An inorganic / organic fast-curing mine spraying and leak-stopping airtight material and its preparation method

Abstract

The present invention belongs to the technical field of mine spraying for plugging air leakage, and particularly relates to an inorganic / organic fast-curing mine spraying material for plugging air leakage and a preparation method thereof. The present invention uses emulsified petroleum asphalt and chloroprene latex as the matrix, sodium silicate and industrial calcium chloride as demulsifiers, and at the same time adds a water glass curing agent to the emulsified petroleum asphalt and chloroprene latex to prepare a fast-reacting composite material with high flame retardancy, high antistatic property and high anti-deformation property. The inorganic / organic composite material has a low forming temperature, a fast reaction speed and excellent physical properties, can effectively make up for the defects of traditional cement slurry cracking and high reaction temperature, low safety performance and high cost of polyurethane-based polymer materials, and has easily available raw materials and a simple operation method, and can preferably solve the problem of mine spraying for plugging air leakage on the premise of ensuring safety.

Description

Technical Field

[0001] The invention belongs to the technical field of mine spraying plugging air leakage, and specifically relates to an inorganic / organic fast-curing mine spraying plugging air leakage material and a preparation method thereof. Background Art

[0002] After coal seam mining, the air volume exchange between the ground and the air intake tunnel, between the air intake tunnel and the return air tunnel, and between the return air tunnel and the ground gradually increases, and the goaf has serious air leakage. The increase in air volume brings the hidden dangers of gas explosion and coal seam spontaneous combustion. Because once air enters the coal body, the coal oxygen spontaneously recombine to release a large amount of heat, which is accumulated under certain heat storage conditions. When the accumulated heat can meet the needs of the development of the coal spontaneous combustion process, the coal body temperature continues to rise, and finally leads to coal spontaneous combustion. Therefore, dealing with the coal loss belt at the upper and lower ends of the goaf, isolating the goaf and the upper and lower chute of the working face, and plugging the air leakage in the goaf are the key to the prevention and control of spontaneous combustion in the fully mechanized caving working face. Spray plugging and fire prevention technology has developed rapidly in recent years and is now widely used in fully mechanized caving working faces without coal pillars with spontaneous combustion. The spray plugging technology is used in the upper and lower chute of the working face, near the stop mining line and in places with serious air leakage. It has good construction performance and strong air leakage plugging ability, which can significantly reduce the hidden dangers of coal seam spontaneous combustion and gas explosion.

[0003] At present, the two most commonly used materials for spraying and plugging air leakage in coal mines are organic materials and inorganic materials. Among them, organic spraying materials mainly include phenolic foam (such as Rockwell foam), urea-formaldehyde foam (such as Aigrawni foam) and polyurethane foam. Inorganic spraying materials include various modified cement mortars and composite slurry spraying materials developed by China University of Mining and Technology. Each material has its own advantages and disadvantages. Polyurethane chemical spraying materials have the characteristics of simple construction, high expansion multiple, good adhesion and good sealing, but their cost is high, and after the construction thickness is increased, it is easy to have heartburn and smoke, and the safety risk is extremely high. Modified cement mortar spraying materials have many additives and complex construction processes. At the same time, there are problems such as long coagulation time, easy to fall off, and easy to crack after shrinkage after coagulation. If it is to be used for spraying and plugging air leakage on the wall of underground tunnels in coal mines, this material requires extremely fast reaction speed, certain tensile strength, certain deformation resistance, and excellent flame retardant and antistatic properties. Summary of the invention

[0004] In view of the deficiencies of the above materials and the relevant performance requirements of materials in coal mines underground, the present invention provides an inorganic / organic fast-curing mine spraying leak-stopping and air-blocking material. This material is a two-component inorganic / organic spraying material. The emulsified petroleum asphalt in component A reacts quickly to form a film under the action of sodium silicate in component B, and the sodium silicate in component B generates inorganic macromolecules under the action of the sodium silicate curing agent in component A. The whole reaction can be cured within an extremely short time, with a low forming temperature. The material itself is an inorganic / organic material with high safety performance. At the same time, this material has good physical property indexes such as weather resistance, adhesion, tensile strength, and elongation rate, solving the problem of material cracking caused by roadway deformation in coal mines underground and ensuring the use effect of the material well. And the inorganic / organic composite components can ensure that the material has good flame retardancy and antistatic performance, fully meeting the requirements for underground use.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] An inorganic / organic fast-curing mine spraying leak-stopping and air-blocking material is composed of component A and component B in the following parts by mass;

[0007] The component A includes:

[0008] 70 - 80 parts of emulsified petroleum asphalt, 6 - 8 parts of chloroprene latex, 5 - 10 parts of plasticizer, 7 - 9 parts of sodium silicate curing agent, 2 - 3 parts of industrial water;

[0009] The component B includes:

[0010] 70 - 80 parts of sodium silicate, 5 - 10 parts of ethylene glycol solution, 2 - 3 parts of aluminum hydroxide, 2 - 3 parts of anhydrous calcium chloride, 11 - 14 parts of flame retardant.

