SBS modified asphalt water emulsion type waterproof coating

Abstract

The application relates to a SBS modified asphalt water emulsion type waterproof coating, which comprises the following components in parts by mass: SBS modified asphalt 80-100 parts, emulsion 60-80 parts, rubber latex 40-60 parts, epoxy resin composite base material 30-40 parts, composite hydrophobic component 18-22 parts, defoaming agent 8-10 parts, curing agent 30-40 parts and water 80-100 parts; the composite hydrophobic base material comprises attapulgite composite particles, perfluorodecyl triethoxysilane and tetraethyl orthosilicate. The application has the effect of improving the waterproof performance of the waterproof coating.

Description

Technical Field

[0001] This application relates to the field of bitumen waterproof coatings, and more particularly to an SBS modified bitumen water-emulsion waterproof coating. Background Technology

[0002] Leakage in building structures has long been a problem plaguing the construction industry, and waterproofing technology and materials have always been important research topics for researchers.

[0003] As an important global chemical material, petroleum asphalt is widely used in waterproofing, corrosion prevention, and chemical raw materials. Researching and selecting suitable types of asphalt is the primary task in manufacturing and production in various fields.

[0004] However, with industrial development and economic growth, current asphalt emulsion-based waterproof coatings are increasingly unable to meet production demands and therefore need improvement. Summary of the Invention

[0005] To further improve the waterproof performance of waterproof coatings, this application provides an SBS modified bitumen water-emulsion type waterproof coating.

[0006] The SBS modified bitumen water-emulsion waterproof coating provided in this application adopts the following technical solution:

[0007] An SBS-modified bitumen water-emulsion waterproof coating comprises the following components in parts by weight:

[0008] 80-100 parts of SBS modified bitumen, 60-80 parts of emulsion, 40-60 parts of rubber latex, 30-40 parts of epoxy resin composite substrate, 18-22 parts of composite hydrophobic component, 8-10 parts of defoamer, 30-40 parts of curing agent, and 80-100 parts of water.

[0009] The composite hydrophobic substrate comprises attapulgite composite particles, perfluorodecyltriethoxysilane, and tetraethyl orthosilicate.

[0010] By adopting the above technical solution, the composite hydrophobic substrate is prepared by attapulgite composite particles, perfluorodecyltriethoxysilane, and tetraethyl orthosilicate. The surface of the attapulgite composite particles is modified by hydrolysis of perfluorodecyltriethoxysilane and tetraethyl orthosilicate, resulting in attapulgite composite particles modified with perfluorodecyltriethoxysilane, which have good hydrophobic properties, further improving the waterproof and hydrophobic properties of the waterproof coating. The attapulgite composite particles are nanoparticles with a stable structure, which further improves the mechanical properties of the waterproof coating.

[0011] Preferably, the attapulgite composite particles are prepared by the following method:

[0012] N,N-dimethylformamide, water, copper nitrate, and 2,3,6,7,10,11-hexahydroxytribenzene were mixed and stirred. Attapulgite nanoparticles were then added, and the mixture was heated and stirred in a water bath. After filtration and drying, attapulgite composite particles were obtained.

[0013] By adopting the above technical solution, nano-photothermal materials are grown in situ on the surface of attapulgite nanorods to obtain attapulgite composite particles. A large number of MOF particles are grown in situ on the surface of the attapulgite nanorods, forming a two-level nanostructure. The prepared attapulgite particles have good stability and mechanical strength, and make the attapulgite composite particles more stable during subsequent modification, thereby further improving the chemical stability of the prepared hydrophobic substrate.

[0014] Preferably, the composite hydrophobic component is prepared by the following method:

[0015] Ethanol and ammonia were mixed to obtain a mixed solution. Attapulgite composite particles were added to the mixed solution and stirred. Then, the mixture was ultrasonically treated to obtain a composite particle suspension. Perfluorodecyltriethoxysilane and tetraethyl orthosilicate were added to the composite particle suspension, stirred and reacted, and centrifuged to obtain a composite hydrophobic component.

[0016] By adopting the above technical solution, the surface of attapulgite composite particles is modified by hydrolysis and condensation of perfluorodecyltriethoxysilane and tetraethyl orthosilicate, thereby giving the attapulgite composite particles good hydrophobic properties and good stability.

[0017] Preferably, the ethanol content in the mixed solution is 26-28%.

[0018] By adopting the above technical solution, and preferably with the mass ratio of ethanol in the mixed solution within the above range, the stability of the prepared hydrophobic substrate can be further improved.

