High-performance self-adhesive polymer modified asphalt waterproof coiled material as well as preparation method and application thereof

Abstract

The invention discloses a high-performance self-adhesive polymer modified asphalt waterproof coiled material as well as a preparation method and application thereof, and belongs to the technical field of waterproof coiled materials, the high-performance self-adhesive polymer modified asphalt waterproof coiled material comprises the following components in parts by weight: 40-85 parts of asphalt matrix, 5-15 parts of elastomer modifier and 2-10 parts of filler; the total weight part of the flame-retardant layer is 3-15, the phosphorus-nitrogen flame retardant accounts for 50-80 parts, and the inorganic flame-retardant filler accounts for 20-50 parts; the content of modified butyl rubber in the self-adhesive layer is 50-70 parts, the content of tackifying resin is 10-30 parts, and the content of a low-temperature-resistant auxiliary agent is 1-10 parts; according to the high-performance self-adhesive polymer modified asphalt waterproof coiled material provided by the invention, under the synergistic effect of the asphalt matrix, the SBS, the SEBS, the nano silicon dioxide, the superfine carbon black, the ammonium polyphosphate, the melamine, the aluminum hydroxide, the magnesium hydroxide, the modified butyl rubber and the tackifying resin, the high-performance self-adhesive polymer modified asphalt waterproof coiled material has a good waterproof effect; the effects of improving the adhesive property of the self-adhesive layer, ensuring the mechanical property and improving the aging resistance are jointly achieved, and the flame retardance meets the B2-level requirement.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof coiled materials, and particularly relates to a high-performance self-adhesive polymer modified bitumen waterproof coiled material, its preparation method and application. Background Art

[0002] The waterproof performance of buildings is crucial for their service life and safety. The main function of building waterproof materials is to prevent the intrusion of rainwater, groundwater, moisture, steam and corrosive liquids to ensure the long-term stability and durability of building structures. With the rapid development of the modern construction industry, waterproof materials not only need to have excellent waterproof performance, but also need to have various characteristics such as high temperature resistance, low temperature resistance, aging resistance, ultraviolet resistance and flame retardancy to meet the requirements of different environments and application scenarios.

[0003] Currently, the waterproof coiled materials on the market mainly include SBS modified bitumen waterproof coiled materials, self-adhesive waterproof coiled materials, polymer waterproof coiled materials, etc. Among them, SBS modified bitumen waterproof coiled materials are widely used in waterproof projects such as roofs, basements, tunnels, bridges, etc. due to their good flexibility, weather resistance and waterproof performance. However, the existing waterproof coiled materials still have the following problems: 1. Insufficient flame retardant performance Traditional waterproof coiled materials are mainly based on bitumen substrates. Bitumen is a flammable material and is easy to burn under high temperature or fire source, making it difficult to meet the building fire protection requirements.

[0004] In the prior art, although some coiled materials add inorganic fillers (such as aluminum hydroxide, magnesium hydroxide) to improve the flame retardant performance, due to the single flame retardant mechanism, the flame retardant effect is limited, and it will affect the mechanical properties and durability of the materials.

[0005] 2. The bonding performance of the self-adhesive layer is greatly affected by the environment Although the existing self-adhesive waterproof coiled materials have the advantage of convenient construction, their bonding performance is easily affected by temperature, humidity and the surface state of the substrate.

[0006] In a high temperature environment, the self-adhesive layer may flow, seep oil or lose its bonding force; while in a low temperature environment, problems such as brittle cracking and peeling may occur, affecting the waterproof effect.

[0007] 3. Insufficient mechanical properties and aging resistance Although traditional SBS modified bitumen coiled materials have certain flexibility and crack resistance, the aging resistance of SBS itself is limited. When exposed to ultraviolet rays and oxidation environments for a long time, it is easy to age and embrittle, affecting the service life.

[0008] 4. Insufficient filler modification of existing waterproof coiled materials At present, the commonly used fillers in waterproof coiled materials include barium sulfate, talcum powder, silicon dioxide, etc. However, these fillers are generally hydrophilic and oleophobic, have poor compatibility with the polymer matrix, and have poor dispersibility in asphalt. Due to the poor interfacial bonding ability of the fillers, the mechanical properties are reduced and the film quality is uneven, which in turn affects the waterproof performance and service life. Summary of the Invention

[0009] The object of the present invention is to provide a high-performance self-adhesive polymer modified asphalt waterproof coiled material, which solves the problems of insufficient flame retardant performance, the bonding performance of the self-adhesive layer being affected by the environment, insufficient mechanical properties and aging resistance, and insufficient filler modification in existing waterproof coiled materials.

