A new anti-freezing and high-bonding property dustproof material, a preparation method and application thereof

Abstract

The application discloses a novel anti-freezing and high-bonding property dust suppression material and a preparation method and application thereof, and is prepared according to the following steps: (1) taking a knot cold glue, putting into a container, adding water, mixing, fully stirring, and adding an alkali solution to adjust pH to 9-10, dropwise adding an epoxy chloropropane to react for 1-2 hours, after the reaction is finished, neutralizing pH to 6-7 with a hydrochloric acid solution, and obtaining a mixed solution I; (2) adding water and polyethylene glycol into another container, stirring and heating to completely dissolve, adding citric acid and p-toluenesulfonic acid to react at 90-95 DEG C to obtain a mixed solution II, fully mixing the mixed solution I and the mixed solution II, adjusting pH of the solution to neutral, heating to 90-95 DEG C to react for 1.5-2 hours to obtain a mixed solution III; (3) cooling the mixed solution III to room temperature, adding a surfactant and a water-retaining agent into the mixed solution III, and obtaining a dust suppressant solution. The dust suppressant solution has excellent water-retaining performance and plasticity, and has anti-freezing and high-bonding properties.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust suppressants, in particular to a novel anti-freezing and high-adhesion dust suppression material, a preparation method thereof and application thereof. BACKGROUND

[0002] Mining, loading, transportation and unloading are the main links of dust emission in coal mining practice and processing. According to relevant research, the dust generated in these processes accounts for about 90% of the total amount of mine dust. Dust not only pollutes the surrounding environment and destroys the ecological system, but also harms the health of workers and increases the incidence of pneumoconiosis.

[0003] At present, the measures to control dust pollution in mining areas are roughly divided into traditional water spraying dust suppression and new chemical dust removal. In winter in the north, the average temperature is generally below 10 degrees Celsius or even lower. Conventional water spraying cannot effectively deal with the low-temperature environment, and after spraying, the road is seriously iced, which significantly affects the dust suppression effect. Most of the current dust suppressants still have the problems of single function, low dust suppression efficiency and environmental pollution. For example, most chemical dust suppressants show poor adhesion and are prone to secondary dust pollution. Therefore, it is urgent to invent a new dust suppressant that can effectively suppress dust and has certain anti-freezing ability for the problem of low temperature in open-pit coal mines. SUMMARY

[0004] In view of the deficiencies in the prior art, the first purpose of the present application is to provide a preparation method of a novel anti-freezing and high-adhesion dust suppression material, the second purpose is to provide a novel anti-freezing and high-adhesion dust suppression material prepared therefrom, and the third purpose is to provide an application thereof. The present application has excellent water retention performance and plasticity, and has anti-freezing and high-adhesion properties.

[0005] To achieve the above-mentioned first purpose, the present application adopts the following technical solution: a preparation method of a novel anti-freezing and high-adhesion dust suppression material, characterized by the following steps:

[0006] (1) Take the gellan gum, put it into a container, mix with water, stir thoroughly, heat to 50-60℃, adjust the pH to 9-10 with lye, add dropwise epoxy chloropropane, react for 1-2h, after the reaction is completed, neutralize the pH to 6-7 with hydrochloric acid solution, and obtain a mixed solution I;

[0007] (2) Add water and polyethylene glycol to another container, stir and heat to completely dissolve, add citric acid and p-toluenesulfonic acid, heat to 90-95℃ to obtain a mixed solution II, mix the mixed solution I and the mixed solution II thoroughly, adjust the pH of the solution to neutral, heat to 90-95℃ and react for 1.5-2h to obtain a mixed solution III;

[0008] (3) cooling the mixed solution III to room temperature, adding surfactant and water-retaining agent into the mixed solution III, thereby obtaining the dust suppressant solution.

[0009] In the above scheme, the adding amount of each substance is as follows: 5-9 parts of kappa carrageenan, 1.5-2 parts of epoxy chloropropane, 2.5-5 parts of polyethylene glycol, 1.4-4.4 parts of citric acid, 1-5 parts of p-toluene sulfonic acid, 2-6 parts of water-retaining agent, and 8-12 parts of surfactant.

[0010] In the above scheme, the water-retaining agent is glycerol.

[0011] In the above scheme, the wetting agent is sodium alpha-alkenyl sulfonate.