[0019] Preferably, the epoxy resin composite substrate comprises modified nano-titanium dioxide, zinc sulfide, graphene, and epoxy resin.

[0020] By adopting the above technical solution, adding a nano-system to the epoxy resin system can improve the overall bonding strength of the resin composite material. Simultaneously, it can protect the overall wear resistance and corrosion resistance of the coating system. Modified nano-titanium dioxide particles can further improve the tensile properties and wear resistance of the epoxy resin. The addition of graphite can further increase the elastic modulus of the epoxy resin, thereby improving the tensile strength of the epoxy resin composite substrate and enhancing its mechanical strength. Zinc sulfide can increase the density of the epoxy resin matrix, thus further improving the stability of the epoxy resin system. Furthermore, the added nanoparticles have excellent corrosion resistance, resulting in a waterproof coating with good corrosion resistance.

[0021] Preferably, the modified nano-titanium dioxide comprises nano-titanium dioxide and a titanate coupling agent.

[0022] Preferably, the modified nano-titanium dioxide is prepared by the following method:

[0023] Nano-titanium dioxide, ethanol, and water were mixed and ultrasonically dispersed. Then, a titanate coupling agent was added, and the mixture was heated to react. The reactants were then centrifuged to precipitate, washed, and dried to obtain modified nano-titanium dioxide.

[0024] By adopting the above technical solution, after modifying the surface of titanium dioxide with a titanate coupling agent, a nano-rough hydrophobic system is constructed. At the same time, it has good anti-corrosion and friction properties. The dispersion and binding properties of the modified nano-titanium dioxide in the resin matrix are improved, thereby improving the stability of the prepared resin matrix. Meanwhile, the hydrophobic properties of the prepared waterproof coating are further improved.

[0025] Preferably, the mass ratio between the nano-titanium dioxide and the titanate coupling agent is 1:(0.11-0.13).

[0026] By adopting the above technical solution, and preferably within the above range the mass ratio between nano-titanium dioxide and titanate coupling agent, the stability of the prepared modified nano-titanium dioxide can be further improved.

[0027] Preferably, the mass ratio of the epoxy resin, modified nano-titanium dioxide, graphene and zinc sulfide is 11:(0.8-1):1.3:1.

[0028] By adopting the above technical solution, and preferably within the above-mentioned range the mass ratio of epoxy resin, modified nano-titanium dioxide, graphene and zinc sulfide, the overall stability of the prepared epoxy resin matrix can be further improved.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. Attapulgite composite particles have good mechanical properties. When added to coatings, they can effectively improve the overall wear resistance and mechanical stability of the coating system. After the surface of the attapulgite composite particles is modified by hydrolysis of perfluorodecyltriethoxysilane and tetraethyl orthosilicate, the attapulgite composite particles have good hydrophobic properties, which further improves the overall hydrophobic and waterproof properties of the waterproof coating, and at the same time, the stability of the coating system is further improved.

[0031] 2. MOF particles are grown in situ on the surface of attapulgite nanoparticles to form a two-level nanostructure. The prepared attapulgite composite particles have good mechanical properties and stability. By combining the attapulgite composite particles with SPI binder, the prepared composite hydrophobic component can be more stably combined with other components, further improving the overall stability of the waterproof coating.

[0032] 3. By adding modified nano-titanium dioxide, zinc sulfide, and graphene to the epoxy resin composite substrate, the nanoparticles can fill the voids in the epoxy resin, thereby improving the density of the epoxy resin and protecting the overall wear resistance and corrosion resistance of the coating system, further enhancing the overall stability of the system. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the embodiments:

[0034] Raw material description: All raw materials in the examples are commercially available; the emulsion is styrene-acrylic emulsion (CAS No.: 25085-34-1); the latex is carboxylated nitrile latex; the defoamer is polysiloxane defoamer; and the curing agent is triethylenetetramine (CAS No.: 112-24-3).

[0035] Example 1

[0036] Preparation of modified nano-titanium dioxide:

[0037] 7.21 g of nano-titanium dioxide, 90 g of ethanol and 10 g of deionized water were mixed and ultrasonically dispersed for 1 h. Then, 0.79 g of titanate coupling agent (CAS No.: 65460-52-8) was added, the pH of the system was adjusted to 4 with acetic acid, the temperature was raised to 80 °C, and the reaction was carried out for 4 h. The reactants were then centrifuged to precipitate, and washed three times alternately with ethanol and deionized water. The product was then dried in an oven at 80 °C for 10 h to obtain modified nano-titanium dioxide.

