A modified spray-on waterproof material and its preparation method
By combining superhydrophobic bitumen material with acrylate to form an interpenetrating network structure, the problems of brittleness and insufficient self-healing ability of acrylate spray waterproofing material in low humidity environment are solved, and the flexibility and water resistance of the material are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
- Filing Date
- 2024-06-21
- Publication Date
- 2026-06-30
AI Technical Summary
Acrylic spray waterproofing materials are prone to brittleness and cracking in low humidity environments, and have poor self-healing ability and insufficient water resistance. Existing technological improvements have failed to effectively solve these problems.
By combining superhydrophobic bitumen material with acrylate, an interpenetrating network structure is formed through a cross-linking reaction, which locks in water molecules, improves the material's flexibility and self-healing ability, and enhances its water resistance.
It effectively slows down the loss of water molecules, improves the flexibility and self-healing ability of materials in low-humidity environments, enhances water resistance, and avoids performance degradation caused by long-term immersion in water.
Smart Images
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Abstract
Description
Technical Field
[0001] This invention belongs to the field of waterproof materials technology, specifically relating to a modified spray-on waterproof material and its preparation method. Background Technology
[0002] Acrylic spray waterproofing material is a new type of waterproofing material used in subways, urban underground utility tunnels, tunnels, and underground engineering projects. This material has uniform quality and can form a complete skin-like waterproof layer through polymerization, giving it the characteristics of one-time integral film formation and seamless adhesion. In addition, because acrylic spray waterproofing material contains a large number of emulsion microspheres, it can rupture and release intermediates when the material is damaged. The intermediates react with moisture and oxygen in the atmosphere to generate new compounds, forming a new protective layer on the spray film surface, giving it the property of self-healing upon contact with water. Therefore, it is widely used.
[0003] However, in actual construction, the following problems were found: 1) When the relative humidity of the construction environment is below 90%, the waterproof coating layer formed by the acrylate spray waterproofing material loses water molecules, leading to increased brittleness and easy cracking; 2) Although the acrylate spray coating has the ability to self-heal upon contact with water, this is under the premise that the cracks in the coating are small. However, when the acrylate spray coating is in a low humidity environment below 90% for a long time, the cracks in the acrylate spray coating will become larger and larger due to water loss. When it reaches a certain level, even if the acrylate spray coating... If it gets wet again, it cannot be restored to its original state, which seriously reduces the service life of the acrylate spray film coating. In addition, when changes in the geological structure cause damage to the waterproof layer and cracks to occur when the acrylate spray film coating is dehydrated, it cannot heal the gaps in time due to the lack of water molecules. This will lead to further expansion of the gaps. On the other hand, as time goes by, its compounds will react in the air, and even if it gets wet again later, it will lose its self-healing ability. 3) The water resistance of acrylate spray waterproof material is poor. After the waterproof coating layer is soaked in water for a long time, its waterproof performance will be seriously reduced.
[0004] Existing technologies address the problem of brittleness and cracking of acrylate spray waterproofing films in low-humidity environments by proposing the following solutions: 1) Adding water-retaining agents or superabsorbent polymers to improve the water absorption of the coating and alleviate cracking in low-humidity environments. However, the addition of water-retaining agents and superabsorbent polymers, when the waterproofing layer is constantly submerged in water, can lead to a sharp decline in mechanical properties due to excessive water absorption, reducing its waterproofing effect. Furthermore, water-retaining agents and superabsorbent polymers only reduce the humidity requirements to a certain extent; when the humidity is significantly reduced, the evaporation efficiency of water molecules remains high, thus limiting their effectiveness. 2) Adding basalt fibers to improve the mechanical strength of the coating and alleviate cracking in low-humidity environments. However, the problem is that basalt fibers have a long particle size and are randomly distributed in the liquid, making them difficult to mix evenly. It not only affects the performance of the coating, but also easily causes clogging of the spraying equipment. Moreover, it can only provide mechanical strength to the coating, but cannot fundamentally solve the problem of acrylate spray waterproofing material easily losing water in low humidity environment, which leads to coating cracking and its difficulty in self-healing. 3) Adding flexible carbon chain compounds containing double bonds, organosilicon prepolymers containing two carbon-carbon double bonds, adding flexible 2-methyl-2-acrylate-2-(2-methoxyethoxy)ethyl ester, or modifying with silane, introduces flexible segments to improve the flexibility of the coating, thereby alleviating the cracking problem of acrylate spray coating in low humidity environment. However, the problem is that it only alleviates the cracking problem caused by the rapid decrease in elasticity of the waterproof coating due to water loss by introducing flexible segments. It cannot fundamentally slow down the loss of water molecules in acrylate spray coating, and cannot solve the problem of the difficulty in restoring the self-healing ability of acrylate spray coating due to water loss.
