Dynamic crosslinking network reinforced anti-spraying dust suppression material and preparation method thereof

Abstract

The application discloses a dynamic crosslinking network reinforced anti-spraying dust suppression material, and relates to the technical field of spray dust suppression, wherein the raw materials are selected according to the weight percentage ratio and include the following components: 3-6 parts of galactomannan; 2-5 parts of soybean protein isolate; 1-3 parts of butanedial; 2-3 parts of boric acid; 3-6 parts of sodium dodecyl sulfate; and 1-3 parts of glycerol. The application further discloses a preparation method of the dust suppression material. The galactomannan hydroxyl group and butanedial aldehyde group are subjected to acetal reaction, the soybean protein isolate amino group and butanedial aldehyde group are subjected to crosslinking reaction, a Schiff base structure is formed, and a crosslinking product I is generated. The boric acid and the crosslinking product I hydroxyl group form a new dynamic crosslinking boric acid ester bond, so that the mechanical properties of the material can be further improved. The prepared dynamic crosslinking network reinforced anti-spraying dust suppression material has multiple excellent properties such as dust suppression, film forming, anti-spraying, adhesion and degradation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spray dust suppression and dust suppression, and particularly relates to a dynamic cross-linking network reinforced anti-spraying type dust suppression material and a preparation method thereof. BACKGROUND

[0002] With the increasing intensity of open-pit mining, the problem of dust generated in various links is becoming increasingly serious. These dust not only seriously affects the surrounding environment and reduces air quality, but also threatens the service life of mine machinery, leading to an increase in the cost of maintenance and replacement of equipment. At the same time, dust poses a potential threat to the health of workers and surrounding residents, and may cause respiratory diseases, posing a risk to public health that cannot be ignored. Therefore, controlling and reducing dust generation has become an important issue that mining enterprises need to address.

[0003] Currently, dust suppression technologies commonly used by mining enterprises include wet dust suppression, spray dust suppression, and chemical dust suppression. Among them, the wet dust suppression method reduces the dust concentration in the air by watering, which has a significant effect in a short period of time, but the dust suppression effect can only last for a short time. Especially in dry and hot weather conditions, water evaporates easily, resulting in a rapid weakening of the dust suppression effect.

[0004] The spray dust suppression technology can more effectively combine with dust particles in the air by atomizing water into fine droplets, thereby reducing the dust concentration. Compared with traditional pure water spraying, dust suppression spraying can significantly enhance the inhibition effect on coal dust through the wetting and bonding effects of the dust suppression material itself, effectively reducing the workload caused by frequent spraying. However, in the actual application of coal mines, the complexity of environmental conditions often makes it difficult to use chemical dust suppressants. A large amount of spraying and strong wind flow environment make the dust suppression material have poor wind erosion resistance, and it is difficult to form a stable consolidation after spraying. These technical defects not only have a negative impact on environmental protection, but also restrict the widespread application of chemical dust suppressants.

[0005] Therefore, there is an urgent need to develop a high-efficiency dust suppression material that has excellent dust suppression performance and anti-spraying effect to solve the problems faced by current dust suppression technologies. SUMMARY

[0006] To solve the above technical problems, the present application discloses a dynamic cross-linking network reinforced anti-spraying type dust suppression material and a preparation method thereof. The prepared dynamic cross-linking network reinforced anti-spraying type dust suppression material exhibits excellent dust suppression and anti-spraying properties when sprayed on the surface of coal piles. The material can form a smooth and solid protective film on the surface of coal dust, effectively preventing the flying of coal dust and ensuring the stability and integrity of the coal pile surface. At the same time, this film also has excellent anti-spraying performance, enabling it to resist water flow impact and the influence of humid environments, thereby maintaining its long-term dust suppression effect.

