High polymer material dust suppressant with high permeability as well as preparation method and application of high polymer material dust suppressant

Abstract

The invention discloses a high polymer material dust suppressant with strong permeability and a preparation method and application thereof, and is characterized in that the high polymer material dust suppressant is prepared according to the following steps: (1) sulfonation reaction: dissolving sophorolipid in an organic solvent, heating to 75-85 DEG C, stirring to dissolve, then adding sulfamic acid, keeping the temperature at 75-85 DEG C to react until the end, and removing the solvent to obtain a sulfonation product; dissolving the obtained modified sophorolipid in water, and adjusting the pH value to 7 to obtain a mixed solution I; (2) cross-linking copolymerization: adding polyethylene glycol into a container, adding water, heating and stirring until the polyethylene glycol is dissolved, adding vanillin, carrying out cross-linking reaction at 50-70 DEG C until the reaction is complete to obtain a mixed solution II, and carrying out mixed copolymerization reaction on the mixed solution I and the mixed solution II to obtain a mixed solution III; and (3) cooling the mixed solution III to room temperature, adjusting the pH value of the solution to be neutral, and adding a wetting agent into the mixed solution III to obtain the dust suppressant solution. The dust suppression agent has the advantages of high permeability, high erosion resistance, high wetting capacity, low possibility of secondary dust raising and excellent dust suppression effect.

Description

Technical Field

[0001] The invention relates to the technical field of dust suppressants, and in particular to a highly permeable polymer dust suppressant and a preparation method and application thereof. Background Art

[0002] During the mining and transportation of coal, a large amount of dust will be generated. This dust will not only cause serious pollution to the natural environment, but also pose a great threat to the health of workers. Dust will cause occupational diseases such as pneumoconiosis, which will bring great harm to the health of miners. What is more serious is that under certain conditions, when the dust concentration in the environment reaches a certain critical value, spontaneous combustion and explosion accidents may occur. In addition, the accumulation of dust will also damage some precision intelligent mechanical equipment in the mine, resulting in a significant reduction in the service life of the equipment and a significant reduction in reliability. It can be seen that the dust problem has become a major problem restricting the safe production of coal mines.

[0003] In order to reduce the damage caused by coal mine dust dispersion to personnel and equipment, commonly used dust suppression technologies include coal seam water injection, spray dust suppression, ventilation dust removal and chemical dust suppression. Among them, chemical dust suppression is one of the most novel dust suppression methods in the prior art. In actual coal mine dust prevention and control, wetting is a crucial step in the dust suppression process. However, most of the traditional polymer dust suppressants are not ideal in terms of penetration effect. This not only limits its effect in practical applications, but may also cause secondary pollution problems. At the same time, due to the high cost of these traditional dust suppressants, the economic benefits are not satisfactory. Therefore, it is urgent to develop a highly permeable polymer dust suppression material for efficient dust suppression in coal mines. Summary of the invention

[0004] In view of the deficiencies in the prior art, the first purpose of the present invention is to provide a method for preparing a highly permeable polymer dust suppressant, the second purpose is to provide a highly permeable polymer dust suppressant prepared thereby, and the third purpose is to provide its application. The highly permeable polymer dust suppressant has strong permeability and anti-corrosion effects, strong wetting ability, is not easy to cause secondary dust, and has excellent dust suppression effect.

[0005] To achieve the above first purpose, the present invention adopts the following technical solution: a method for preparing a highly permeable polymer dust suppressant, characterized in that the method is prepared according to the following steps:

[0006] (1) Preparation of modified sophorolipid: dissolve sophorolipid in an organic solvent, raise the temperature to 75-85°C, stir and dissolve, then add aminosulfonic acid, maintain the temperature at 75-85°C until the reaction is complete, remove the solvent, dissolve the obtained modified sophorolipid in water, adjust the pH to 7, and obtain a mixed solution I;

[0007] (2) Cross-linking copolymerization: add polyethylene glycol to a container, add water, heat and stir until dissolved, add vanillin, and cross-link at 50-70°C until the reaction is complete to obtain mixed solution II, and mix mixed solution I and mixed solution II for copolymerization to obtain mixed solution III.

[0008] (3) After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to be neutral, and a wetting agent is added to the mixed solution III to prepare a dust suppressant solution.

[0009] In the above scheme: the organic solvent is one of N,N-dimethylformamide, N,N-dimethylacetamide and ethyl acetate.

