Novel modified asphalt waterproof coiled material with long service life

Abstract

The invention relates to the field of buildings, and particularly discloses a novel modified asphalt waterproof coiled material with long service life. The waterproof roll is prepared by the following steps: mixing a macromolecular waterproof sheet with two fabric reinforcing layers, and forming a matrix by taking the macromolecular waterproof sheet as a core layer; the tire body is dried until the tire body is dried; the dried tire body is subjected to asphalt presoaking treatment; and covering an anti-sticking isolating layer to obtain the waterproof roll. The waterproof coiled material can be used in the field of building waterproofing, and has the characteristics of watertightness and excellent waterproof durability.

Description

Technical Field

[0001] The present invention relates to the field of construction, and more particularly to a novel modified asphalt waterproofing membrane with a long service life. Background Art

[0002] In the construction field, waterproofing materials are key elements to ensure that building structures and interior spaces are protected from moisture intrusion and damage.

[0003] Traditional waterproof membranes are usually composed of a carcass and a surface covering layer, wherein the carcass plays a waterproofing function, while the surface covering layer is used to protect the carcass from damage by the external environment.

[0004] However, the existing waterproof roll material carcass usually only includes one layer of fabric, such as a polyester carcass, and its waterproof performance has certain limitations, resulting in poor water-impermeability and waterproof durability of the waterproof roll material, resulting in a short service life. Summary of the invention

[0005] In order to improve the impermeability and waterproof durability of waterproof membranes, thereby increasing the service life of waterproof membranes, the present application provides a new modified asphalt waterproof membrane with a long service life.

[0006] The present application provides a new type of modified asphalt waterproofing membrane with a long service life, which adopts the following technical solution: A new type of modified asphalt waterproofing membrane with a long service life is prepared by the following steps: (1) Mix a polymer waterproof sheet with two layers of fabric reinforcement, with the polymer waterproof sheet as the core layer to form a carcass; (2) Drying the tire body until it is dry; (3) Pre-impregnating the dried tire body with asphalt; (4) Covering with an anti-adhesive isolation layer to obtain a waterproof membrane.

[0007] By adopting the above technical solution, due to the composite structure of the double-layer fabric reinforcement layer and the polymer waterproof sheet, firstly, the double-layer fabric reinforcement layer has obvious advantages in waterproof performance compared with the traditional single-layer fabric carcass, which not only increases the strength and stability of the roll material, but also can more effectively resist external stress and damage. This enables the new waterproof roll material to maintain integrity in complex construction environments and provide reliable waterproof protection. Secondly, the polymer waterproof sheet has excellent waterproof performance, which can prevent the penetration of water and effectively protect the building structure and interior space from water damage. Compared with the traditional single-layer fabric carcass, the polymer waterproof sheet can provide higher impermeability and ensure the waterproof effect of the building under severe weather conditions. The use of this waterproof sheet can also improve the durability of the waterproof roll material, extend its service life, and reduce the frequency of maintenance and replacement.

[0008] In addition to the composite structure of the double-layer fabric reinforcement layer and the polymer waterproof sheet, the drying and pre-impregnation asphalt treatment in the carcass treatment step further enhance the tensile properties and durability of the waterproof membrane. The drying treatment ensures that the carcass is in a dry state, eliminating the influence of moisture and volatile components. The pre-impregnation asphalt treatment can increase the durability of the carcass, improve its anti-aging properties, and improve the carcass's anti-ultraviolet ability. Therefore, the waterproof membrane's impermeability and waterproof durability are improved, thereby increasing the service life of the waterproof membrane.

[0009] Optionally, the polymer waterproof sheet is made of ethylene copolymer modified asphalt.

[0010] By adopting the above technical solution, the polymer waterproof sheet can be selected as needed, with a good customization effect. However, by using the polymer waterproof sheet made of ethylene copolymer modified asphalt, the impermeability of the waterproof roll is better improved.

[0011] Optionally, the fabric reinforcement layer is a composite of one or more of polyester base fabric, glass fiber base fabric or polyethylene base fabric.

