Dynamic cross-linked network reinforced spray-resistant dust suppression material and preparation method thereof

Abstract

The invention discloses a dynamic cross-linked network reinforced spray-resistant dust suppression material, and relates to the technical field of spray dust suppression and dust suppression, the selected raw materials comprise, by weight, 3-6 parts of galactomannan; 2-5 parts of soybean protein isolate; 1 to 3 parts of butanedialdehyde; 2-3 parts of boric acid; 3-6 parts of lauryl sodium sulfate; 1-3 parts of glycerol; the invention also discloses a preparation method of the dust suppression material. The preparation method disclosed by the invention has the beneficial effects that hydroxyl of galactomannan and aldehyde group of butanedialdehyde are subjected to aldolization, amino of soybean protein isolate and aldehyde group of butanedialdehyde are subjected to cross-linking reaction, a Schiff base structure is formed, and a cross-linking product I is generated; boric acid and hydroxyl of the cross-linked product I form a new dynamic cross-linked boric acid ester bond, so that the mechanical property of the material is further improved; the prepared dynamic cross-linked network reinforced spray-resistant dust suppression material has various excellent properties such as dust suppression, film forming property, spray resistance, adhesion and degradability.

Description

Technical Field

[0001] The invention relates to the technical field of spray dust reduction and dust suppression, and in particular to a dynamic cross-linked network reinforced anti-spray type dust suppression material and a preparation method thereof. Background Art

[0002] As the intensity of open-pit mining continues to increase, the dust problem generated in each link is becoming increasingly serious. These dusts not only seriously affect the surrounding environment and reduce air quality, but also threaten the service life of mining machinery, resulting in increased maintenance and replacement costs. At the same time, dust poses a potential hazard to the health of workers and surrounding residents, may cause respiratory diseases, and bring risks to public health that cannot be ignored. Therefore, controlling and reducing the generation of dust has become an important issue that mining companies need to solve urgently.

[0003] At present, the 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 sprinkling water. Although it is effective in a short period of time, its dust suppression effect can only last for a short time. Especially in dry and hot weather conditions, water evaporates easily, causing the dust suppression effect to weaken rapidly.

[0004] Spray dust suppression technology can more effectively combine with dust particles in the air by atomizing water into fine droplets, thereby reducing dust concentration. Compared with traditional pure water spray, dust suppression spray can significantly enhance the suppression effect on coal dust through the wetting and bonding effect 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 the use of chemical dust suppressants difficult. A large amount of spraying and strong wind flow environment make dust suppression materials less effective in resisting wind erosion, and it is difficult to form 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, it is urgent to develop an efficient dust suppression material with both excellent dust suppression performance and anti-spraying effect to solve the problems faced by current dust suppression technology. Summary of the invention

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

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A dynamic cross-linked network reinforced anti-spray dust suppression material, the raw materials selected are calculated by weight percentage and include:

[0009] 3-6 parts of galactomannan;

[0010] 2-5 portions of isolated soy protein;

[0011] 1-3 parts of succinaldehyde;

[0012] 2-3 parts of boric acid;

[0013] 3-6 parts of sodium lauryl sulfate;

[0014] 1-3 parts of glycerin;

[0015] The balance is distilled water.

[0016] Furthermore, the mass concentration of succinaldehyde selected is 5%.

[0017] The present invention also discloses a method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material, which specifically comprises the following steps:

[0018] S1, adding distilled water into a beaker, adding a certain amount of galactomannan into the beaker, and dissolving it under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0019] S2, add distilled water to another beaker, add the soy protein isolate thereto and place in a magnetic stirring water bath at 60°C, magnetically stir for 2 hours until dissolved, to obtain a soy protein isolate aqueous solution;

[0020] S3, heating the water bath to 95°C, mixing the galactomannan aqueous solution and the soy protein isolate aqueous solution, adding a certain amount of glacial acetic acid to adjust the solution to acidity, adding a certain amount of succinaldehyde, and continuing magnetic stirring for 2 hours to obtain modified solution I;

[0021] S4, cooling the modified solution I to room temperature in a water bath, adding a certain proportion of boric acid to the modified solution I, and placing it in a magnetic stirring water bath at 70°C for 2 hours to obtain a modified solution II;

[0022] S5, cooling the modified solution II to room temperature, adding a certain amount of sodium hydroxide to adjust the solution pH to neutral, and adding a certain amount of sodium dodecyl sulfate and glycerol, magnetically stirring at room temperature for 1 hour to obtain a dynamic cross-linked network reinforced anti-spray dust suppression material.