[0010] In the above scheme: the wetting agent is sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside, and the mass ratio is (0.5-2): (2-3)

[0011] In the above scheme, the amount of sophorolipid is 4-12 parts by weight, aminosulfonic acid is 0.8-2.8 parts, polyethylene glycol is 0.5-0.9 parts, vanillin is 0.125-0.225 parts, wetting agent is 0.7-1.1 parts, organic solvent is 10-90 parts, and water is 500-2500 parts.

[0012] In the above scheme: in step (1), the reaction time after adding aminosulfonic acid is 1-2h.

[0013] In the above scheme: in step (2), polyethylene glycol is added, water is added to 80-90°C, heated and stirred until dissolved, vanillin is added and reacted for 0.5h-1h to obtain mixed solution II.

[0014] In the above scheme: in step (2), mixed solution I and mixed solution II are mixed and reacted at 50-60° C. for 0.5 h-1 h to obtain mixed solution III.

[0015] In the above scheme: the water is distilled water.

[0016] The second object of the present invention is achieved as follows: a highly permeable polymer dust suppressant prepared by the method for preparing the highly permeable polymer dust suppressant.

[0017] The third object of the present invention is achieved by: using the highly permeable polymer dust suppressant in coal mine dust suppression.

[0018] The sophorolipid of the present invention is a biosurfactant, which is non-toxic, biodegradable, environmentally friendly, does not cause secondary pollution after use, does not damage vegetation, and meets the current pursuit of green and environmentally friendly products. Sophorolipids have excellent surface active properties, such as emulsification, wetting, dispersion, etc., which enable them to effectively reduce the surface tension of water and improve wettability and permeability.

[0019] Aminosulfonic acid has a mild reaction, fast reaction speed and short reaction time during the reaction process, which helps to greatly improve production efficiency. The reaction product has high purity and does not require complicated post-processing processes, thus reducing production costs. In addition, compared with other sulfonating agents, such as sulfuric acid, it is less corrosive to equipment.

[0020] Polyethylene glycol has good water solubility and bonding properties, and can quickly wet the surface of dust particles to form a thin film. The polyethylene glycol molecular chain contains a large number of hydroxyl (-OH) functional groups, which can undergo various reactions and form hydrogen bonds with other substances, thus showing good bonding properties.

[0021] Vanillin has the advantages of good biocompatibility, easy degradation, and strong reactivity of aldehyde functional groups. Compared with some cross-linking agents, vanillin has less impact on the environment during use.

[0022] Sodium polyoxyethylene fatty alcohol ether sulfate is an anionic surfactant with strong wetting, emulsifying and detergency. Lauryl glucoside is a nonionic surfactant with low surface tension and strong wetting ability.

[0023] The sodium sulfate of fatty alcohol polyoxyethylene ether and the nonionic surfactant lauryl glucoside were compounded into a wetting agent, which showed obvious synergistic effect.

[0024] Reaction equation of the present invention is as follows:

[0025] (1) Sulfonation reaction

[0026]

[0027] (2) Cross-linking reaction - aldol condensation

[0028]

[0029] The nucleophilic site hydroxyl group (-OH) in the sophorolipid molecule is replaced by the sulfonic acid group (-SO3H) released by aminosulfonic acid. Due to the steric hindrance effect, the sulfonation reaction generally occurs at the hydroxymethyl position of the sophorolipid. The hydroxyl group (-OH) in the polyethylene glycol molecule reacts with the aldehyde group (-CHO) in the vanillin molecule to form an aldol condensation. The aldehyde group reacts with the hydroxyl group to form a hemiacetal intermediate, and then the intermediate reacts with another hydroxyl group to form a stable ether bond, thereby connecting the polyethylene glycol molecule to the vanillin molecule to form a stable chemical bond. As the reaction proceeds, more and more chemical bonds will be formed between the polyethylene glycol molecule and the vanillin molecule, thereby forming a three-dimensional cross-linked network structure. This cross-linked structure can improve the stability and mechanical strength of the material. Then there is a hydrogen bond between the hydroxyl groups of the sophorolipid and the polyethylene glycol, and the copolymerization of the two can play a synergistic role.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The present invention adopts a sulfonation method to modify the sophorolipid, introduces a sulfonic acid group at the hydroxyl position of the sophorolipid, and the sulfonated sophorolipid has stronger wettability, can more effectively reduce the surface tension of water, and improve the permeability and spreadability of the solution. The linear molecular structure is transformed into a three-dimensional network structure by the aldol condensation method, thereby significantly improving the heat resistance. Since a new chemical bond is established between macromolecules, the film-forming strength of the cross-linked polyethylene glycol is improved. The sulfonated sophorolipid and the cross-linked polyethylene glycol are copolymerized by hydrogen bonds, which can play a synergistic role and significantly enhance the high permeability and film-forming strength of the solution.