[0005] Furthermore, none of the aforementioned existing technologies can solve the problem of poor water resistance of acrylate spray waterproofing layers. Summary of the Invention
[0006] The purpose of this invention is to overcome the defects in the prior art and provide a modified spray film waterproof material and its preparation method. It can lock in the moisture in the acrylate spray film coating, greatly slow down the rate of water molecule loss in the acrylate spray film coating under low humidity conditions, and solve the problems of reduced coating elasticity, easy cracking, and difficulty in self-healing when exposed to water caused by water molecule loss in the acrylate spray film coating.
[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:
[0008] A modified spray-on waterproof material, comprising component A and component B, wherein the weight ratio of component A to component B is 1-1.5:1;
[0009] Component A comprises the following raw materials in parts by weight:
[0010] 100 parts of acrylate aqueous solution, 2-10 parts of crosslinking agent, 50-150 parts of filler, 0-5 parts of additives, 0.1-4 parts of reducing agent, and 1-4 parts of coagulant;
[0011] Component B comprises the following raw materials in parts by weight:
[0012] The composition is 100 parts emulsified asphalt, 30-60 parts filler, 0.1-3 parts oxidant, and 0-5 parts additives;
[0013] The mass ratio of emulsified asphalt to coagulant in the modified spray waterproofing material is 100:1-3.
[0014] As a further technical solution, the acrylate aqueous solution is one or more of the following: calcium acrylate aqueous solution, magnesium acrylate aqueous solution, magnesium methacrylate aqueous solution, 1,6-hexanediol diacrylate aqueous solution, n-butyl-2-cyanoacrylate aqueous solution, calcium methacrylate aqueous solution, sodium acrylate aqueous solution, methacrylate aqueous solution, and ammonium acrylate aqueous solution.
[0015] As a further technical solution, the mass concentration of the acrylate aqueous solution is 20-50%.
[0016] As a further technical solution, the crosslinking agent is one or more of polyethylene glycol allyl ether, polyethylene glycol acrylate, and small molecule acrylate.
[0017] As a further technical solution, the reducing agent is one or more of triethanolamine, diethanolamine, stannous chloride, sodium thiosulfate, sodium bisulfite, sodium dithionite, ferrous sulfate, cobalt naphthenate, and lead isooctanoate.
[0018] As a further technical solution, the coagulant is calcium chloride, calcium nitrate, sodium chloride, magnesium chloride, ferric chloride, etc.
[0019] As a further technical solution, the emulsified asphalt is one or both of anionic emulsified asphalt and nonionic emulsified asphalt;
[0020] As a further technical solution, the mass concentration of the emulsified asphalt is 40-60%.
[0021] As a further technical solution, the initiator is one or more of potassium persulfate, ammonium persulfate, sodium persulfate, methyl ethyl ketone peroxide, and cyclohexyl peroxide.
[0022] As a further technical solution, the filler includes one or more of the following: fumed silica, precipitated silica, light calcium carbonate, heavy calcium carbonate, kaolin, talc, iron black, phthalocyanine blue, and iron yellow.
[0023] As a further technical solution, the additives include one or more of the following: defoamers, antisettling agents, antioxidants, and dispersants.
[0024] As a further technical solution, components A and B are mixed before use or mixed and sprayed simultaneously using specialized spraying equipment.
[0025] A method for preparing the modified spray-on waterproof material includes the following steps: Step 1, mixing an acrylate aqueous solution, a crosslinking agent, an auxiliary agent, a coagulant, and a reducing agent evenly to obtain component A;
[0026] Step 2: Mix the emulsified asphalt, additives, and oxidant evenly to obtain component B;
[0027] Step 3: Use a special spraying equipment to mix and spray components A and B to obtain the modified spray waterproofing material.
