Composition for modified bitumen cap sheet, modified bitumen cap sheet, method of making and use thereof, energy saving waterproofing membrane and use thereof

Abstract

The application relates to the field of building waterproof materials and discloses a modified asphalt coating composition, a modified asphalt coating and a preparation method and application thereof, and an energy-saving waterproof coiled material and application thereof. The composition contains a main agent and an auxiliary agent, the main agent comprises base bitumen, epoxy soybean oil, star-shaped SBS, thermoplastic polyurethane elastomer, butadiene styrene rubber, hydrogenated butyl nitrile rubber and a first component; the content of the base bitumen is 40-55 wt% based on the total weight of the composition, the content of the epoxy soybean oil is 5-10 wt%, the content of the star-shaped SBS is 3-5 wt%, the content of the thermoplastic polyurethane elastomer is 1-8 wt%, the content of the butadiene styrene rubber is 1-5 wt%, the content of the hydrogenated butyl nitrile rubber is 5-10 wt%, and the content of the first component is 1-2 wt%. The modified asphalt waterproof coiled material has the advantages of strong adhesion, good tensile property and weather resistance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building waterproof materials, in particular to a modified asphalt coating composition, a modified asphalt coating and a preparation method and application thereof, an energy-saving waterproof roll material and application thereof. BACKGROUND

[0002] Modified asphalt waterproof roll material is widely used in waterproofing of roofs, basements, bathrooms and other waterproofing projects of industrial and civil buildings, as well as in waterproofing and moisture-proofing of roof gardens, roads, bridges, tunnels, parking lots, swimming pools and other projects. As the connection between the project foundation and the building without leakage, it is the barrier of the entire project waterproofing.

[0003] Modified asphalt refers to asphalt binder prepared by adding modifiers such as rubber, high molecular polymer or other fillers, or taking measures such as mild oxidation of asphalt to improve the performance of asphalt or asphalt mixture. The existing hot melt waterproof roll material mainly uses styrene butadiene block copolymer and recycled tire rubber powder as raw materials, and oil as a modifier. When the roll material is constructed, if the amount of tire rubber powder added is small, the heat resistance of the roll material is not enough; if the amount of tire rubber powder added is large, the oil output during construction is less, and the roll material and the base surface cannot easily achieve full adhesion waterproof effect.

[0004] In order to further improve the adhesion and aging resistance of the existing waterproof roll material, the research on modified asphalt has attracted the attention of researchers.

[0005] CN113528018A discloses a modified asphalt coating and a preparation method and roll material thereof. The asphalt coating includes the following components by weight: 40-50 parts by weight of base asphalt, 1-10 parts by weight of oil, 3-10 parts by weight of thermoplastic elastomer and styrene-butadiene rubber, 0.5-4 parts by weight of plasticizer, 1-5 parts by weight of coupling agent, 5-12 parts by weight of rubber powder, and 25-40 parts by weight of filler. The oil is aromatic oil and / or base oil, the coupling agent includes silane coupling agent and / or organic metal ester coupling agent, and the filler includes at least one of talc, heavy calcium carbonate, montmorillonite and kaolin. The modified asphalt coating has excellent aging resistance and durability, but the product has high cohesion, the oil output during baking construction is general, long time baking and heating are required, which causes energy waste, and full adhesion effect is not easy to achieve after construction.

[0006] Therefore, it is of great significance to develop a new type of modified asphalt coating to prepare a modified asphalt waterproof roll material with strong adhesion, good tensile property and weather resistance, and energy saving and environmental protection. SUMMARY

[0007] The purpose of the present application is to solve the problems of low adhesion and poor weather resistance of the existing waterproof roll material.

[0008] To achieve the above object, the present application provides a modified asphalt coating composition in one aspect, which contains a main agent and an auxiliary agent, wherein the main agent comprises base asphalt, epoxy soybean oil, star SBS, thermoplastic polyurethane elastomer, styrene butadiene rubber, hydrogenated nitrile rubber and a first component.

[0009] The content of the base asphalt is 40-55wt% based on the total weight of the composition, the content of the epoxy soybean oil is 5-10wt%, the content of the star SBS is 3-5wt%, the content of the thermoplastic polyurethane elastomer is 1-8wt%, the content of the styrene butadiene rubber is 1-5wt%, the content of the hydrogenated nitrile rubber is 5-10wt%, and the content of the first component is 1-2wt%.

