Aging-resistant sbs modified asphalt coating material, waterproof roll material and preparation method

Abstract

The application belongs to the technical field of building waterproof engineering, and particularly relates to an anti-aging SBS modified asphalt coating material and waterproof roll material, and further discloses a preparation method thereof. The anti-aging SBS modified asphalt coating material and the waterproof roll material adopt heavy-interchange 70# asphalt and self-made anti-aging high-grade waterproof asphalt as raw materials, and add SBS, waste rubber powder and sepiolite powder as raw materials, and each component is synergistic with each other, so that the waterproof roll material coating material can be produced without adding softening oil, the anti-aging and waterproof performance of the material can be improved, and the service life of the material can be effectively prolonged.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of building waterproof engineering, and particularly relates to a kind of anti-aging SBS modified asphalt coating material, waterproof roll material, and further discloses its preparation method. BACKGROUND

[0002] Modified asphalt waterproof roll material plays an extremely important role in building waterproof engineering, and is widely used in waterproofing of building roof, underground and other special structures, and is a kind of waterproof material with wide range and large quantity. At present, elastomer (SBS) modified asphalt waterproof roll material is still the mainstream product in the domestic market, especially when used outdoors, its superior high temperature resistance is difficult to be replaced by other materials.

[0003] The elastomer (SBS) modified asphalt on the market needs to add softening oil in the production process, and the preparation process is relatively complex. Moreover, the volatile organic compounds contained in the softening oil can cause the volatile light components during the production of polymer modified asphalt, which not only pollutes the environment and affects the anti-aging performance of the waterproof material, but also reduces the service life of the waterproof roll material, causing unnecessary economic losses. In addition, waste rubber powder is usually added in the production process of modified asphalt. Although waste rubber modified asphalt can consume a large amount of waste tires, the waste rubber will release a large amount of harmful smoke during high-temperature production, which not only harms human health, but also brings great challenges to the environment. Especially when the waterproof roll material is used outdoors for a long time, it is easy to age, resulting in a large number of cracks or cracks on the surface of the waterproof layer, affecting the waterproof function and service life of the material. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide an anti-aging SBS modified asphalt coating material, which has the advantages of high strength, environmental protection, good water resistance, good high and low temperature performance, and good anti-aging performance, and effectively prolongs the service life of the modified asphalt coating material.

[0005] The second technical problem to be solved by the present application is to provide an anti-aging SBS modified asphalt waterproof roll material.

[0006] The third technical problem to be solved by the present application is to provide a preparation method of the anti-aging SBS modified asphalt coating material and waterproof roll material.

[0007] To solve the above technical problems, the anti-aging SBS modified asphalt coating material of the present application comprises the following raw materials by weight: 70# asphalt 40-50 parts by weight, high-grade waterproof asphalt 50-60 parts by weight, SBS 8-12 parts by weight, waste rubber powder 10-20 parts by weight, and sepiolite powder 10-15 parts by weight.

[0008] The high-grade waterproof asphalt comprises the following raw materials: base asphalt, catalytic oil slurry, furfural extract oil, conversion agent, filler, adsorbent.

[0009] The mass ratio of the base asphalt, catalytic oil slurry, furfural extract oil, conversion agent, filler, and adsorbent is 70-80:6-10:10-18:0.1-0.25:1-3:0.03-0.05.

[0010] Specifically, the anti-aging SBS modified asphalt coating material comprises the following components in parts by weight:

[0011] The melting index of the SBS is 0.03-0.10 g / min; and / or,

[0012] The particle size of the waste rubber powder is 60-80 mesh; and / or,

[0013] The particle size of the sepiolite powder is 80-100 mesh.

[0014] Specifically, the anti-aging SBS modified asphalt coating material, the high-grade waterproof asphalt, the furfural extract oil comprises one or a mixture of two of reduced three-line furfural extract oil and reduced four-line furfural extract oil.

[0015] Preferably, the content of aromatic components in the furfural extract oil is ≥40%.

[0016] Specifically, the anti-aging SBS modified asphalt coating material, the high-grade waterproof asphalt, the adsorbent comprises bamboo-wood nanofiber aerogel.

[0017] Preferably, the preparation method of the bamboo-wood nanofiber aerogel comprises the steps of: immersing bamboo-wood cellulose nanofibers in water and ethanol solution successively, and pressurizing and heating the nanofibers.

