Composition for modified asphalt coating material, modified asphalt coating material, preparation method and application of modified asphalt coating material, energy-saving waterproof coiled material and application of energy-saving waterproof coiled material

Abstract

The invention relates to the field of building waterproof materials, and discloses a composition for a modified asphalt coating material, the modified asphalt coating material, a preparation method and application of the modified asphalt coating material, an energy-saving waterproof coiled material and application of the energy-saving waterproof coiled material. The composition contains a main agent and an auxiliary agent, wherein the main agent comprises matrix asphalt, epoxidized soybean oil, star-shaped SBS, a thermoplastic polyurethane elastomer, butadiene styrene rubber, hydrogenated butadiene-acrylonitrile rubber and a first component; on the basis of the total weight of the composition, the content of the matrix asphalt 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 butadiene-acrylonitrile rubber is 5-10 wt%, and the content of the plasticizer is 1-5 wt%. And the content of the first component is 1-2wt%. The modified asphalt waterproof coiled material provided by the invention has the advantages of strong adhesion, good stretchability and weather resistance and the like.

Description

Technical Field

[0001] The present invention relates to the field of building waterproof materials, and particularly to a composition for modified asphalt coating material, a modified asphalt coating material, a preparation method and application thereof, an energy-saving waterproof coiled material and an application thereof. Background Art

[0002] Modified asphalt waterproof coiled materials are widely used in waterproof projects such as the roofs, basements, and bathrooms of industrial and civil buildings, as well as the waterproof and moisture-proof of roof gardens, roads, bridges, tunnels, parking lots, swimming pools, etc. As a leak-free connection between the engineering foundation and the building, it is the waterproof barrier of the entire project.

[0003] Modified asphalt refers to an asphalt binder made by adding modifiers such as rubber, polymer, or other fillers, or by taking measures such as mild oxidation processing of asphalt to improve the performance of asphalt or asphalt mixture. In existing hot-melt waterproof coiled materials, the modified asphalt coating material mainly uses styrene-butadiene block copolymer and recycled tire rubber powder as raw materials and oil as a modifier. In this formulation system during construction, if the amount of tire rubber powder added is small, the heat resistance of the coiled material is insufficient; if the amount of tire rubber powder added is large, less oil comes out during construction, and it is not easy to achieve a full-bond waterproof effect between the coiled material and the base surface.

[0004] In order to further improve the adhesion and aging resistance and other properties of existing waterproof coiled materials, the research on modified asphalt has attracted much attention from R & D personnel.

[0005] CN113528018A discloses a modified asphalt coating material, a preparation method and a coiled material thereof. The asphalt coating material includes the following components in parts by weight: 40 - 50 parts by weight of matrix asphalt, 1 - 10 parts by weight of oil, a total of 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. Among them, 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 powder, heavy calcium carbonate, montmorillonite, and kaolin. This modified asphalt coating material has excellent anti-aging and durability properties, but the internal cohesion of this product is relatively large, the oil output effect during fire baking construction is average, it requires long-time baking and heating, resulting in energy waste, and it is not easy to achieve a full-bond effect after construction.

[0006] Therefore, it is of great significance to develop a new type of modified asphalt coating material to make the prepared modified asphalt waterproof coiled material have strong adhesion, good tensile property and weather resistance, and be energy-saving and environment-friendly. Summary of the Invention

[0007] The purpose of the present invention is to solve the problems of low adhesion and poor weather resistance of existing waterproof coiled materials.

[0008] To achieve the above object, on the one hand, the present invention provides a composition for modified asphalt coating material, which composition contains a main agent and an auxiliary agent. The main agent includes matrix asphalt, epoxy soybean oil, star-shaped SBS, thermoplastic polyurethane elastomer, styrene-butadiene rubber, hydrogenated nitrile rubber and a first component;

[0009] Based on the total weight of the composition, the content of the matrix 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%;

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

[0011] On the second aspect, the present invention provides a method for preparing a modified asphalt coating material, which method is carried out by using the components in the composition described in the first aspect above. The method includes: in a reactor,

[0012] (1) First mix the matrix asphalt and the epoxy soybean oil to obtain mixture I;

[0013] (2) Second mix the mixture I with star-shaped SBS and styrene-butadiene rubber to obtain mixture II;

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

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

[0016] (5) Fifth mix the mixture IV with a filler to obtain the modified asphalt coating material.

[0017] On the third aspect, the present invention provides a modified asphalt coating material prepared by the method described in the second aspect above.