[0010] The first component contains bis-(γ-triethoxysilylpropyl)-polysulfide, and the content of the bis-(γ-triethoxysilylpropyl)-polysulfide is 40-100wt% based on the total weight of the first component.

[0011] The second aspect of the present application provides a method for preparing a modified asphalt coating, which uses the components in the composition of the first aspect, and the method comprises the following steps:

[0012] (1) mixing the base asphalt and the epoxy soybean oil to obtain a mixture I;

[0013] (2) mixing the mixture I with the star SBS and the styrene butadiene rubber to obtain a mixture II;

[0014] (3) mixing the mixture II with the hydrogenated nitrile rubber and the thermoplastic polyurethane elastomer to obtain a mixture III;

[0015] (4) mixing the mixture III with the first component to obtain a mixture IV;

[0016] (5) mixing the mixture IV with the filler to obtain the modified asphalt coating.

[0017] The third aspect of the present application provides a modified asphalt coating prepared by the method of the second aspect.

[0018] The fourth aspect of the present application provides the use of the modified asphalt coating of the third aspect in preparing energy-saving waterproofing membranes.

[0019] The fifth aspect of the present application provides an energy-saving waterproofing membrane, which comprises a base fabric, a coating material and a release film, wherein the coating material is the modified asphalt coating material according to the third aspect.

[0020] The sixth aspect of the present application provides the use of the energy-saving waterproofing membrane according to the fifth aspect in building waterproofing.

[0021] Through the above technical solution, the present application has at least the following advantages:

[0022] (1) The energy-saving waterproofing membrane provided by the present application has excellent bonding performance and weather resistance, and also has good tensile strength and tear resistance, thereby greatly reducing the risk of deformation.

[0023] (2) The energy-saving waterproofing membrane provided by the present application can form a good full-bonding effect with the base surface during construction, thereby effectively improving the construction efficiency; and the energy-saving waterproofing membrane can quickly release oil during fire roasting construction, thereby avoiding long-time heating and effectively reducing the emission of greenhouse gases, and thus has the characteristics of energy saving and environmental protection. DETAILED DESCRIPTION

[0024] The endpoints of the ranges and any values disclosed herein are not limited to the precise values recited as the exact dimensions are not critical to the present application. The endpoints of the ranges and any values are provided as approximations only, and are understood to be open-ended. Thus, the endpoints of the ranges and any values are not to be understood as being limited to the precise values recited as essentially any value up to and including the value that is recited, or any value down to and including the value that is recited, is contemplated. Any numerical range recited is intended to include all sub-ranges subsumed therein. For ranges including an endpoint, other ranges from the stated endpoint are also intended. Sub-ranges of the minimum and maximum values stated are also contemplates, as endpoints.

[0025] As described above, the first aspect of the present application provides a modified asphalt coating material composition, which comprises a main agent and an auxiliary agent, wherein the main agent comprises base asphalt, epoxy soybean oil, star-shaped SBS, thermoplastic polyurethane elastomer, styrene butadiene rubber, hydrogenated nitrile rubber and a first component.

[0026] The content of the base asphalt is 40-55wt%, the content of the epoxy soybean oil is 5-10wt%, the content of the star-shaped SBS is 3-5wt%, the content of the thermoplastic polyurethane elastomer is 1-8wt%, the content of the styrene butadiene rubber is 1-5wt%, the content of the hydrogenated nitrile rubber is 5-10wt%, and the content of the first component is 1-2wt%, based on the total weight of the composition.

[0027] The first component contains bis-(gamma-triethoxysilylpropyl)-polysulfide, and the content of the bis-(gamma-triethoxysilylpropyl)-polysulfide is 40-100wt%, based on the total weight of the first component.

[0028] Preferably, the content of the base pitch is 40-45wt%, the content of the epoxy soybean oil is 8-10wt%, the content of the star SBS is 3-4wt%, the content of the thermoplastic polyurethane elastomer is 1-5wt%, the content of the butadiene-styrene rubber is 3-5wt%, the content of the hydrogenated butadiene-acrylonitrile rubber is 8-10wt%, and the content of the first component is 1.5-2wt%, based on the total weight of the composition.