[0018] Preferably, the immersing step comprises the steps of: immersing the bamboo-wood cellulose nanofibers in water for 20-30 h, and then taking out the nanofibers and immersing them in ethanol solution for 20-30 h.

[0019] Preferably, the immersing step comprises the steps of: immersing the bamboo-wood cellulose nanofibers in water for 24 h, and then taking out the nanofibers and immersing them in ethanol solution for 24 h.

[0020] Preferably, the pressurizing and heating treatment step is performed for 6-10 h, and preferably for 8 h.

[0021] Specifically, the anti-aging SBS modified asphalt coating material, the high-grade waterproof asphalt, the filler comprises activated palygorskite.

[0022] Preferably, the preparation method of the activated palygorskite comprises the steps of adding palygorskite into dilute hydrochloric acid mixture, and treating at 50-80℃; preferably, the treating temperature is 60℃;

[0023] Preferably, the mass concentration of the dilute hydrochloric acid is 1%-2%.

[0024] Preferably, the mass ratio of the palygorskite to the dilute hydrochloric acid is 1:2-4g / mL; preferably, the mass ratio is 1:3g / mL.

[0025] Preferably, the treating time is 40-80min.

[0026] Preferably, the method further comprises the steps of washing and drying the treated activated palygorskite.

[0027] Specifically, in the anti-aging SBS modified asphalt coating material, the high-grade waterproof asphalt comprises:

[0028] The base asphalt comprises heavy-interchange 70# asphalt; and / or,

[0029] The aromatic content of the catalytic cracking oil slurry is 40%-48%; and / or,

[0030] The conversion agent comprises silicotungstic acid.

[0031] The application further discloses a preparation method of the anti-aging SBS modified asphalt coating material, which comprises the step of mixing selected amounts of the 70# asphalt, the high-grade waterproof asphalt, SBS, waste rubber powder and sepiolite powder.

[0032] Preferably, the temperature of the mixing step is 170-180℃.

[0033] Preferably, the method further comprises the step of high-speed shearing at a rotating speed of 3000-3500r / min for 1-1.5h during the mixing process.

[0034] Preferably, the method further comprises the step of high-speed shearing at a rotating speed of 3200r / min for 1.2h during the mixing process.

[0035] Specifically, in the preparation method of the anti-aging SBS modified asphalt coating material, the method further comprises the step of preparing the high-grade waterproof asphalt, i.e. the step of mixing selected amounts of the base asphalt, catalytic oil slurry, furfural extract oil, conversion agent, absorbent and filler.

[0036] Preferably, the temperature of the mixing step is 120℃-130℃, and preferably, the mixing temperature is 125℃.

[0037] Specifically, the preparation method of the high-grade waterproof asphalt comprises the following steps:

[0038] (1) the selected amount of the base asphalt is heated to 120-130 DEG C;

[0039] (2) the selected amount of the catalytic oil slurry and the furfural extract oil is continuously added, and high-speed shearing is carried out at 1000-1500 r / min for 30-40 min; preferably, high-speed shearing is carried out at 1200 r / min for 35 min;

[0040] (3) the selected amount of the conversion agent and the absorbent is continuously added, and shearing is continuously carried out for 20-40 min, and then shearing is continuously carried out under ultrasonic condition for 0.5-1 h;

[0041] (4) the selected amount of the filler is continuously added, and shearing is continuously carried out for 20-40 min, and the high-grade waterproof asphalt is obtained.

[0042] Specifically, in the preparation method of the high-grade waterproof asphalt, in the step (3), the power of the ultrasonic step is 4-8 W, preferably the power is 6 W, and the ultrasonic time is 0.5-1 h.

[0043] The application further discloses a waterproof roll material, which comprises a polyester felt reinforcing body, and a modified asphalt adhesive layer and a polyethylene film are sequentially arranged on the upper and lower surfaces of the reinforcing body.

[0044] The modified asphalt adhesive layer is formed by the anti-aging SBS modified asphalt coating material.

[0045] The application further discloses a method for preparing the waterproof roll material, which comprises the steps of coating the anti-aging SBS modified asphalt coating material on the upper and lower surfaces of the polyester felt reinforcing body and sequentially arranging the polyethylene film.