[0038] Preparation of epoxy resin matrix:

[0039] 70g of ethanol and 2.84g of modified nano-titanium dioxide were mixed and stirred for 5 min. Then, 0.38g of polyvinylpyrrolidone (CAS No.: 9003-39-8) was added and stirred. 39g of epoxy resin, 12g of polydimethylsiloxane (CAS No.: 9016-00-6), and 60g of ethyl acetate (CAS No.: 141-78-6) were added and sonicated for 30 min. Then, 4.61g of graphene and 3.55g of zinc sulfide were added and stirred at 3000 r / min for 60 min. The mixture was stirred at 120℃ for 2 h and cooled to 25℃ to obtain the epoxy resin matrix.

[0040] Preparation of attapulgite composite particles:

[0041] 10g of N,N-dimethylformamide (CAS No.: 68-12-2) and 100g of deionized water were mixed to obtain an N,N-dimethylformamide mixture. 29.1g of copper nitrate and 19.5g of 2,3,6,7,10,11-hexahydroxytriphenyl (CAS No.: 4877-80-9) were added sequentially to the N,N-dimethylformamide mixture and stirred for 10min. Then, 50g of attapulgite nanoparticles (CAS No.: 1337-76-4) were added. The mixture was stirred at 500r / min for 6h in a water bath at 85℃. After filtration, the mixture was dried in an oven at 80℃ to obtain attapulgite composite particles.

[0042] Preparation of composite hydrophobic components:

[0043] 260g of ethanol and 740g of ammonia were mixed to obtain a mixed solution. 30g of attapulgite composite particles were added to the mixed solution and stirred for 10min. Then, the mixture was sonicated for 5min to obtain a composite particle suspension. 24g of perfluorodecyltriethoxysilane (CAS No.: 101947-16-4) and 3g of tetraethyl orthosilicate were added to the composite particle suspension and stirred at 25℃ for 2h. After centrifugation, the composite hydrophobic component was obtained.

[0044] Preparation of waterproof coating:

[0045] Mix 80g of SBS modified bitumen, 60g of emulsion, 40g of rubber latex, 30g of epoxy resin composite substrate, 18g of composite hydrophobic component, 8g of defoamer, 30g of curing agent, and 80g of water, and stir for 60 minutes to obtain a waterproof coating.

[0046] Example 2

[0047] Preparation of modified nano-titanium dioxide:

[0048] 7.08 g of nano-titanium dioxide, 90 g of ethanol and 10 g of deionized water were mixed and ultrasonically dispersed for 1 h. Then, 0.92 g of titanate coupling agent was added, the pH of the system was adjusted to 4 with acetic acid, the temperature was raised to 80 °C, and the reaction was carried out for 4 h. The reactants were then centrifuged to precipitate, and washed three times alternately with ethanol and deionized water. The product was then dried in an oven at 80 °C for 10 h to obtain modified nano-titanium dioxide.

[0049] Preparation of epoxy resin matrix:

[0050] 70g of ethanol and 3.5g of modified nano-titanium dioxide were mixed and stirred for 5 min. Then, 0.38g of polyvinylpyrrolidone was added and stirred. 38.45g of epoxy resin, 12g of polydimethylsiloxane and 60g of ethyl acetate were added and sonicated for 30 min. Then, 4.55g of graphene and 3.5g of zinc sulfide were added and stirred at 3000 r / min for 60 min. The mixture was stirred at 120℃ for 2 h and cooled to 25℃ to obtain the epoxy resin matrix.

[0051] Preparation of attapulgite composite particles:

[0052] 10g of N,N-dimethylformamide and 100g of deionized water were mixed to obtain an N,N-dimethylformamide mixture. 29.1g of copper nitrate and 19.5g of 2,3,6,7,10,11-hexahydroxytriphenyl were added sequentially to the N,N-dimethylformamide mixture and stirred for 10min. Then, 50g of attapulgite nanoparticles were added, and the mixture was stirred at 500r / min for 6h in a water bath at 85℃. After filtration, the mixture was dried in an oven at 80℃ to obtain attapulgite composite particles.