[0012] In the above scheme, the water is distilled water, and the adding amount is 1500-3000 parts.

[0013] In the above scheme, the alkali solution is sodium hydroxide solution, and the mass concentration is 5%-10%.

[0014] In the above scheme, the mass concentration of the hydrochloric acid solution is 5%-10%.

[0015] In the above scheme, in step (2), after adding citric acid and p-toluene sulfonic acid, the reaction is carried out for 1-2 hours.

[0016] The second object of the application is achieved by a preparation method of the novel anti-freezing and high-adhesion dust suppressant material.

[0017] The third object of the application is achieved by the application of the novel anti-freezing and high-adhesion dust suppressant material in coal mine dust suppression.

[0018] In the application, the following are selected:

[0019] Kappa carrageenan is a linear polysaccharide with safe and non-toxic ingredients, and has good water retention and freeze-thaw stability, and still maintains the dust suppression performance in low temperature environment.

[0020] Polyethylene glycol has good biocompatibility, contains a large number of hydroxyl groups in the molecular chain, and can be chemically modified in various ways. In addition, polyethylene glycol has high chemical stability and is not prone to decomposition and deterioration, which enables its application in dust suppressants to remain effective for a long time.

[0021] Epoxy chloropropane, as a crosslinking agent, can undergo nucleophilic addition reaction with nucleophilic sites in the molecule to form C-O-C bond, increase the stability and durability of the material, and has high reaction activity and wide application range in the crosslinking process.

[0022] Citric acid is an environmentally friendly product, which can be converted into carbon dioxide and water under the action of water and microorganisms, and will not pollute the environment, and is a good chemical raw material.

[0023] Alpha-alkenyl sodium sulfonate is an anionic surfactive agent, which shows cationic property in acidic medium and non-ionic property in alkaline medium, so that it can maintain good performance at different pH values, and alpha-alkenyl sodium sulfate can significantly reduce the critical micelle concentration of solution and improve wettability.

[0024] The reaction formula of each step of the application is as follows:

[0025] (1) Crosslinking reaction

[0026]

[0027] (2) Esterification reaction

[0028]

[0029] (3) Hydrogen bond double network structure

[0030]

[0031] GG-OH represents gellan gum, and CLGG-OH represents crosslinked gellan gum, and the gellan gum molecule contains multiple hydroxyl groups, so the product of step (3) still exists in the form of HO-CLGG.

[0032] The epoxy group of epichlorohydrin reacts with the active group hydroxyl group in gellan gum, opens the epoxy ring, and forms C-O-C, and with the progress of crosslinking reaction, the molecular chains of gellan gum are connected through the crosslinking points formed by epichlorohydrin, and finally a three-dimensional network structure is formed, which enhances the stability and durability of the material, and makes the network structure of gellan gum more stable.

[0033] The hydroxyl group of polyethylene glycol and the carboxyl group of citric acid undergo esterification reaction under the catalysis of catalyst p-toluenesulfonic acid, and through intermolecular dehydration reaction, water molecules are released, ester bond (-COO-) is formed, and modified product polyethylene glycol citrate is obtained.

[0034] The last two intermediate products form non-covalent interaction through hydrogen bond, and the molecular chains are intertwined to form a double network structure with synergistic enhancement effect.

[0035] Compared with the prior art, the application has the following beneficial effects:

[0036] (1) The cross-linking method is used to modify the K-Carrageenan in the application, the epoxy group of epoxy chloropropane is ring-opening, and the cross-linking points are formed between the molecular chains of K-Carrageenan, so that the network structure of K-Carrageenan is more stable, and the esterification reaction occurs between polyethylene glycol and citric acid to generate a polar ester bond (-COO-). The high-density network structure and the introduction of the ester bond make the product have excellent water retention performance and plasticity.

[0037] (2) The cross-linked K-Carrageenan and polyethylene glycol citric acid ester are copolymerized, and then the sodium alpha-alkenyl sulfonate is compounded, so that the dust suppression material with antifreeze and high adhesion is finally obtained.