[0018] On the fourth aspect, the present invention provides the application of the modified asphalt coating material described in the third aspect above in the preparation of energy-saving waterproof coiled materials.

[0019] The fifth aspect of the present invention provides an energy-saving waterproof coiled material, which includes a base fabric, a coating material, and a release film. The coating material is the modified asphalt coating material described in the aforementioned third aspect.

[0020] The sixth aspect of the present invention provides the application of the energy-saving waterproof coiled material described in the fifth aspect in building waterproofing.

[0021] Through the above technical solutions, the present invention has at least the following advantages:

[0022] (1) The energy-saving waterproof coiled material provided by the present invention has excellent adhesion performance and weather resistance, and at the same time has good tensile strength and tear resistance, greatly reducing the deformation risk.

[0023] (2) In terms of construction, the energy-saving waterproof coiled material provided by the present invention can form a good full-adhesion effect with the base surface, effectively improving the construction efficiency; and when it is constructed by fire roasting, the oil comes out quickly, avoiding long-term heating, and effectively reducing the emission of greenhouse gases, so it has the characteristics of energy conservation and environmental protection. Detailed implementation mode

[0024] In the ranges disclosed herein, the endpoints and any values are not limited to the exact ranges or values. These ranges or values should be understood to include values close to these ranges or values. For numerical ranges, between the endpoint values of each range, between the endpoint values of each range and individual point values, and between individual point values, they can be combined with each other to obtain one or more new numerical ranges, and these numerical ranges should be regarded as specifically disclosed herein.

[0025] As described above, the first aspect of the present invention provides a composition for a modified asphalt coating material. This composition contains a main agent and an auxiliary agent. The main agent includes matrix asphalt, epoxy soybean oil, star-shaped SBS, thermoplastic polyurethane elastomer, styrene-butadiene rubber, hydrogenated nitrile rubber, and a first component;

[0026] Based on the total weight of the composition, the content of the matrix asphalt is 40-55 wt%, 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 styrene-butadiene rubber is 1-5 wt%, the content of the hydrogenated nitrile rubber is 5-10 wt%, and the content of the first component is 1-2 wt%;

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

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

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

[0030] Preferably, the thermoplastic polyurethane elastomer is a polyester-based thermoplastic polyurethane elastomer, and the melting temperature of the thermoplastic polyurethane elastomer is 110 °C - 130 °C. The inventors of the present invention have found that in this preferred case, the energy-saving waterproof coiled material provided by the present invention is more likely to achieve a full adhesion effect 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-shaped SBS in the present invention is a styrene-butadiene-styrene block copolymer having a star-shaped structure.

[0033] Preferably, the weight ratio of the content of the styrene structural unit to the butadiene structural unit in the star-shaped SBS is 0.25-0.43:1.

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

[0035] Even more preferably, the base asphalt is 70# asphalt and / or 90# asphalt, and the softening point of the 70# asphalt and 90# asphalt is 45-60 °C.

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

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

[0038] Further preferably, the filler is selected from light calcium carbonate and / or talcum powder.

[0039] As described above, the second aspect of the present invention provides a method for preparing a modified asphalt coating material, which is carried out using the components in the composition described in the first aspect above. The method includes: in a reactor,

[0040] (1) First mix the base asphalt and epoxy soybean oil to obtain mixture I;

[0041] (2) Second mix the mixture I with star-shaped SBS and styrene-butadiene rubber to obtain mixture II;

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

[0043] (4) Fourth mix the mixture III with the first component to obtain mixture IV;

[0044] (5) Fifth mix the mixture IV with the filler to obtain the modified asphalt coating material.

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

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

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

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

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

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

[0051] As described above, the third aspect of the present invention provides a modified asphalt coating material prepared by the method described in the foregoing second aspect.

[0052] As described above, the fourth aspect of the present invention provides the use of the modified asphalt coating material described in the foregoing third aspect in the preparation of energy-saving waterproof coiled materials.

[0053] As described above, the fifth aspect of the present invention provides an energy-saving waterproof coiled material, which includes a base fabric, a coating material, and an isolation film, and the coating material is the modified asphalt coating material described in the foregoing third aspect.