[0029] Preferably, the content of the acrylonitrile structural unit in the hydrogenated butadiene-acrylonitrile rubber is 36-50wt%, and the Mooney viscosity ML(1+4)100℃ is 58-72.

[0030] Preferably, the thermoplastic polyurethane elastomer is a polyester type thermoplastic polyurethane elastomer, and the melting temperature of the thermoplastic polyurethane elastomer is 110℃-130℃. The inventors of the present application have found that in this preferred case, the energy-saving waterproofing membrane provided by the present application is more likely to achieve full adhesion with the base surface, and has more excellent adhesion strength.

[0031] Preferably, the first component is a mixture of bis-(γ-triethoxysilylpropyl)-polysulfide and carbon black with a mass ratio of 1:0.8-1.2, and the bis-(γ-triethoxysilylpropyl)-polysulfide is bis-(γ-triethoxysilylpropyl)-disulfide and / or bis-(γ-triethoxysilylpropyl)-tetrasulfide.

[0032] The star SBS according to the present application is a styrene-butadiene-styrene block copolymer with a star structure.

[0033] Preferably, the content of the styrene structural unit and the content of the butadiene structural unit in the star SBS are in a weight ratio of 0.25-0.43:1.

[0034] Further preferably, the content of the rubber in the butadiene-styrene rubber is 92-95wt%, the Mooney viscosity ML(1+4)100℃ is 72-80, and the content of the styrene structural unit in the butadiene-styrene rubber is 24-30wt%.

[0035] More preferably, the base pitch is 70# pitch and / or 90# pitch, and the softening point of the 70# pitch and the 90# pitch is 45-60℃.

[0036] Preferably, the auxiliary agent includes a filler, and the content of the filler is 20-30wt%, based on the total weight of the composition.

[0037] Further preferably, the average particle diameter of the filler is 60-90μm.

[0038] More preferably, the filler is selected from the group consisting of light calcium carbonate and / or talcum powder.

[0039] As mentioned previously, the second aspect of the present application provides a method for preparing a modified asphalt coating, which method applies the components in the composition of the first aspect described previously, and which method comprises:

[0040] (1) first mixing a base asphalt and an epoxy soybean oil to obtain a mixture I;

[0041] (2) second mixing the mixture I with a star SBS and a styrene-butadiene rubber to obtain a mixture II;

[0042] (3) third mixing the mixture II with a hydrogenated nitrile rubber and a thermoplastic polyurethane elastomer to obtain a mixture III;

[0043] (4) fourth mixing the mixture III with the first component to obtain a mixture IV;

[0044] (5) fifth mixing the mixture IV with a filler to obtain the modified asphalt coating.

[0045] According to a specific embodiment, in step (1), the conditions of the first mixing include: a temperature of 150-170℃, and a time of 15-25min.

[0046] According to a specific embodiment, in step (2), the conditions of the second mixing include: a temperature of 150-170℃, a stirring rate of 1200-1500r / min, and a time of 60-120min.

[0047] According to a preferred specific embodiment, in step (2), the mixture I is first contacted with the star SBS for 40-50min, and then the styrene-butadiene rubber is added for the second mixing.

[0048] According to a specific embodiment, in step (3), the conditions of the third mixing include: a temperature of 180-190℃, a stirring rate of 1200-1500r / min, and a time of 160-200min.

[0049] According to a specific embodiment, in step (4), the conditions of the fourth mixing include: a temperature of 180-190℃, a stirring rate of 1200-1500r / min, and a time of 20-40min.

[0050] According to a specific embodiment, in step (5), the conditions of the fifth mixing include: a temperature of 180-190℃, a stirring rate of 1200-1500r / min, and a time of 40-60min.

[0051] As described above, the third aspect of the present application provides a modified asphalt coating prepared by the method of the aforementioned second aspect.

[0052] As described above, the fourth aspect of the present application provides an application of the modified asphalt coating of the aforementioned third aspect in preparing an energy-saving waterproofing membrane.

[0053] As described above, the fifth aspect of the present application provides an energy-saving waterproofing membrane, which comprises a base fabric, a coating, and a release film, wherein the coating is the modified asphalt coating of the aforementioned third aspect.