[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0029] This invention combines superhydrophobic bitumen material with acrylate. After mixing, a reaction occurs, where acrylate monomers polymerize into acrylate polymers, while the bitumen emulsion rapidly forms a film under the action of a coagulant, creating an interpenetrating network structure with the acrylate polymer. The modified spray-on waterproof layer, due to the addition of the hydrophobic bitumen material, can lock water molecules within the three-dimensional network structure, reducing the probability of evaporation and loss. This not only maintains the material's long-term flexibility, solving the problem of decreased elasticity, increased brittleness, and easy cracking of acrylate spray-on waterproof layers in low-humidity environments, but also promptly repairs cracks in the waterproof layer caused by structural layer deformation. This avoids the problem in traditional technologies where cracks cannot be repaired in time when the waterproof layer is in a dry state due to water loss, leading to increasingly larger cracks and ultimately failing to achieve the desired self-healing effect even when exposed to water.
[0030] Furthermore, the addition of emulsified asphalt in this invention avoids the problem of decreased tensile strength of the acrylate spray waterproofing layer under long-term water immersion.
[0031] In summary, this invention, by combining superhydrophobic asphalt materials with acrylates and strictly controlling the type and amount of coagulant, ensures that the asphalt and acrylate polymers form an interpenetrating network, locking water molecules within the network and significantly delaying water loss. Furthermore, by utilizing the hydrophobicity of emulsified asphalt, it solves the problem of decreased water resistance of acrylate spray waterproofing layers under long-term water immersion. Detailed Implementation
[0032] The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0033] Unless otherwise specified, all raw materials used in this invention are commercially available.
[0034] Example 1
[0035] A modified spray-on waterproofing material, comprising component A and component B;
[0036] Component A comprises the following raw materials in parts by weight:
[0037] 100 parts of 45% calcium acrylate aqueous solution, 4 parts of polyethylene glycol acrylate, 80 parts of heavy calcium carbonate, 50 parts of talc, 2 parts of defoamer, and 2 parts of calcium chloride.
[0038] Weigh each raw material of component A according to the proportion, stir in a stirring tank at 450 r / min for 45 min, add 0.2 parts of ferrous sulfate before use to prepare component A solution;
[0039] Component B comprises the following raw materials in parts by weight:
[0040] 100 parts of emulsified asphalt (anionic emulsified asphalt) with a mass concentration of 50%, 50 parts of heavy calcium carbonate, and 1.5 parts of defoamer;
[0041] Weigh each raw material of component B according to the weight parts, add emulsified asphalt, filler and defoamer to the mixing tank, stir at 450 r / min for 45 min, add 0.4 parts of sodium persulfate before use to obtain component B liquid.
[0042] A method for preparing a modified spray-on waterproof layer includes the following steps:
[0043] Before use, mix component A and component B in a 1:1 volume ratio using a spraying device and spray. After curing, a modified waterproof film will be formed.
[0044] Example 2
[0045] A modified spray-on waterproofing material, comprising component A and component B;
[0046] Component A comprises the following raw materials in parts by weight:
[0047] 100 parts of a 40% magnesium acrylate aqueous solution, 2 parts of polyethylene glycol acrylate, 50 parts of heavy calcium carbonate, 20 parts of fumed silica, 2 parts of defoamer, and 1.5 parts of magnesium chloride.
[0048] Weigh each raw material of component A according to the proportion, stir in a stirring tank at 450 r / min for 45 min, add 0.4 parts of ferrous sulfate before use to prepare component A solution;
[0049] Component B comprises the following raw materials in parts by weight:
[0050] 100 parts of emulsified asphalt (nonionic emulsified asphalt) with a mass concentration of 60%, 60 parts of talc powder, and 2 parts of defoamer;
[0051] Weigh each raw material of component B according to the weight parts, add emulsified asphalt, filler and defoamer into the mixing tank, stir at 450 r / min for 45 min, add 0.8 parts of ammonium persulfate before use to prepare component B liquid.
[0052] A method for preparing a modified spray-on waterproof layer includes the following steps:
[0053] Before use, mix component A and component B in a 1:1 volume ratio using a spraying device and spray. After curing, a modified waterproof film will be formed.
[0054] Example 3
[0055] A modified spray-on waterproofing material, comprising component A and component B;
[0056] Component A comprises the following raw materials in parts by weight:
[0057] 100 parts of a 45% magnesium methacrylate aqueous solution, 8 parts of ethyl hydroxymethyl acrylate, 40 parts of heavy calcium carbonate, 60 parts of kaolin, 2.5 parts of defoamer, and 1.5 parts of sodium chloride.