[0011] The emulsified petroleum asphalt in component A is an anionic emulsified petroleum asphalt with a solid content of 50 - 52%; the chloroprene latex is an anionic chloroprene latex with a solid content of 50 - 52%; the plasticizer is one or two of dibutyl phthalate, dioctyl phthalate, and dioctyl adipate; the sodium silicate curing agent is one of tributyl citrate, propylene carbonate, and glyceryl triacetate;

[0012] The sodium silicate in component B is a sodium-based sodium silicate with a modulus of 3.0 - 3.3 and a Baume degree of 41 - 43°Bé; the flame retardant is one or two of tris(2-chloroethyl) phosphate, triethyl phosphate, and tris(2-chloropropyl) phosphate.

[0013] A method for preparing the inorganic / organic fast-curing mine spraying leak-stopping and air-blocking material specifically includes the following steps:

[0014] Step 1. Preparation of Component A: At 15 - 25°C, add 70 - 80 parts of emulsified petroleum asphalt, 6 - 8 parts of chloroprene latex, 5 - 10 parts of plasticizer, 7 - 9 parts of sodium silicate curing agent, and 2 - 3 parts of industrial water into a stirring kettle in sequence. Control the rotation speed of the stirring kettle at 40 - 60 r / min and the stirring time at 30 - 40 min. After mixing evenly, obtain Component A and store it in a barrel for standby;

[0015] Step 2. Preparation of Component B: At 15 - 25°C, first add 70 - 80 parts of sodium silicate into a jacketed dispersion and mixing kettle. Control the rotation speed at 600 - 800 r / min and turn on the cooling water in the jacket. Then, add 5 - 10 parts of ethylene glycol solution, 2 - 3 parts of aluminum hydroxide, 2 - 3 parts of anhydrous calcium chloride, and 11 - 14 parts of flame retardant into the dispersion and mixing kettle in sequence and start dispersion. The dispersion time is 30 - 40 min. After mixing evenly, obtain Component B and store it in a barrel for standby;

[0016] Step 3. Insert the A and B feeding hoses on the special spraying equipment into the material barrels filled with Component A and Component B respectively. According to the mass ratio of 1∶1.2 - 1.5, spray it onto the base surface in a fan-shaped cross - and fully mixed manner outside the spray gun nozzle. It will instantly demulsify and solidify. After the solidification is completed, an inorganic / organic rapid - curing type mine spraying leak - plugging and air - stopping material is obtained.

[0017] The innovation points of the present invention compared with the previous spraying leak - plugging and air - stopping materials are as follows:

[0018] (1) The present invention uses emulsified petroleum asphalt and sodium silicate as base materials to react and prepare the spraying material. As a two - component reaction material, sodium silicate and calcium chloride in Component B can be used as demulsifiers for emulsified petroleum asphalt and chloroprene latex in Component A, enabling the emulsion in Component A to quickly demulsify and form a high - polymer solid; while the sodium silicate curing agent in Component A can quickly cure with the sodium silicate in Component B and form a silicon dioxide spatial network structure after losing water. The demulsified emulsified petroleum asphalt and chloroprene latex provide flexibility for the inorganic / organic composite material, and the silicon dioxide spatial structure formed after the curing of sodium silicate provides rigidity for the inorganic / organic composite material. The two complement each other, quickly solidify, and form an inorganic / organic rapid - curing type mine spraying leak - plugging and air - stopping material. The reaction molding process is stable without heat release, meeting the temperature requirements for the molding of mine spraying leak - plugging and air - stopping materials in the new safety standards.

[0019] (2) The reaction-generated -Si-O- macromolecular structure can enhance the rigidity of the inorganic / organic composite material of chloroprene latex and emulsified petroleum asphalt. Due to the silica network structure and the addition of a considerable amount of flame retardant, the material is ensured to have excellent flame retardant performance, and the flame retardant performance meets the requirements of MT113-1995. Due to the high water content in the composite material, the material has excellent electrical conductivity, and the antistatic performance also meets the requirements of MT113-1995. Chloroprene latex, petroleum asphalt, and sodium silicate solidified products are all good binders, so that the generated composite material has good adhesion performance with the coal wall, which can fully meet the use requirements, and can be directly used on the exposed coal rock mass or directly on the cement wall. The application places are diverse and the effect is good.