[0054] Preferably, the release film is a PE film.

[0055] Preferably, the base fabric has a grammage of 250-270 g / m 2 Polyester filament base fabric.

[0056] According to a preferred embodiment, the method for preparing the energy-saving waterproofing membrane comprises the following steps:

[0057] (S1) transporting the polyester filament base fabric treated by drying to a pre-dipping pool for dipping, to obtain an intermediate I, wherein the pre-dipping pool contains a mixture of 70# asphalt, 10# asphalt, and PP wax at a weight ratio of 4-5:4-5:1;

[0058] (S2) continuously transporting the intermediate I to a discharge port, wherein two rollers with a spacing of 3.5-4.5 mm are arranged in front of the discharge port, and the modified asphalt coating of the present application is compressed with the intermediate I to obtain an intermediate II;

[0059] (S3) after the intermediate II is cooled in a water pool, a PE film is covered on the upper and lower surfaces of the intermediate II, and after compaction, cooling, edge cutting, and winding, the energy-saving waterproofing membrane is obtained, wherein the water pool cooling temperature is 30-40℃.

[0060] As described above, the sixth aspect of the present application provides an application of the energy-saving waterproofing membrane of the aforementioned fifth aspect in building waterproofing.

[0061] The present application will be described in detail below by way of examples. In the following examples, various instruments and materials used are commercially available unless otherwise specified.

[0062] Some of the materials used in the following examples and their sources are as follows:

[0063] Base asphalt:

[0064] Base asphalt-I: 70# asphalt, softening point is 46℃, purchased from Sinopec Maoming Petrochemical Branch;

[0065] Base asphalt-II: 90# asphalt, softening point is 44℃, purchased from Sinopec Maoming Petrochemical Branch;

[0066] Epoxy soybean oil: grade is 8013-07-8, purchased from Nantong Runfeng Petroleum Chemical Co., Ltd.;

[0067] Star SBS:

[0068] Star SBS-I: block mass ratio of styrene structural unit / butadiene structural unit is 23 / 77, grade is American Kraton D1116, purchased from Dongguan Yucheng Plastic Co., Ltd.;

[0069] Star SBS-II: block mass ratio of styrene structural unit / butadiene structural unit is 33 / 64, grade is Li Changrong 3412, purchased from Dongguan Yucheng Plastic Co., Ltd.;

[0070] Thermoplastic polyurethane elastomer:

[0071] Thermoplastic polyurethane elastomer-I: polyester type, melting temperature is 110℃, grade is American Lubrizol 58213, purchased from Suzhou Yishifeng Plastic Co., Ltd.;

[0072] Thermoplastic polyurethane elastomer-II: polyether type, melting temperature is 140℃, grade is American Lubrizol D91T80, purchased from Suzhou Yishifeng Plastic Co., Ltd.;

[0073] Styrene-butadiene rubber:

[0074] Styrene-butadiene rubber-I: rubber content is 95wt%, Mooney viscosity ML(1+4)100℃ is 75, content of styrene structural unit is 24wt%, grade is HK-B03, purchased from Shandong Haifang Rubber Technology Co., Ltd.;

[0075] Styrene-butadiene rubber-II: rubber content is 90wt%, Mooney viscosity ML(1+4)100℃ is 70, content of styrene is 22.5, grade is HK-B04, purchased from Shandong Haifang Rubber Technology Co., Ltd.;

[0076] First component:

[0077] First component-I: mixture of double-(γ-triethoxysilyl propyl)-tetrasulfide and carbon black with mass ratio of 1:1, grade is silane coupling agent RSi-B, purchased from Nanjing Shuguang Chemical Group Co., Ltd.;

[0078] First component-II: Bis-(gamma-triethoxysilylpropyl)-tetrasulfide, model Si-69, purchased from Qufu Yishun Chemical Co., Ltd.

[0079] Hydrogenated nitrile rubber:

[0080] Hydrogenated nitrile rubber-I: The content of acrylonitrile structural unit is 44wt%, the Mooney viscosity ML(1+4)100℃ is 65, the brand is HNBR1000L, purchased from Japan Zeon Corporation;

[0081] Hydrogenated nitrile rubber-II: The content of acrylonitrile structural unit is 25wt%, the Mooney viscosity ML(1+4)100℃ is 70, the brand is HNBR3310, purchased from Japan Zeon Corporation;

[0082] Nitrile rubber: Model LR815, purchased from Chiluoma New Material Technology Co., Ltd.