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

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

[0056] According to a preferred specific embodiment, the preparation method of the energy-saving waterproof coiled material includes the following steps:

[0057] (S1) Transport the dried polyester filament base fabric to a pre-impregnation tank through rollers for impregnation to obtain Intermediate I, and the pre-impregnation tank contains a mixture of 70# asphalt, 10# asphalt, and PP wax with a weight ratio of 4-5:4-5:1;

[0058] (S2) Continuously transport the above Intermediate I to the discharge port. There are upper and lower rollers with a spacing of 3.5-4.5 mm in front of the discharge port. Compress the modified asphalt coating material of the present invention with Intermediate I to obtain Intermediate II;

[0059] (S3) After the Intermediate II is cooled in a water tank, cover the upper and lower surfaces of the above Intermediate II with a PE film, and after compaction, cooling, edge trimming, and winding, the energy-saving waterproof coiled material is obtained, and the water tank cooling temperature is 30-40 °C.

[0060] As described above, the sixth aspect of the present invention provides the use of the energy-saving waterproof coiled material described in the foregoing fifth aspect in building waterproofing.

[0061] The present invention will be described in detail below through examples. In the following examples, without special instructions, various instruments and raw materials used are commercially available products.

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

[0063] Matrix asphalt:

[0064] Matrix asphalt-I: 70# asphalt, softening point 46°C, purchased from Sinopec Maoming Petrochemical Company;

[0065] Matrix asphalt-II: 90# asphalt, softening point 44°C, purchased from Sinopec Maoming Petrochemical Company;

[0066] Epoxidized soybean oil: grade 8013-07-8, purchased from Nantong Runfeng Petrochemical Co., Ltd.;

[0067] Star-shaped SBS:

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

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

[0070] Thermoplastic polyurethane elastomer:

[0071] Thermoplastic polyurethane elastomer-I: polyester type, melting temperature 110°C, grade Lubrizol 58213 from the United States, purchased from Suzhou Yishifeng Plastic Co., Ltd.;

[0072] Thermoplastic polyurethane elastomer-II: polyether type, melting temperature 140°C, grade Lubrizol D91T80 from the United States, purchased from Suzhou Yishifeng Plastic Co., Ltd.;

[0073] Styrene-butadiene rubber:

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

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

[0076] The first component:

[0077] The first component-I: mixture with mass ratio of bis-(γ-triethoxysilylpropyl)-tetrasulfide to carbon black of 1:1, grade silane coupling agent RSi-B, purchased from Nanjing Shuguang Chemical Group Co., Ltd.;

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

[0079] Hydrogenated nitrile - butadiene rubber:

[0080] Hydrogenated nitrile - butadiene rubber - I: The content of acrylonitrile structural unit is 44% by weight, and the Mooney viscosity ML(1 + 4) at 100°C is 65, grade HNBR1000L, purchased from Zeon Corporation, Japan;

[0081] Hydrogenated nitrile - butadiene rubber - II: The content of acrylonitrile structural unit is 25% by weight, and the Mooney viscosity ML(1 + 4) at 100°C is 70, grade HNBR3310, purchased from Zeon Corporation, Japan;

[0082] Nitrile - butadiene rubber: Model LR815, purchased from Chitu Horse New Materials Technology Co., Ltd.

[0083] Filler:

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

[0085] Talc powder: The average particle diameter is 90μm, purchased from Lingshou County Yongshun Mineral Products 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 invention. The specific components are referred to those listed in Table 1 and include the following steps:

[0089] a1: At 160°C, mix the matrix asphalt and epoxy soybean oil for 20 min to obtain Mixture I;

[0090] a2: At 160°C, start stirring, control the rotation speed at 1400 r / min, mix Mixture I with star - shaped SBS for 50 min, and then add styrene - butadiene rubber and mix and stir for 40 min to obtain Mixture II;

[0091] a3: Adjust the temperature to 185°C, keep the rotation speed at 1400 r / min, and mix and stir Mixture II with hydrogenated nitrile - butadiene rubber and thermoplastic polyurethane elastomer for 180 min to obtain Mixture III;

[0092] a4: Keep the temperature at 185°C and the rotation speed at 1400 r / min, mix and stir Mixture III with the first component for 30 min to obtain Mixture IV;

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

[0094] Preparation Example 2

[0095] Carry out in a method similar to Preparation Example 1, with the types or amounts of each component being different, and the rest being the same as in Preparation Example 1. See the details listed in Table 1 for specific information.

[0096] Table 1

[0097]

[0098]

[0099] Preparation Example 3

[0100] Carry out in a method similar to Preparation Example 1. The difference is that the first component - II with the same weight is used to replace the first component - I in Preparation Example 1, and the rest is the same as in Preparation Example 1, to obtain the modified asphalt coating material A3.

