquicarbonate is 3:1, the organic solvent is a mixture of diethylene glycol ethyl ether and dipropylene glycol butyl ether, the mass ratio of the dipropylene glycol butyl ether to the diethylene glycol ethyl ether is 1.5:1, the corrosion inhibitor is potassium gluconate, and the surfactant is isoalcohol polyoxyethylene ether.
The preparation method of the deinking agent comprises the following steps:
(1) mixing potassium carbonate, sodium sesquicarbonate, potassium gluconate and water, stirring for dissolving, standing and cooling to obtain a first mixture;
(2) adding isomeric alcohol polyoxyethylene ether into the first mixture prepared in the step (1), and stirring and dissolving to obtain a second mixture;
(3) adding diethylene glycol ethyl ether and dipropylene glycol butyl ether into the second mixture obtained in the step (2), and stirring to dissolve to obtain the deinking agent.
The deinking method comprises the following steps:
(1) selecting 5 pieces of AG mobile phone cover plate glass with the same specification as that of the embodiment 1, and ensuring that each piece of glass is clean and has no scratch and AG parameters are qualified;
(2) for the glass silk-screen printing ink, the ink is self-prepared acid-resistant protective ink, the baking temperature is 600 ℃, the baking time is 45 minutes, and the baked AG parameter is not changed;
(3) the deinking agent prepared in this example was poured into a 500mL beaker, and heated in a constant temperature water bath at 80 ℃ to stabilize the temperature, and then glass was put into the deinking agent, and after 2 minutes, the glass was taken out, rinsed with water at 30 ℃, and then dried at 90 ℃.
Example 4
The embodiment provides a deinking agent, which comprises the following components in percentage by weight:
the weak alkaline compound is a mixture of potassium carbonate and sodium sesquicarbonate, the mass ratio of the potassium carbonate to the sodium sesquicarbonate is 10:1, the organic solvent is a mixture of diethylene glycol ethyl ether and dipropylene glycol butyl ether, the mass ratio of the dipropylene glycol butyl ether to the diethylene glycol ethyl ether is 2:1, the corrosion inhibitor is potassium gluconate, and the surfactant is isoalcohol polyoxyethylene ether.
The preparation method of the deinking agent comprises the following steps:
(1) mixing potassium carbonate, sodium sesquicarbonate, potassium gluconate and water, stirring for dissolving, standing and cooling to obtain a first mixture;
(2) adding isomeric alcohol polyoxyethylene ether into the first mixture prepared in the step (1), and stirring and dissolving to obtain a second mixture;
(3) adding diethylene glycol ethyl ether and dipropylene glycol butyl ether into the second mixture obtained in the step (2), and stirring to dissolve to obtain the deinking agent.
The deinking method comprises the following steps:
(1) selecting 5 pieces of AG mobile phone cover plate glass with the same specification as that of the embodiment 1, and ensuring that each piece of glass is clean and has no scratch and AG parameters are qualified;
(2) for the glass silk-screen printing ink, the ink is self-prepared acid-resistant protective ink, the baking temperature is 600 ℃, the baking time is 45 minutes, and the baked AG parameter is not changed;
(3) the deinking agent prepared in this example was poured into a 500mL beaker, and placed in a 75 ℃ constant temperature water bath to heat, after the temperature stabilized, glass was placed in the deinking agent, and after 5 minutes, the glass was taken out, rinsed with water at 20 ℃, and then dried at 110 ℃.
Example 5
The embodiment provides a deinking agent, which comprises the following components in percentage by weight:
the weak alkaline compound is a mixture of potassium carbonate and sodium sesquicarbonate, the mass ratio of the potassium carbonate to the sodium sesquicarbonate is 5:1, the organic solvent is a mixture of diethylene glycol ethyl ether and dipropylene glycol butyl ether, the mass ratio of the dipropylene glycol butyl ether to the diethylene glycol ethyl ether is 2:1, the corrosion inhibitor is potassium gluconate, and the surfactant is isoalcohol polyoxyethylene ether.