[0007] To achieve the above object, the application adopts the following technical scheme:

[0008] A dynamic cross-linking network reinforced anti-spraying type dust suppression material, the selected raw materials include, in terms of weight percentage:

[0009] Galactomannan 3-6 parts;

[0010] Soybean protein isolate 2-5 parts;

[0011] Butanedialdehyde 1-3 parts;

[0012] Boric acid 2-3 parts;

[0013] Sodium dodecyl sulfate 3-6 parts;

[0014] Glycerol 1-3 parts;

[0015] The balance is distilled water.

[0016] Further, the mass concentration of butanedialdehyde selected is 5%.

[0017] The application also discloses a preparation method of a dynamic cross-linking network reinforced anti-spraying type dust suppression material, which specifically comprises the following steps:

[0018] S1, distilled water is added in a beaker, a certain amount of galactomannan is added into the beaker, and the galactomannan is dissolved under magnetic stirring at 80 DEG C to obtain a galactomannan aqueous solution;

[0019] S2, distilled water is added in another beaker, soybean protein isolate is added into the beaker and placed in a magnetic stirring water bath at 60 DEG C, and the soybean protein isolate is dissolved under magnetic stirring for 2 h to obtain a soybean protein isolate aqueous solution;

[0020] S3, the water bath is heated to 95 DEG C, the galactomannan aqueous solution and the soybean protein isolate aqueous solution are mixed, a certain amount of glacial acetic acid is added to adjust the solution to be acidic, a certain amount of butanedialdehyde is added, and the solution is continuously stirred for 2 h to obtain a modified solution I;

[0021] S4, the modified solution I is cooled to room temperature, a certain proportion of boric acid is added into the modified solution I, and the modified solution I is placed in a magnetic stirring water bath at 70 DEG C for reaction for 2 h to obtain a modified solution II;

[0022] S5, the modified solution II is cooled to room temperature, a certain amount of sodium hydroxide is added to adjust the solution to be neutral, a certain amount of sodium dodecyl sulfate and glycerol are added, and the solution is stirred under magnetic stirring at room temperature for 1 h to obtain a dynamic cross-linking network reinforced anti-spraying type dust suppression material.

[0023] Further, the selected raw materials include, in terms of weight percentage,

[0024] Galactomannan: Soy protein isolate: Butyraldehyde: Boric acid: Sodium dodecyl sulfate: Glycerol = 4:3:2:2:4:1.

[0025] Furthermore, during the preparation process, when the total volume of distilled water is 200ml, the weights of each raw material are as follows:

[0026] 0.8g of galactomannan;

[0027] 0.6g of soy protein isolate;

[0028] 0.4g of succinaldehyde;

[0029] Boric acid 0.4g;

[0030] Sodium dodecyl sulfate 0.8g;

[0031] Glycerin 0.2g.

[0032] Furthermore, during the preparation process, galactomannan and soy protein isolate undergo a cross-linking reaction to generate cross-linking product I, and the reaction equation is as follows: (1)

[0034]

[0035] In this reaction, galactomannan and soy protein isolate undergo a cross-linking reaction under the cross-linking of succinaldehyde. The hydroxyl groups of galactomannan react with the aldehyde groups of succinaldehyde to form an acetal, while the amino groups of soy protein isolate react with the aldehyde groups of succinaldehyde to form a Schiff base structure. Succinaldehyde acts as a bridge to connect the two, generating cross-linking product I.

[0036] Crosslinking product I reacts with borax in a dynamic crosslinking reaction to generate crosslinking product II. The reaction equation is as follows:

[0037] (2>

[0038] In the crosslinking reaction between boric acid and crosslinking product I, boric acid and the hydroxyl groups of crosslinking product I form new dynamic crosslinked borate ester bonds, which further improves the mechanical properties of the material.

[0039] The raw materials selected for preparing this dynamically cross-linked network-reinforced anti-spray dust suppression material have the following characteristics:

[0040] Glycine max is a legume plant that is widely cultivated for its seeds. The seeds of Glycine max are rich in protein and are used as a source of protein in the food industry. Glycine max is also used as a source of protein in the production of animal feed and in the production of biofuels. Glycine max is also used as a source of protein in the production of biodegradable plastics.

