A spray-coated quick-setting rubber-loaded waterproof asphalt coating and its preparation method

Abstract

A spray-coated quick-setting rubber-supported waterproof asphalt coating and a preparation method thereof, wherein the spray-coated quick-setting rubber-supported waterproof asphalt coating comprises component A and component B; component A contains matrix asphalt, methacryloylethyl sulfonyl betaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water. The present invention improves adhesion and tensile strength by using a reasonable weight ratio of methacryloylethyl sulfonyl betaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to matrix asphalt. At the same time, the combination of the components of component A also has the advantage of good storage stability.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt, and in particular to a spray-coated quick-setting rubber-loaded waterproof asphalt coating and a preparation method thereof. Background Art

[0002] Spraying quick-setting rubber asphalt waterproof coating is a kind of waterproof, anti-seepage, anti-corrosion and protective coating with excellent performance, which is prepared by special process, ultra-fine, suspended, micro-emulsion modified anionic emulsified asphalt and synthetic high molecular polymer (component A), and then mixed with special curing agent (component B) and reacted. This material has the following specific characteristics: 1. High efficiency, which can make the construction efficient, and can achieve seamless connection without water leakage. For objects with special structures or complex shapes, spraying quick-setting rubber asphalt waterproof coating has unique advantages, and the construction is very simple and convenient. 2. Strong adaptability to the base layer. 3. Simple construction and simple spray surface treatment. 4. Flexible and diverse construction methods, such as spraying, brushing and other construction methods, are very flexible and simple, and can meet the requirements of various environments such as drains, parapets, corners, cracked parts, etc. However, the viscosity and tensile strength of the rubber asphalt coating prepared by the currently reported preparation method are not high.

[0003] Therefore, in view of the shortcomings of the prior art, it is necessary to provide a spray-coated quick-setting rubber-loaded waterproof asphalt coating and a preparation method thereof to solve the shortcomings of the prior art. Summary of the invention

[0004] The purpose of the present invention is to avoid the shortcomings of the prior art and provide a spray-coated quick-setting rubber-loaded waterproof asphalt coating. The spray-coated quick-setting rubber-loaded waterproof asphalt coating has the advantages of good adhesion and high tensile strength.

[0005] The above-mentioned purpose of the present invention is achieved by the following technical measures:

[0006] Provided is a spraying quick-setting rubber-loaded waterproof asphalt coating, comprising component A and component B.

[0007] Preferably, the component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water.

[0008] Preferably, the component B contains calcium nitrate powder, a surfactant and water.

[0009] In the component A, by weight,

[0010] Base asphalt: 100 parts;

[0011] Methacryloylethyl sulfobetaine-styrene polymer: 5 to 10 parts;

[0012] Natural rubber: 10 to 20 parts;

[0013] Graphene modified chloroprene rubber: 5 to 10 parts;

[0014] Anionic emulsifier: 1 to 5 parts;

[0015] Water: 40 to 60 parts.

[0016] In the component B, by weight,

[0017] Calcium nitrate powder: 10 parts;

[0018] Surfactant: 10 to 20 parts;

[0019] Water: 50 to 100 parts.

[0020] In the component A, by weight,

[0021] Base asphalt: 100 parts;

[0022] Methacryloylethyl sulfobetaine-styrene polymer: 8 parts;

[0023] Natural rubber: 16 parts;

[0024] Graphene modified chloroprene rubber: 6 parts;

[0025] Anionic emulsifier: 3.5 parts;

[0026] Water: 55 parts.

[0027] In the component B, in parts by weight,

[0028] Calcium nitrate powder: 10 parts;

[0029] Surfactant: 13 parts;

[0030] Water: 78 parts.

[0031] Preferably, the weight ratio of the component A to the component B is 10:1-3.

[0032] Preferably, the anionic emulsifier is at least one of potassium laurate soap, dodecylbenzene sulfonates, alkyl fatty acid salts or alkyl ether carboxylates.

[0033] Preferably, the above-mentioned methacryloylethyl sulfobetaine-styrene polymer is prepared by the following steps:

[0034] A1, dissolving methacryloylethyl sulfobetaine in water to obtain a methacryloylethyl sulfobetaine aqueous solution;

[0035] A2, add styrene to the aqueous solution of methacryloylethyl sulfobetaine, then add an initiator, and heat to react;

[0036] A3, adding anhydrous isopropanol to precipitate, centrifuging, and freeze-drying the precipitate to obtain the methacryloylethyl sulfobetaine-styrene polymer.