[0053] Preparation of composite hydrophobic components:

[0054] 280g of ethanol and 720g of ammonia were mixed to obtain a mixed solution. 30g of attapulgite composite particles were added to the mixed solution and stirred for 10min. Then, the mixture was sonicated for 5min to obtain a composite particle suspension. 24g of perfluorodecyltriethoxysilane and 3g of tetraethyl orthosilicate were added to the composite particle suspension and stirred at 25℃ for 2h. After centrifugation, the composite hydrophobic component was obtained.

[0055] Preparation of waterproof coating:

[0056] Mix 100g of SBS modified bitumen, 80g of emulsion, 60g of rubber latex, 40g of epoxy resin composite substrate, 22g of composite hydrophobic component, 10g of defoamer, 40g of curing agent, and 100g of water, and stir for 60 minutes to obtain a waterproof coating.

[0057] Example 3

[0058] Preparation of modified nano-titanium dioxide:

[0059] 7.14 g of nano-titanium dioxide, 90 g of ethanol and 10 g of deionized water were mixed and ultrasonically dispersed for 1 h. Then, 0.86 g of titanate coupling agent was added, the pH of the system was adjusted to 4 with acetic acid, the temperature was raised to 80 °C, and the reaction was carried out for 4 h. The reactants were then centrifuged to precipitate, and washed three times alternately with ethanol and deionized water. The product was then dried in an oven at 80 °C for 10 h to obtain modified nano-titanium dioxide.

[0060] Preparation of epoxy resin matrix:

[0061] 70g of ethanol and 3.17g of modified nano-titanium dioxide were mixed and stirred for 5 min. Then, 0.38g of polyvinylpyrrolidone was added and stirred. 38.73g of epoxy resin, 12g of polydimethylsiloxane and 60g of ethyl acetate were added and sonicated for 30 min. Then, 4.58g of graphene and 3.52g of zinc sulfide were added and stirred at 3000 r / min for 60 min. The mixture was stirred at 120℃ for 2 h and cooled to 25℃ to obtain the epoxy resin matrix.

[0062] Preparation of attapulgite composite particles:

[0063] 10g of N,N-dimethylformamide and 100g of deionized water were mixed to obtain an N,N-dimethylformamide mixture. 29.1g of copper nitrate and 19.5g of 2,3,6,7,10,11-hexahydroxytriphenyl were added sequentially to the N,N-dimethylformamide mixture and stirred for 10min. Then, 50g of attapulgite nanoparticles were added, and the mixture was stirred at 500r / min for 6h in a water bath at 85℃. After filtration, the mixture was dried in an oven at 80℃ to obtain attapulgite composite particles.

[0064] Preparation of composite hydrophobic components:

[0065] 270g of ethanol and 730g of ammonia were mixed to obtain a mixed solution. 30g of attapulgite composite particles were added to the mixed solution and stirred for 10min. Then, the mixture was sonicated for 5min to obtain a composite particle suspension. 24g of perfluorodecyltriethoxysilane and 3g of tetraethyl orthosilicate were added to the composite particle suspension and stirred at 25℃ for 2h. After centrifugation, the composite hydrophobic component was obtained.

[0066] Preparation of waterproof coating:

[0067] Mix 90g of SBS modified bitumen, 70g of emulsion, 50g of rubber latex, 35g of epoxy resin composite substrate, 20g of composite hydrophobic component, 9g of defoamer, 35g of curing agent, and 90g of water, and stir for 60 minutes to obtain a waterproof coating.

[0068] Example 4

[0069] Example 4 is based on Example 3. The difference between Example 4 and Example 3 is that in Example 4, 7.41g of nano-titanium dioxide and 0.59g of titanate coupling agent were used in the preparation of modified nano-titanium dioxide.

[0070] Example 5

[0071] Example 5 is based on Example 3. The difference between Example 5 and Example 3 is that in Example 3, 6.7g of nano-titanium dioxide and 1.3g of titanate coupling agent were used in the preparation of modified nano-titanium dioxide.

[0072] Example 6

[0073] Example 6 is based on Example 3. The difference between Example 6 and Example 3 is that in Example 6, when preparing the epoxy resin composite substrate, 39.56g of epoxy resin, 2.16g of modified nano-silica, 4.68g of graphene, and 3.6g of zinc sulfide were used.

[0074] Example 7

[0075] Example 7 is based on Example 3. The difference between Example 7 and Example 3 is that in Example 7, when preparing the epoxy resin composite substrate, the amount of epoxy resin used is 37.93g, the amount of modified nano-silica is 4.14g, the amount of graphene is 4.48g, and the amount of zinc sulfide is 3.45g.