[0023] Furthermore, the raw materials selected include, by weight percentage,

[0024] Galactomannan: soy protein isolate: succinic dialdehyde: boric acid: sodium lauryl sulfate: glycerol = 4:3:2:2:4:1.

[0025] Furthermore, during the preparation process, when the total amount of distilled water is 200 ml, the weights of the raw materials are:

[0026] Galactomannan 0.8g;

[0027] Soy protein isolate 0.6g;

[0028] Succinaldehyde 0.4 g;

[0029] Boric acid 0.4 g;

[0030] Sodium dodecyl sulfate 0.8 g;

[0031] Glycerol 0.2g.

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

[0034]

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

[0036] The cross-linked product Ⅰ reacts with borax to form the cross-linked product Ⅱ, and the reaction equation is: (2>

[0038] In the cross-linking reaction between boric acid and cross-linking product I, boric acid and the hydroxyl group of cross-linking product I form a new dynamic cross-linking borate ester bond, which can further improve the mechanical properties of the material.

[0039] In the process of preparing the dynamic cross-linked network reinforced anti-spray dust suppression material, the raw materials selected have the following characteristics:

[0040] Galactomannan is a natural plant polysaccharide commonly found in the seeds of leguminous plants. It is widely used because of its environmentally friendly and renewable characteristics. The main chain of galactomannan is composed of β-1,4-d-mannose, and the side chain is composed of α-1-d-galactose. This structure makes galactomannan have good water solubility and viscosity. In dust suppression applications, this viscosity and water solubility enable galactomannan to quickly capture and firmly adsorb fine dust particles, and has strong wetting and coagulation capabilities.

[0041] Soy protein isolate is a naturally occurring biodegradable protein with environmental and sustainability advantages. It has significant hydration due to the polar groups on its peptide chain backbone, which means it can absorb, retain and swell water. In addition, soy protein isolate provides foaming, high viscosity, film formation, plasticity and elasticity, enabling it to capture coal dust particles and form a solidified layer on its surface after settling and wetting the coal dust. Its own plasticity gives the material an excellent dust suppression life.

[0042] Succinaldehyde is a dialdehyde compound that can react with amino groups to form imines (Schiff bases) through a condensation reaction. At the same time, succinaldehyde can also undergo condensation reactions with hydroxyl groups; hydroxyl groups can act as nucleophiles and react with the carbonyl group of succinaldehyde to form the acetal form of alcohol.

[0043] Boric acid is an inorganic compound that has the ability to react with hydroxyl (-OH) groups. This crosslinking enables the originally linear polymer chains to form a three-dimensional network through the bridging effect of boric acid, thereby changing the physical properties of the polymer, such as enhancing mechanical strength and thermal stability.

[0044] Sodium dodecyl sulfate is usually a white solid or powder, easily soluble in water to form foam. Its solution is anionic and has good emulsification and detergency capabilities. It is a commonly used surfactant.

[0045] Glycerin is a colorless, odorless, viscous liquid. It is a trihydric alcohol and is widely used as a humectant, solvent and thickener in the cosmetics, food and pharmaceutical industries. Glycerin has good hydrophilicity and biocompatibility and can effectively retain moisture. Therefore, it can effectively increase the effective duration of dust suppression in the dust suppression field.

[0046] The beneficial effects of the present invention are:

[0047] (1) Galactomannan molecules carry a large number of hydroxyl groups, which can react with aldehyde groups to form acetals. At the same time, due to the presence of amino groups on soy protein isolate that can react with aldehyde groups, galactomannan and soy protein isolate can be cross-linked in the form of bridges by succinaldehyde containing two aldehyde groups. Due to the strong film-forming properties of soy protein isolate itself, the film-forming properties of the material are 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 antioxidant properties, so that the final composite material can maintain good performance in harsh environments. Due to the natural characteristics of galactomannan and soy protein isolate, the material has excellent biocompatibility and safety, and is therefore particularly suitable for use in coal mine environments, especially in suppressing coal dust or other particulate matter, and can effectively reduce the impact of dust on the environment and human health.

[0048] (2) The dynamic cross-linking of borate bonds further improves the dust suppression ability of the material, and at the same time gives the material a certain self-repairing ability, which enables the material to maintain structural integrity even in rainy and humid environments, greatly improving the applicability and dust suppression duration of the dust suppression material. With the dynamically cross-linked borate bonds, the material can continue to effectively fix dust particles when encountering adverse weather conditions, preventing the dust from being blown up by the wind again and causing secondary pollution.

[0049] (3) The raw materials used in the present invention are easily available, low in cost, degradable, simple to prepare, and easier to industrialize.