[0037] In the reaction monomers of the methacryloylethyl sulfobetaine-styrene polymer, by weight, 30 parts of methacryloylethyl sulfobetaine and 16 parts of styrene are included.

[0038] Preferably, the graphene-modified chloroprene rubber is prepared by the following steps:

[0039] B1. Add chloroprene rubber into a mixer, add xylene, and then add graphene powder and stir and blend;

[0040] B2. Add a flow enhancer into the stirring tank to promote the precipitation after blending under stirring;

[0041] B3, vulcanizing the blend by a vulcanizing agent to obtain the graphene-modified chloroprene rubber.

[0042] The raw materials for preparing the graphene-modified chloroprene rubber include, by weight, 50 parts of chloroprene rubber, 12 parts of graphene powder, 50 parts of xylene, 1.5 parts of flow promoter, and 2 parts of vulcanizing agent.

[0043] Another object of the present invention is to avoid the shortcomings of the prior art and provide a method for preparing a spray-coated quick-setting rubber-loaded waterproof asphalt coating. The method for preparing the spray-coated quick-setting rubber-loaded waterproof asphalt coating is simple, and the prepared spray-coated quick-setting rubber-loaded waterproof asphalt coating has the advantages of high mechanical strength, high viscosity and high tensile strength.

[0044] A method for preparing the above-mentioned spray quick-setting rubber-loaded waterproof asphalt coating is provided, which is prepared by the following steps:

[0045] S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to the molten base asphalt, developing at a controlled temperature of 165°C to 175°C for 1h to 3h to obtain a mixture I, which is then controlled to 155°C to 165°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve to obtain a solution I;

[0046] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0047] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating.

[0048] The invention discloses a spray-coated quick-setting rubber-supported waterproof asphalt coating and a preparation method thereof, wherein the spray-coated quick-setting rubber-supported waterproof asphalt coating comprises component A and component B; component A comprises base asphalt, methacryloylethyl sulfonyl betaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; and component B comprises calcium nitrate powder, surfactant and water. The invention improves adhesion and tensile strength by using a reasonable weight ratio of methacryloylethyl sulfonyl betaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to base asphalt. At the same time, the combination of the components of component A also has the advantage of good storage stability. DETAILED DESCRIPTION

[0049] The technical solution of the present invention is further described in conjunction with the following examples. Unless otherwise specified, the raw materials used in the following examples are all commercially available products.

[0050] Example 1

[0051] A spray quick-setting rubber-loaded waterproof asphalt coating comprises component A and component B; component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water.

[0052] Wherein, the weight parts of each component are shown in Table 1:

[0053] Table 1. Weight parts of each component of Example 1

[0054]

[0055] Wherein, the methacryloylethyl sulfobetaine-styrene polymer is prepared by the following steps:

[0056] A1, dissolving methacryloylethyl sulfobetaine in water to obtain a methacryloylethyl sulfobetaine aqueous solution;

[0057] A2, add styrene to the aqueous solution of methacryloylethyl sulfobetaine, then add initiator, and heat to 90°C for reaction;

[0058] A3, adding anhydrous isopropanol to precipitate, centrifuging, and freeze-drying the precipitate to obtain the methacryloylethyl sulfobetaine-styrene polymer.

[0059] The graphene modified chloroprene rubber is prepared by the following steps:

[0060] B1. Add chloroprene rubber into a mixer, add xylene, and then add graphene powder and stir and blend. The mixer temperature is 70° C. and the stirring rate is 3300 r / min.

[0061] B2. Add the flow promoter into the stirring tank, raise the temperature to 120°C, and promote the precipitation after blending under stirring;

[0062] B3, vulcanizing the blend by a vulcanizing agent to obtain the graphene-modified chloroprene rubber.

[0063] The preparation method of the spray quick-setting rubber-loaded waterproof asphalt coating is prepared by the following steps:

[0064] S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to the molten base asphalt, developing at a controlled temperature of 165°C for 3 hours to obtain a mixture I, which is then controlled at 155°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve, to obtain a solution I;

[0065] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0066] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating, in which the weight ratio of component A to component B is 10:3.

[0067] Example 2

[0068] A spray quick-setting rubber-loaded waterproof asphalt coating comprises component A and component B; component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water.

[0069] The weight parts of the components are shown in Table 2, and the components not shown are the same as those in Example 1:

[0070] Table 2. Weight parts of each component of Example 2

[0071]

[0072] Among them, the preparation methods of methacryloylethyl sulfobetaine-styrene polymer and graphene-modified chloroprene rubber are the same as those in Example 1.