[0020] (3) The composite material has excellent antistatic, flame retardant, and anti-deformation properties, a low forming temperature of only 20-30 °C, a fast forming speed, which plays a role in quickly sealing in coal mines. And the raw materials are easy to obtain, the preparation process is simple, and it has high economic value. Specific implementation mode Example 1

[0021] The inorganic / organic fast-curing mining spraying leak-stopping and air-blocking material described in this example is composed of component A and component B measured by mass parts.

[0022] Among them:

[0023] Component A: 70 parts of emulsified petroleum asphalt, 8 parts of chloroprene latex, 10 parts of plasticizer, 9 parts of sodium silicate curing agent, 3 parts of industrial water;

[0024] Component B: 70 parts of sodium silicate, 10 parts of ethylene glycol solution, 3 parts of aluminum hydroxide, 3 parts of anhydrous calcium chloride, 14 parts of flame retardant.

[0025] The emulsified petroleum asphalt in component A is an anionic emulsified petroleum asphalt with a solid content of 50-52%; the chloroprene latex is an anionic chloroprene latex with a solid content of 50-52%; the plasticizer is prepared by mixing dibutyl phthalate and dioctyl phthalate in a mass ratio of 1:1; the sodium silicate curing agent is tributyl citrate.

[0026] The sodium silicate in component B is sodium-based sodium silicate with a modulus of 3.0 and a Baume degree of 41.5 °Bé; the flame retardant is tris(2-chloroethyl) phosphate.

[0027] A method for preparing the inorganic / organic fast-curing mining spraying leak-stopping and air-blocking material specifically includes the following steps:

[0028] Step 1:

[0029] Preparation of Component A: At 15 - 25°C, 70 parts of emulsified petroleum asphalt, 8 parts of chloroprene latex, 10 parts of plasticizer, 9 parts of sodium silicate curing agent, and 3 parts of industrial water are added to the stirring kettle in sequence. The rotation speed of the stirring kettle is controlled at 40 - 60 r / min, and the stirring time is 30 - 40 min. After mixing evenly, Component A is obtained and stored in barrels for later use.

[0030] Step 2:

[0031] Preparation of Component B: At 15 - 25°C, first add 70 parts of sodium silicate to the jacketed dispersion and mixing kettle, control the rotation speed at 600 - 800 r / min, turn on the cooling water in the jacket, and then add 10 parts of ethylene glycol solution, 3 parts of aluminum hydroxide, 3 parts of anhydrous calcium chloride, and 14 parts of flame retardant to the dispersion and mixing kettle in sequence to start dispersion. The dispersion time is 30 - 40 min. After mixing evenly, Component B is obtained and stored in barrels for later use.

[0032] Step 3:

[0033] Insert the A and B feeding hoses on the special spraying equipment into the material barrels containing A and B materials respectively. According to the mass ratio of 1:1.5, spray them in a fan-shaped cross at the nozzle and mix fully, and then spray them onto the base surface. Demulsification and curing occur instantly. After the curing is completed, an inorganic / organic fast-curing type mining spraying leak stoppage and airtight material is obtained. Example 2

[0034] The inorganic / organic fast-curing type mining spraying leak stoppage and airtight material described in this example is composed of Component A and Component B measured by mass parts

[0035] Among them:

[0036] Component A: 80 parts of emulsified petroleum asphalt, 6 parts of chloroprene latex, 5 parts of plasticizer, 7 parts of sodium silicate curing agent, 2 parts of industrial water;

[0037] Component B: 80 parts of sodium silicate, 5 parts of ethylene glycol solution, 2 parts of aluminum hydroxide, 2 parts of anhydrous calcium chloride, 11 parts of flame retardant.

[0038] The emulsified petroleum asphalt in Component A is an anionic emulsified petroleum asphalt with a solid content of 50 - 52%; the chloroprene latex is an anionic chloroprene latex with a solid content of 50 - 52%; the plasticizer is dioctyl adipate; the sodium silicate curing agent is propylene carbonate.

[0039] The sodium silicate in Component B is sodium-based sodium silicate with a modulus of 3.1 and a Baume degree of 42.5°Bé; the flame retardant is triethyl phosphate.