[0076] Example 8

[0077] Example 8 is based on Example 3. The difference between Example 8 and Example 3 is that in Example 8, when preparing the composite hydrophobic component, the mixed solution is prepared with 230g of ethanol and 770g of ammonia.

[0078] Example 9

[0079] Example 9 is based on Example 3. The difference between Example 9 and Example 3 is that in Example 9, when preparing the composite hydrophobic component, the mixed solution is prepared with 300g of ethanol and 700g of ammonia.

[0080] Example 10

[0081] Example 10 is based on Example 3. The difference between Example 10 and Example 3 is that when preparing the epoxy resin composite substrate, the modified nano titanium dioxide is replaced with an equal amount of unmodified nano titanium dioxide.

[0082] Example 11

[0083] Example 11 is based on Example 3. The difference between Example 11 and Example 3 is that in Example 11, graphene is replaced with an equal amount of epoxy resin when preparing the epoxy resin composite substrate.

[0084] Example 12

[0085] Example 12 is based on Example 3. The difference between Example 12 and Example 3 is that in Example 12, zinc sulfide is replaced with an equal amount of epoxy resin when preparing the epoxy resin composite substrate.

[0086] Comparative Example 1

[0087] Comparative Example 1 is based on Example 3, except that the epoxy resin composite substrate is replaced with an equal amount of ordinary epoxy resin.

[0088] Comparative Example 2

[0089] Comparative Example 2 is based on Example 3. In Comparative Example 2, when preparing the composite hydrophobic component, the attapulgite composite particles were replaced with an equal amount of attapulgite nanoparticles.

[0090] Performance testing

[0091] The following performance tests were performed on the samples from Examples 1-12 and Comparative Examples 1-2:

[0092] (1) Waterproof performance

[0093] The hydrophobic angle of the samples was tested three times for each sample, and the average value was taken. The test results were recorded in Table 1.

[0094] (2) Wear resistance

[0095] RCA wear was measured using a Norman RCA abrasion tester with a load of 175g. The abrasion resistance of the samples was tested three times for each sample, and the average value was taken. The test results were recorded in Table 1.

[0096] (3) The corrosion resistance performance was tested according to GB / T 1771. Each sample was tested 3 times, the average value was taken, and the test results were filled in Table 1.

[0097] Table 1 Performance test results of Examples 1-12 and Comparative Examples 1-2

[0098]

[0099]

[0100] As shown in Table 1, the waterproof performance of Examples 1-3 is 151° or higher, indicating that the waterproof coating prepared in this application has good waterproof performance; the RCA abrasion of Examples 1-3 is 12225 cycles or higher, indicating that the waterproof coating prepared in this application has good corrosion resistance; and the salt spray resistance time of Examples 1-3 is 717 hours or higher, indicating that the waterproof coating prepared in this application has good corrosion resistance.

[0101] In Examples 4 and 5, the mass ratio between nano-titanium dioxide and titanate coupling agent during the preparation of modified nano-titanium dioxide was not within the range specified in this application. When the amount of titanate coupling agent used was too small, it was difficult to fully modify the nano-titanium dioxide, the hydrophobic angle of the nano-titanium dioxide was difficult to further improve, the hydrophobicity decreased, and the dispersibility in the system was difficult to improve, affecting the overall stability of the system. When the amount of titanate coupling agent used was too large, it would cause self-aggregation, thereby affecting the dispersibility of nano-titanium dioxide. Therefore, the performance of Examples 4 and 5 was reduced.

[0102] In Examples 6 and 7, the mass ratios of epoxy resin, modified nano-silica, graphene, and zinc sulfide during the preparation of the epoxy resin composite substrate were not within the range specified in this application. When the content of modified nano-silica was too low, it was difficult to further fill the voids in the epoxy resin, thus making it difficult to further improve the mechanical tensile properties of the epoxy resin. Furthermore, the content of hydrophobic components decreased, affecting the waterproof performance of the system. When the content of modified nano-silica was too high, it led to stress concentration in the epoxy resin, ultimately affecting the overall mechanical strength of the system and reducing its stability. Therefore, the overall performance of Examples 6 and 7 was reduced.