[0073] The preparation method of the spray quick-setting rubber-loaded waterproof asphalt coating is prepared by the following steps:

[0074] S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to the molten base asphalt, developing at a controlled temperature of 175°C for 1 hour to obtain a mixture I, which is then controlled to 165°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve, to obtain a solution I;

[0075] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0076] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating, in which the weight ratio of component A to component B is 10:1.

[0077] Example 3

[0078] A spray quick-setting rubber-loaded waterproof asphalt coating comprises component A and component B; component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water.

[0079] The weight parts of the components are shown in Table 3, and the components not shown are the same as those in Example 1:

[0080] Table 3. Weight parts of each component of Example 3

[0081]

[0082]

[0083] Among them, the preparation methods of methacryloylethyl sulfobetaine-styrene polymer and graphene-modified chloroprene rubber are the same as those in Example 1.

[0084] The preparation method of the spray quick-setting rubber-loaded waterproof asphalt coating is prepared by the following steps:

[0085] S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to the molten base asphalt, developing at a controlled temperature of 170°C for 2 hours to obtain a mixture I, which is then controlled to 160°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve, to obtain a solution I;

[0086] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0087] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating, in which the weight ratio of component A to component B is 10:1.8.

[0088] Example 4

[0089] A spray quick-setting rubber-loaded waterproof asphalt coating comprises component A and component B; component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water.

[0090] The weight parts of the components are shown in Table 4, and the components not shown are the same as those in Example 1:

[0091] Table 4. Weight parts of each component of Example 4

[0092]

[0093] Among them, the preparation methods of methacryloylethyl sulfobetaine-styrene polymer and graphene-modified chloroprene rubber are the same as those in Example 1.

[0094] The preparation method of the spray quick-setting rubber-loaded waterproof asphalt coating is prepared by the following steps:

[0095] S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to the molten base asphalt, developing at a controlled temperature of 170°C for 2 hours to obtain a mixture I, which is then controlled to 160°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve, to obtain a solution I;

[0096] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0097] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating, in which the weight ratio of component A to component B is 10:1.8.

[0098] Comparative Example 1

[0099] A spray quick-setting rubber-loaded waterproof asphalt coating comprises component A and component B; component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water.

[0100] The weight parts of the components are shown in Table 5, and the components not shown are the same as those in Example 1:

[0101] Table 5. Weight parts of each component of Comparative Example 1

[0102]

[0103]

[0104] Among them, the preparation methods of methacryloylethyl sulfobetaine-styrene polymer and graphene-modified chloroprene rubber are the same as those in Example 1.

[0105] The preparation method of the spray quick-setting rubber-loaded waterproof asphalt coating is prepared by the following steps:

[0106] S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to the molten base asphalt, developing at a controlled temperature of 170°C for 2 hours to obtain a mixture I, which is then controlled to 160°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve, to obtain a solution I;

[0107] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0108] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating, in which the weight ratio of component A to component B is 10:1.8.

[0109] Comparative Example 2

[0110] A spray quick-setting rubber-loaded waterproof asphalt coating comprises component A and component B; component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water.

[0111] The weight parts of the components are shown in Table 6, and the components not shown are the same as those in Example 1:

[0112] Table 6. Weight parts of each component of Comparative Example 2

[0113]

[0114] Among them, the preparation methods of methacryloylethyl sulfobetaine-styrene polymer and graphene-modified chloroprene rubber are the same as those in Example 1.

[0115] The preparation method of the spray quick-setting rubber-loaded waterproof asphalt coating is prepared by the following steps:

[0116] S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to the molten base asphalt, developing at a controlled temperature of 170°C for 2 hours to obtain a mixture I, which is then controlled to 160°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve, to obtain a solution I;

[0117] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0118] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating, in which the weight ratio of component A to component B is 10:1.8.

[0119] Comparative Example 3

[0120] A spray quick-setting rubber-loaded waterproof asphalt coating comprises component A and component B; component A contains base asphalt, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water.

[0121] The weight parts of the components are shown in Table 7, and the components not shown are the same as those in Example 1:

[0122] Table 7. Weight parts of each component of Comparative Example 3

[0123]

[0124] Wherein, the preparation method of graphene-modified chloroprene rubber is the same as that in Example 1.