[0010] In the first aspect, the present invention provides a high-performance self-adhesive polymer modified asphalt waterproof coiled material, including an upper surface layer, a polymer modified asphalt layer, a flame retardant layer, a self-adhesive layer and an anti-sticking isolation layer; The polymer modified asphalt layer includes an asphalt matrix, an elastomer modifier and a filler, wherein: The elastomer modifier is one or more of SBS, SEBS, and SIS; The filler is nano-inorganic filler, carbon black or talcum powder; The flame retardant layer is composed of a phosphorus-nitrogen based flame retardant and an inorganic flame retardant filler, wherein: The phosphorus-nitrogen based flame retardant includes ammonium polyphosphate, melamine or pentaerythritol; The inorganic flame retardant filler includes aluminum hydroxide, magnesium hydroxide or silicon dioxide; The self-adhesive layer is composed of modified butyl rubber, tackifying resin and low-temperature resistant additive; The upper surface layer is an anti-ultraviolet weather-resistant coating, fine sand, colored sand or polyethylene film; The anti-sticking isolation layer is a silicone oil-treated PET film or isolation sand.

[0011] A further technical solution is that in the polymer modified asphalt layer, the weight fraction of the asphalt matrix is 40-85 parts, the weight fraction of the elastomer modifier is 5-15 parts, and the weight fraction of the filler is 2-10 parts.

[0012] A further technical solution is that the total weight fraction of the flame retardant layer is 3-15 parts, wherein the phosphorus-nitrogen based flame retardant accounts for 50-80 parts and the inorganic flame retardant filler accounts for 20-50 parts.

[0013] A further technical solution is that the content of modified butyl rubber in the self-adhesive layer is 50-70 parts, the content of tackifying resin is 10-30 parts, and the content of low-temperature resistant additive is 1-10 parts.

[0014] A further technical solution is that the polymer modified asphalt layer is compound modified with SBS and SEBS, and nano-silica and ultrafine carbon black are added.

[0015] A further technical solution is that the self-adhesive layer is compounded with modified butyl rubber and tackifying resin, and nano-fillers are introduced.

[0016] In a second aspect, the present invention provides a method for preparing the above-mentioned high-performance self-adhesive polymer modified asphalt waterproof coiled material, comprising the following steps: Asphalt matrix modification: Stir the asphalt matrix at 180 - 200 °C, and gradually add SBS and SEBS elastomers to make them uniformly dispersed; Addition of fillers and flame retardant layer: At 150 - 170 °C, add nano-fillers and flame retardants, and continue stirring for 30 - 60 minutes; Forming and coating: Adopt the casting method or the coating method to coat the modified asphalt layer on the substrate, and sequentially cover the surface layer and the self-adhesive layer; Cooling and shaping: Cool to room temperature, attach the anti-sticking isolation layer, and prepare the waterproof coiled material.

[0017] A further technical solution is that the SBS and SEBS elastomers are added to the asphalt matrix in a mass ratio of 5 - 15 parts, and the stirring time is 30 - 90 minutes; The nano-fillers are one or more of nano-silica, nano-aluminum oxide or nano-calcium carbonate, and the flame retardant is a compound system of a phosphorus-nitrogen based flame retardant and an inorganic flame retardant filler, and their mass ratio is (50 - 80):(20 - 50).

[0018] A further technical solution is that in the forming and coating step, the thickness of the modified asphalt layer is controlled by a metering pump to reach 1.2 - 4.0 mm, and a multi-roll calendering device is used to make the surface of the modified asphalt layer uniform and flat; The cooling process includes two stages: In the first stage, it is quickly cooled to 50 - 80 °C by air cooling or water cooling, and in the second stage, it is placed at room temperature for 0.5 - 2 hours to ensure the stability of the internal structure of the material.

[0019] In a third aspect, the present invention provides the application of the modified asphalt obtained by the above preparation method in waterproof coiled materials.