[0012] By adopting the above technical solution, the fabric reinforcement layer can be selected on demand according to different performance requirements, with good customization effect.

[0013] Optionally, the fabric reinforcement layer is composited by a polyester base fabric and a polyethylene base fabric.

[0014] By adopting the above technical solution and the composite material, the composite material can be more water-resistant than a single-layer polyester tire and more thermally dimensional stable than a single-layer polyethylene tire.

[0015] Optionally, in the pre-impregnation asphalt treatment, modified asphalt is used, and the modified asphalt includes the following raw materials in parts by weight: 40-60 parts of No. 70 base asphalt; 6-9 parts of naphthenic oil; SBS modifier 4-7 parts; 18-22 parts of waste rubber powder; 6 to 12 parts of anti-ultraviolet additives, including zinc oxide, flaky aluminum oxide powder and benzotriazole ultraviolet absorber in a weight ratio of 1:1:1.

[0016] By adopting the above technical scheme, anti-ultraviolet additives are added to the modified asphalt raw materials, among which zinc oxide can reflect ultraviolet rays, flaky aluminum oxide powder can reflect light, and benzoazole ultraviolet absorbers are used to absorb ultraviolet rays. Under the combined effect of the three raw materials, the damage of ultraviolet rays to the waterproof membrane can be effectively reduced, and the anti-ultraviolet ability of the modified asphalt and the waterproof membrane obtained by coating it is improved, thereby prolonging the service life of the waterproof membrane.

[0017] Optionally, the modified asphalt further comprises 6 to 8 parts by weight of triple-UV protection glue and 10 to 15 parts by weight of polypropylene mesh fibers.

[0018] By adopting the above technical scheme, the polypropylene mesh fiber is impregnated with triple-UV proof glue, and the mesh structure can form a supporting structure inside the modified asphalt to improve the mechanical strength of the waterproof membrane. When exposed to strong ultraviolet rays, the ultraviolet rays reflected by the zinc oxide and flaky aluminum oxide powder can be concentrated on the triple-UV proof glue on the polypropylene mesh fiber to solidify it, further enhancing the UV resistance and strength performance of the waterproof membrane and reducing cracking and aging.

[0019] Optionally, the preparation method of the modified asphalt is: fully heating No. 70 base asphalt at 130-150°C to a molten state, adding cyclohexane oil for blending; adding SBS modifier and waste rubber powder, and shearing the mixture at high speed for 1.8-2.5 hours at a temperature of 140-160°C until the SBS modifier and waste rubber powder are fully swollen and developed; finally, adding an anti-ultraviolet additive to the asphalt mixture, and then mechanically stirring it evenly to obtain modified asphalt.

[0020] By adopting the above technical solution and the preparation method, modified asphalt with excellent UV resistance can be produced, thereby improving the UV resistance of the waterproof membrane.

[0021] Optionally, the preparation method of the modified asphalt is as follows: immersing the polypropylene mesh fiber in triple-proof UV glue until the surface of the polypropylene mesh fiber is completely impregnated with the triple-proof UV glue and setting aside; fully heating No. 70 base asphalt at 130-150°C to a molten state, adding cyclohexane oil for blending; adding SBS modifier and waste rubber powder, and shearing the mixture at a high speed for 1.8-2.5 hours at a temperature of 140-160°C until the SBS modifier and waste rubber powder are fully swollen and developed; finally, adding an anti-ultraviolet additive and the polypropylene mesh fiber impregnated with the triple-proof UV glue into the asphalt mixture, and then mechanically stirring it evenly to obtain the modified asphalt.

[0022] By adopting the above technical solution, the surface of the polypropylene mesh fiber is first impregnated with triple-proof UV glue, which can effectively reduce the loss of the triple-proof UV glue and maximize the improvement of the anti-ultraviolet ability of the waterproof membrane.

[0023] In summary, this application has the following beneficial effects: 1. Due to the composite structure of the double-layer fabric reinforcement layer and the polymer waterproof sheet, as well as the optimization of the carcass processing steps, the present invention achieves excellent waterproof performance and durability. This innovative design has a wide range of application prospects in the field of construction and can be used for waterproofing projects such as roofs, basements, floors and walls of various buildings. The use of new waterproof membranes will improve the waterproof protection level of buildings, reduce the cost of maintenance and replacement, and extend the service life of buildings.