[0041] Glycine max is a legume plant that is widely cultivated for its seeds. The seeds of Glycine max are rich in protein and are used as a source of protein in the food industry. Glycine max is also used as a source of protein in the production of animal feed and in the production of biofuels. Glycine max is also used as a source of protein in the production of biodegradable plastics.

[0042] Glycine max is a legume plant that is widely cultivated for its seeds. The seeds of Glycine max are rich in protein and are used as a source of protein in the food industry. Glycine max is also used as a source of protein in the production of animal feed and in the production of biofuels. Glycine max is also used as a source of protein in the production of biodegradable plastics.

[0043] Glycine max is a legume plant that is widely cultivated for its seeds. The seeds of Glycine max are rich in protein and are used as a source of protein in the food industry. Glycine max is also used as a source of protein in the production of animal feed and in the production of biofuels. Glycine max is also used as a source of protein in the production of biodegradable plastics.

[0044] Glycine max is a legume plant that is widely cultivated for its seeds. The seeds of Glycine max are rich in protein and are used as a source of protein in the food industry. Glycine max is also used as a source of protein in the production of animal feed and in the production of biofuels. Glycine max is also used as a source of protein in the production of biodegradable plastics.

[0045] Glycine max is a legume plant that is widely cultivated for its seeds. The seeds of Glycine max are rich in protein and are used as a source of protein in the food industry. Glycine max is also used as a source of protein in the production of animal feed and in the production of biofuels. Glycine max is also used as a source of protein in the production of biodegradable plastics.

[0046] The benefits of the present invention are,

[0047] (1) Galactomannan molecules have a large number of hydroxyl groups, which can undergo acetal reaction with aldehyde groups. At the same time, due to the presence of amino groups on soybean protein isolate that can react with aldehyde groups, galactomannan and soybean protein isolate can be cross-linked in a bridging form by butanedialdehyde containing two aldehyde groups. Due to the strong film-forming property of soybean protein isolate itself, the film-forming property of the material is greatly improved, and a strong and tough protective film can be formed on the surface of coal dust. In addition, this cross-linking reaction not only enhances the mechanical properties and stability of the material, but also improves its water resistance and oxidation resistance, so that the finally generated composite material can also maintain good performance in harsh environments. Due to the natural properties of galactomannan and soybean protein isolate, the material has excellent biocompatibility and safety, and is therefore particularly suitable for application in coal mine environments, especially in inhibiting coal dust or other particulate matter, which can effectively reduce the impact of dust on the environment and human health.

[0048] (2) The dynamic cross-linking of borate ester bonds further improves the dust suppression capacity of the material, and at the same time enables the material to have a certain self-repairing ability. This ability can enable the material to maintain the integrity of the structure in rainy, humid and other environments, greatly improving the applicability and dust suppression duration of the dust suppression material. With the dynamic cross-linking of borate ester bonds, the material can continue to effectively fix dust particles when encountering adverse weather conditions, avoiding the blowing of dust again by the wind, leading to secondary pollution.

[0049] (3) The raw materials used in the present application are easily available, low in cost, degradable, simple to prepare, and more suitable for industrialized production.

[0050] (4) The dynamic cross-linking network reinforced anti-spraying dust suppression material prepared by the present application has excellent dust suppression performance and film-forming property, can effectively capture and adhere to small dust particles, and prevent them from drifting with the wind, thereby significantly reducing the dust concentration in the air. In addition, the material can also form a strong protective film on the surface of coal, resist the influence of water and external force, and ensure the persistent protection of the underlying structure. When the material is affected by water spraying or humid environment, its anti-spraying property enables the film layer to effectively resist water flow impact and maintain its structural integrity, preventing the attenuation of the dust suppression effect.