[0032] (2) The dust suppressant prepared by the present invention is polymerized from high molecular materials, and mainly locks the coal dust particles in the network structure of the polymer through the effects of capture, adsorption and agglomeration. There are also multiple ions between polymer molecules. Due to the high charge density, the coal dust particles can be quickly captured and firmly adsorbed, and it has strong permeability and anti-corrosion effects.

[0033] (3) The dust suppressant prepared by the present invention has strong penetrating power and can effectively wet coal dust. Compared with the monomer, the surface tension is greatly reduced, the contact angle is significantly reduced, and the wetting effect of coal dust can be increased. After the dust suppressant is sprayed on the coal dust, it quickly wets the dust to form a dense solidified film, condenses the coal dust particles, and makes the particles closely connected. Finally, the experiment shows that the final product has a strong wetting ability for dust and is not easy to cause secondary dust. The dust suppression rate reaches 98.29%, and the dust suppression effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a wetting effect diagram of the dust suppressant of the present invention.

[0035] Figure 2 It is a contact angle experimental diagram of the dust suppressant of the present invention.

[0036] Figure 3 It is a data diagram of dust suppression rate of the dust suppressant of the present invention.

[0037] Figure 4 A flow chart is prepared for the process of the present invention. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below through specific embodiments:

[0039] Example 1

[0040] Weigh 4g of sophorolipids and dissolve them in 50g of N,N-dimethylformamide, heat the water bath to 80°C, and stir to dissolve. Then, add 0.8g of aminosulfonic acid, heat the water bath to 80°C and react for 1h. After the reaction, remove the solvent with a rotary evaporator at 120rpm, dissolve the modified sophorolipids obtained above in 200g of distilled water, adjust the pH to 7, and obtain mixed solution I. Add 0.5g of polyethylene glycol to a beaker, add 300g of distilled water and heat to 80-90°C and stir until dissolved, add 0.125g of vanillin, heat to 60°C and continue to react for 1h to obtain mixed solution II, stir mixed solution I and mixed solution II magnetically at 150-250r / min, 60°C, and stop after the reaction for 30min to obtain mixed solution III. After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to neutral, and 0.7 g of a wetting agent is added to the mixed solution III. The wetting agent is prepared by compounding sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside in a mass ratio of 1:2, and a dust suppressant solution can be prepared.

[0041] Example 2

[0042] Weigh 4g of sophorolipids and dissolve them in 50g of N,N-dimethylacetamide, heat the water bath to 75°C, and stir to dissolve. Then, add 1.6g of aminosulfonic acid, heat the water bath to 75°C and react for 2h. After the reaction, remove the solvent with a rotary evaporator at 120rpm, dissolve the modified sophorolipids obtained above in 200g of distilled water, adjust the pH to 7, and obtain a mixed solution I. Add 0.9g of polyethylene glycol to a beaker, add 300g of distilled water and heat to 80-90°C and stir until dissolved, add 0.175g of vanillin, heat to 50°C and continue to react for 1h to obtain a mixed solution II, stir the mixed solution I and the mixed solution II magnetically at 150-250r / min, 60°C, and stop after the reaction for 1h to obtain a mixed solution III. After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to neutral, and 0.7 g of a wetting agent is added to the mixed solution III. The wetting agent is prepared by compounding sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside in a mass ratio of 1:2, and a dust suppressant solution can be prepared.

[0043] Example 3

[0044] Weigh 4g of sophorolipids and dissolve them in 50g of ethyl acetate, heat the water bath to 75°C, and stir to dissolve. Then, add 2.4g of aminosulfonic acid, heat the water bath to 75°C and react for 2h. After the reaction, remove the solvent with a rotary evaporator at 120rpm, dissolve the modified sophorolipids obtained above in 200g of distilled water, adjust the pH to 7, and obtain a mixed solution I. Add 0.7g of polyethylene glycol to a beaker, add 300g of distilled water and heat to 80-90°C and stir until dissolved, add 0.175g of vanillin, heat to 50°C and continue to react for 1h to obtain a mixed solution II, stir the mixed solution I and the mixed solution II magnetically at 150-250r / min, 60°C, and stop after the reaction for 30min to obtain a mixed solution III. After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to neutral, and 0.7 g of a wetting agent is added to the mixed solution III. The wetting agent is prepared by compounding sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside in a mass ratio of 1:2, and a dust suppressant solution can be prepared.