[0024] 2. In this application, it is preferred to improve the base of the waterproof roll material and compound the polymer waterproof sheet with two layers of fabric reinforcement to improve the product's water-impermeable performance. Compared with the traditional single-layer fabric base, this improvement can significantly improve the overall performance and durability of the waterproof roll material, making it more effective in preventing water penetration, thereby protecting the building structure and interior space from water damage.

[0025] 3. This application uses materials such as polymer waterproof sheets and modified asphalt, which can better control and reduce the impact on the environment during the preparation process. At the same time, since the waterproof membrane has a long service life and durability, the frequency of maintenance and replacement can be reduced, further reducing the impact on the environment. DETAILED DESCRIPTION

[0026] The present application is further described in detail with reference to the following examples. It is specially noted that if no specific conditions are specified in the following examples, the conventional conditions or the conditions recommended by the manufacturer are followed, and the raw materials used in the following examples can be obtained from common commercial sources unless otherwise specified.

[0027] ECB waterproof sheets are purchased from Shandong Yingzhixiang Engineering Materials Co., Ltd.; HDPE waterproof sheets are purchased from Keshun Waterproof Technology Co., Ltd.; The long-fiber polyester tire base fabric was purchased from Weifang Shengqiu Waterproof Material Co., Ltd. The polyethylene tire base fabric was purchased from Langfang Fuxuan Environmental Protection Technology Co., Ltd.; The fiberglass base fabric is a glass fiber reinforced polyester base fabric purchased from Tiandingfeng Holdings Co., Ltd. The PE isolation film was purchased from Dongguan Shuotai Industrial Co., Ltd.; SBS modifier product number LG~501; Zinc oxide CAS 1314-13-2, particle size 30-50nm; Flaky alumina powder was purchased from Henan Taoang Industrial Co., Ltd., order number TAWAP12, 12 μm; Benzotriazole UV absorbers were purchased from Wuhan Nobiguo Biotechnology Co., Ltd., CAS 3147-75-9; The triple-proof UV adhesive was purchased from Shenzhen Libang New Material Technology Co., Ltd., item number LB~3708; Polypropylene mesh fiber was purchased from Shandong Yiheng Engineering Materials Co., Ltd.

[0028] Preparation Example 1 The modified asphalt includes the following raw materials: 40 kg of No. 70 base asphalt; 6 kg of cyclohexane oil; 4 kg of SBS modifier; 22 kg of waste rubber powder; and 6 kg of anti-ultraviolet additive, including zinc oxide, flaky aluminum oxide powder and benzotriazole ultraviolet absorber in a weight ratio of 1:1:1.

[0029] The preparation method of modified asphalt is as follows: No. 70 base asphalt is fully heated to a molten state in a high-temperature oven at 130°C, naphthenic oil is added for blending, and then weighed SBS modifier and waste rubber powder are added, and the mixture is placed in a high-temperature oil bath pot at 140°C, and a high-speed shearing machine is used to shear at 4000r / min for 2.5h until the SBS modifier and waste rubber powder are fully swollen and developed. Finally, an anti-ultraviolet additive is added to the asphalt mixture, and then mechanically stirred until uniform, to obtain modified asphalt.

[0030] Preparation Example 2 The difference between this preparation example and preparation example 1 is that the amounts of various raw materials used are different, see Table 1 for details.

[0031] The preparation method of modified asphalt is as follows: fully heat No. 70 base asphalt in a high-temperature oven at 140°C to a molten state, add cyclohexane oil for blending, then add weighed SBS modifier and waste rubber powder, and place the mixture in a high-temperature oil bath at 150°C, use a high-speed shearing machine, and high-speed shear at 4000r / min for 2h until the SBS modifier and waste rubber powder are fully swollen and developed. Finally, add an anti-ultraviolet additive to the asphalt mixture, and then mechanically stir until uniform, and the modified asphalt can be obtained.