[0083] Filler:

[0084] Light calcium carbonate: The average particle diameter is 70μm, purchased from Lingshou County Yongshun Mineral Product Processing Factory;

[0085] Talc powder: The average particle diameter is 90μm, purchased from Lingshou County Yongshun Mineral Product Processing Factory.

[0086] In the following preparation examples, the total weight of the modified asphalt coating composition is 1000g.

[0087] Preparation example 1

[0088] This preparation example is used to illustrate the preparation of the modified asphalt coating provided by the present application, and the specific components are referred to those listed in Table 1, including the following steps:

[0089] a1: Mix base asphalt and epoxy soybean oil at 160℃ for 20min to obtain mixture I;

[0090] a2: At 160℃, start stirring with the speed of 1400r / min, mix mixture I with star-shaped SBS for 50min, then add styrene-butadiene rubber and mix for 40min to obtain mixture II;

[0091] a3: Adjust the temperature to 185℃ and keep the stirring speed at 1400r / min, mix mixture II with hydrogenated nitrile rubber and thermoplastic polyurethane elastomer for 180min to obtain mixture III;

[0092] a4: Keep the temperature at 185℃ and the stirring speed at 1400r / min, mix mixture III with the first component for 30min to obtain mixture IV;

[0093] a5: keep the temperature at 185°C, rotate at 1400r / min, stir the mixture IV with the filler for 50min, and obtain the modified asphalt coating material A1.

[0094] Preparation Example 2

[0095] The similar method as Preparation Example 1 was used, except that the types or amounts of the components were not the same, and the rest was the same as Preparation Example 1. See Table 1 for details.

[0096] Table 1

[0097]

[0098]

[0099] Preparation Example 3

[0100] The similar method as Preparation Example 1 was used, except that equal weight of the first component-II was used instead of the first component-I in Preparation Example 1, and the rest was the same as Preparation Example 1. Modified asphalt coating material A3 was obtained.

[0101] Preparation Example 4

[0102] The similar method as Preparation Example 1 was used, except that equal weight of the thermoplastic polyurethane elastomer-II was used instead of the thermoplastic polyurethane elastomer-I in Preparation Example 1, and the rest was the same as Preparation Example 1. Modified asphalt coating material A4 was obtained.

[0103] Preparation Example 5

[0104] The similar method as Preparation Example 1 was used, except that equal weight of the butadiene styrene rubber-II was used instead of the butadiene styrene rubber-I in Preparation Example 1, and the rest was the same as Preparation Example 1. Modified asphalt coating material A5 was obtained.

[0105] Preparation Example 6

[0106] The similar method as Preparation Example 1 was used, except that equal weight of the star-shaped SBS-II was used instead of the star-shaped SBS-I in Preparation Example 1, and the rest was the same as Preparation Example 1. Modified asphalt coating material A6 was obtained.

[0107] Preparation Example 7

[0108] The similar method as Preparation Example 1 was used, except that equal weight of the hydrogenated butadiene acrylonitrile rubber-II was used instead of the hydrogenated butadiene acrylonitrile rubber-I in Preparation Example 1, and the rest was the same as Preparation Example 1. Modified asphalt coating material A7 was obtained.

[0109] Comparative Preparation Example 1

[0110] The method similar to that in Preparation Example 1 was performed, except that equal weight of butyronitrile rubber was used to replace hydrogenated butyronitrile rubber-I in Preparation Example 1, and the rest was the same as in Preparation Example 1, to obtain modified asphalt coating D-A1.

[0111] Comparative Preparation Example 2

[0112] The method similar to that in Preparation Example 1 was performed, except that the amount of star-shaped SBS-I was changed to 10 g, and the amount of filler was adjusted to 280 g, and the rest was the same as in Preparation Example 1, to obtain modified asphalt coating D-A2.