[0038] (4) The dust suppressant prepared by the application contains hydroxyl and carboxyl groups, which can produce electrostatic effect with nitrogen-containing functional groups in coal and hydrogen bond with oxygen-containing functional groups in coal, thereby enhancing the adsorption of the dust suppressant to coal dust and forming a hard solidified layer. Moreover, glycerol can play a water-locking effect. After the dust suppressant is treated, water molecules form hydrogen bonds with hydrophilic groups in the double network structure and are firmly adsorbed on the network structure. The double network structure enhances the agglomeration effect between coal dust particles, and the crust is more compact and firm. The solidified layer can still effectively suppress dust in low-temperature and severe cold mine areas, and the application can provide a feasible solution for dust control of dust suppressants in severe cold mine areas.

[0039] (5) The dust suppressant prepared by the application can play a certain binding effect on coal dust, and form a hard and compact solidified layer on the surface of coal dust. After the dust suppressant is sprayed for a period of time, the dust suppression rate of PM10 reaches 98.25%, and the cumulative hardness loss is only 10.21%. Compared with the solidified layer of K-Carrageenan solution and surfactant coal dust, the frost resistance of the solidified layer of the dust suppressant is obviously improved, the evaporation of water is delayed, and the dust suppression period is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 The figure is for antifreeze test comparison of examples and comparative examples.

[0041] Figure 2 The figure is for dust suppression rate and water retention rate of examples and comparative examples.

[0042] Figure 3 The figure is a process flow chart of the application. DETAILED DESCRIPTION

[0043] The application will be further described in detail through specific embodiments:

[0044] Example 1

[0045] Step one: take 0.5g of gellan gum, put it into a three-necked flask, add 100ml of distilled water, mix, fully stir at 200r / min, heat to 50℃ in a constant temperature water bath, adjust pH to 10 with 5% sodium hydroxide solution, add 0.16g of epichlorohydrin dropwise, keep at 50℃, react for 2h, after the reaction is completed, neutralize the pH to 6-7 with 5% hydrochloric acid solution, obtain mixture I.

[0046] Step two: add 100ml of distilled water and 0.25g of polyethylene glycol to a beaker, stir and heat to 70℃ until completely dissolved, then add 0.14g of citric acid, 0.1g of p-toluenesulfonic acid, heat to 90℃ in a water bath and react for 1h to obtain mixture II, fully mix mixture I and mixture II, adjust the pH of the solution to neutral, heat to 90℃ in a water bath and react for 1.5h to obtain mixture III.

[0047] Step three: cool mixture III to room temperature, add 0.8g of surfactant and 0.2g of water-retaining agent to mixture III to obtain the dust suppressant solution.

[0048] Example 2

[0049] Step one: take 0.5g of gellan gum, put it into a three-necked flask, add 100ml of distilled water, mix, fully stir at 200r / min, heat to 50℃ in a constant temperature water bath, adjust pH to 10 with 5% sodium hydroxide solution, add 0.16g of epichlorohydrin dropwise, keep at 50℃, react for 2h, after the reaction is completed, neutralize the pH to 6-7 with 5% hydrochloric acid solution, obtain mixture I.

[0050] Step two: add 100ml of distilled water and 0.25g of polyethylene glycol to a beaker, stir and heat to 70℃ until completely dissolved, then add 0.14g of citric acid, 0.1g of p-toluenesulfonic acid, heat to 90℃ in a water bath and react for 1h to obtain mixture II, fully mix mixture I and mixture II, adjust the pH of the solution to neutral, heat to 90℃ in a water bath and react for 1.5h to obtain mixture III.

[0051] Step three: cool mixture III to room temperature, add 0.8g of surfactant and 0.2g of water-retaining agent to mixture III to obtain the dust suppressant solution.

[0052] Example 3

[0053] Step one: take 0.5g of gellan gum, put it into a three-necked flask, add 100ml of distilled water, mix, fully stir at 200r / min, heat to 60℃ in a constant temperature water bath, adjust pH to 10 with 10% sodium hydroxide solution, add 0.18g of epichlorohydrin dropwise, keep at 60℃, react for 1h, after the reaction, neutralize pH to 6-7 with 10% hydrochloric acid solution, obtain mixture I.

[0054] Step two: add 200ml of distilled water and 0.35g of polyethylene glycol into a beaker, stir and heat to 70℃ until completely dissolved, then add 0.44g of citric acid, 0.1g of p-toluenesulfonic acid, heat to 95℃ in a water bath and react for 1h to obtain mixture II, mix mixture I and mixture II well, adjust the pH of the solution to neutral, heat to 95℃ in a water bath and react for 1.5h to obtain mixture III.