[0051] In summary, the dynamic cross-linking network reinforced anti-spraying dust suppression material prepared by the present application has dust suppression, film-forming, anti-spraying, adhesion, degradability and other excellent properties. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 is a process flow diagram of the present application;

[0053] Figure 2 is a graph of the anti-spraying test results in the embodiment of the present application;

[0054] Figure 3 A hardness test result graph for the embodiment of the present application. DETAILED DESCRIPTION

[0055] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0056] A dynamic cross-linking network reinforced anti-spraying dust suppression material, raw materials selected according to weight percentage, including:

[0057] Galactomannan 3-6 parts;

[0058] Soybean protein isolate 2-5 parts;

[0059] Butanedial 1-3 parts;

[0060] Boric acid 2-3 parts;

[0061] Sodium dodecyl sulfate 3-6 parts;

[0062] Glycerol 1-3 parts;

[0063] The balance is distilled water.

[0064] Example 1

[0065] A preparation method of a dynamic cross-linking network reinforced anti-spraying dust suppression material, the process flow is as shown in Figure 1 The specific steps are as follows:

[0066] (1) 100 mL of distilled water was added to a beaker, 0.6 g of galactomannan was added to the beaker, and was dissolved under magnetic stirring at 80℃ to obtain a galactomannan aqueous solution;

[0067] (2) 100 mL of distilled water was added to another beaker, 0.4 g of soybean protein isolate was added and placed in a magnetic stirring water bath at 60℃, and was stirred magnetically for 2 h to dissolve to obtain a soybean protein isolate aqueous solution;

[0068] (3) The water bath was heated to 95℃, the two aqueous solutions were mixed, a certain amount of glacial acetic acid was added to adjust the solution to be acidic, 0.2 g of butanedial was added, and the magnetic stirring was continued for 2 h to obtain a modified solution I;

[0069] (4) The modified solution I is cooled to room temperature in a water bath, 0.2g of boric acid is added to the modified solution I, and it is placed in a magnetic stirring water bath at 70°C for 2h to obtain modified solution II;

[0070] (5) The modified solution II is cooled to room temperature, a certain amount of sodium hydroxide is added to adjust the solution to neutral, and 0.8g of sodium dodecyl sulfate and 0.2g of glycerol are added, and magnetic stirring is carried out at room temperature for 1h to obtain a dynamic cross-linking network reinforced anti-spraying type dust suppression material.

[0071] Example 2

[0072] A preparation method of a dynamic cross-linking network reinforced anti-spraying type dust suppression material, the specific steps are as follows:

[0073] (1) In a beaker, 100mL of distilled water is added, 0.6g of galactomannan is added to the beaker, and magnetic stirring is carried out at 80°C to dissolve, to obtain a galactomannan aqueous solution;

[0074] (2) In another beaker, 100mL of distilled water is added, 0.6g of soybean protein isolate is added, and it is placed in a magnetic stirring water bath at 60°C, and magnetic stirring is carried out for 2h to dissolve, to obtain a soybean protein isolate aqueous solution;

[0075] (3) The water bath is heated to 95°C, the two aqueous solutions are mixed, a certain amount of glacial acetic acid is added to adjust the solution to be acidic, and then 0.3g of butanedial is added, and magnetic stirring is continued for 2h to obtain a modified solution I;

[0076] (4) The modified solution I is cooled to room temperature in a water bath, 0.3g of boric acid is added to the modified solution I, and it is placed in a magnetic stirring water bath at 70°C for 2h to obtain a modified solution II;

[0077] (5) The modified solution II is cooled to room temperature, a certain amount of sodium hydroxide is added to adjust the solution to neutral, and 0.8g of sodium dodecyl sulfate and 0.2g of glycerol are added, and magnetic stirring is carried out at room temperature for 1h to obtain a dynamic cross-linking network reinforced anti-spraying type dust suppression material.