[0045] Example 4

[0046] Weigh 8g of sophorolipid and dissolve it in 50g of N,N-dimethylformamide, heat it to 80℃ in a water bath, and stir to dissolve. Then, add 0.8g of aminosulfonic acid, heat it in a water bath and keep it at 80℃ for 1h. After the reaction is completed, remove the solvent with a rotary evaporator at 120rpm, dissolve the modified sophorolipid obtained above in 200g of distilled water, adjust the pH to 7, and obtain mixed solution I. Add 0.9g of polyethylene glycol to a beaker, add 400g of distilled water and heat it to 80-90℃ and stir until dissolved, add 0.225g of vanillin, heat it to 70℃ and continue to react for 30min to obtain mixed solution II, stir mixed solution I and mixed solution II magnetically at 150-250r / min, 50℃, and stop the reaction for 1h to obtain mixed solution III. After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to be neutral, and 0.7 g of a wetting agent is added to the mixed solution III. The wetting agent is prepared by compounding sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside in a mass ratio of 2:3, and a dust suppressant solution can be prepared.

[0047] Example 5

[0048] Weigh 8g of sophorolipids and dissolve them in 90g of N,N-dimethylacetamide, heat the water bath to 80°C, and stir to dissolve. Then, add 1.6g of aminosulfonic acid, heat the water bath to 80°C and react for 1h. After the reaction, remove the solvent with a rotary evaporator at 120rpm, dissolve the modified sophorolipids obtained above in 200g of distilled water, adjust the pH to 7, and obtain a mixed solution I. Add 0.7g of polyethylene glycol to a beaker, add 300g of distilled water, heat to 80-90°C and stir until dissolved, add 0.125g of vanillin, heat to 70°C and continue to react for 30min to obtain a mixed solution II, stir the mixed solution I and the mixed solution II at 150-250r / min magnetic stirring, 60°C, and stop after the reaction for 30min to obtain a mixed solution III. After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to neutral, and 0.8 g of a wetting agent is added to the mixed solution III. The wetting agent is prepared by compounding sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside in a mass ratio of 2:3, and a dust suppressant solution can be prepared.

[0049] Example 6

[0050] Weigh 8g of sophorolipid and dissolve it in 80g of N,N-dimethylformamide, heat it to 80℃ in a water bath, and stir to dissolve. Then, add 2.4g of aminosulfonic acid, heat it in a water bath and keep it at 80℃ for 1h. After the reaction, remove the solvent with a rotary evaporator at 120rpm, dissolve the modified sophorolipid obtained above in 200g of distilled water, adjust the pH to 7, and obtain mixed solution I. Add 0.5g of polyethylene glycol to a beaker, add 300g of distilled water and heat it to 80-90℃ and stir until dissolved, add 0.175g of vanillin, heat it to 70℃ and continue to react for 30min to obtain mixed solution II, stir mixed solution I and mixed solution II magnetically at 150-250r / min, 60℃, and stop after the reaction for 30min to obtain mixed solution III. After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to be neutral, and 0.9 g of a wetting agent is added to the mixed solution III. The wetting agent is prepared by compounding sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside in a mass ratio of 2:3, and a dust suppressant solution can be prepared.

[0051] Example 7

[0052] Weigh 12g of sophorolipids and dissolve them in 90g of N,N-dimethylformamide, heat the water bath to 85°C, and stir to dissolve. Then, add 0.8g of aminosulfonic acid, heat the water bath to 85°C and react for 1h. After the reaction, remove the solvent with a rotary evaporator at 120rpm, dissolve the modified sophorolipids obtained above in 200g of distilled water, adjust the pH to 7, and obtain mixed solution I. Add 0.5g of polyethylene glycol to a beaker, add 300g of distilled water and heat to 80-90°C and stir until dissolved, add 0.125g of vanillin, heat to 60°C and continue to react for 1h to obtain mixed solution II, stir mixed solution I and mixed solution II magnetically at 150-250r / min, 60°C, and stop after the reaction for 30min to obtain mixed solution III. After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to be neutral, and 1 g of a wetting agent is added to the mixed solution III. The wetting agent is prepared by compounding sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside in a mass ratio of 1:4, and a dust suppressant solution can be prepared.