[0046] The anti-aging SBS modified asphalt coating material and the waterproof roll material disclosed by the application use heavy-interchange 70# asphalt and anti-aging high-grade waterproof asphalt as raw materials, and add SBS, waste rubber powder and sepiolite powder as raw materials, and the components are synergistic with each other, which can not only improve the anti-aging and waterproof performance of the material, but also effectively prolong the service life of the material. The anti-aging SBS modified asphalt coating material and the waterproof roll material disclosed by the application can produce waterproof roll material coating material without adding softening oil, which overcomes the defects of the complicated process of the traditional preparation method; the special structure of sepiolite powder can reduce the surface temperature of the roll material under high temperature conditions, prolong the service life; and the waste rubber powder is used as raw material, which not only makes the waste resources be reasonably utilized, greatly reduces the production cost, but also improves the added value of the product.

[0047] The anti-aging high-grade waterproof asphalt provided by the application is prepared by using heavy traffic asphalt, oil slurry and furfural extract oil as basic raw materials, and by adding selected conversion agent, adsorbent and filler raw material system, so that the volatilization of light components of the asphalt can be greatly reduced when heated, and the anti-aging performance of the waterproof material can be improved through the mutual cooperation between the components.

[0048] The anti-aging high-grade waterproof asphalt provided by the application is prepared by using catalytic cracking oil slurry and furfural extract oil as raw materials, and the high-grade waterproof asphalt is prepared by using the catalytic cracking oil slurry and furfural extract oil containing more saturated components and aromatic components, which is beneficial to the swelling of SBS in the process of preparing the coiled material.

[0049] In the preparation process of the anti-aging high-grade waterproof asphalt provided by the application, silicotungstic acid is added as a conversion agent, and the presence of the silicotungstic acid makes the aromatic components be converted into macromolecular substances during the heating process, so that the volatilization of harmful substances is reduced and the environment is protected.

[0050] The anti-aging high-grade waterproof asphalt provided by the application uses palygorskite as a filler, and the palygorskite is a natural mineral micro-fiber, a large number of fibers form a reinforced network, and the reinforced network is intertwined with the spatial network of SBS, so that the volatilization of saturated components with low molecular weight in the asphalt is reduced, the anti-aging performance of the asphalt is improved, and the palygorskite has a large specific surface area and a special layer chain structure, so that the asphalt has a large specific surface contact area with the palygorskite, the high and low temperature performance of the asphalt is improved, and the palygorskite can coat the light components after acidification, so that the volatilization of the light components is reduced, the environment is protected, and the low temperature performance of the asphalt is improved.

[0051] The anti-aging high-grade waterproof asphalt provided by the application uses bamboo-wood nanofiber aerogel as an adsorbent, and the aerogel has a special fiber framework structure after reaction in the preparation process, can adsorb the organic light components volatilized in the preparation process, reduces the volatilization of the light components, protects the environment, improves the anti-aging performance of the waterproof coiled material, and improves the low temperature performance of the coiled material.

[0052] The preparation method of the anti-aging high-grade waterproof asphalt provided by the application uses ultrasonic treatment in the mixing process, improves the dispersity of the adsorbent and the conversion agent, improves the performance of the prepared high-grade waterproof asphalt, has the advantages of simple and easy manufacturing process, has excellent anti-aging performance, shortens the process flow for waterproof coiled material production enterprises, greatly improves the economic feasibility, and can be widely used in the production of elastomer / plastic body modified asphalt, self-adhesive polymer modified asphalt, pre-paved / wet-paved and modified asphalt waterproof coiled material for roads and bridges.

[0053] The anti-aging SBS modified asphalt coating material and waterproof coiled material of the present application are synergistic with each other, the SBS modified asphalt coating material prepared by the present application is simple in manufacturing process, excellent in anti-aging performance, environment-friendly, shortens the process flow for waterproof coiled material production enterprises, and is economic and feasible, and is suitable for waterproofing and anti-seepage of industrial and civil building roofs, walls, kitchen and bathroom, basement, swimming pool, and bridge, subway, reservoir and other engineering, and is also suitable for metal container and pipeline corrosion protection. DETAILED DESCRIPTION

[0054] To make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application.