[0125] The preparation method of the spray quick-setting rubber-loaded waterproof asphalt coating is prepared by the following steps:

[0126] S1, heating the matrix asphalt to make it molten; then adding natural rubber and graphene-modified chloroprene rubber to the molten matrix asphalt, developing at a controlled temperature of 170°C for 2 hours to obtain a mixture I, which is then controlled to 160°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve, to obtain a solution I;

[0127] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0128] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating, in which the weight ratio of component A to component B is 10:1.8.

[0129] Comparative Example 4

[0130] A spray quick-setting rubber-loaded waterproof asphalt coating comprises component A and component B; component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water.

[0131] The weight parts of the components are shown in Table 8, and the components not shown are the same as those in Example 1:

[0132] Table 8. Weight parts of each component of Comparative Example 3

[0133]

[0134]

[0135] The preparation methods of the methacryloylethyl sulfobetaine-styrene polymer and the natural rubber are the same as those in Example 1.

[0136] The preparation method of the spray quick-setting rubber-loaded waterproof asphalt coating is prepared by the following steps:

[0137] S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer and graphene-modified chloroprene rubber to the molten base asphalt, developing at a controlled temperature of 170°C for 2 hours to obtain a mixture I, which is then controlled to 160°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve, to obtain a solution I;

[0138] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0139] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating, in which the weight ratio of component A to component B is 10:1.8.

[0140] Comparative Example 5

[0141] A spraying quick-setting rubber-loaded waterproof asphalt coating comprises component A and component B; component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, anionic emulsifier and water; component B contains calcium nitrate powder, surfactant and water.

[0142] The weight parts of the components are shown in Table 9, and the components not shown are the same as those in Example 1:

[0143] Table 9. Weight parts of each component of Comparative Example 5

[0144]

[0145] The methacryloylethyl sulfobetaine-styrene polymer is the same as that in Example 1.

[0146] The preparation method of the spray quick-setting rubber-loaded waterproof asphalt coating is prepared by the following steps:

[0147] S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer and natural rubber to the molten base asphalt, developing at a controlled temperature of 170°C for 2 hours to obtain a mixture I, which is then controlled at 160°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve, to obtain a solution I;

[0148] S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion, thereby obtaining the component A;

[0149] S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating, in which the weight ratio of component A to component B is 10:1.8.

[0150] Effect example

[0151] 1. Performance of spray quick-setting rubber-loaded waterproof asphalt coating

[0152] The quick-setting rubber-bearing waterproof asphalt coating sprayed on Examples 1-4 and Comparative Examples 1-5 was tested for the physical and mechanical properties of the spray-coated rubber asphalt waterproof material specially used for building construction (structure) in accordance with the enterprise standard of China Railway Corporation "Q / CR 517.2-2016 Railway Engineering Spray Film Waterproofing Materials Part 2: Spray Rubber Asphalt". The results are shown in Tables 10 and 11.

[0153] Table 10 Performance test results of spray quick-setting rubber-loaded waterproof asphalt coatings of Examples 1-4

[0154]

[0155]

[0156] Table 11. Performance test results of spray quick-setting rubber-loaded waterproof asphalt coatings of comparative examples 1-5

[0157]

[0158]

[0159] It can be seen from the data in Tables 10 and 11 that the spray quick-setting rubber-bearing waterproof asphalt coating of the present invention fully meets the physical and mechanical requirements of the spray rubber asphalt waterproof material for housing construction (structure) in the enterprise standard of China Railway Corporation "Q / CR 517.2-2016 Railway Engineering Spraying Waterproof Materials Part 2: Spraying Rubber Asphalt", and the present invention uses methyl acryloylethyl sulfobetaine-styrene polymer, natural rubber, and graphene-modified chloroprene rubber to make the spray quick-setting rubber-bearing waterproof asphalt coating have a maximum bonding strength of 1.6 MPa for a wet base surface, a maximum bonding strength of 1.4 MPa for a dry base surface, a tensile strength of up to 1.63 MPa, and a tensile elongation at break of up to 1096%. Therefore, the spray quick-setting rubber-bearing waterproof asphalt coating of the present invention has the advantages of good adhesion and high tensile strength.

[0160] 2. Storage stability of component A

[0161] Component A of Examples 1-4 and Comparative Examples 1-5 was sealed and stored at 40°C to obtain stability data. The results are shown in Table 12.

[0162] Table 12, Stability data of component A of Examples 1-4 and Comparative Examples 1-5

[0163]

[0164] It can be seen from the data in Table 12 that component A of the present invention does not undergo sedimentation even when stably stored at 40° C. for 120 days, which is significantly better than the comparative example. Therefore, component A of the present invention has the advantage of high storage stability.