The preparation method of the deinking agent comprises the following steps:
(1) mixing potassium carbonate, sodium sesquicarbonate, potassium gluconate and water, stirring for dissolving, standing and cooling to obtain a first mixture;
(2) adding isomeric alcohol polyoxyethylene ether into the first mixture prepared in the step (1), and stirring and dissolving to obtain a second mixture;
(3) adding diethylene glycol ethyl ether and dipropylene glycol butyl ether into the second mixture obtained in the step (2), and stirring to dissolve to obtain the deinking agent.
The deinking method comprises the following steps:
(1) selecting 5 pieces of AG mobile phone cover plate glass with the same specification as that of the embodiment 1, and ensuring that each piece of glass is clean and has no scratch and AG parameters are qualified;
(2) for the glass silk-screen printing ink, the ink is self-prepared acid-resistant protective ink, the baking temperature is 600 ℃, the baking time is 45 minutes, and the baked AG parameter is not changed;
(3) the deinking agent prepared in this example was poured into a 500mL beaker, and placed in a 70 ℃ constant temperature water bath to heat, after the temperature stabilized, glass was placed in the deinking agent, and after 5 minutes, glass was taken out, rinsed with water at 25 ℃, and then dried at 100 ℃.
Example 6
This example differs from example 1 only in that the mass ratio of dipropylene glycol butyl ether to diethylene glycol ethyl ether is 1:1, and the remaining raw materials and the amounts of the raw materials and the preparation method are the same as in example 1.
Example 7
This example differs from example 1 only in that the mass ratio of dipropylene glycol butyl ether to diethylene glycol ethyl ether is 5:1, and the remaining raw materials and the amounts of the raw materials and the preparation method are the same as in example 1.
Example 8
The only difference from example 1 is that the organic solvent is diethylene glycol ethyl ether, and the rest of the raw materials and the amounts of the raw materials and the preparation method are the same as those in example 1.
Example 9
The only difference from example 1 is that the organic solvent is dipropylene glycol butyl ether, and the remaining raw materials and the amounts of the raw materials and the preparation method are the same as those of example 1.
Example 10
The difference between the example and the example 1 is that the mass ratio of potassium carbonate to sodium sesquicarbonate is 1:1, and the rest of the raw materials and the amount of the raw materials and the preparation method are the same as the example 1.
Example 11
This example differs from example 1 only in that the mass ratio of potassium carbonate to sodium sesquicarbonate is 15:1, and the remaining raw materials and the amounts of raw materials and the preparation method are the same as in example 1.
Example 12
The difference from example 1 is that the weakly basic compound is sodium sesquicarbonate, and the rest of the raw materials and the amounts of the raw materials and the preparation method are the same as those of example 1.
Example 13
The only difference from example 1 is that the weakly basic compound is potassium carbonate, and the remaining raw materials and the amounts of the raw materials and the preparation method are the same as those of example 1.
Example 14
This example differs from example 1 only in that sodium carbonate is used instead of potassium carbonate and sodium sesquicarbonate and the remaining raw materials and raw material amounts and preparation method are the same as in example 1.
Example 15
This example differs from example 1 only in that sodium bicarbonate was used instead of potassium carbonate and sodium sesquicarbonate and the remaining raw materials and amounts of raw materials and preparation method were the same as in example 1.
Example 16
This example differs from example 1 only in that propylene glycol methyl ether is used instead of the combination of diethylene glycol ethyl ether and dipropylene glycol butyl ether and the remaining raw materials and raw material amounts and preparation method are the same as in example 1.
Example 17
This example differs from example 1 only in that alkylpolyglycoside is used instead of the isomeric alcohol polyoxyethylene ether, and the remaining raw materials and amounts of raw materials and preparation method are the same as in example 1.
Example 18
This example differs from example 1 only in that sodium borate is used instead of potassium gluconate, and the remaining raw materials and amounts of raw materials and preparation method are the same as in example 1.
Comparative example 1
This comparative example differs from example 1 only in that ethanol is used instead of the combination of diethylene glycol ethyl ether and dipropylene glycol butyl ether, and the remaining raw materials and raw material amounts and preparation method are the same as in example 1.