[0053] Example 8

[0054] Weigh 12g of sophorolipids and dissolve them in 90g of N,N-dimethylformamide, heat the water bath to 85°C, and stir to dissolve. Then, add 0.8g of aminosulfonic acid, heat the water bath to 85°C and react for 1h. After the reaction, remove the solvent with a rotary evaporator at 120rpm, dissolve the modified sophorolipids obtained above in 400g of distilled water, adjust the pH to 7, and obtain mixed solution I. Add 0.5g of polyethylene glycol to a beaker, add 300g of distilled water and heat to 80-90°C and stir until dissolved, add 0.225g of vanillin, heat to 60°C and continue to react for 1h to obtain mixed solution II, stir mixed solution I and mixed solution II magnetically at 150-250r / min, 60°C, and stop after the reaction for 30min to obtain mixed solution III. After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to neutral, and 1.1 g of a wetting agent is added to the mixed solution III. The wetting agent is prepared by compounding sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside in a mass ratio of 1:4, and a dust suppressant solution can be prepared.

[0055] Example 9

[0056] Weigh 12g of sophorolipids and dissolve them in 90g of ethyl acetate, heat the water bath to 85°C, and stir to dissolve. Then, add 2.4g of aminosulfonic acid, heat the water bath to 80°C and react for 60min. After the reaction, remove the solvent with a rotary evaporator at 120rpm, dissolve the modified sophorolipids obtained above in 800g of distilled water, adjust the pH to 7, and obtain a mixed solution I. Add 0.9g of polyethylene glycol to a beaker, add 500g of distilled water and heat to 80-90°C and stir until dissolved, add 0.125g of vanillin, heat to 60°C and continue to react for 1h to obtain a mixed solution II, stir the mixed solution I and the mixed solution II at 150-250r / min magnetic stirring, 60°C, and stop after the reaction for 30min to obtain a mixed solution III. After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to neutral, and 1.1 g of a wetting agent is added to the mixed solution III. The wetting agent is prepared by compounding sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside in a mass ratio of 1:4, and a dust suppressant solution can be prepared.

[0057] Comparative Example 1

[0058] Weigh 0.6 g of sophorolipid into a beaker, add 100 g of distilled water and stir to dissolve.

[0059] Comparative Example 2

[0060] Add 0.7 g of polyethylene glycol and 100 g of distilled water to a beaker, and heat with stirring until completely dissolved.

[0061] The effects of Examples 1-9 and Comparative Examples 1-3 were examined through experimental tests.

[0062] Comparative Example 3

[0063] The rest is the same as Example 1, except that the wetting agent is only fatty alcohol polyoxyethylene ether sodium sulfate.

[0064] Test 1

[0065] The dust suppressants prepared in Examples 1-9 and Comparative Examples 1-3 were tested for water retention and curing effect.

[0066] The test method is as follows: prepare 12 glass test tubes, add equal amounts of sieved and dried coal powder into the test tubes respectively, keep the coal powder at the same height in the glass tubes after vibration compaction, then add 5 mL of dust suppressant solution prepared in each embodiment and comparative example into the corresponding glass tubes respectively, start timing from the time when the dust suppressant starts dripping, set the time to 30 minutes, measure the penetration distance and calculate the permeability. Use a surface tension meter to measure the surface tension of different samples, and use an optical contact angle meter to measure the contact angle of different samples contacting the coal cake.

[0067] Test results such as Figure 1 and 2As shown, the penetration rates of the nine embodiments are significantly better than those of the three comparative examples, indicating that the modified dust suppressant significantly improves the wettability of coal dust. Example 1 has the lowest surface tension (23.27 mN / m), and Example 3 has the smallest contact angle (25.65°). However, Comparative Example 2 exhibits the largest surface tension (56.73 mN / m) and the largest contact angle (47.78°). In addition, the surface tension (34.59 mN / m) and contact angle (38.4°) of Comparative Example 3 are both inferior to those of the embodiments, which also verifies that the compounding effect is better than that of a single surfactant. Therefore, the dust suppressant of the present invention has strong permeability and can quickly wet dust.