[0050] (4) The dynamic cross-linked network reinforced anti-spray dust suppression material prepared by the present invention has excellent dust suppression performance and film-forming properties, can effectively capture and adhere to tiny dust particles, prevent them from being blown away by the wind, and thus significantly reduce the dust concentration in the air; in addition, the material can also form a solid protective film on the surface of the coal to resist the influence of moisture and external forces, and ensure the long-term protection of the underlying structure. When the material is affected by water spray or humid environment, its anti-spray property enables the film layer to effectively resist the impact of water flow, maintain its structural integrity, and prevent the attenuation of the dust suppression effect.

[0051] In summary, the dynamically cross-linked network reinforced anti-spraying dust suppression material prepared by the present invention has multiple excellent properties such as dust suppression, film-forming property, anti-spraying property, adhesion, and degradability. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the process flow of the present invention;

[0053] Figure 2 This is a diagram of the anti-spray test results in an embodiment of the present invention;

[0054] Figure 3 This is a diagram of hardness test results in an embodiment of the present invention. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] A dynamic cross-linked network reinforced anti-spray dust suppression material, the raw materials selected are calculated by weight percentage and include:

[0057] 3-6 parts of galactomannan;

[0058] 2-5 portions of isolated soy protein;

[0059] 1-3 parts of succinaldehyde;

[0060] 2-3 parts of boric acid;

[0061] 3-6 parts of sodium lauryl sulfate;

[0062] 1-3 parts of glycerin;

[0063] The balance is distilled water.

[0064] Example 1

[0065] A method for preparing a dynamic cross-linked network reinforced anti-spray dust suppression material, the process flow is as follows Figure 1 As shown, the specific steps are as follows:

[0066] (1) Add 100 mL of distilled water to a beaker, add 0.6 g of galactomannan to the beaker, and dissolve under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0067] (2) Add 100 mL of distilled water to another beaker, add 0.4 g of soy protein isolate thereto, and place in a 60° C. magnetic stirring water bath, and stir magnetically for 2 h until dissolved, to obtain a soy protein isolate aqueous solution;

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

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

[0070] (5) The modified solution II was cooled to room temperature, a certain amount of sodium hydroxide was added to adjust the solution pH to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added. The solution was magnetically stirred at room temperature for 1 h to obtain a dynamically cross-linked network reinforced anti-spray dust suppression material.

[0071] Example 2

[0072] A method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material, the specific steps are as follows:

[0073] (1) Add 100 mL of distilled water to a beaker, add 0.6 g of galactomannan to the beaker, and dissolve under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0074] (2) Add 100 mL of distilled water to another beaker, add 0.6 g of soy protein isolate thereto, and place in a 60° C. magnetic stirring water bath, and stir magnetically for 2 h until dissolved, to obtain a soy protein isolate aqueous solution;

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

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

[0077] (5) The modified solution II was cooled to room temperature, a certain amount of sodium hydroxide was added to adjust the solution pH to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added. The solution was magnetically stirred at room temperature for 1 h to obtain a dynamically cross-linked network reinforced anti-spray dust suppression material.

[0078] Example 3

[0079] A method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material, the specific steps are as follows:

[0080] (1) Add 100 mL of distilled water to a beaker, add 0.6 g of galactomannan to the beaker, and dissolve under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0081] (2) Add 100 mL of distilled water to another beaker, add 0.8 g of soy protein isolate thereto, and place in a 60° C. magnetic stirring water bath, and stir magnetically for 2 h until dissolved, to obtain a soy protein isolate aqueous solution;

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

[0083] (4) Cooling the modified solution I to room temperature in a water bath, adding 0.4 g of boric acid to the modified solution I, and placing it in a magnetic stirring water bath at 70° C. for 2 h to obtain a 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 pH to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added. The solution was magnetically stirred at room temperature for 1 h to obtain a dynamically cross-linked network reinforced anti-spray dust suppression material.

[0085] Example 4

[0086] A method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material, the specific steps are as follows:

[0087] (1) Add 100 mL of distilled water to a beaker, add 0.8 g of galactomannan to the beaker, and dissolve under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0088] (2) Add 100 mL of distilled water to another beaker, add 0.4 g of soy protein isolate thereto, and place in a 60° C. magnetic stirring water bath, and stir magnetically for 2 h until dissolved, to obtain a soy protein isolate aqueous solution;

[0089] (3) The water bath was heated to 95°C, the two aqueous solutions were mixed, a certain amount of glacial acetic acid was added to adjust the solution to acidity, 0.3 g of succinaldehyde was added, and magnetic stirring was continued for 2 h to obtain modified solution I;

[0090] (4) Cooling the modified solution I to room temperature in a water bath, adding 0.4 g of boric acid to the modified solution I, and placing it in a magnetic stirring water bath at 70° C. for 2 h to obtain a 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 pH to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added. The solution was magnetically stirred at room temperature for 1 h to obtain a dynamically cross-linked network reinforced anti-spray dust suppression material.