[0058] Weigh each raw material of component A according to the proportion, stir in a mixing tank at 450 r / min for 45 min, and add 5 parts of triethanolamine to prepare component A solution before use;
[0059] Component B comprises the following raw materials in parts by weight:
[0060] 100 parts of emulsified asphalt (anionic emulsified asphalt) with a mass concentration of 50%, 50 parts of kaolin, and 1.5 parts of defoamer;
[0061] Weigh each raw material of component B according to the weight parts, add emulsified asphalt, filler and defoamer into the mixing tank, stir at 450 r / min for 45 min, and then add 2 parts of potassium persulfate to obtain the component B liquid.
[0062] A method for preparing a modified spray-on waterproof layer includes the following steps:
[0063] Before use, mix component A and component B in a 1:1 volume ratio using a spraying device and spray. After curing, a modified waterproof film will be formed.
[0064] Example 4
[0065] A modified spray-on waterproofing material, comprising component A and component B;
[0066] Component A comprises the following raw materials in parts by weight:
[0067] 100 parts of a 35% calcium magnesium methacrylate aqueous solution, 5 parts of dimethylamine ethyl methacrylate, 2 parts of triethanolamine, 50 parts of talc, 50 parts of kaolin, 1.8 parts of defoamer, and 1 part of calcium nitrate.
[0068] Weigh each raw material of component A according to the proportion, stir in a stirring tank at 450 r / min for 45 min, then add 2 parts of triethanolamine to obtain component A solution;
[0069] Component B comprises the following raw materials in parts by weight:
[0070] 100 parts of emulsified asphalt (anionic emulsified asphalt) with a mass concentration of 55%, 30 parts of talc powder, and 1.5 parts of defoamer;
[0071] Weigh each raw material of component B according to the weight parts, add emulsified asphalt, filler and defoamer into the mixing tank, stir at 450 r / min for 45 min, and then add 0.4 parts of sodium persulfate to obtain the component B liquid.
[0072] Before use, use a spraying device to mix component A and component B liquid at a mass ratio of 1.4:1 and spray them into a film to form a modified waterproof spray film.
[0073] Examples 3 and 5-8: Effect of coagulant dosage on the performance of the prepared modified spray-on waterproof layer
[0074] I. Material Preparation:
[0075] A modified spray film waterproof material is the same as in Example 3, except that the amount of sodium chloride coagulant added in each example is different. The amount of sodium chloride in Examples 3 and 5-8 is shown in Table 1.
[0076] II. Performance Testing:
[0077] The modified spray waterproof layer samples prepared in Examples 3 and 5-8 were sprayed onto a flexible substrate and then cured in a standard environment (23±2℃, RH50±10) for 4 days, dried in a forced-air oven at 60℃ for 16 hours, and immersed in water at 23℃ for 7 days. Their performance indicators were then checked, and the results are shown in Table 1.
[0078] The performance indicators, including tensile strength, elongation at break, and tear strength, are tested in accordance with GB / T16777-2008 standard.
[0079] III. Results
[0080] Table 1
[0081]
[0082] Comparative Example 1
[0083] A modified spray-on waterproof material is the same as that in Example 4, except that Comparative Example 1 uses a 45% polyacrylic acid emulsion instead of the acrylate aqueous solution in Example 4.
[0084] Comparative Example 2
[0085] A modified spray-on waterproofing material includes the following steps: comprising component A and component B;
[0086] Component A comprises the following raw materials in parts by weight:
[0087] 100 parts of a 35% calcium magnesium methacrylate aqueous solution, 5 parts of dimethylamine ethyl methacrylate, 2 parts of triethanolamine, 50 parts of talc, 50 parts of kaolin, 1.8 parts of defoamer, and 1 part of calcium nitrate.
[0088] Weigh each raw material of component A according to the proportion, stir in a stirring tank at 450 r / min for 45 min, then add 2 parts of triethanolamine to obtain component A solution;
[0089] Component B comprises the following raw materials in parts by weight:
[0090] 100 parts of a 35% calcium magnesium methacrylate aqueous solution, 30 parts of talc powder, and 1.5 parts of defoamer;
[0091] Weigh each raw material of component B according to the weight parts, add 35% calcium magnesium methacrylate aqueous solution, filler and defoamer to the mixing tank, stir at 450 r / min for 45 min, and then add 0.4 parts of sodium persulfate to obtain the component B solution.
[0092] Before use, use a spraying device to mix component A and component B liquid at a mass ratio of 1.4:1 and spray them into a film to form a modified waterproof spray film.
[0093] Comparative Example 3
[0094] A modified spray-on waterproofing material, comprising component A and component B.