[0078] Example 3

[0079] A preparation method of a dynamic cross-linking network reinforced anti-spraying type dust suppression material, the specific steps are as follows:

[0080] (1) In a beaker, 100mL of distilled water is added, 0.6g of galactomannan is added to the beaker, and magnetic stirring is carried out at 80°C to dissolve, to obtain a galactomannan aqueous solution;

[0081] (2) In another beaker, 100 mL of distilled water was added, 0.8 g of soybean protein isolate was added and placed in a magnetic stirring water bath at 60°C, and stirred magnetically for 2 h to dissolve, to obtain a soybean protein isolate aqueous solution;

[0082] (3) The water bath was warmed to 95°C, the two aqueous solutions were mixed, and a certain amount of glacial acetic acid was added to adjust the solution to be acidic, then 0.4 g of butanedial was added, and the magnetic stirring was continued for 2 h to obtain modified solution I;

[0083] (4) The modified solution I was cooled to room temperature in a water bath, 0.4 g of boric acid was added to the modified solution I, and it was placed in a magnetic stirring water bath at 70°C for reaction for 2 h to obtain modified solution II;

[0084] (5) The modified solution II was cooled to room temperature, a certain amount of sodium hydroxide was added to adjust the solution to be neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added, and the magnetic stirring was continued at room temperature for 1 h to obtain a dynamic cross-linking network reinforced anti-spray type dust suppression material.

[0085] Example 4

[0086] A preparation method of a dynamic cross-linking network reinforced anti-spray type dust suppression material, the specific steps are as follows:

[0087] (1) In a beaker, 100 mL of distilled water was added, 0.8 g of soybean protein isolate was added and placed in a magnetic stirring water bath at 60°C, and stirred magnetically for 2 h to dissolve, to obtain a soybean protein isolate aqueous solution;

[0088] (2) In another beaker, 100 mL of distilled water was added, 0.8 g of soybean protein isolate was added and placed in a magnetic stirring water bath at 60°C, and stirred magnetically for 2 h to dissolve, to obtain a soybean protein isolate aqueous solution;

[0089] (3) The water bath was warmed to 95°C, the two aqueous solutions were mixed, and a certain amount of glacial acetic acid was added to adjust the solution to be acidic, then 0.4 g of butanedial was added, and the magnetic stirring was continued for 2 h to obtain modified solution I;

[0090] (4) The modified solution I was cooled to room temperature in a water bath, 0.4 g of boric acid was added to the modified solution I, and it was placed in a magnetic stirring water bath at 70°C for reaction for 2 h to obtain modified solution II;

[0091] (5) The modified solution II was cooled to room temperature, a certain amount of sodium hydroxide was added to adjust the solution to be neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added, and the magnetic stirring was continued at room temperature for 1 h to obtain a dynamic cross-linking network reinforced anti-spray type dust suppression material.

[0092] Example 5

[0093] A preparation method of a dynamic cross-linking network reinforced anti-spraying type dust suppression material, the specific steps are as follows:

[0094] (1) 100 mL of distilled water was added to a beaker, 0.8 g of galactomannan was added to the beaker, and magnetic stirring was performed at 80°C to dissolve, obtaining a galactomannan aqueous solution;

[0095] (2) 100 mL of distilled water was added to another beaker, 0.6 g of soybean protein isolate was added, and placed in a magnetic stirring water bath at 60°C, magnetic stirring for 2 h to dissolve, obtaining a soybean protein isolate aqueous solution;

[0096] (3) The water bath was heated to 95°C, the two aqueous solutions were mixed, and a certain amount of glacial acetic acid was added to adjust the solution to be acidic, then 0.4 g of butanedial was added, and magnetic stirring was continued for 2 h, obtaining modified solution I;

[0097] (4) The modified solution I was cooled to room temperature, 0.2 g of boric acid was added to the modified solution I, and it was placed in a magnetic stirring water bath at 70°C for 2 h to obtain modified solution II;

[0098] (5) The modified solution II was cooled to room temperature, a certain amount of sodium hydroxide was added to adjust the solution to be neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added, and magnetic stirring was performed at room temperature for 1 h, obtaining a dynamic cross-linking network reinforced anti-spraying type dust suppression material.