[0055] In the following preparation example of the present application, the filler is activated palygorskite, and the preparation method of the activated palygorskite comprises: mixing palygorskite with 2% hydrochloric acid in a mass fraction concentration at a material-liquid ratio of 1:3, treating at 60℃ for 60min, and then washing with water and drying to obtain the activated palygorskite.

[0056] In the following preparation example of the present application, the adsorbent is bamboo-wood nanofiber aerogel, and the preparation method of the bamboo-wood nanofiber aerogel comprises: soaking bamboo-wood cellulose nanofiber in water for 24h, then taking out the bamboo-wood nanofiber and continuing to soak in an ethanol solution for 24h, and after taking out, heating the nanofiber in a pressure oven for 8h to obtain the required bamboo-wood nanofiber aerogel.

[0057] In the following preparation example, comparative preparation example, embodiment and comparative example scheme of the present application, the properties and parameters of the same raw material components selected are the same.

[0058] Preparation Example 1

[0059] 70 parts of heavy 70# asphalt is heated to 125℃, 6 parts of catalytic oil slurry and 10 parts of reduced three-line furfural extract oil are added and mixed, and high-speed shearing is carried out at a speed of 1200r / min for 35min; while maintaining the temperature at 125℃, 0.1 parts of silicotungstic acid and 0.03 parts of bamboo-wood nanofiber aerogel are added and mixed, and shearing treatment is continued for 30min, then under the condition of ultrasonic (power 6W), shearing is continued for 0.5h, 1 part of activated palygorskite is added and shearing is continued for 30min, and then the preparation is completed.

[0060] Preparation Example 2

[0061] 80 parts of heavy 70# asphalt was heated to 125℃, 10 parts of catalytic oil slurry and 18 parts of three-line furfural extract oil were mixed, and high-speed shearing was carried out at a speed of 1200r / min for 35min; continue to keep the temperature at 125℃, and add 0.25 parts of tungstic acid and 0.05 parts of bamboo-wood nanofiber aerogel mixture, continue to shear for 30min, then continue to shear under ultrasonic (power 6W) for 0.5h, continue to keep the temperature, add 3 parts of activated palygorskite and continue to shear for 30min, and then stop.

[0062] Preparation Example 3

[0063] 80 parts of heavy 70# asphalt was heated to 125℃, 10 parts of catalytic oil slurry and 18 parts of three-line furfural extract oil were mixed, and high-speed shearing was carried out at a speed of 1200r / min for 35min; continue to keep the temperature at 125℃, and add 0.25 parts of tungstic acid and 0.05 parts of bamboo-wood nanofiber aerogel mixture, continue to shear for 30min, then continue to shear under ultrasonic (power 6W) for 0.5h, continue to keep the temperature, add 3 parts of activated palygorskite and continue to shear for 30min, and then stop.

[0064] Comparative Preparation Example 1

[0065] 80 parts of heavy 70# asphalt was heated to 125℃, 10 parts of catalytic oil slurry and 18 parts of three-line furfural extract oil were mixed, and high-speed shearing was carried out at a speed of 1200r / min for 35min; continue to keep the temperature at 125℃, and add 0.25 parts of tungstic acid and 0.05 parts of bamboo-wood nanofiber aerogel mixture, continue to shear for 30min, then continue to shear under ultrasonic (power 6W) for 0.5h, continue to keep the temperature, add 3 parts of activated palygorskite and continue to shear for 30min, and then stop.

[0066] Comparative Preparation Example 2

[0067] 80 parts of heavy 70# asphalt was heated to 125℃, 10 parts of catalytic oil slurry and 18 parts of three-line furfural extract oil were mixed, and high-speed shearing was carried out at a speed of 1200r / min for 35min; continue to keep the temperature at 125℃, and add 0.25 parts of tungstic acid and 0.05 parts of bamboo-wood nanofiber aerogel mixture, continue to shear for 30min, then continue to shear under ultrasonic (power 6W) for 0.5h, continue to keep the temperature, add 3 parts of activated palygorskite and continue to shear for 30min, and then stop.

[0068] Comparative Preparation Example 3

[0069] 80 parts of heavy traffic 70# asphalt was heated to 125℃, 10 parts of catalytic oil slurry and 18 parts of reduced three-line furfural extract oil were mixed, and sheared at a speed of 1200 r / min for 35 min; the temperature was kept at 125℃, 0.05 parts of bamboo-wood nanofiber aerogel was added and sheared for 30 min, then sheared for 0.5 h under the condition of ultrasonic (6W), finally 3 parts of activated palygorskite was added and sheared for 30 min at the temperature.