[0055] Step three: cool mixture III to room temperature, add 0.8g of surfactant and 0.2g of water-retaining agent to mixture III to obtain the dust suppressant solution.

[0056] Example 4

[0057] Step one: take 0.7g of gellan gum, put it into a three-necked flask, add 100ml of distilled water, mix, fully stir at 200r / min, heat to 50℃ in a constant temperature water bath, adjust pH to 10 with 5% sodium hydroxide solution, add 0.16g of epichlorohydrin dropwise, keep at 50℃, react for 1h, after the reaction, neutralize pH to 6-7 with 5% hydrochloric acid solution, obtain mixture I.

[0058] Step two: add 200ml of distilled water and 0.45g of polyethylene glycol into a beaker, stir and heat to 70℃ until completely dissolved, then add 0.44g of citric acid, 0.3g of p-toluenesulfonic acid, heat to 90℃ in a water bath and react for 1h to obtain mixture II, mix mixture I and mixture II well, adjust the pH of the solution to neutral, heat to 90℃ in a water bath and react for 2h to obtain mixture III.

[0059] Step three: cool mixture III to room temperature, add 1g of surfactant and 0.4g of water-retaining agent to mixture III to obtain the dust suppressant solution.

[0060] Example 5

[0061] Step one: take 0.7g of gellan gum, put it into a three-necked flask, add 100ml of distilled water, mix, fully stir at 200r / min, heat to 50℃ in a constant temperature water bath, adjust pH to 10 with 5% sodium hydroxide solution, add 0.18g of epichlorohydrin dropwise, keep at 50℃, react for 2h, after the reaction, neutralize the pH to 6-7 with 5% hydrochloric acid solution, obtain mixture I.

[0062] Step two: add 200ml of distilled water and 0.35g of polyethylene glycol into a beaker, stir and heat to 70℃ until completely dissolved, then add 0.14g of citric acid and 0.3g of p-toluenesulfonic acid, heat to 95℃ in a water bath for 1h to obtain mixture II, mix mixture I and mixture II thoroughly, adjust the pH of the solution to neutral, heat to 90℃ in a water bath for 2h to obtain mixture III.

[0063] Step three: cool mixture III to room temperature, add 1g of surfactant and 0.4g of water-retaining agent to mixture III, and the dust suppressant solution is obtained.

[0064] Example 6

[0065] Step one: take 0.7g of gellan gum, put it into a three-necked flask, add 100ml of distilled water, mix, fully stir at 200r / min, heat to 60℃ in a constant temperature water bath, adjust pH to 10 with 5% sodium hydroxide solution, add 0.2g of epichlorohydrin dropwise, keep at 60℃, react for 1h, after the reaction, neutralize the pH to 6-7 with 5% hydrochloric acid solution, obtain mixture I.

[0066] Step two: add 200ml of distilled water and 0.25g of polyethylene glycol into a beaker, stir and heat to 70℃ until completely dissolved, then add 0.29g of citric acid and 0.3g of p-toluenesulfonic acid, heat to 90℃ in a water bath for 1h to obtain mixture II, mix mixture I and mixture II thoroughly, adjust the pH of the solution to neutral, heat to 90℃ in a water bath for 1.5h to obtain mixture III.

[0067] Step three: cool mixture III to room temperature, add 1g of surfactant and 0.4g of water-retaining agent to mixture III, and the dust suppressant solution is obtained.

[0068] Example 7

[0069] Step one: take 0.9g of gellan gum, put it into a three-necked flask, add 100ml of distilled water, mix, fully stir at 200r / min, heat to 60℃ in a constant temperature water bath, adjust pH to 10 with 5% sodium hydroxide solution, add 0.16g of epichlorohydrin dropwise, keep at 60℃, react for 1h, after the reaction is completed, neutralize the pH to 6-7 with 5% hydrochloric acid solution, obtain mixture I.

[0070] Step two: add 200ml of distilled water and 0.35g of polyethylene glycol to a beaker, stir and heat to 70℃ until completely dissolved, then add 0.29g of citric acid, 0.5g of p-toluenesulfonic acid, heat to 90℃ in a water bath and react for 2h to obtain mixture II, fully mix mixture I and mixture II, adjust the pH of the solution to neutral, heat to 90℃ in a water bath and react for 1.5h to obtain mixture III.