[0099] Example 6

[0100] A preparation method of a dynamic cross-linking network reinforced anti-spraying type dust suppression material, the specific steps are as follows:

[0101] (1) 100 mL of distilled water was added to a beaker, 0.8 g of galactomannan was added to the beaker, and magnetic stirring was performed at 80°C to dissolve, obtaining a galactomannan aqueous solution;

[0102] (2) 100 mL of distilled water was added to another beaker, 0.8 g of soybean protein isolate was added, and placed in a magnetic stirring water bath at 60°C, magnetic stirring for 2 h to dissolve, obtaining a soybean protein isolate aqueous solution;

[0103] (3) The water bath was heated to 95°C, the two aqueous solutions were mixed, and a certain amount of glacial acetic acid was added to adjust the solution to be acidic, then 0.2 g of butanedial was added, and magnetic stirring was continued for 2 h, obtaining modified solution I;

[0104] (4) The modified solution I was cooled to room temperature, 0.2 g of boric acid was added to the modified solution I, and it was placed in a magnetic stirring water bath at 70°C for 2 h to obtain modified solution II;

[0105] (5) The modified solution II is cooled to room temperature, a certain amount of sodium hydroxide is added to adjust the solution to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol are added, and magnetic stirring is carried out at room temperature for 1 h to obtain a dynamic cross-linking network reinforced anti-spray type dust suppression material.

[0106] Example 7

[0107] A preparation method of a dynamic cross-linking network reinforced anti-spray type dust suppression material, the specific steps are as follows:

[0108] (1) 100 mL of distilled water is added to a beaker, 1 g of galactomannan is added to the beaker, and magnetic stirring is carried out at 80°C until it is dissolved to obtain a galactomannan aqueous solution;

[0109] (2) 100 mL of distilled water is added to another beaker, 0.4 g of soybean protein isolate is added, and the beaker is placed in a magnetic stirring water bath at 60°C, and magnetic stirring is carried out for 2 h until it is dissolved to obtain a soybean protein isolate aqueous solution;

[0110] (3) The water bath is heated to 95°C, the two aqueous solutions are mixed, a certain amount of glacial acetic acid is added to adjust the solution to be acidic, and then 0.4 g of butanedial is added, and magnetic stirring is continued for 2 h to obtain a modified solution I;

[0111] (4) The modified solution I is cooled to room temperature in a water bath, 0.3 g of boric acid is added to the modified solution I, and it is placed in a magnetic stirring water bath at 70°C and reacted for 2 h to obtain a modified solution II;

[0112] (5) The modified solution II is cooled to room temperature, a certain amount of sodium hydroxide is added to adjust the solution to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol are added, and magnetic stirring is carried out at room temperature for 1 h to obtain a dynamic cross-linking network reinforced anti-spray type dust suppression material.

[0113] Example 8

[0114] A preparation method of a dynamic cross-linking network reinforced anti-spray type dust suppression material, the specific steps are as follows:

[0115] (1) 100 mL of distilled water is added to a beaker, 1 g of galactomannan is added to the beaker, and magnetic stirring is carried out at 80°C until it is dissolved to obtain a galactomannan aqueous solution;

[0116] (2) 100 mL of distilled water is added to another beaker, 0.6 g of soybean protein isolate is added, and the beaker is placed in a magnetic stirring water bath at 60°C, and magnetic stirring is carried out for 2 h until it is dissolved to obtain a soybean protein isolate aqueous solution;

[0117] (3) The water bath was heated to 95℃, the two aqueous solutions were mixed, and a certain amount of glacial acetic acid was added to adjust the solution to be acidic, then 0.2g of butanedial was added, and magnetic stirring was continued for 2h to obtain modified solution I;