[0101] Preparation Example 4

[0102] Carry out in a method similar to Preparation Example 1. The difference is that the thermoplastic polyurethane elastomer - II with the same weight is used to replace the thermoplastic polyurethane elastomer - I in Preparation Example 1, and the rest is the same as in Preparation Example 1, to obtain the modified asphalt coating material A4.

[0103] Preparation Example 5

[0104] Carry out in a method similar to Preparation Example 1. The difference is that the styrene - butadiene rubber - II with the same weight is used to replace the styrene - butadiene rubber - I in Preparation Example 1, and the rest is the same as in Preparation Example 1, to obtain the modified asphalt coating material A5.

[0105] Preparation Example 6

[0106] Carry out in a method similar to Preparation Example 1. The difference is that the star - shaped SBS - II with the same weight is used to replace the star - shaped SBS - I in Preparation Example 1, and the rest is the same as in Preparation Example 1, to obtain the modified asphalt coating material A6.

[0107] Preparation Example 7

[0108] Carry out in a method similar to Preparation Example 1. The difference is that the hydrogenated nitrile - butadiene rubber - II with the same weight is used to replace the hydrogenated nitrile - butadiene rubber - I in Preparation Example 1, and the rest is the same as in Preparation Example 1, to obtain the modified asphalt coating material A7.

[0109] Comparative Preparation Example 1

[0110] It was carried out in a similar manner to Preparation Example 1, except that an equal weight of nitrile rubber was used to replace the hydrogenated nitrile rubber-I in Preparation Example 1, and the rest was the same as in Preparation Example 1, to obtain the modified asphalt coating material D-A1.

[0111] Comparative Preparation Example 2

[0112] It was carried out in a similar manner to Preparation Example 1, except that the amount of star-shaped SBS-I was changed to 10 g, and at the same time the amount of filler was adjusted to 280 g, and the rest was the same as in Preparation Example 1, to obtain the modified asphalt coating material D-A2.

[0113] Comparative Preparation Example 3

[0114] It was carried out in a similar manner to Preparation Example 1, except that the amount of hydrogenated nitrile rubber-I was changed to 40 g, and at the same time the amount of filler was adjusted to 290 g, and the rest was the same as in Preparation Example 1, to obtain the modified asphalt coating material D-A3.

[0115] Comparative Preparation Example 4

[0116] It was carried out in a similar manner to Preparation Example 1, except that the amount of thermoplastic polyurethane elastomer-I was changed to 5 g, and at the same time the amount of filler was adjusted to 295 g, and the rest was the same as in Preparation Example 1, to obtain the modified asphalt coating material D-A4.

[0117] Example 1

[0118] This example is used to illustrate the energy-saving waterproof coiled material provided by the present invention, and the preparation method is as follows:

[0119] S1. The dried polyester filament base fabric was transported to the pre-impregnation tank by rollers and impregnated for 10 seconds, and the excess pre-impregnated material was squeezed out using an extrusion roller to obtain Intermediate I. The pre-impregnation tank contained a mixture of 70# asphalt, 10# asphalt, and PP wax with 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 material A1 provided above in the present invention. There were two upper and lower rollers with a spacing of 4 mm in front of the discharge port. The modified asphalt coating material A1 and Intermediate I were compressed to obtain Intermediate II;

[0121] S3. After the Intermediate II was cooled in the water tank, a PE film was covered on the upper and lower surfaces of the above Intermediate II. After compaction, cooling, edge trimming, and winding, the energy-saving waterproof coiled material was obtained. The cooling temperature of the water tank was 35°C.

[0122] Examples 2-7

[0123] It was carried out under similar process conditions to Example 1, except that:

[0124] In Example 2, the modified asphalt coating material A2 was used to replace the modified asphalt coating material A1 in Example 1;

[0125] In Example 3, the modified asphalt coating material A3 was used to replace the modified asphalt coating material A1 in Example 1;

[0126] In Example 4, the modified asphalt coating material A4 was used to replace the modified asphalt coating material A1 in Example 1;

[0127] In Example 5, the modified asphalt coating material A5 was used to replace the modified asphalt coating material A1 in Example 1;

[0128] In Example 6, the modified asphalt coating material A6 was used to replace the modified asphalt coating material A1 in Example 1;

[0129] In Example 7, the modified asphalt coating material A7 was used to replace the modified asphalt coating material A1 in Example 1.