[0071] Step three: cool mixture III to room temperature, add 1.2g of surfactant and 0.6g of water-retaining agent to mixture III to obtain the dust suppressant solution.

[0072] Example 8

[0073] Step one: take 0.9g of gellan gum, put it into a three-necked flask, add 100ml of distilled water, mix, fully stir at 200r / min, heat to 50℃ in a constant temperature water bath, adjust pH to 10 with 5% sodium hydroxide solution, add 0.18g of epichlorohydrin dropwise, keep at 50℃, react for 1h, after the reaction is completed, neutralize the pH to 6-7 with 5% hydrochloric acid solution, obtain mixture I.

[0074] Step two: add 200ml of distilled water and 0.25g of polyethylene glycol to a beaker, stir and heat to 70℃ until completely dissolved, then add 0.44g of citric acid, 0.5g of p-toluenesulfonic acid, heat to 90℃ in a water bath and react for 1h to obtain mixture II, fully mix mixture I and mixture II, adjust the pH of the solution to neutral, heat to 90℃ in a water bath and react for 1.5h to obtain mixture III.

[0075] Step three: cool mixture III to room temperature, add 1.2g of surfactant and 0.6g of water-retaining agent to mixture III to obtain the dust suppressant solution.

[0076] Example 9

[0077] Step one: take 0.9g of gellan gum, put it into a three-necked flask, add 100mL of distilled water, mix, stir at 200r / min, heat to 50℃ in a constant temperature water bath, adjust the pH to 10 with 5% sodium hydroxide solution, add 0.2g of epichlorohydrin dropwise, keep at 50℃, react for 1h, after the reaction is completed, neutralize the pH to 6-7 with 5% hydrochloric acid solution, obtain mixed solution I.

[0078] Step two: add 200mL of distilled water and 0.5g of polyethylene glycol to a beaker, stir and heat to 70℃ until completely dissolved, then add 0.44g of citric acid and 0.5g of p-toluenesulfonic acid, heat to 90℃ in a water bath and react for 1h to obtain mixed solution II, mix mixed solution I and mixed solution II thoroughly, adjust the pH of the solution to neutral, heat to 90℃ in a water bath and react for 1.5h to obtain mixed solution III.

[0079] Step three: cool mixed solution III to room temperature, add 1.2g of surfactant and 0.6g of water-retaining agent to mixed solution III to obtain the dust suppressant solution.

[0080] Comparative example 1

[0081] Add 1g of sodium α-olefin sulfonate to a beaker, stir and heat until completely dissolved.

[0082] Comparative example 2

[0083] Take 0.7g of gellan gum and place it in a beaker, add 200mL of distilled water, heat to dissolve in a water bath.

[0084] Test the effect of examples 5-9 and comparative examples 1 and 2. The following tests are carried out according to the standard TB / T3210.1-2020 to prepare coal samples, and the coal samples are sieved to 200 mesh using a standard sieve. Dry the coal samples in a drying oven at (50±2)℃ for 4 hours to remove moisture, then take them out and place them at room temperature for 2 hours.

[0085] Test example 1

[0086] The dust suppressants prepared in examples 5-9 and comparative examples 1 and 2 are tested for freeze resistance as follows.

[0087] The test method is as follows: equal amounts of coal powder are placed in petri dishes, the same mass of examples 5-9 and comparative examples 1 and 2 is sprayed on them, and they are placed in a drying oven and heated for 12h, with the high temperature set at 50℃, then they are placed in an industrial air conditioner and frozen at low temperature for 12h, with the low temperature set at -35℃, for 5 cycles, finally the hardness values obtained after freezing are compared with the initial values to calculate the hardness loss rate. The hardness of the dried and solidified layer is measured with a Shore hardness tester, and each sample is tested 3 times to obtain the average value.

[0088] The test results are as followsFigure 1 As shown, Figure 1 The freeze-thaw resistance test data showed that the hardness of the cured layer decreased with the increase of freeze-thaw cycles. With the continuous increase of freeze-thaw cycles, the cumulative hardness loss of Comparative Example 1 was 24.72%, exhibiting the worst freeze-thaw resistance. After 5 cycles, the cumulative hardness loss of Example 5 was only 10.21%. This indicates that temperature changes have a relatively small impact on the hardness of the cured layer of the dust suppression materials prepared in Examples 5-9, demonstrating that the performance of the cured layer remains relatively stable under temperature variations of -35 to 50℃, meeting the freeze-thaw resistance requirements of the frigid mining environment.