[0095] Component A comprises the following raw materials in parts by weight: 90 parts of magnesium methacrylate aqueous solution with a mass concentration of 45%, 0.5 parts of magnesium hydroxide, 20 parts of barium sulfate, 1 part of acrylic emulsion, 5 parts of benzoyl peroxide, and 5 parts of sodium borohydride.
[0096] Component B comprises the following raw materials in parts by weight: 50 parts of 2-methyl-2-acrylate-2-(2-methoxyethoxy)ethyl ester and 10 parts of propylene glycol alginate.
[0097] Its preparation method includes:
[0098] Step 1: Mix 90 parts of zinc acrylate aqueous solution, 0.5 parts of magnesium hydroxide, 20 parts of barium sulfate, and 1 part of acrylic emulsion from component A with 50 parts of 2-methyl-2-acrylate-2-(2-methoxyethoxy)ethyl ester and 10 parts of propylene glycol alginate from component B. The reaction temperature is 45℃, the reaction time is 240 min, and the pH value of the solution is controlled between 6.0 and 7.0 to prepare the acrylate main solution.
[0099] Step 2: Divide the prepared acrylate main solution into two equal parts. Mix one part of the acrylate main solution with 5 parts of benzoyl peroxide to obtain component A; mix the other part of the acrylate main solution with 5 parts of sodium borohydride to obtain component B.
[0100] Before use, components A and B are mixed and sprayed into a film using specialized spraying equipment to form an acrylate film.
[0101] Comparative Example 4
[0102] A modified spray-on waterproofing material, comprising component A and component B;
[0103] Its preparation method is as follows:
[0104] Step 1: Preparation of polyvinyl acetal: First, dissolve polyvinyl alcohol with a molecular weight of 130,000 in water, heat to 90°C, stir for 30 minutes, filter to remove insoluble impurities, and degas under vacuum to obtain a polyvinyl alcohol solution with a concentration of 12 g / L.
[0105] Then, a 25% glutaraldehyde aqueous solution and an equal volume of hydrochloric acid were added to a polyvinyl alcohol solution, stirred for 10 min for crosslinking, and degassed under vacuum to obtain polyvinyl alcohol acetal, wherein the molar ratio of polyvinyl alcohol to glutaraldehyde was 1:25.
[0106] Step 2: By weight, mix 170 parts of 45% magnesium acrylate aqueous solution, 25 parts of polyvinyl acetal, 12 parts of kaolin, 12 parts of silica, and 12 parts of calcium carbonate in a mixing tank, disperse at high speed, stir evenly, and pass through a 600-mesh sieve. Divide into two parts, A and B, in a 1:1 ratio, and add 4 parts of sodium persulfate and 4 parts of ferrous sulfate to each part to obtain component A and component B.
[0107] Before use, components A and B are mixed and sprayed into a film using specialized spraying equipment to form an acrylate film.
[0108] Example of effect
[0109] The modified sprayed waterproof layer samples prepared in Examples 1-4 and Comparative Examples 1-3 were sprayed onto a flexible substrate and then cured in a standard environment (23±2℃, RH50±10) for 4 days, dried in a forced-air oven at 60℃ for 8 hours, and immersed in water at 23℃ for 7 days. Their tensile strength, elongation at break, and tear strength were then examined. The results are shown in Table 2.
[0110] Take 100g of the modified spray waterproof layer samples prepared in Examples 1-4 and Comparative Examples 1-3, dry them in a forced-air oven at 60℃ for 8h and soak them in water at 23℃ for 7 days, and measure the sample mass residual rate. The results are shown in Table 3.
[0111] Among them, the testing of tensile strength, elongation at break and tear strength shall be carried out in accordance with the standard GB / T16777-2008;
[0112] The method for testing the mass residue rate is as follows: Prepare the required sample, weigh the initial mass m1, place it under the conditions described above, take it out and measure the mass m2. Mass residue rate = (m2-m1)×100%.
[0113] Table 2
[0114]
[0115]
[0116] Table 3
[0117] As can be seen from the comparison in Table 2-3, the performance of Examples 1-3 of the present invention is superior to that of Comparative Examples 1-4 in all aspects. This is because the present invention combines superhydrophobic bitumen material with acrylate. After the two are mixed, a reaction occurs, in which the acrylate monomers polymerize into acrylate polymer materials, while the bitumen emulsion rapidly forms a film under the action of a coagulant, forming an interpenetrating network structure with the acrylate polymer materials. Due to the addition of hydrophobic bitumen material, the modified spray waterproofing layer can lock water molecules in the three-dimensional network structure, reducing the probability of evaporation and loss. It can not only make the material maintain its flexibility for a long time, solving the problem of decreased elasticity, increased brittleness, and easy cracking of acrylate spray waterproofing layers in low humidity environments, but also promptly repair cracks in the waterproofing layer caused by structural layer deformation. This avoids the problem in traditional technology where cracks cannot be repaired in time when the waterproofing layer is in a dry state for a long time due to water loss, and they become larger and larger, so that even when exposed to water, the ideal self-healing effect cannot be achieved.