[0068] Test 2

[0069] The dust suppression properties of the dust suppressants prepared in Examples 1-9 and Comparative Examples 1-3 were tested.

[0070] The test method is as follows: equal amounts of coal powder are placed in culture dishes, the wind speed is set to 10 m / s, and the concentrations of PM2.5 and PM10 at this time are detected and recorded with a handheld laser particle counter, which is recorded as C1. Equal amounts of Examples 1-9 and Comparative Examples 1-3 are uniformly sprayed in the culture dishes, and the concentrations of PM2.5 and PM10 after spraying are detected and recorded, which is recorded as C2. The dust suppression rate is calculated based on the concentration difference before and after. The calculation formula is as follows:

[0071]

[0072] η is the dust suppression efficiency (%), C1 is the initial concentration of PM2.5 and PM10 (μg / m 3 ), C2 is the concentration of PM2.5 and PM10 after spraying dust suppressant (μg / m 3 ).

[0073] Test results such as Figure 3 As shown, the suppression rates of coal dust sprayed on the samples of the nine embodiments all reached over 90%, among which the highest suppression rate among the embodiments was 98.29%, and the suppression rate of PM2.5 and PM10 in the environment of Comparative Example 1 was only 68.21%, indicating that the dust suppressant prepared by the present invention has excellent dust suppression performance.

[0074] It can be seen that the present invention can test the permeability, wettability and dust suppression of the prepared dust suppression material by designing different ratios, so as to judge the actual dust suppression effect of the dust suppression material.

[0075] In summary, the dust suppressant prepared by the present invention can effectively solve the technical problems of poor permeability of dust suppressants and general dust suppression effect in coal mine dust control, and has good social benefits and considerable economic benefits.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A method for preparing a highly permeable polymer dust suppressant, characterized in that: Prepare according to the following steps: (1) Sulfonation reaction: dissolve the sophorolipid in an organic solvent, raise the temperature to 75-85°C, stir and dissolve, then add aminosulfonic acid, maintain the temperature at 75-85°C until the reaction is complete, remove the solvent, dissolve the resulting modified sophorolipid in water, adjust the pH to 7, and obtain a mixed solution I; (2) Cross-linking copolymerization: Add polyethylene glycol to a container, add water, heat and stir until dissolved, add vanillin, and cross-link at 50-70°C until the reaction is complete to obtain mixed solution II, and mix mixed solution I and mixed solution II for copolymerization to obtain mixed solution III. (3) After the mixed solution III is cooled to room temperature, the pH of the solution is adjusted to be neutral, and a wetting agent is added to the mixed solution III to obtain a dust suppressant solution.

2. The method for preparing the highly permeable polymer dust suppressant according to claim 1, characterized in that: The organic solvent is one of N,N-dimethylformamide, N,N-dimethylacetamide and ethyl acetate.

3. The method for preparing the highly permeable polymer dust suppressant according to claim 1, characterized in that: The wetting agent is sodium fatty alcohol polyoxyethylene ether sulfate and lauryl glucoside, and the mass ratio is (0.5-2): (2-3).

4. The method for preparing the highly permeable polymer dust suppressant according to any one of claims 1 to 3, characterized in that: According to weight proportions, the amount of sophorolipid is 4-12 parts, aminosulfonic acid is 0.8-2.8 parts, polyethylene glycol is 0.5-0.9 parts, vanillin is 0.125-0.225 parts, and wetting agent is 0.7-1.1 parts.

5. The method for preparing the highly permeable polymer dust suppressant according to claim 4, characterized in that: In step (1), the reaction time after adding aminosulfonic acid is 1-2h.

6. The method for preparing the highly permeable polymer dust suppressant according to claim 5, characterized in that: In step (2), polyethylene glycol is added, water is added to 80-90°C, heated and stirred until dissolved, vanillin is added and reacted for 0.5h-1h to obtain mixed solution II.

7. The method for preparing the highly permeable polymer dust suppressant according to claim 6, characterized in that: In step (2), mixed solution I and mixed solution II are mixed and reacted at 50-60° C. for 0.5 h-1 h to obtain mixed solution III.

8. The method for preparing the highly permeable polymer dust suppressant according to claim 7, characterized in that: The water is distilled water.

9. A highly permeable polymer dust suppressant prepared by the method for preparing the highly permeable polymer dust suppressant according to any one of claims 1 to 8.

10. Use of the highly permeable polymer dust suppressant according to claim 9 in coal mine dust suppression.

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