[0040] A method for preparing the inorganic / organic fast-curing type mining spraying leak stoppage and airtight material specifically includes the following steps:

[0041] Step 1:

[0042] Preparation of Component A: At 15 - 25°C, add 80 parts of emulsified petroleum asphalt, 6 parts of chloroprene latex, 5 parts of plasticizer, 7 parts of sodium silicate curing agent, and 2 parts of industrial water into the stirring kettle in sequence. Control the rotation speed of the stirring kettle at 40 - 60 r / min and the stirring time at 30 - 40 min. After mixing evenly, obtain Component A and store it in a barrel for standby.

[0043] Step 2:

[0044] Preparation of Component B: At 15 - 25°C, first add 80 parts of sodium silicate into the jacketed dispersion and mixing kettle, control the rotation speed at 600 - 800 r / min, turn on the cooling water in the jacket, and then add 5 parts of ethylene glycol solution, 2 parts of aluminum hydroxide, 2 parts of anhydrous calcium chloride, and 11 parts of flame retardant into the dispersion and mixing kettle in sequence to start dispersion. The dispersion time is 30 - 40 min. After mixing evenly, obtain Component B and store it in a barrel for standby.

[0045] Step 3:

[0046] Insert the A and B feeding hoses on the special spraying equipment into the material barrels filled with A and B materials respectively. According to the mass ratio of 1:1.2, spray them in a fan-shaped cross at the outside of the spray gun nozzle and mix fully, then spray them onto the base surface, where they will instantly demulsify and solidify. After the solidification is completed, obtain the inorganic / organic fast-curing mining spraying leak-proof and air-blocking material. Example 3

[0047] The inorganic / organic fast-curing mining spraying leak-proof and air-blocking material described in this example is composed of Component A and Component B measured by mass parts

[0048] Among them:

[0049] Component A: 70 parts of emulsified petroleum asphalt, 8 parts of chloroprene latex, 10 parts of plasticizer, 9 parts of sodium silicate curing agent, 3 parts of industrial water;

[0050] Component B: 80 parts of sodium silicate, 5 parts of ethylene glycol solution, 2 parts of aluminum hydroxide, 2 parts of anhydrous calcium chloride, 11 parts of flame retardant.

[0051] The emulsified petroleum asphalt in Component A is an anionic emulsified petroleum asphalt with a solid content of 50 - 52%; the chloroprene latex is an anionic chloroprene latex with a solid content of 50 - 52%; the plasticizer is prepared by mixing dibutyl phthalate and dioctyl adipate according to a mass ratio of 1:1; the sodium silicate curing agent is glycerol triacetate.

[0052] The sodium silicate in Component B is a sodium-based sodium silicate with a modulus of 3.3 and a Baume degree of 41°Bé; the flame retardant is tris(2-chloropropyl) phosphate;.

[0053] A method for preparing the inorganic / organic fast-curing mine spraying and plugging air leakage material specifically comprises the following steps:

[0054] Step 1:

[0055] Preparation of component A: At 15-25°C, 70 parts of emulsified petroleum asphalt, 8 parts of chloroprene latex, 10 parts of plasticizer, 9 parts of sodium silicate curing agent, and 3 parts of industrial water are sequentially added to a stirring kettle. The rotation speed of the stirring kettle is controlled at 40-60 r / min, and the stirring time is 30-40 min. After mixing evenly, component A is obtained and stored in a barrel for standby.

[0056] Step 2:

[0057] Preparation of component B: At 15-25°C, first add 80 parts of sodium silicate to a jacketed dispersion and mixing kettle, control the rotation speed at 600-800 r / min, turn on the cooling water in the jacket, and then sequentially add 5 parts of ethylene glycol solution, 2 parts of aluminum hydroxide, 2 parts of anhydrous calcium chloride, and 11 parts of flame retardant into the dispersion and mixing kettle to start dispersion. The dispersion time is 30-40 min. After mixing evenly, component B is obtained and stored in a barrel for standby.

[0058] Step 3:

[0059] Insert the A and B feeding hoses on the special spraying equipment into the material barrels filled with A and B materials respectively. According to the mass ratio of 1:1.3, spray them in a fan-shaped cross at the outside of the spray gun nozzle and mix fully, and then spray them onto the base surface, where they will instantaneously demulsify and solidify. After the solidification is completed, the inorganic / organic fast-curing mine spraying and plugging air leakage material is obtained. Example 4

[0060] The inorganic / organic fast-curing mine spraying and plugging air leakage material in this example is composed of component A and component B measured by mass parts.