Comparative example 2
This comparative example differs from example 1 only in that sodium hydroxide is used instead of potassium carbonate and sodium sesquicarbonate, and the remaining raw materials and the amounts of the raw materials and the preparation method are the same as in example 1.
Comparative example 3
The comparative example is different from example 1 only in that the raw materials for preparing the deinking agent do not include the corrosion inhibitor, while the addition amount of the weakly basic compound is the sum of the addition amounts of the weakly basic compound and the corrosion inhibitor in example 1, namely the weight percentage of the weakly basic compound is 23%, and the rest raw materials, the raw materials and the preparation method are the same as example 1.
Comparative example 4
This comparative example is different from example 1 only in that the surfactant is not included in the raw materials for the preparation of the deinking agent, and the amount of the organic solvent added is the sum of the amounts of the organic solvent and the surfactant in example 1, i.e., the weight percentage of the organic solvent added is 24%, and the remaining raw materials and the amounts of the raw materials and the preparation method are the same as those in example 1.
After the AG glass was deinked in the deinking agents prepared in examples 1 to 18 and comparative examples 1 to 4, the deinking efficiency was calculated from the area of the residual ink after deinking; calculating the changes of the roughness Ra and the haze H through a roughness meter and a haze meter; and testing the content of VOC by gas chromatography-mass spectrometry;
wherein the deinking ratio is the area of residual ink/the area of original ink multiplied by 100%
The changes in deinking yield, roughness Ra and haze H of AG glass after deinking in the deinking agents prepared in examples 1 to 18 and comparative examples 1 to 4 are shown in Table 1:
TABLE 1
The results in table 1 show that the deinking agent prepared by the invention has good deinking effect, and does not affect the roughness, glossiness and haze of the AG glass surface; as is clear from the comparison between example 1 and examples 6 to 7, when the component ratio of dipropylene glycol butyl ether to diethylene glycol ethyl ether in the starting materials for preparation is out of the range defined in the present invention, the deinking efficiency is low and the deinking effect is affected; as can be seen from the comparison of example 1 and examples 8-9, when one of dipropylene glycol butyl ether and diethylene glycol ethyl ether is absent in the starting material, the deinking effect of the prepared deinking agent becomes poor; from the comparison of example 1 and examples 10-11, it can be seen that the deinking efficiency is less than optimal when the component ratios of potassium carbonate and sodium sesquicarbonate in the raw materials are outside the range defined in the present invention; as can be seen from the comparison of example 1 and examples 12-13, when one of potassium carbonate and sodium sesquicarbonate is absent from the raw material, the deinking effect of the prepared deinking agent becomes poor and there is slight damage to the glass work piece; as can be seen from the comparison between example 1 and examples 14 to 18, when other raw materials are used instead, the deinking effect is not optimal, and the variation values of the roughness Ra and the haze H of the glass workpiece are reduced; as is clear from the comparison between example 1 and comparative example 1, when the alcohol ether organic solvent is replaced with another organic solvent, the deinking efficiency of the deinking agent is affected, and the deinking effect is further affected; as can be seen from the comparison between example 1 and comparative example 2, when a strongly basic compound is used to replace a weakly basic compound, the prepared deinking agent has a large influence on the changes of the roughness Ra and the haze H value of the glass workpiece, i.e., the glass workpiece is corroded more seriously; as can be seen from the comparison between example 1 and comparative example 3, when the raw materials for preparing the deinking agent do not include the corrosion inhibitor, the glass workpiece is severely corroded; as can be seen from the comparison between example 1 and comparative example 4, when the surfactant is not included in the raw materials for preparing the deinking agent, the deinking rate of the deinking agent is greatly affected; therefore, the deinking agent provided by the invention can ensure a better deinking effect and cannot corrode a glass workpiece.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (13)
1. The deinking agent is characterized by comprising the following components in percentage by weight:
10-27% of alkalescent compound;
5-20% of an organic solvent;
1-5% of corrosion inhibitor;
1-8% of a surfactant;
the balance of water;
a combination of the weakly basic compound potassium carbonate and sodium sesquicarbonate;
the mass ratio of the potassium carbonate to the sodium sesquicarbonate is 3:1-10: 1;
the organic solvent is a combination of diethylene glycol ethyl ether and dipropylene glycol butyl ether;
the mass ratio of the dipropylene glycol butyl ether to the diethylene glycol ethyl ether is 1.5:1-3: 1;
the corrosion inhibitor is potassium gluconate;
the surfactant is isomeric alcohol polyoxyethylene ether.