[0032] Preparation Example 3 The difference between this preparation example and preparation example 1 is that the amounts of various raw materials used are different, see Table 1 for details.

[0033] The preparation method of modified asphalt is as follows: fully heat No. 70 base asphalt in a high-temperature oven at 150°C to a molten state, add cyclohexane oil for blending, then add weighed SBS modifier and waste rubber powder, and place the mixture in a high-temperature oil bath at 160°C, use a high-speed shearing machine, and high-speed shear at 4000r / min for 1.8h until the SBS modifier and waste rubber powder are fully swollen and developed. Finally, add an anti-ultraviolet additive to the asphalt mixture, and then mechanically stir until uniform, and the modified asphalt can be obtained.

[0034] Preparation Example 4 The modified asphalt includes the following raw materials: 50kg of No. 70 base asphalt; 8kg of cyclohexane oil; 5kg of SBS modifier; 20kg of waste rubber powder; 9kg of anti-UV additive, including zinc oxide, flaky alumina powder and benzotriazole ultraviolet absorber in a weight ratio of 1:1:1; 6kg of triple-proof UV glue; and 10kg of polypropylene mesh fiber.

[0035] The preparation method of modified asphalt is as follows: immerse polypropylene mesh fiber in triple-UV anti-adhesive until the surface of polypropylene mesh fiber is completely impregnated with triple-UV anti-adhesive and set aside; fully heat No. 70 base asphalt in a high-temperature oven at 130°C to a molten state, add cyclohexane oil for blending, then add weighed SBS modifier and waste rubber powder, and place the mixture in a high-temperature oil bath at 140°C, use a high-speed shearing machine, and high-speed shear at 4000r / min for 2.5h until the SBS modifier and waste rubber powder are fully swollen and developed. Finally, add anti-ultraviolet additives to the asphalt mixture, and then mechanically stir until uniform, and the modified asphalt can be obtained.

[0036] Preparation Example 5 The difference between this preparation example and preparation example 4 is that the amounts of the raw materials used are different.

[0037] The preparation method of modified asphalt is as follows: immerse polypropylene mesh fiber in triple-UV anti-adhesive until the surface of polypropylene mesh fiber is completely impregnated with triple-UV anti-adhesive and set aside; fully heat No. 70 base asphalt in a high-temperature oven at 140°C to a molten state, add cyclohexane oil for blending, then add weighed SBS modifier and waste rubber powder, and place the mixture in a high-temperature oil bath at 150°C, use a high-speed shearing machine, and high-speed shear at 4000r / min for 2h until the SBS modifier and waste rubber powder are fully swollen and developed. Finally, add anti-ultraviolet additives to the asphalt mixture, and then mechanically stir until uniform, and the modified asphalt can be obtained.

[0038] Preparation Example 6 The difference between this preparation example and preparation example 4 is that the amounts of the raw materials used are different.

[0039] The preparation method of modified asphalt is as follows: immerse polypropylene mesh fiber in triple-UV anti-adhesive until the surface of polypropylene mesh fiber is completely impregnated with triple-UV anti-adhesive and set aside; fully heat No. 70 base asphalt in a high-temperature oven at 150°C to a molten state, add cyclohexane oil for blending, then add weighed SBS modifier and waste rubber powder, and place the mixture in a high-temperature oil bath at 160°C, use a high-speed shearing machine, and high-speed shear at 4000r / min for 1.8h until the SBS modifier and waste rubber powder are fully swollen and developed. Finally, add anti-ultraviolet additives to the asphalt mixture, and then mechanically stir until uniform, and the modified asphalt can be obtained.

[0040] Preparation Example 7 The difference between this preparation example and preparation example 5 is that there is no polypropylene mesh fiber in this preparation example.

[0041] Preparation Example 8 The difference between this preparation example and preparation example 5 is that there is no triple-anti-UV glue in this preparation example.

[0042] Preparation Example 9 The difference between this preparation example and preparation example 2 is that there is no anti-ultraviolet auxiliary agent in this preparation example.