[0061] Among them:

[0062] Component A: 80 parts of emulsified petroleum asphalt, 6 parts of chloroprene latex, 5 parts of plasticizer, 7 parts of sodium silicate curing agent, and 2 parts of industrial water;

[0063] Component B: 70 parts of sodium silicate, 10 parts of ethylene glycol solution, 3 parts of aluminum hydroxide, 3 parts of anhydrous calcium chloride, and 14 parts of flame retardant.

[0064] The emulsified petroleum asphalt in component A is an anionic emulsified petroleum asphalt with a solid content of 50-52%; the chloroprene latex is an anionic chloroprene latex with a solid content of 50-52%; the plasticizer is a mixture of dioctyl phthalate and dioctyl adipate in a mass ratio of 1:1; the sodium silicate curing agent is tributyl citrate.

[0065] The sodium silicate described in Component B is sodium-based sodium silicate with a modulus of 3.0 and a Baume degree of 42°Bé; the flame retardant is a homogeneous mixture of tris(2-chloropropyl) phosphate and tris(2-chloroethyl) phosphate in a mass ratio of 1:1.

[0066] A method for preparing the inorganic / organic fast-curing mining spraying leak stoppage and airtight material specifically includes the following steps:

[0067] Step 1:

[0068] Preparation of Component A: At 15 - 25°C, 80 parts of emulsified petroleum asphalt, 6 parts of chloroprene latex, 5 parts of plasticizer, 7 parts of sodium silicate curing agent, and 2 parts of industrial water are sequentially added to a stirring kettle. The rotation speed of the stirring kettle is controlled at 40 - 60 r / min, and the stirring time is 30 - 40 min. After mixing evenly, Component A is obtained and stored in a barrel for later use.

[0069] Step 2:

[0070] Preparation of Component B: At 15 - 25°C, first add 70 parts of sodium silicate to a jacketed dispersion and mixing kettle, control the rotation speed at 600 - 800 r / min, turn on the cooling water in the jacket, and then sequentially add 10 parts of ethylene glycol solution, 3 parts of aluminum hydroxide, 3 parts of anhydrous calcium chloride, and 14 parts of flame retardant into the dispersion and mixing kettle to start dispersion. The dispersion time is 30 - 40 min. After mixing evenly, Component B is obtained and stored in a barrel for later use.

[0071] Step 3:

[0072] Insert the A and B feeding hoses on the special spraying equipment into the material barrels filled with A and B materials respectively. According to a mass ratio of 1∶1.4, spray them in a fan-shaped cross at the outside of the spray gun nozzle and mix fully, and then spray them onto the base surface. They will instantly demulsify and cure. After the curing is completed, an inorganic / organic fast-curing mining spraying leak stoppage and airtight material is obtained. Example 5

[0073] The inorganic / organic fast-curing mining spraying leak stoppage and airtight material described in this example is composed of Component A and Component B measured by mass parts

[0074] Among them:

[0075] Component A: 75 parts of emulsified petroleum asphalt, 7 parts of chloroprene latex, 8 parts of plasticizer, 7.5 parts of sodium silicate curing agent, and 2.5 parts of industrial water;

[0076] Component B: 75 parts of sodium silicate, 8 parts of ethylene glycol solution, 2.5 parts of aluminum hydroxide, 2.5 parts of anhydrous calcium chloride, and 12 parts of flame retardant.

[0077] The emulsified petroleum asphalt in Component A is an anionic emulsified petroleum asphalt with a solid content of 50-52%; the chloroprene latex is an anionic chloroprene latex with a solid content of 50-52%; the plasticizer is dioctyl phthalate; the water glass curing agent is tributyl citrate.

[0078] The water glass in Component B is sodium-based water glass with a modulus of 3.2 and a Baumé degree of 41.5°Bé; the flame retardant is triethyl phosphate.

[0079] A method for preparing the inorganic / organic fast-curing mining spraying and plugging air leakage material specifically includes the following steps:

[0080] Step 1:

[0081] Preparation of Component A: At 15-25°C, 75 parts of emulsified petroleum asphalt, 7 parts of chloroprene latex, 8 parts of plasticizer, 7.5 parts of water glass curing agent, and 2.5 parts of industrial water are added to a stirring kettle in sequence. The rotation speed of the stirring kettle is controlled at 40-60 r / min, and the stirring time is 30-40 min. After mixing evenly, Component A is obtained and stored in a barrel for later use.