[0118] The addition of emulsified asphalt in this invention also avoids the problem of decreased tensile strength of the acrylate spray waterproofing layer under long-term water immersion.
[0119] In summary, this invention, by combining superhydrophobic asphalt materials with acrylates and strictly controlling the type and amount of coagulant, ensures that the asphalt and acrylate polymers form an interpenetrating network, locking water molecules within the network and significantly delaying water loss. Furthermore, by utilizing the hydrophobicity of emulsified asphalt, it solves the problem of decreased water resistance of acrylate spray waterproofing layers under long-term water immersion.
[0120] The embodiments described above are merely preferred embodiments of the present invention, and not an exhaustive list of all possible implementations of the present invention. Any obvious modifications made by those skilled in the art without departing from the principles and spirit of the present invention should be considered to be included within the scope of protection of the claims of the present invention.
Claims
1. A modified spray-on waterproof material, characterized in that, It includes component A and component B, wherein the weight ratio of component A to component B is 1-1.5:1; Component A comprises the following raw materials in parts by weight: 100 parts of acrylate aqueous solution, 2-10 parts of crosslinking agent, 50-150 parts of filler, 0-5 parts of additives, 0.1-4 parts of reducing agent, and 1-4 parts of coagulant; The coagulant is one or more of calcium chloride, calcium nitrate, sodium chloride, magnesium chloride, and ferric chloride; Component B comprises the following raw materials in parts by weight: The composition is 100 parts emulsified asphalt, 30-60 parts filler, 0.1-3 parts oxidant, and 0-5 parts additives; The mass ratio of emulsified asphalt to coagulant in the modified spray waterproofing material is 100:1-3; The emulsified asphalt is one or both of anionic emulsified asphalt and nonionic emulsified asphalt; The mass concentration of the emulsified asphalt is 40-60%.
2. The modified spray-on waterproof material according to claim 1, characterized in that, The acrylate aqueous solution is one or more of the following: calcium acrylate aqueous solution, magnesium acrylate aqueous solution, magnesium methacrylate aqueous solution, 1,6-hexanediol diacrylate aqueous solution, n-butyl-2-cyanoacrylate aqueous solution, calcium methacrylate aqueous solution, sodium acrylate aqueous solution, and ammonium acrylate aqueous solution. The mass concentration of the acrylate aqueous solution is 20-50%.
3. The modified spray-on waterproof material according to claim 1, characterized in that, The crosslinking agent is one or more of polyethylene glycol allyl ether, polyethylene glycol acrylate, and small molecule acrylate.
4. The modified spray-on waterproof material according to claim 1, characterized in that, The reducing agent is one or more of triethanolamine, diethanolamine, stannous chloride, sodium thiosulfate, sodium bisulfite, sodium dithionite, ferrous sulfate, cobalt naphthenate, and lead isooctanoate.
5. The modified spray-on waterproof material according to claim 1, characterized in that, The oxidant is one or more of potassium persulfate, ammonium persulfate, sodium persulfate, methyl ethyl ketone peroxide, and cyclohexyl peroxide.
6. The modified spray-on waterproof material according to claim 1, characterized in that, The filler includes one or more of the following: fumed silica, precipitated silica, light calcium carbonate, heavy calcium carbonate, kaolin, talc, iron black, phthalocyanine blue, and iron yellow.
7. The modified spray-on waterproof material according to claim 1, characterized in that, The additives include one or more of the following: defoamers, antisettling agents, antioxidants, and dispersants.
8. A method for preparing a modified spray-on waterproof material as described in any one of claims 1-7, characterized in that, The process includes the following steps: Step 1: Mix the acrylate aqueous solution, crosslinking agent, auxiliary agent, coagulant, and reducing agent evenly to obtain component A; Step 2: Mix the emulsified asphalt, additives, and oxidant evenly to obtain component B; Step 3: Use a spraying device to mix and spray components A and B to obtain the modified spray waterproofing material.