[0118] (4) The modified solution I was cooled to room temperature in a water bath, 0.4g of boric acid was added to the modified solution I, and it was placed in a magnetic stirring water bath at 70℃ for reaction for 2h to obtain modified solution II;

[0119] (5) The modified solution II was cooled to room temperature, a certain amount of sodium hydroxide was added to adjust the solution to be neutral, and 0.8g of sodium dodecyl sulfate and 0.2g of glycerol were added, and magnetic stirring was carried out at room temperature for 1h to obtain a dynamic cross-linked network reinforced anti-spray type dust suppression material.

[0120] Example 9

[0121] A preparation method of a dynamic cross-linked network reinforced anti-spray type dust suppression material, the specific steps are as follows:

[0122] (1) In a beaker, 100mL of distilled water was added, 1g of galactomannan was added to the beaker, and dissolved under magnetic stirring at 80℃ to obtain a galactomannan aqueous solution;

[0123] (2) In another beaker, 100mL of distilled water was added, 0.8g of soybean protein isolate was added and placed in a magnetic stirring water bath at 60℃, and magnetic stirring was carried out for 2h until dissolved to obtain a soybean protein isolate aqueous solution;

[0124] (3) The water bath was heated to 95℃, the two aqueous solutions were mixed, and a certain amount of glacial acetic acid was added to adjust the solution to be acidic, then 0.3g of butanedial was added, and magnetic stirring was continued for 2h to obtain modified solution I;

[0125] (4) The modified solution I was cooled to room temperature in a water bath, 0.2g of boric acid was added to the modified solution I, and it was placed in a magnetic stirring water bath at 70℃ for reaction for 2h to obtain modified solution II;

[0126] (5) The modified solution II was cooled to room temperature, a certain amount of sodium hydroxide was added to adjust the solution to be neutral, and 0.8g of sodium dodecyl sulfate and 0.2g of glycerol were added, and magnetic stirring was carried out at room temperature for 1h to obtain a dynamic cross-linked network reinforced anti-spray type dust suppression material.

[0127] Comparative Example 1

[0128] 0.6g of galactomannan and 0.8g of sodium dodecyl sulfate were dissolved in 200mL of distilled water to obtain the material corresponding to Comparative Example 1.

[0129] Comparative Example 2

[0130] 0.6g of soybean protein isolate and 0.8g of sodium dodecyl sulfate were dissolved in 200mL of distilled water to obtain the material corresponding to Comparative Example 2.

[0131] The materials prepared in Examples 1-9 and Comparative Examples 1-2 were subjected to the anti-spraying test and the hardness test, respectively, as follows.

[0132] The anti-spraying test method was as follows:

[0133] Coal samples with the same initial mass were sprayed with the same mass of the materials prepared in Examples 1-9 and Comparative Examples 1-2, respectively, and then dried in a vacuum drying oven (50℃ for 24h). The coal samples were then subjected to the spraying test for 2min and 4min, respectively, and then dried again in a vacuum drying oven (50℃ for 24h) to obtain the mass after spraying. The anti-spraying efficiency was calculated based on the mass loss relative to the initial mass, and the results are shown in Table 1. Figure 2 The dust suppression efficiency of Examples 1-9 was above 95% and 91% after spraying for 2min and 4min, respectively, while the highest dust suppression efficiency of Comparative Examples 1 and 2 was 72.8% and 65.3%, respectively.

[0134] This is because the dust suppression material prepared in the present application can form a tough and smooth protective film on the surface of coal dust, which can resist the invasion of raindrops and prevent the secondary lifting of dust, thereby improving the dust suppression efficiency.