[0113] Comparative Preparation Example 3

[0114] The method similar to that in Preparation Example 1 was performed, except that the amount of hydrogenated butyronitrile rubber-I was changed to 40 g, and the amount of filler was adjusted to 290 g, and the rest was the same as in Preparation Example 1, to obtain modified asphalt coating D-A3.

[0115] Comparative Preparation Example 4

[0116] The method similar to that in Preparation Example 1 was performed, except that the amount of thermoplastic polyurethane elastomer-I was changed to 5 g, and the amount of filler was adjusted to 295 g, and the rest was the same as in Preparation Example 1, to obtain modified asphalt coating D-A4.

[0117] Example 1

[0118] This example is used to illustrate the energy-saving waterproofing membrane provided by the present application, and the preparation method is as follows:

[0119] S1, the polyester filament tire base cloth treated by drying was transported to a pre-dipping pool by a roller for 10 seconds of dipping, and an extrusion roller was used to extrude the excess pre-dipping material, to obtain intermediate I, and the pre-dipping pool contained a mixture of 70# asphalt, 10# asphalt and PP wax in a weight ratio of 4.5:4.5:1;

[0120] S2, the above intermediate I was continuously transported to the discharge port of the modified asphalt coating A1 provided by the present application, and there were two upper and lower rollers with a spacing of 4 mm in front of the discharge port, the modified asphalt coating A1 was compressed with the intermediate I to obtain intermediate II;

[0121] S3, after the intermediate II was cooled in a water pool, a PE film was covered on the upper surface and the lower surface of the above intermediate II, and after compaction, cooling, edge cutting and winding, the energy-saving waterproofing membrane was obtained, and the water pool cooling temperature was 35°C.

[0122] Examples 2-7

[0123] The process conditions similar to those in Example 1 were used, except that:

[0124] Example 2 uses modified asphalt coating A2 to replace modified asphalt coating A1 in Example 1;

[0125] Example 3 uses modified asphalt coating A3 to replace modified asphalt coating A1 in Example 1;

[0126] Example 4 uses modified asphalt coating A4 to replace modified asphalt coating A1 in Example 1;

[0127] Example 5 uses modified asphalt coating A5 to replace modified asphalt coating A1 in Example 1;

[0128] Example 6 uses modified asphalt coating A6 to replace modified asphalt coating A1 in Example 1;

[0129] Example 7 uses modified asphalt coating A7 to replace modified asphalt coating A1 in Example 1.

[0130] Comparative Examples 1-4

[0131] The process conditions are similar to those in Example 1, except that:

[0132] Comparative Example 1 uses modified asphalt coating D-A1 to replace modified asphalt coating A1 in Example 1;

[0133] Comparative Example 2 uses modified asphalt coating D-A2 to replace modified asphalt coating A1 in Example 1.

[0134] Comparative Example 3 uses modified asphalt coating D-A3 to replace modified asphalt coating A1 in Example 1.

[0135] Comparative Example 4 uses modified asphalt coating D-A4 to replace modified asphalt coating A1 in Example 1.

[0136] Test Examples

[0137] The energy-saving waterproofing membranes prepared in the examples and comparative examples are tested for performance in accordance with the national standard GB18242-2008, including the seam peel strength, maximum tensile force, nail rod tear strength, maximum tensile force retention rate after heat aging, and low temperature resistance of the waterproofing membrane;

[0138] The heat aging treatment is carried out by heating the energy-saving waterproofing membrane at 80°C for 10 days;

[0139] The light aging treatment is carried out by using a xenon arc lamp method to accumulate the light exposure time of the energy-saving waterproofing membrane for 30 days;

[0140] Oil bleeding effect test: cut a 10cm*10cm energy-saving waterproofing membrane sample, place it 2cm away from the flame, and observe the adhesion of the energy-saving waterproofing membrane to the wood after 10 seconds of flame baking and immediate adhesion to the wood.

[0141] The specific test results are shown in Table 2.

[0142] Table 2

[0143]

[0144]

[0145] As can be seen from the results in Table 2, the energy-saving waterproofing membrane prepared by the application has more excellent adhesion, tensile property and tear resistance, and good weather resistance, and can effectively achieve full adhesion to the base surface during construction.

[0146] The preferred embodiments of the application are described in detail above, but the application is not limited thereto. Within the technical concept of the application, various simple modifications can be made to the technical solutions of the application, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be considered as disclosed by the application and fall within the protection scope of the application.