[0070] Comparative Preparation Example 4

[0071] 80 parts of heavy traffic 70# asphalt was heated to 125℃, 10 parts of catalytic oil slurry and 18 parts of reduced three-line furfural extract oil were mixed, and sheared at a speed of 1200 r / min for 35 min, then sheared for 0.5 h under the condition of ultrasonic (6W), and obtained.

[0072] Comparative Preparation Example 5

[0073] 80 parts of heavy traffic 70# asphalt was heated to 125℃, 10 parts of catalytic oil slurry and 18 parts of reduced three-line furfural extract oil were mixed, and sheared at a speed of 1200 r / min for 35 min; the temperature was kept at 125℃, 0.25 parts of silicotungstic acid and 0.05 parts of bamboo-wood nanofiber aerogel were added and sheared for 30 min, finally 3 parts of activated palygorskite was added and sheared for 30 min at the temperature.

[0074] Comparative Preparation Example 6

[0075] 80 parts of heavy traffic 70# asphalt was heated to 125℃, 10 parts of catalytic oil slurry and 18 parts of reduced three-line furfural extract oil were mixed, and sheared at a speed of 1200 r / min for 35 min; the temperature was kept at 125℃, 0.25 parts of phosphomolybdic acid and 0.05 parts of bamboo-wood nanofiber aerogel were added and sheared for 30 min, then sheared for 0.5 h under the condition of ultrasonic (6W), finally 3 parts of activated palygorskite was added and sheared for 30 min at the temperature.

[0076] The properties of high-grade waterproof asphalt prepared in Preparation Examples 1-3 were determined respectively, and the results are shown in Table 1 below.

[0077] Table 1 Properties of high-grade waterproof asphalt in Preparation Examples 1-3

[0078]

[0079] The properties of high-grade waterproof asphalt prepared in Comparative Preparation Examples 1-6 were determined respectively, and the results are shown in Table 2 below.

[0080] Table 2 Properties of high-grade waterproof asphalt in Comparative Preparation Examples 1-6

[0081]

[0082] From the data in the above Table 1 and Table 2, it can be seen that the high-grade waterproof asphalt material prepared by using the raw material system of the present application has good application performance, and the softening point increment of the prepared high-grade waterproof asphalt before and after aging is small, and the evaporation loss is small, indicating that the high-grade waterproof asphalt prepared by using the present application has good anti-aging performance.

[0083] In the following examples of the present application, the anti-aging high-grade waterproof asphalt prepared in the aforementioned Preparation Example 3 is used as a raw material to prepare the required asphalt coating material.

[0084] Example 1

[0085] First, 40 parts of 70# asphalt and 50 parts of high-grade waterproof asphalt (Preparation Example 3) are mixed and heated to 175°C, then 8 parts of SBS is continuously added, and high-speed shearing is carried out at a speed of 3200 r / min for 1.2 h, then 10 parts of waste rubber powder and 10 parts of sepiolite powder are mixed and continuously sheared at the same temperature and speed for 1 h, to obtain the modified asphalt coating material.

[0086] The polyester felt is used as a reinforcing body, the modified asphalt glue is coated on the upper and lower surfaces of the reinforcing body, and the polyethylene film is coated on the upper and lower surfaces of the modified asphalt layer, to obtain the waterproof roll material.

[0087] Example 2

[0088] First, 45 parts of 70# asphalt and 55 parts of high-grade waterproof asphalt are mixed and heated to 175°C, then 10 parts of SBS is continuously added, and high-speed shearing is carried out at a speed of 3200 r / min for 1.2 h, then 15 parts of waste rubber powder and 12 parts of sepiolite powder are mixed and continuously sheared at the same temperature and speed for 1 h, to obtain the modified asphalt coating material.

[0089] The polyester felt is used as a reinforcing body, the modified asphalt glue is coated on the upper and lower surfaces of the reinforcing body, and the polyethylene film is coated on the upper and lower surfaces of the modified asphalt layer, to obtain the waterproof roll material.