[0082] Step 2:

[0083] Preparation of Component B: At 15-25°C, first add 75 parts of water glass to a jacketed dispersion and mixing kettle, control the rotation speed at 600-800 r / min, turn on the cooling water in the jacket, and then add 8 parts of ethylene glycol solution, 2.5 parts of aluminum hydroxide, 2.5 parts of anhydrous calcium chloride, and 12 parts of flame retardant to the dispersion and mixing kettle in sequence to start dispersion. The dispersion time is 30-40 min. After mixing evenly, Component B is obtained and stored in a barrel for later use.

[0084] Step 3:

[0085] Insert the A and B feeding hoses on the special spraying equipment into the material barrels containing A and B materials respectively. According to a mass ratio of 1:1.2, spray them in a fan-shaped cross at the outside of the spray gun nozzle and mix fully, and then spray them onto the base surface. Demulsification and curing occur instantly. After the curing is completed, an inorganic / organic fast-curing mining spraying and plugging air leakage material is obtained.

[0086] The obtained inorganic / organic fast-curing mining spraying and plugging air leakage material is tested according to the tensile strength and elongation at break detection methods in "GB / T 16777-2008 Test Methods for Building Waterproof Coatings", the flame retardant performance and surface resistance detection methods in "MT / T 113-1995 General Test Methods and Determination Rules for Flame Retardancy and Antistatic Property of Polymer Products Used in Coal Mines", etc. The physical and mechanical properties are shown in Table 1

[0087] Table 1. Physical Properties of Inorganic / Organic Fast-Curing Mining Spraying and Plugging Air Leakage Material

[0088]

Claims

1. An inorganic / organic fast-curing mining spraying leak-stopping and air-blocking material, characterized in that: It consists of component A and component B measured by mass parts as follows; Component A includes: 70 - 80 parts of emulsified petroleum asphalt, 6 - 8 parts of chloroprene latex, 5 - 10 parts of plasticizer, 7 - 9 parts of water glass curing agent, 2 - 3 parts of industrial water; Component B includes: 70 - 80 parts of water glass, 5 - 10 parts of ethylene glycol solution, 2 - 3 parts of aluminum hydroxide, 2 - 3 parts of anhydrous calcium chloride, 11 - 14 parts of flame retardant; The emulsified petroleum asphalt in component A is an anionic emulsified petroleum asphalt with a solid content of 50 - 52%; the chloroprene latex is an anionic chloroprene latex with a solid content of 50 - 52%; the plasticizer is one or two of dibutyl phthalate, dioctyl phthalate and dioctyl adipate; the water glass curing agent is one of tributyl citrate, propylene carbonate, glyceryl triacetate; The water glass in component B is a sodium - based water glass with a modulus of 3.0 - 3.3 and a Baume degree of 41 - 43°Bé; the flame retardant is one or two of tris(2 - chloroethyl) phosphate, triethyl phosphate, tris(2 - chloropropyl) phosphate.

2. A preparation method of the inorganic / organic fast-curing mining spraying leak-stopping and air-blocking material according to claim 1, characterized in that: It includes the following steps: Step 1. Preparation of component A: At 15 - 25°C, add 70 - 80 parts of emulsified petroleum asphalt, 6 - 8 parts of chloroprene latex, 5 - 10 parts of plasticizer, 7 - 9 parts of water glass curing agent, 2 - 3 parts of industrial water into a stirring kettle in sequence. Control the rotation speed of the stirring kettle at 40 - 60 r / min and the stirring time at 30 - 40 min. After mixing evenly, obtain component A and store it in a barrel for standby; Step 2. Preparation of component B: At 15 - 25°C, first add 70 - 80 parts of water glass into a jacketed dispersion and mixing kettle, control the rotation speed at 600 - 800 r / min, turn on the cooling water in the jacket, and then add 5 - 10 parts of ethylene glycol solution, 2 - 3 parts of aluminum hydroxide, 2 - 3 parts of anhydrous calcium chloride, 11 - 14 parts of flame retardant into the dispersion and mixing kettle in sequence, start dispersion, with a dispersion time of 30 - 40 min. After mixing evenly, obtain component B and store it in a barrel for standby; Step 3. Insert the A and B feeding hoses on the special spraying equipment into the material barrels filled with A and B materials respectively. According to a mass ratio of 1∶1.2 - 1.5, cross - mix fan - shaped outside the spray gun nozzle and spray it onto the base surface. Demulsify and solidify instantly. After the solidification is completed, obtain an inorganic / organic fast - curing mining spraying and plugging air - leakage material.

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