[0165] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A spray-coated quick-setting rubber-loaded waterproof asphalt coating, characterized in that: It includes component A and component B; The component A contains base asphalt, methacryloylethyl sulfobetaine-styrene polymer, natural rubber, graphene-modified chloroprene rubber, anionic emulsifier and water; The component B contains calcium nitrate powder, a surfactant and water; In the component A, by weight, Base asphalt: 100 parts; Methacryloylethyl sulfobetaine-styrene polymer: 5 to 10 parts; Natural rubber: 10 to 20 parts; Graphene modified chloroprene rubber: 5 to 10 parts; Anionic emulsifier: 1 to 5 parts; Water: 40 to 60 parts; In the component B, in parts by weight, Calcium nitrate powder: 10 parts; Surfactant: 10 to 20 parts; Water: 50 to 100 parts; The weight ratio of the component A to the component B is 10:1-3.

2. The spray-coated quick-setting rubber-loaded waterproof asphalt coating according to claim 1, characterized in that: In the component A, by weight, Base asphalt: 100 parts; Methacryloylethyl sulfobetaine-styrene polymer: 8 parts; Natural rubber: 16 parts; Graphene modified chloroprene rubber: 6 parts; Anionic emulsifier: 3.5 parts; Water: 55 parts; In the component B, in parts by weight, Calcium nitrate powder: 10 parts; Surfactant: 13 parts; Water: 78 parts.

3. The spray-coated quick-setting rubber-loaded waterproof asphalt coating according to claim 1, characterized in that: The anionic emulsifier is at least one of potassium laurate soap, dodecylbenzene sulfonates, alkyl fatty acid salts or alkyl ether carboxylates.

4. The spray-coated quick-setting rubber-loaded waterproof asphalt coating according to claim 1, characterized in that: The methacryloylethyl sulfobetaine-styrene polymer is prepared by the following steps: A1, dissolving methacryloylethyl sulfobetaine in water to obtain a methacryloylethyl sulfobetaine aqueous solution; A2, add styrene to the aqueous solution of methacryloylethyl sulfobetaine, then add an initiator, and heat to react; A3, adding anhydrous isopropanol to precipitate, centrifuging, and freeze-drying the precipitate to obtain the methacryloylethyl sulfobetaine-styrene polymer.

5. The spray-coated quick-setting rubber-loaded waterproof asphalt coating according to claim 4, characterized in that: The reaction monomers of the methacryloylethyl sulfobetaine-styrene polymer include, by weight, 30 parts of methacryloylethyl sulfobetaine, 16 parts of styrene, 0.5 parts of initiator, 120 parts of water and 80 parts of isopropanol.

6. The spray-coated quick-setting rubber-loaded waterproof asphalt coating according to claim 1, characterized in that: The graphene-modified chloroprene rubber is prepared by the following steps: B1. Add chloroprene rubber into a mixer, add xylene, and then add graphene powder and stir and blend; B2. Add a flow enhancer into the stirring tank to promote the precipitation after blending under stirring; B3, vulcanizing the blend with a vulcanizing agent to obtain the graphene-modified chloroprene rubber.

7. The spray-coated quick-setting rubber-loaded waterproof asphalt coating according to claim 6, characterized in that: The raw materials for preparing the graphene-modified chloroprene rubber include, by weight, 50 parts of chloroprene rubber, 12 parts of graphene powder, 50 parts of xylene, 1.5 parts of flow promoter, and 2 parts of vulcanizing agent.

8. A method for preparing the spray-coated quick-setting rubber-loaded waterproof asphalt coating according to any one of claims 1 to 7, characterized in that: Prepared by the following steps: S1, heating the base asphalt to make it molten; then adding methacryloylethyl sulfobetaine-styrene polymer, natural rubber and graphene-modified chloroprene rubber to the molten base asphalt, developing at a controlled temperature of 165°C to 175°C for 1h to 3h to obtain a mixture I, which is then controlled to 155°C to 165°C for standby use; at the same time, adding an anionic emulsifier into water to dissolve to obtain a solution I; S2, respectively conveying the mixture I and the solution I to a colloid mill, and after being uniformly dispersed and ground by the colloid mill, forming an oil-in-water emulsion to obtain the component A; S4. During construction, a dual-nozzle synchronous pressure atomizing sprayer is used to atomize and mix component A and component B in the air. The two components interact with each other to form a sprayable quick-setting rubber-borne waterproof asphalt coating.

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