[0020] Compared with the prior art, the beneficial effects of the present invention are: In the technical solution of the present invention, first, a flame-retardant layer is introduced into the waterproof coiled material. A phosphorus-nitrogen-based flame retardant (ammonium polyphosphate, melamine, pentaerythritol) is combined with an inorganic flame retardant filler (aluminum hydroxide, magnesium hydroxide, silicon dioxide) for composite design. The phosphorus-nitrogen-based flame retardant releases non-combustible gases when heated to form a flame-retardant barrier, and at the same time promotes the formation of a carbonized layer. Combining the characteristics of the inorganic flame retardant filler to absorb heat and reduce the material temperature, the fire safety is synergistically improved, and the problem of easy spread of the combustion of the asphalt coiled material is avoided.

[0021] Secondly, aiming at the problem that the adhesion performance of the self-adhesive layer is affected by the environment, the present invention optimizes the formula of the self-adhesive layer, and uses modified butyl rubber, tackifying resin and low-temperature resistant additives, so that it maintains stable adhesion in the range of -20°C to 70°C. Among them, the modified butyl rubber provides good low-temperature flexibility to prevent brittle cracking at low temperatures, the tackifying resin enhances the initial adhesion, and the low-temperature resistant additive ensures that the adhesion does not decrease due to temperature changes, thereby improving the construction stability and long-term waterproof effect. In addition, to enhance the mechanical properties and aging resistance, the present invention uses SBS and SEBS composite modification in the polymer-modified asphalt layer to improve the flexibility, tensile strength and fatigue resistance of the material. At the same time, nano-inorganic fillers (nano-silicon dioxide, ultrafine carbon black) are introduced to enhance the weather resistance and ultraviolet resistance, and prevent the asphalt coiled material from aging and cracking during long-term use.

[0022] Finally, through the application of surface-modified fillers (barium sulfate modified by silane coupling agent, activated silicon dioxide), the dispersibility and compatibility of the fillers in the asphalt are improved, and the problems of hydrophilic and oleophobic properties and poor interfacial bonding ability of traditional fillers are solved, ensuring the mechanical properties and durability of the waterproof coiled material. In summary, through multi-level optimization, the present invention has achieved improvements in multiple aspects such as enhanced flame retardancy, enhanced bonding stability, optimized mechanical and aging resistance, and improved filler dispersibility, thus enhancing the overall performance and application reliability of the self-adhesive polymer-modified asphalt waterproof coiled material. Detailed implementation mode

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0024] Example 1 A high-performance self-adhesive polymer-modified asphalt waterproof coiled material is composed of the following raw materials in parts by weight: 40 parts of asphalt matrix, 8 parts of SBS, 5 parts of SEBS, 3.5 parts of nano-silicon dioxide, 2.5 parts of ultrafine carbon black, 4.2 parts of ammonium polyphosphate, 1.8 parts of melamine, 2.5 parts of aluminum hydroxide, 1.5 parts of magnesium hydroxide, 50 parts of modified butyl rubber, 10 parts of tackifying resin, 3 parts of low-temperature resistant additive.

[0025] Heat the asphalt matrix to 180°C and stir to make it completely molten. Add SBS and SEBS in sequence and stir for 60 min under the condition of 200 r / min to uniformly disperse the elastomer. Subsequently, mix nano-silica, ultra-fine carbon black, ammonium polyphosphate, melamine, aluminum hydroxide, and magnesium hydroxide evenly and then add them, and continue to stir for 30 min. Finally, add modified butyl rubber, tackifying resin, and low-temperature resistant additives, and stir at 180°C for 40 min to obtain a modified asphalt mixture. Coating the obtained modified asphalt mixture onto the substrate by the casting method, covering the surface layer and the self-adhesive layer in sequence, and after cooling and compounding the anti-sticking isolation layer, a high-performance self-adhesive polymer modified asphalt waterproof coil is prepared.

[0026] Example 2 Adopt the same preparation process as in Example 1, and adjust the raw material ratio to: 45 parts of asphalt matrix, 9 parts of SBS, 5.5 parts of SEBS, 3.8 parts of nano-silica, 2.7 parts of ultra-fine carbon black, 4.5 parts of ammonium polyphosphate, 1.9 parts of melamine, 2.6 parts of aluminum hydroxide, 1.7 parts of magnesium hydroxide, 55 parts of modified butyl rubber, 15 parts of tackifying resin, and 4 parts of low-temperature resistant additives.