[0043] Preparation Example 10 The difference between this preparation example and preparation example 2 is that there is no flaky aluminum oxide powder and benzotriazole ultraviolet absorber in this preparation example.

[0044] Preparation Example 11 The difference between this preparation example and preparation example 2 is that there is no zinc oxide and benzotriazole ultraviolet absorber in this preparation example.

[0045] Preparation Example 12 The difference between this preparation example and preparation example 2 is that there is no zinc oxide and flaky aluminum oxide powder in this preparation example.

[0046] Preparation Example 13 The difference between this preparation example and preparation example 2 is that there is no zinc oxide in this preparation example.

[0047] Preparation Example 14 The difference between this preparation example and preparation example 2 is that there is no flaky aluminum oxide powder in this preparation example.

[0048] Preparation Example 15 The difference between this preparation example and preparation example 2 is that there is no benzotriazole ultraviolet absorber in this preparation example.

[0049] Table 1 Amount of raw materials used for modified asphalt in each preparation example Example Example

[0050] A new type of modified asphalt waterproofing membrane with a long service life is prepared by the following steps: (1) Take a polymer waterproof sheet and two layers of fabric reinforcement, where the polymer waterproof sheet is made of ethylene copolymer modified asphalt sheet (i.e. ECB waterproof sheet) slices with a thickness of 2 mm; the fabric reinforcement layer is made of a composite of polyester base fabric and polyethylene base fabric, and the polyester base fabric is a long-fiber polyester base fabric with a surface density of 200 g / m 2 , thickness is 2mm, and the thickness of the polyethylene base cloth is 0.3mm.

[0051] The preparation method of the fabric reinforcement layer is as follows: take a polyester tire base cloth and a polyethylene tire base cloth and overlap them together, set the roller temperature to 160°C, the roller gap to 1mm, press them together with hot rollers, and trim them to obtain the fabric reinforcement layer.

[0052] The polymer waterproof sheet is used as the core layer, and the polymer waterproof sheet is hot-melted with two fabric reinforcement layers at a hot-melt temperature of 200° C. The thickness of the finished product is controlled to be 2 mm to form a carcass.

[0053] (2) Dry the tire body at a temperature of 150°C until the tire body is dry.

[0054] (3) The carcass after drying was pre-impregnated with asphalt, with No. 70 asphalt as the prepreg. The production line speed and the belt roller speed were both kept constant at 30 m / min, the prepreg temperature was controlled at 200 °C, the impregnation depth was full immersion, the extrusion method was three-roll extrusion, the extrusion pressure was 0.4 MPa, and the prepreg dosage was 0.5 kg / m 2 .

[0055] (4) After the pre-impregnated asphalt carcass is cooled to room temperature, it is covered on both sides with an anti-sticking isolation layer, i.e., a PE isolation film, to obtain a waterproof membrane. Example

[0056] The difference between this embodiment and embodiment 1 is that the polymer waterproof sheet in this embodiment is made by slicing HDPE waterproof sheet. Example

[0057] The difference between this embodiment and embodiment 1 is that the fabric reinforcement layer is a polyester base fabric. Example

[0058] The difference between this embodiment and embodiment 1 is that the fabric reinforcement layer is a glass fiber base fabric. Example

[0059] The difference between this embodiment and embodiment 1 is that the fabric reinforcement layer is a polyethylene base fabric.

[0060] Embodiment 6 to Embodiment 20 The difference between the following examples and Example 1 is that in the pre-impregnation asphalt treatment, modified asphalt prepared in different preparation examples is used, see Table 2 for details.

[0061] Table 2 Materials used for waterproofing membranes in various embodiments

[0062] Comparative Example 1 A waterproof membrane made solely of polyester batt.

[0063] Comparative Example 2 The difference between this comparative example and Example 1 is that the carcass is made of only a polymer waterproof sheet without a fabric reinforcement layer, and the carcass thickness remains unchanged.

[0064] Comparative Example 3 The difference between this comparative example and Example 1 is that the carcass is made of only the fabric reinforcement layer and the carcass thickness remains unchanged.