[0135] The hardness test method was as follows:

[0136] Coal samples with the same initial mass were sprayed with the same mass of the materials prepared in Examples 1-9 and Comparative Examples 1-2, respectively, and then dried in a vacuum drying oven (50℃ for 24h). The hardness of the coal samples was then tested using a Shore hardness tester, and the results are shown in Table 2. Figure 3 The surface hardness of the coal samples of Comparative Examples 1 and 2 was 61HA and 66HA, respectively, which was significantly lower than the surface hardness of the coal samples of Examples, indicating that the solidification effect of Examples was better than that of the comparative samples.

[0137] This is mainly due to the excellent adhesion of galactomannan and the film-forming property of soybean protein isolate, which enables effective adhesion and solidification of coal dust, thereby forming a protective layer and significantly improving the hardness of the coal layer after dust suppression, effectively preventing the generation of secondary dust lifting.

[0138] The dynamic cross-linked network reinforced anti-spraying type dust suppression material prepared in the present application exhibits excellent dust suppression and anti-spraying properties when sprayed on the surface of a coal pile. This material can form a smooth and tough protective film on the surface of coal dust, effectively suppressing the flying of coal dust and ensuring the stability and integrity of the coal pile surface. At the same time, this film also has excellent anti-spraying performance, enabling it to resist water flow impact and the influence of humid environments, thereby maintaining its long-term dust suppression effect.

[0139] Of course, the above description is not a limitation on the present application, and the present application is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the spirit and scope of the present application should also be included in the protection scope of the present application.

Claims

1. A method for preparing a dynamically cross-linked network-reinforced anti-spray dust suppression material, characterized in that, The selected raw materials, by weight, include: 3-6 parts of galactomannan; 2-5 parts soy protein isolate; 1-3 parts of succinyl aldehyde; 2-3 parts boric acid; 3-6 parts of sodium dodecyl sulfate; 1-3 parts glycerin; The remainder is distilled water; The specific steps are as follows: S1. Add distilled water to a beaker, add a certain amount of galactomannan to the beaker, and stir magnetically at 80°C to dissolve it, thus obtaining a galactomannan aqueous solution. S2, add distilled water to another beaker, add soy protein isolate and place in a 60°C magnetically stirred water bath, stir magnetically for 2 hours until dissolved, to obtain an aqueous solution of soy protein isolate; S3. Heat the water bath to 95°C, mix the galactomannan aqueous solution and the soy protein isolate aqueous solution, add a certain amount of glacial acetic acid to adjust the solution to acidity, add a certain amount of succinaldehyde, and continue to stir magnetically for 2 hours to obtain modified solution I. S4, cool modified solution I to room temperature in a water bath, add a certain proportion of boric acid to modified solution I, and place it in a magnetically stirred water bath at 70℃ for 2 hours to obtain modified solution II; S5. Cool the modified solution II to room temperature, add a certain amount of sodium hydroxide to adjust the acidity and alkalinity of the solution to neutral, and add a certain amount of sodium dodecyl sulfate and glycerin. Stir magnetically at room temperature for 1 hour to obtain a dynamically cross-linked network-reinforced anti-spray dust suppression material.

2. The preparation method of a dynamically cross-linked network-reinforced anti-spray dust suppression material as described in claim 1, characterized in that, The selected succinaldehyde concentration was 5%.

3. The preparation method of a dynamically cross-linked network-reinforced anti-spray dust suppression material as described in claim 2, characterized in that, The selected raw materials, by weight, include galactomannan: soy protein isolate: succinate: boric acid: sodium dodecyl sulfate: glycerol = 4:3:2:2:4:

1.

4. The preparation method of a dynamically cross-linked network-reinforced anti-spray dust suppression material as described in claim 3, characterized in that, During the preparation process, when the total volume of distilled water is 200ml, the weights of each raw material are as follows: 0.8g of galactomannan; 0.6g of soy protein isolate; 0.4g of succinaldehyde; Boric acid 0.4g; Sodium dodecyl sulfate 0.8g; Glycerin 0.2g.

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