Claims

1. A composition for modified bitumen coating, characterized in that, The composition contains a main agent and an auxiliary agent, wherein the main agent includes a base asphalt, epoxidized soybean oil, star-shaped SBS, thermoplastic polyurethane elastomer, styrene-butadiene rubber, hydrogenated nitrile rubber and a first component; Based on the total weight of the composition, the content of the base bitumen is 40-55 wt%, the content of the epoxidized soybean oil is 5-10 wt%, the content of the star-shaped SBS is 3-5 wt%, the content of the thermoplastic polyurethane elastomer is 1-8 wt%, the content of the styrene-butadiene rubber is 1-5 wt%, the content of the hydrogenated nitrile butadiene rubber is 5-10 wt%, and the content of the first component is 1-2 wt%. The acrylonitrile structural unit content in the hydrogenated nitrile rubber is 36-50% by weight, and the Mooney viscosity ML(1+4) at 100°C is 58-72. The first component is a mixture of bis-(γ-triethoxysilylpropyl)-polysulfide and carbon black in a mass ratio of 1:0.8-1.

2.

2. The composition according to claim 1, wherein, The thermoplastic polyurethane elastomer is a polyester-type thermoplastic polyurethane elastomer, and the melting temperature of the thermoplastic polyurethane elastomer is 110℃-130℃. And / or, the bis-(γ-triethoxysilylpropyl)-polysulfide is a bis-(γ-triethoxysilylpropyl)-disulfide and / or a bis-(γ-triethoxysilylpropyl)-tetrasulfide.

3. The composition according to claim 1 or 2, wherein, The weight ratio of styrene structural units to butadiene structural units in the star-shaped SBS is 0.25-0.43:

1. And / or, the styrene-butadiene rubber has a rubber content of 92-95 wt%, a Mooney viscosity ML(1+4) of 72-80 at 100°C, and a styrene structural unit content of 24-30% by weight. And / or, the base asphalt is 70# asphalt and / or 90# asphalt.

4. The composition according to claim 1 or 2, wherein, The additives include fillers; the filler content is 20-30 wt% based on the total weight of the composition. And / or, the average particle diameter of the filler is 60-90 μm.

5. The composition according to claim 4, wherein, The filler is selected from light calcium carbonate and / or talc.

6. A method for preparing modified asphalt coating material, characterized in that, This method is carried out using the components of the composition according to any one of claims 1-5, and the method includes: in a reactor, (1) The base asphalt and epoxidized soybean oil are mixed for the first time to obtain mixture I; (2) Mixture I is mixed with star-shaped SBS and styrene-butadiene rubber to obtain mixture II; (3) Mixture II is mixed with hydrogenated nitrile rubber and thermoplastic polyurethane elastomer in a third mixing process to obtain mixture III; (4) Mixture III with the first component in a fourth mixing process to obtain mixture IV; (5) Mix the mixture IV with the filler in a fifth mixing process to obtain the modified bitumen coating.

7. The method according to claim 6, wherein, In step (1), the conditions for the first mixing include: temperature 150-170℃ and time 15-25min; And / or, in step (2), the conditions for the second mixing include: temperature 150-170°C, stirring rate 1200-1500 r / min, and time 60-120 min; And / or, in step (3), the conditions for the third mixing include: temperature 180-190℃, stirring rate 1200-1500r / min, and time 160-200min; And / or, in step (4), the conditions for the fourth mixing include: temperature 180-190℃, stirring rate 1200-1500r / min, and time 20-40min; And / or, in step (5), the conditions for the fifth mixing include: temperature 180-190℃, stirring rate 1200-1500r / min, and time 40-60min.

8. The modified bitumen coating prepared by the method of claim 6 or 7.

9. The application of the modified bitumen coating material according to claim 8 in the preparation of energy-saving waterproof membrane.

10. An energy-saving waterproof membrane, characterized in that, The energy-saving waterproof membrane includes a base fabric, a coating material, and a release film, wherein the coating material is the modified bitumen coating material as described in claim 8; And / or, the separator is a PE film.

11. The application of the energy-saving waterproof membrane according to claim 10 in building waterproofing.

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