[0065] Comparative Example 4 The difference between this comparative example and Example 1 is that the carcass includes a polymer waterproof sheet and a fabric reinforcement layer, and the carcass thickness remains unchanged.

[0066] Comparative Example 5 The difference between this comparative example and Example 1 is that the carcass is not pre-impregnated with asphalt.

[0067] 1. Referring to "GB / T 328.10-2007 Test methods for building waterproof membranes Part 10: Waterproofness of bitumen and polymer waterproof membranes", method B was adopted, and a 7-hole disc was selected to test the watertightness of the waterproof membrane. The maximum watertight pressure value of the test piece when the pressure was maintained for 30 minutes was measured, as shown in Table 3.

[0068] 2. Referring to “GB / T 328.8~2007 Test methods for building waterproof membranes Part 8: Tensile properties of asphalt waterproof membranes”, the maximum peak tensile force of the specimens was measured, as shown in Table 3.

[0069] 3. Referring to “GB / T 328.13~2007 Test methods for building waterproof membranes Part 13: Dimensional stability of polymer waterproof membranes”, the longitudinal dimensional change rate δL and transverse dimensional change rate δT of the specimens were measured, as shown in Table 3.

[0070] 4. Refer to "GB / T 328.11~2007 Test methods for building waterproof membranes Part 11: Heat resistance of bitumen waterproof membranes" and proceed according to Method A. Under the condition of no slippage, flow or dripping, the heat resistance limit temperature is measured, as shown in Table 3.

[0071] 5. Refer to "6 Artificial climate accelerated aging ~ xenon arc lamp" in "GB / T 18244 ~ 2022 Test method for aging of building waterproof materials" to accelerate aging of the specimens, with a cumulative irradiation energy of 1500MJ / m 2 , and then test the specimen appearance and tensile retention rate.

[0072] The tensile retention rate is tested with reference to "GB / T 328.8~2007 Test methods for building waterproof membranes Part 8: Tensile properties of bitumen waterproof membranes". The tensile retention rate = tensile force before specimen treatment / tensile force after specimen treatment*100%, as shown in Table 3.

[0073] 6. Refer to "7 Artificial climate accelerated aging ~~~ fluorescent ultraviolet lamp" in "GB / T 18244~2022 Building waterproof material aging test method" to accelerate aging of the specimens, using cycle 1, with a cumulative irradiation energy of 5040KJ / (m 2 *nm), and then test the appearance and tensile retention rate of the specimens.

[0074] The tensile retention rate is tested with reference to “GB / T 328.8~2007 Test methods for building waterproof membranes Part 8: Tensile properties of bitumen waterproof membranes”, as shown in Table 3.

[0075] Tensile force retention rate = tensile force before specimen treatment / tensile force after specimen treatment * 100% Table 3 Combining Example 1 and Comparative Example 1 with Table 3, it can be seen that the waterproof roll prepared by the present invention has excellent waterproof performance and durability through the composite structure of the double-layer fabric reinforcement layer and the polymer waterproof sheet, as well as the optimization of the carcass processing steps. This innovative design has a wide range of application prospects in the field of construction and can be used for waterproofing projects such as roofs, basements, floors and walls of various buildings. The use of new waterproof rolls will improve the waterproof protection level of buildings, reduce the cost of maintenance and replacement, and extend the service life of buildings.

[0076] It can be seen from Example 1, Comparative Examples 1 to 5 and Table 3 that only by adopting the scheme of the present application and combining the steps can the maximum performance improvement effect be obtained, and the waterproof membrane prepared has excellent impermeability and waterproof durability.

[0077] Combining Example 1 and Example 2 with Table 3, it can be seen that the waterproof roll material prepared by using ECB as the material of the polymer waterproof sheet has better impermeability and waterproof durability.

[0078] Combining Example 1 and Examples 3 to 5 and Table 3, it can be seen that when the composite material of "polyester base fabric + polyethylene base fabric" is used as the fabric reinforcement layer, the fabric reinforcement layer can be combined with the polymer waterproof layer to achieve the greatest waterproof performance improvement effect.