2. The deinking agent according to claim 1, characterized in that the deinking agent comprises the following components in percentage by weight:
15-25% of alkalescent compound;
15-20% of an organic solvent;
1-5% of corrosion inhibitor;
5-8% of a surfactant;
the balance of water.
3. The deinking agent according to claim 1, characterized in that the deinking agent comprises the following components in percentage by weight:
a weakly basic compound 20%;
17% of an organic solvent;
3% of corrosion inhibitor;
7% of a surfactant;
the balance of water.
4. A method for preparing a deinking agent according to any one of claims 1 to 3, characterized in that it comprises the steps of:
(1) mixing a weakly alkaline compound, a corrosion inhibitor and water, stirring for dissolving, standing and cooling to obtain a first mixture;
(2) adding a surfactant into the first mixture prepared in the step (1), and stirring and dissolving to obtain a second mixture;
(3) and (3) adding an organic solvent into the second mixture prepared in the step (2), and stirring and dissolving to obtain the deinking agent.
5. A method for deinking a glass workpiece, characterized in that the deinking method comprises the steps of soaking and deinking the glass workpiece coated with ink in the deinking agent as defined in any one of claims 1 to 3, rinsing and drying.
6. The deinking process as claimed in claim 5, wherein said immersion deinking temperature is in the range of 70 to 80 ℃.
7. The deinking process as claimed in claim 5, wherein the soaking deinking time is 2 to 8 min.
8. The deinking method according to claim 5, wherein said glass workpiece is an aqueous antireflective frosted glass.
9. The deinking method according to claim 8, wherein the aqueous antireflection frosting glass is an aqueous antireflection frosting glass for smart mobile devices.
10. Deinking method according to claim 5, characterized in that the temperature of the rinsing is between 20 and 30 ℃.
11. Deinking method according to claim 5, characterized in that the rinsing solvent is water.
12. Deinking method according to claim 5, characterized in that the drying temperature is 90-110 ℃.
13. The deinking method as claimed in claim 5, wherein the deinking method comprises immersing the aqueous anti-reflective glass mat in the deinking agent as claimed in any one of claims 1 to 3 at 70 to 80 ℃ for deinking for 2 to 8 minutes, rinsing the resulting glass mat with water at 20 to 30 ℃ and drying the glass mat at 90 to 110 ℃.
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| CN105153788A (en) * | 2015-09-28 | 2015-12-16 | 湖南利尔电子材料有限公司 | Deinking agent for display window glass |
| CN106398374A (en) * | 2016-08-30 | 2017-02-15 | 广东山之风环保科技有限公司 | Deinking method for glass workpiece and water-based deinking agent used by deinking method as well as preparation method of water-based deinking agent |
| CN107603327A (en) * | 2017-09-27 | 2018-01-19 | 广东星弛光电科技有限公司 | Environment-friendly type safety glass deinking agent and preparation method thereof |
| CN108395762A (en) * | 2018-04-11 | 2018-08-14 | 广州亦盛环保科技有限公司 | A kind of glass deinking agent and application thereof |
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| CN105153788A (en) * | 2015-09-28 | 2015-12-16 | 湖南利尔电子材料有限公司 | Deinking agent for display window glass |
| CN106398374A (en) * | 2016-08-30 | 2017-02-15 | 广东山之风环保科技有限公司 | Deinking method for glass workpiece and water-based deinking agent used by deinking method as well as preparation method of water-based deinking agent |
| CN107603327A (en) * | 2017-09-27 | 2018-01-19 | 广东星弛光电科技有限公司 | Environment-friendly type safety glass deinking agent and preparation method thereof |
| CN108395762A (en) * | 2018-04-11 | 2018-08-14 | 广州亦盛环保科技有限公司 | A kind of glass deinking agent and application thereof |
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