[0103] In Examples 8 and 9, the mass ratio of ethanol and ammonia in the mixed solution during the preparation of the composite hydrophobic component was not within the range specified in this application. When the ethanol content was too low, the surface roughness of the coating was difficult to improve further, making it difficult to further improve the hydrophobic performance. At the same time, the bonding performance between the composite hydrophobic component and other components in the system was difficult to improve, resulting in decreased stability. When the amount of ethanol added was too high, it would affect the overall stability of the system, thereby affecting the comprehensive performance of the system. Therefore, the performance of Examples 8 and 9 both decreased.

[0104] In Example 10, when preparing the epoxy resin composite substrate, the modified nano-titanium dioxide was replaced with unmodified nano-titanium dioxide. Ordinary nano-titanium dioxide is difficult to bond with epoxy resin to form a surface micro-nano structure, and the hydrophobic angle is difficult to be further improved, resulting in a decrease in the waterproof performance of the system. At the same time, the dispersion performance of nano-titanium dioxide is difficult to be further improved, which also reduces the overall stability of the system. Therefore, the overall performance of Example 10 is reduced.

[0105] In Example 11, graphene was replaced with an equal amount of epoxy resin, and in Example 12, zinc sulfide was replaced with an equal amount of epoxy resin. Without the addition of graphene or zinc sulfide, it was difficult to further fill the epoxy resin, thus the stability of the epoxy resin could not be further improved. Therefore, the performance of Examples 11 and 12 was reduced.

[0106] In Comparative Example 1, the epoxy resin composite substrate was replaced with ordinary epoxy resin. Without the addition of the nano system, the epoxy resin was difficult to fill further, resulting in a decrease in mechanical strength and corrosion resistance. At the same time, the stability was difficult to improve further. Therefore, the performance of Comparative Example 1 was reduced.

[0107] In Comparative Example 2, when preparing the hydrophobic component, the attapulgite composite particles were replaced with an equal amount of attapulgite composite particles. The surface of ordinary attapulgite composite particles was not coated with MOFs material, which reduced the stability of the prepared hydrophobic component. At the same time, the effect of subsequent surface hydrophobic modification of attapulgite composite particles was also reduced. Therefore, the performance of Comparative Example 2 was reduced.

[0108] This specific embodiment is merely an explanation of this application and is not intended to limit it. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application. The technical scope of this application is not limited to the contents of the specification but must be determined according to the scope of the claims.

Claims

1. An SBS-modified bitumen water-emulsion waterproof coating, characterized in that: The components include the following parts by weight: 80-100 parts of SBS modified bitumen, 60-80 parts of emulsion, 40-60 parts of rubber latex, 30-40 parts of epoxy resin composite substrate, 18-22 parts of composite hydrophobic component, 8-10 parts of defoamer, 30-40 parts of curing agent, and 80-100 parts of water. The composite hydrophobic component includes attapulgite composite particles, perfluorodecyltriethoxysilane and tetraethyl orthosilicate; The attapulgite composite particles were prepared using the following method: N,N-dimethylformamide, water, copper nitrate and 2,3,6,7,10,11-hexahydroxytribenzene were mixed, stirred and then attapulgite nanoparticles were added. The mixture was heated and stirred in a water bath, filtered and dried to obtain attapulgite composite particles. The composite hydrophobic component was prepared using the following method: Ethanol and ammonia were mixed to obtain a mixed solution. Attapulgite composite particles were added to the mixed solution and stirred. Then, ultrasonic treatment was performed to obtain a composite particle suspension. Perfluorodecyltriethoxysilane and tetraethyl orthosilicate were added to the composite particle suspension, stirred and reacted, and centrifuged to obtain a composite hydrophobic component. The epoxy resin composite substrate includes modified nano-titanium dioxide, zinc sulfide, graphene, and epoxy resin. The modified nano-titanium dioxide comprises nano-titanium dioxide and a titanate coupling agent; The mass ratio between the nano-titanium dioxide and the titanate coupling agent is 1:(0.11-0.13); The mass ratio of the epoxy resin, modified nano-titanium dioxide, graphene and zinc sulfide is 11:(0.8-1):1.3:

1.

2. The SBS modified bitumen water-emulsion waterproof coating according to claim 1, characterized in that: The ethanol content in the mixed solution is 26-28%.

3. The SBS modified bitumen water-emulsion waterproof coating according to claim 1, characterized in that: The modified nano-titanium dioxide was prepared by the following method: Nano-titanium dioxide, ethanol, and water were mixed and ultrasonically dispersed. Then, a titanate coupling agent was added, and the mixture was heated to react. The reactants were then centrifuged to precipitate, washed, and dried to obtain modified nano-titanium dioxide.

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