[0079] Combining Example 1 and Example 7 with Table 3, it can be seen that when the carcass is pre-impregnated with modified asphalt, the water-impermeability and waterproof durability of the waterproof membrane are significantly improved. It can be seen from Example 7, Examples 14 to 20 and Table 3 that when an anti-UV additive is used in the modified asphalt, and when the three components in the anti-UV additive are compounded, the waterproof membrane's impermeability and waterproof durability are improved, especially the UV aging resistance, which has a significant improvement effect.

[0080] It can be seen from Examples 7, 10, 12, and 13 and Table 3 that when triple-UV-proof glue and polypropylene mesh fiber are added to the modified asphalt, and the two substances are added in combination, the UV aging resistance of the waterproof membrane is further improved, thereby improving the waterproof durability and impermeability of the waterproof membrane.

[0081] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A new type of modified asphalt waterproofing membrane with a long service life, characterized in that: Prepared by the following steps: (1) Mix a polymer waterproof sheet with two layers of fabric reinforcement, with the polymer waterproof sheet as the core layer to form a carcass; (2) Drying the tire body until it is dry; (3) Pre-impregnating the dried tire body with asphalt; (4) Covering with an anti-adhesive isolation layer to obtain a waterproof membrane.

2. A novel modified asphalt waterproofing membrane with a long service life according to claim 1, characterized in that: The polymer waterproof sheet is made of ethylene copolymer modified asphalt.

3. The novel modified asphalt waterproofing membrane with a long service life according to claim 1 is characterized in that: The fabric reinforcement layer is one or a composite of polyester base fabric, glass fiber base fabric or polyethylene base fabric.

4. A novel modified asphalt waterproofing membrane with a long service life according to claim 3, characterized in that: The fabric reinforcement layer is composited by polyester base fabric and polyethylene base fabric.

5. The novel modified asphalt waterproofing membrane with a long service life according to claim 1 is characterized in that: In the pre-impregnation asphalt treatment, modified asphalt is used, and the modified asphalt includes the following raw materials in parts by weight: 40-60 parts of No. 70 base asphalt; 6-9 parts of naphthenic oil; SBS modifier 4-7 parts; 18-22 parts of waste rubber powder; 6 to 12 parts of anti-ultraviolet additives, including zinc oxide, flaky aluminum oxide powder and benzotriazole ultraviolet absorber in a weight ratio of 1:1:

1.

6. A novel modified asphalt waterproofing membrane with a long service life according to claim 5, characterized in that: The modified asphalt also includes 6 to 8 parts by weight of triple-UV protection glue and 10 to 15 parts by weight of polypropylene mesh fibers.

7. The novel modified asphalt waterproofing membrane with a long service life according to claim 5 is characterized in that: The preparation method of the modified asphalt is as follows: fully heating No. 70 base asphalt at 130-150° C. to a molten state, adding cyclohexane oil for blending; adding SBS modifier and waste rubber powder, and high-speed shearing the mixture for 1.8-2.5 hours at a temperature of 140-160° C. until the SBS modifier and waste rubber powder are fully swollen and developed; finally, adding an anti-ultraviolet additive to the asphalt mixture, and then mechanically stirring it evenly to obtain the modified asphalt.

8. The novel modified asphalt waterproofing membrane with a long service life according to claim 6 is characterized in that: The preparation method of the modified asphalt is as follows: immersing polypropylene mesh fiber in triple-proof UV glue until the surface of the polypropylene mesh fiber is completely impregnated with the triple-proof UV glue and setting aside; fully heating No. 70 base asphalt at 130-150° C. to a molten state, adding cyclohexane oil for blending; adding SBS modifier and waste rubber powder, and shearing the mixture at high speed for 1.8-2.5 hours at a temperature of 140-160° C. until the SBS modifier and waste rubber powder are fully swollen and developed; finally, adding an anti-ultraviolet additive and polypropylene mesh fiber impregnated with triple-proof UV glue into the asphalt mixture, and then mechanically stirring it evenly to obtain the modified asphalt.