[0089] Experimental Example 2

[0090] The dust suppressants prepared in Examples 5-9 and Comparative Examples 1 and 2 were tested for dust suppression and water retention.

[0091] The test method is as follows: the solutions of Examples 5-9 are sprayed onto the coal powder samples respectively, and the solutions of Comparative Examples 1-2 are sprayed as control groups. A monitoring point is set up in both the experimental area and the control area to detect the dust concentration before and after.

[0092] Equal amounts of coal powder were weighed and placed in petri dishes. Solutions from Examples 5-9 and Comparative Examples 1 and 2 were sprayed onto the dishes, and the dishes were placed in a constant temperature incubator to eliminate interference from external factors. The temperature was set at 20°C, and the samples were removed and weighed every 30 minutes. The mass difference between the sample and the previous time period was calculated. The ratio of the difference to the initial total mass is the water loss rate for the corresponding time period.

[0093] The test results are as follows Figure 2 As shown, the dust suppression test in Experiment 2 showed that the samples sprayed with Examples 5-9 exhibited a dust suppression rate exceeding 95%, with Example 8 showing suppression rates of 97.64% and 98.25% for PM2.5 and PM10, respectively, significantly improving the dust suppression rate compared to the comparative examples. The water loss rate of each dust suppressant group increased with time. Examples 4, 8, and 9 showed relatively low overall water loss rates, while Comparative Example 1 had the highest water loss rate. This is because the network structure formed by the macromolecular chains allows the chemical dust suppressant to better retain its stored moisture, resulting in a relatively low overall water loss rate and less moisture loss.

[0094] In summary, the dust suppressant produced by this invention can effectively suppress dust, solve the technical problem of the general dust solidification effect in cold mining areas, and has good social benefits and considerable economic benefits.

[0095] Finally, it is to be explained that the above embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A method for preparing a dust suppression material with antifreeze and high adhesion properties, characterized in that, Prepare according to the following steps: (1) Weigh out gellan gum, put it in a container, add water and mix, stir thoroughly, heat to 50-60℃, adjust the pH to 9-10 with alkaline solution, add epichlorohydrin dropwise, react for 1-2 hours, after the reaction is complete, neutralize the pH to 6-7 with hydrochloric acid solution to obtain mixture I; (2) Add water and polyethylene glycol to another container, stir and heat until completely dissolved, add citric acid and p-toluenesulfonic acid and heat to 90-95℃ to react and obtain mixture II. Mix mixture I and mixture II thoroughly, adjust the pH of the solution to neutral, heat to 90-95℃ and react for 1.5-2 hours to obtain mixture III; (3) Cool the mixture III to room temperature, and add surfactant and water-retaining agent to the mixture III to obtain the dust suppressant solution; according to the weight parts, the amount of each substance added is: gellan gum 5-9 parts, epichlorohydrin 1.5-2 parts, polyethylene glycol 2.5-5 parts, citric acid 1.4-4.4 parts, p-toluenesulfonic acid 1-5 parts, water-retaining agent 2-6 parts, surfactant 8-12 parts; the water-retaining agent is glycerol; the surfactant is sodium α-olefin sulfonate.

2. The method for preparing the antifreeze and highly adhesive dust suppression material according to claim 1, characterized in that: Distilled water should be used.

3. The method for preparing the antifreeze and highly adhesive dust suppression material according to claim 2, characterized in that: The alkaline solution is a sodium hydroxide solution with a mass concentration of 5%-10%.

4. The method for preparing the antifreeze and highly adhesive dust suppression material according to claim 3, characterized in that: The mass concentration of the hydrochloric acid solution is 5%-10%.

5. The method for preparing the antifreeze and highly adhesive dust suppression material according to claim 4, characterized in that: In step (2), citric acid and p-toluenesulfonic acid are added and reacted for 1-2 hours.

6. A dust suppression material with antifreeze and high adhesion properties prepared by the preparation method of the dust suppression material with antifreeze and high adhesion properties according to any one of claims 1-5.

7. The application of the antifreeze and high-adhesion dust suppression material as described in claim 6 in coal mine dust reduction.

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