[0090] Example 3

[0091] First, 50 parts of 70# asphalt and 60 parts of high-grade waterproof asphalt are mixed and heated to 175°C, then 12 parts of SBS is continuously added, and high-speed shearing is carried out at a speed of 3200 r / min for 1.2 h, then 20 parts of waste rubber powder and 15 parts of sepiolite powder are continuously sheared at the same temperature and speed for 1 h, to obtain the modified asphalt coating material.

[0092] The polyester felt is used as a reinforcing body, the modified asphalt glue is coated on the upper and lower surfaces of the reinforcing body, and the polyethylene film is coated on the upper and lower surfaces of the modified asphalt layer, to obtain the waterproof roll material.

[0093] Comparative Example 1

[0094] First, 50 parts of 70# asphalt and 60 parts of commercially available high-grade waterproof asphalt are mixed and heated to 175°C, 12 parts of SBS is added, and high-speed shearing is carried out at a rotation speed of 3200 r / min for 1.2 h. Then, 20 parts of waste rubber powder and 15 parts of sepiolite powder are mixed, and shearing is continued at the same temperature and rotation speed for 1 h to obtain the modified asphalt coating material.

[0095] The polyester felt is used as the reinforcing body, the modified asphalt coating material is coated on the upper and lower surfaces of the reinforcing body, and polyethylene film is coated on the upper and lower surfaces of the modified asphalt layer to obtain the waterproof roll material.

[0096] Comparative Example 2

[0097] First, 50 parts of 70# asphalt and 60 parts of high-grade waterproof asphalt (Preparation Example 3) are mixed and heated to 175°C, 12 parts of SBS is added, and high-speed shearing is carried out at a rotation speed of 3200 r / min for 1.2 h. Then, 20 parts of waste rubber powder and 15 parts of talc powder are mixed, and shearing is continued at the same temperature and rotation speed for 1 h to obtain the modified asphalt coating material.

[0098] The polyester felt is used as the reinforcing body, the modified asphalt coating material is coated on the upper and lower surfaces of the reinforcing body, and polyethylene film is coated on the upper and lower surfaces of the modified asphalt layer to obtain the waterproof roll material.

[0099] Comparative Example 3

[0100] First, 50 parts of 70# asphalt and 60 parts of commercially available high-grade waterproof asphalt are mixed and heated to 175°C, 12 parts of SBS is added, and high-speed shearing is carried out at a rotation speed of 3200 r / min for 1.2 h. Then, 20 parts of waste rubber powder and 15 parts of talc powder are mixed, and shearing is continued at the same temperature and rotation speed for 1 h to obtain the modified asphalt coating material.

[0101] The polyester felt is used as the reinforcing body, the modified asphalt coating material is coated on the upper and lower surfaces of the reinforcing body, and polyethylene film is coated on the upper and lower surfaces of the modified asphalt layer to obtain the waterproof roll material.

[0102] The properties of the waterproof roll materials prepared in Examples 1-3 and Comparative Examples 1-3 are measured.

[0103] Table 3 is a six-level classification table of Japanese odor intensity, and the properties of the waterproof roll materials prepared from the asphalt coating materials of Examples 1-3 and Comparative Examples 1-3 are evaluated according to the Japanese odor intensity six-level classification method, and the evaluation results are shown in Table 4.

[0104] Table 3 Japanese odor intensity levels

[0105] intensity indicator 0 odourless 1 slight odour 2 weak but identifiable odour 3 easily perceived odour 4 strong odour 5 intense odour

[0106] Table 4 Properties of the waterproof roll materials in Examples 1-3 and Comparative Examples 1-3

[0107]

[0108] From the data in Table 4, it can be seen that the waterproofing membrane prepared by using the raw material system of the application not only has good waterproof performance, excellent low-temperature flexibility and heat resistance, but also has obvious environmental protection advantages. The surface temperature of the membrane prepared by using the formula is lower than that of the conventional membrane after 1h of direct sunlight at an ambient temperature of 25℃, indicating that the membrane can reduce the surface temperature of the membrane, reduce aging and effectively improve the aging resistance under high temperature conditions.

[0109] In summary, the waterproofing membrane described in the application can be applied to the waterproofing and seepage prevention of industrial and civil building roofs, walls, kitchen and bathroom, basement, swimming pool, and bridge, subway, reservoir and other engineering projects, and is also suitable for the corrosion protection of metal containers and pipelines.