[0092] Example 5

[0093] A method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material, the specific steps are as follows:

[0094] (1) Add 100 mL of distilled water to a beaker, add 0.8 g of galactomannan to the beaker, and dissolve under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0095] (2) Add 100 mL of distilled water to another beaker, add 0.6 g of soy protein isolate thereto, and place in a 60° C. magnetic stirring water bath, and stir magnetically for 2 h until dissolved, to obtain a soy protein isolate aqueous solution;

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

[0097] (4) Cooling the modified solution I to room temperature in a water bath, adding 0.2 g of boric acid to the modified solution I, and placing it in a magnetic stirring water bath at 70° C. for 2 h to obtain a 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 pH to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added. The solution was magnetically stirred at room temperature for 1 h to obtain a dynamically cross-linked network reinforced anti-spray dust suppression material.

[0099] Example 6

[0100] A method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material, the specific steps are as follows:

[0101] (1) Add 100 mL of distilled water to a beaker, add 0.8 g of galactomannan to the beaker, and dissolve under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0102] (2) Add 100 mL of distilled water to another beaker, add 0.8 g of soy protein isolate thereto, and place in a 60° C. magnetic stirring water bath, and stir magnetically for 2 h until dissolved, to obtain a soy protein isolate aqueous solution;

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

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

[0105] (5) The modified solution II was cooled to room temperature, a certain amount of sodium hydroxide was added to adjust the solution pH to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added. The solution was magnetically stirred at room temperature for 1 h to obtain a dynamically cross-linked network reinforced anti-spray dust suppression material.

[0106] Example 7

[0107] A method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material, the specific steps are as follows:

[0108] (1) Add 100 mL of distilled water to a beaker, add 1 g of galactomannan to the beaker, and dissolve under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0109] (2) Add 100 mL of distilled water to another beaker, add 0.4 g of soy protein isolate thereto, and place in a 60° C. magnetic stirring water bath, and stir magnetically for 2 h until dissolved, to obtain a soy protein isolate aqueous solution;

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

[0111] (4) Cooling the modified solution I to room temperature in a water bath, adding 0.3 g of boric acid to the modified solution I, and placing it in a magnetic stirring water bath at 70° C. for 2 h to obtain a modified solution II;

[0112] (5) The modified solution II was cooled to room temperature, a certain amount of sodium hydroxide was added to adjust the solution pH to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added. The solution was magnetically stirred at room temperature for 1 h to obtain a dynamically cross-linked network reinforced anti-spray dust suppression material.

[0113] Example 8

[0114] A method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material, the specific steps are as follows:

[0115] (1) Add 100 mL of distilled water to a beaker, add 1 g of galactomannan to the beaker, and dissolve under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0116] (2) Add 100 mL of distilled water to another beaker, add 0.6 g of soy protein isolate thereto, and place in a 60° C. magnetic stirring water bath, and stir magnetically for 2 h until dissolved, to obtain a soy protein isolate aqueous solution;

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

[0118] (4) Cooling the modified solution I to room temperature in a water bath, adding 0.4 g of boric acid to the modified solution I, and placing it in a magnetic stirring water bath at 70° C. for 2 h to obtain a 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 pH to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added. The solution was magnetically stirred at room temperature for 1 h to obtain a dynamically cross-linked network reinforced anti-spray dust suppression material.

[0120] Example 9

[0121] A method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material, the specific steps are as follows:

[0122] (1) Add 100 mL of distilled water to a beaker, add 1 g of galactomannan to the beaker, and dissolve under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution;

[0123] (2) Add 100 mL of distilled water to another beaker, add 0.8 g of soy protein isolate thereto, and place in a 60° C. magnetic stirring water bath, and stir magnetically for 2 h until dissolved, to obtain a soy protein isolate aqueous solution;

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

[0125] (4) Cooling the modified solution I to room temperature in a water bath, adding 0.2 g of boric acid to the modified solution I, and placing it in a magnetic stirring water bath at 70° C. for 2 h to obtain a 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 pH to neutral, and 0.8 g of sodium dodecyl sulfate and 0.2 g of glycerol were added. The solution was magnetically stirred at room temperature for 1 h to obtain a dynamically cross-linked network reinforced anti-spray dust suppression material.