[0130] Comparative Examples 1-4

[0131] It was carried out under similar process conditions to Example 1, and the differences were as follows:

[0132] In Comparative Example 1, the modified asphalt coating material D-A1 was used to replace the modified asphalt coating material A1 in Example 1;

[0133] In Comparative Example 2, the modified asphalt coating material D-A2 was used to replace the modified asphalt coating material A1 in Example 1.

[0134] In Comparative Example 3, the modified asphalt coating material D-A3 was used to replace the modified asphalt coating material A1 in Example 1.

[0135] In Comparative Example 4, the modified asphalt coating material D-A4 was used to replace the modified asphalt coating material A1 in Example 1.

[0136] Test Example

[0137] The energy-saving waterproof coiled materials prepared in the examples and comparative examples were subjected to performance tests in accordance with the national standard GB18242-2008, including the joint peeling strength, maximum tensile force, nail bar tearing strength, maximum tensile force retention rate after heat aging and low temperature resistance of the waterproof coiled materials;

[0138] Among them, for the heat aging treatment: the energy-saving waterproof coiled material was heat-treated at 80 °C for 10 days;

[0139] For the light aging treatment: the xenon arc lamp method was adopted, and the cumulative light exposure time of the energy-saving waterproof coiled material was 30 days;

[0140] Test for oiling effect: Cut a sample of the above energy-saving waterproof coiled material with a size of 10 cm × 10 cm, place it 2 cm away from the flame, after baking with fire for 10 seconds, immediately bond it to the wooden board, and observe the bonding degree between the energy-saving waterproof coiled material and the wooden board.

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

[0142] Table 2

[0143]

[0144]

[0145] It can be seen from the results in Table 2 that the energy-saving waterproof coiled material prepared by the present invention has more excellent bonding performance, tensile performance and tear resistance, and has good weather resistance. It can quickly produce oil when baked with fire during construction, and can effectively achieve the full bonding effect with the base surface.

[0146] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, including any other suitable combination of each technical feature. These simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. A modified asphalt coating composition, characterized in that: The composition contains a main agent and an auxiliary agent, wherein the main agent includes base asphalt, epoxy soybean oil, star-shaped SBS, thermoplastic polyurethane elastomer, styrene-butadiene rubber, hydrogenated nitrile-butadiene rubber and a first component; Based on the total weight of the composition, the content of the base asphalt is 40-55wt%, the content of the epoxidized 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%; The first component contains bis-(γ-triethoxysilylpropyl)-polysulfide, and the content of the bis-(γ-triethoxysilylpropyl)-polysulfide is 40-100 wt % based on the total weight of the first component.

2. The composition according to claim 1, wherein The content of acrylonitrile structural units in the hydrogenated nitrile rubber is 36-50% by weight, and the Mooney viscosity ML (1+4) at 100° C. is 58-72; And / or, the thermoplastic polyurethane elastomer is a polyester thermoplastic polyurethane elastomer, and the melting temperature of the thermoplastic polyurethane elastomer is 110° C.-130° C.; And / or, the first component is a mixture of bis-(γ-triethoxysilylpropyl)-polysulfide and carbon black in 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.

3. The composition according to claim 1 or 2, wherein The weight ratio of the styrene structural unit to the butadiene structural unit in the star-shaped SBS is 0.25-0.43:1; And / or, the rubber content of the styrene-butadiene rubber is 92-95wt%, the Mooney viscosity ML (1+4) at 100°C is 72-80, and the content of styrene structural units in the styrene-butadiene rubber is 24-30wt%; And / or, the matrix asphalt is 70# asphalt and / or 90# asphalt.

4. The composition according to claim 1 or 2, wherein The auxiliary agent includes a filler; based on the total weight of the composition, the content of the filler is 20-30wt%; And / or, the average particle diameter of the filler is 60-90 μm; Preferably, the filler is selected from light calcium carbonate and / or talc.

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

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

7. The modified asphalt coating material prepared by the method according to claim 5 or 6.

8. Use of the modified asphalt coating material according to claim 7 in the preparation of energy-saving waterproof membrane.

9. An energy-saving waterproof coiled material, characterized in that: The energy-saving waterproof coiled material comprises a base fabric, a coating material and an isolation film, and the coating material is the modified asphalt coating material according to claim 7; And / or, the isolation film is a PE film.

10. Use of the energy-saving waterproof membrane according to claim 9 in building waterproofing.

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