[0110] The above has described the embodiments of the application in detail, and the principles and implementation modes of the application have been described by applying specific examples; the above embodiment descriptions are only used to help understand the method of the application and its core idea; meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation modes and application ranges will have changes; in summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. An age-resistant SBS modified bituminous coating characterized in that, The coating material comprises the following raw materials by weight: 70# asphalt 40-50 parts by weight, high-grade waterproof asphalt 50-60 parts by weight, SBS 8-12 parts by weight, waste rubber powder 10-20 parts by weight, and sepiolite powder 10-15 parts by weight; The high-grade waterproof asphalt comprises the following raw materials: base asphalt, catalytic oil slurry, furfural extract oil, conversion agent, filler, and adsorbent; wherein, The mass ratio of the base asphalt, catalytic oil slurry, furfural extract oil, conversion agent, filler, and adsorbent is 70-80:6-10:10-18:0.1-0.25:1-3:0.03-0.05; The adsorbent in the high-grade waterproof asphalt comprises bamboo-wood nanofiber aerogel; The preparation method of the bamboo-wood nanofiber aerogel comprises the steps of immersing bamboo-wood cellulose nanofibers in water and ethanol solution, respectively, and pressurized and heated treatment of the bamboo-wood nanofibers; The conversion agent comprises silicotungstic acid.

2. The anti-aging SBS modified asphalt coating material according to claim 1, wherein: The melt index of the SBS is 0.03-0.10 g / min; The particle size of the waste rubber powder is 60-80 mesh; The particle size of the sepiolite powder is 80-100 mesh.

3. The weatherable SBS modified bituminous coating of claim 1 or 2, wherein, The furfural extract oil in the high-grade waterproof asphalt comprises one or a mixture of two of reduced three-line furfural extract oil and reduced four-line furfural extract oil; The aromatic content of the furfural extract oil is ≥40%.

4. The anti-aging SBS modified asphalt coating material according to any one of claims 1-2, wherein: The immersing step comprises the steps of immersing the bamboo-wood cellulose nanofibers in water for 20-30 h, and then immersing the bamboo-wood nanofibers in ethanol solution for another 20-30 h; The pressurized and heated treatment step lasts for 6-10 h.

5. The weatherable SBS modified bituminous coating stock of any one of claims 1-2, wherein, The filler in the high-grade waterproof asphalt comprises activated palygorskite; The preparation method of the activated palygorskite comprises the steps of mixing palygorskite with dilute hydrochloric acid, and treating at 50-80℃; The mass concentration of the dilute hydrochloric acid is 1%-2%; The mass ratio of the palygorskite to the dilute hydrochloric acid is 1:2-4 g / mL; The treatment time is 40-80 min; The method further comprises the steps of washing and drying the treated activated palygorskite.

6. The weatherable SBS modified bituminous coating of any one of claims 1-2, wherein, In the high-grade waterproof asphalt: The base asphalt comprises heavy-interchange 70# asphalt; The aromatic content of the catalytic oil slurry is 40%-48%.

7. A process for preparing the weatherable SBS modified bituminous coating material according to any one of claims 1 to 2, characterized in that, The method comprises the step of mixing selected amounts of the 70# asphalt, high-grade waterproof asphalt, SBS, waste rubber powder, and sepiolite powder; The temperature of the mixing step is 170-180℃; The method further comprises the step of high-speed shearing at a rotation speed of 3000-3500 r / min for 1-1.5 h during the mixing process.

8. The method for preparing the aging-resistant SBS modified asphalt coating according to claim 7, characterized in that, The method further comprises the step of preparing the high-grade waterproof asphalt, i.e., the step of mixing selected amounts of the base asphalt, catalytic oil slurry, furfural extract oil, conversion agent, adsorbent, and filler. The temperature of the mixing step is 120-130°C.

9. An aged resistant waterproofing membrane characterized by, The polyester felt reinforcing body is coated with the modified asphalt coating on both upper and lower surfaces, and the polyethylene film is sequentially arranged on the coating. The modified asphalt coating is formed by the anti-aging SBS modified asphalt coating material according to any one of claims 1-6.

10. A method of preparing the aged-resistant waterproofing membrane according to claim 9, characterized in that, The polyester felt reinforcing body is coated with the anti-aging SBS modified asphalt coating material on both upper and lower surfaces, and the polyethylene film is sequentially arranged on the coating.

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