[0127] Comparative Example 1

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

[0129] Comparative Example 2

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

[0131] The materials obtained in Examples 1-9 and Comparative Examples 1-2 were subjected to spray resistance test and hardness test respectively.

[0132] The spray resistance test method is:

[0133] Coal samples with the same initial mass were sprayed with the same mass of materials prepared in Examples 1-9 and Comparative Examples 1-2, and after being dried in a vacuum drying oven (50°C for 24 hours), spray tests were performed on them respectively. The spraying time was set to 2 minutes and 4 minutes. The coal samples were dried again in a vacuum drying oven (50°C for 24 hours) to obtain the mass after spraying. The mass loss of the two was compared with the initial weight to obtain the anti-spraying efficiency. The anti-spraying efficiency of each material is shown in Figure 2 The dust suppression efficiencies of Examples 1 to 9 at 2min and 4min spraying are above 95% and 91% respectively, while the dust suppression efficiencies of Comparative Examples 1 and 2 at 2min and 4min spraying are 72.8% and 65.3% respectively.

[0134] This is because the dust suppression material prepared by the present invention can form a tough and smooth protective film on the surface of the coal dust, which can resist the damage of spraying raindrops, thereby preventing the dust from being raised again and improving the dust suppression efficiency.

[0135] The hardness test method is:

[0136] Coal samples with the same initial mass were sprayed with the materials prepared in Examples 1-9 and Comparative Examples 1-2, respectively, and dried in a vacuum drying oven at 50° C. for 24 hours. The hardness of the coal samples was tested using a Shore hardness tester. The test results are as follows: Figure 3 The surface hardness of the coal samples in comparative examples 1 and 2 are 61HA and 66HA respectively, which is significantly lower than that of the coal samples in the embodiment, indicating that the consolidation effect of the embodiment is better than that of the comparative sample.

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

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

[0139] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A dynamically cross-linked network reinforced anti-spray dust suppression material, characterized in that: The raw materials selected are calculated by weight percentage and include: 3-6 parts of galactomannan; 2-5 portions of isolated soy protein; 1-3 parts of succinaldehyde; 2-3 parts of boric acid; 3-6 parts of sodium lauryl sulfate; 1-3 parts of glycerin; The balance is distilled water.

2. A dynamically cross-linked network reinforced anti-spray dust suppression material as claimed in claim 1, characterized in that: The mass concentration of succinaldehyde selected is 5%.

3. A method for preparing the dynamically cross-linked network reinforced anti-spray dust suppression material as claimed in claim 2, characterized in that: The specific steps are as follows: S1, adding distilled water into a beaker, adding a certain amount of galactomannan into the beaker, and dissolving it under magnetic stirring at 80° C. to obtain a galactomannan aqueous solution; S2, add distilled water to another beaker, add the soy protein isolate thereto and place in a magnetic stirring water bath at 60°C, magnetically stir for 2 hours until dissolved, to obtain a soy protein isolate aqueous solution; S3, heating the water bath to 95°C, mixing the galactomannan aqueous solution and the soy protein isolate aqueous solution, adding a certain amount of glacial acetic acid to adjust the solution to acidity, adding a certain amount of succinaldehyde, and continuing magnetic stirring for 2 hours to obtain modified solution I; S4, cooling the modified solution I to room temperature in a water bath, adding a certain proportion of boric acid to the modified solution I, and placing it in a magnetic stirring water bath at 70°C for 2 hours to obtain a modified solution II; S5, cooling the modified solution II to room temperature, adding a certain amount of sodium hydroxide to adjust the solution pH to neutral, and adding a certain amount of sodium dodecyl sulfate and glycerol, magnetically stirring at room temperature for 1 hour to obtain a dynamic cross-linked network reinforced anti-spray dust suppression material.

4. A dynamically cross-linked network reinforced anti-spray dust suppression material as claimed in claim 3, characterized in that: The raw materials selected include, by weight percentage, Galactomannan: soy protein isolate: succinic dialdehyde: boric acid: sodium lauryl sulfate: glycerol = 4:3:2:2:4:

1.

5. The method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material according to claim 4, characterized in that: During the preparation process, when the total amount of distilled water is 200 ml, the weight of each raw material is: Galactomannan 0.8g; 6. The method for preparing a dynamically cross-linked network reinforced anti-spray dust suppression material according to claim 5, characterized in that: During the preparation process, galactomannan and soybean protein isolate undergo a cross-linking reaction to generate a cross-linking product I, and the reaction equation is: (1) The cross-linked product I reacts with borax to form a cross-linked product II, and the reaction equation is: (2)

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