[0027] Example 3 Adopt the same preparation process as in Example 1, and adjust the raw material ratio to: 50 parts of asphalt matrix, 10 parts of SBS, 6 parts of SEBS, 4.0 parts of nano-silica, 3.0 parts of ultra-fine carbon black, 5.0 parts of ammonium polyphosphate, 2.0 parts of melamine, 3.0 parts of aluminum hydroxide, 2.0 parts of magnesium hydroxide, 60 parts of modified butyl rubber, 20 parts of tackifying resin, and 5 parts of low-temperature resistant additives.

[0028] Example 4 Adopt the same preparation process as in Example 1, and adjust the raw material ratio to: 55 parts of asphalt matrix, 11 parts of SBS, 6.5 parts of SEBS, 4.2 parts of nano-silica, 3.2 parts of ultra-fine carbon black, 5.3 parts of ammonium polyphosphate, 2.1 parts of melamine, 3.2 parts of aluminum hydroxide, 2.2 parts of magnesium hydroxide, 63 parts of modified butyl rubber, 22 parts of tackifying resin, and 6 parts of low-temperature resistant additives.

[0029] Example 5 Adopt the same preparation process as in Example 1, and adjust the raw material ratio to: 60 parts of asphalt matrix, 12 parts of SBS, 7 parts of SEBS, 4.5 parts of nano-silica, 3.5 parts of ultra-fine carbon black, 5.8 parts of ammonium polyphosphate, 2.2 parts of melamine, 3.5 parts of aluminum hydroxide, 2.5 parts of magnesium hydroxide, 65 parts of modified butyl rubber, 25 parts of tackifying resin, and 7 parts of low-temperature resistant additives.

[0030] Example 6 The same preparation process as in Example 1 is adopted, and the raw material ratio is adjusted to: 65 parts of asphalt matrix, 13 parts of SBS, 7.5 parts of SEBS, 4.7 parts of nano-silica, 3.7 parts of ultra-fine carbon black, 6.0 parts of ammonium polyphosphate, 2.3 parts of melamine, 3.7 parts of aluminum hydroxide, 2.7 parts of magnesium hydroxide, 68 parts of modified butyl rubber, 27 parts of tackifying resin, and 8 parts of low-temperature resistant additive.

[0031] Example 7 The same preparation process as in Example 1 is adopted, and the raw material ratio is adjusted to: 75 parts of asphalt matrix, 14 parts of SBS, 8 parts of SEBS, 5.0 parts of nano-silica, 4.0 parts of ultra-fine carbon black, 6.5 parts of ammonium polyphosphate, 2.4 parts of melamine, 4.0 parts of aluminum hydroxide, 3.0 parts of magnesium hydroxide, 70 parts of modified butyl rubber, 28 parts of tackifying resin, and 9 parts of low-temperature resistant additive.

[0032] Example 8 The same preparation process as in Example 1 is adopted, and the raw material ratio is adjusted to: 85 parts of asphalt matrix, 15 parts of SBS, 8.5 parts of SEBS, 5.2 parts of nano-silica, 4.2 parts of ultra-fine carbon black, 7.0 parts of ammonium polyphosphate, 2.5 parts of melamine, 4.2 parts of aluminum hydroxide, 3.2 parts of magnesium hydroxide, 72 parts of modified butyl rubber, 30 parts of tackifying resin, and 10 parts of low-temperature resistant additive.

[0033] Comparative Example 1 The same preparation process as in Example 1 is adopted, but SEBS is not used and 5 parts of SIS are used instead. At the same time, the content of the flame retardant is reduced. Raw material ratio: 40 parts of asphalt matrix, 8 parts of SBS, 5 parts of SIS, 1.5 parts of nano-silica, 0.5 part of ultra-fine carbon black, 2.5 parts of ammonium polyphosphate, 0.5 part of melamine, 1.0 part of aluminum hydroxide, 1.0 part of magnesium hydroxide, 40 parts of modified butyl rubber, 10 parts of tackifying resin, and 1 part of low-temperature resistant additive.

[0034] Comparative Example 2 The same preparation process as in Comparative Example 1 is adopted, and the raw material ratio is adjusted to: 45 parts of asphalt matrix, 9 parts of SBS, 5.5 parts of SIS, 1.5 parts of nano-silica, 0.5 part of ultra-fine carbon black, 2.5 parts of ammonium polyphosphate, 0.5 part of melamine, 1.0 part of aluminum hydroxide, 1.0 part of magnesium hydroxide, 42 parts of modified butyl rubber, 10 parts of tackifying resin, and 2 parts of low-temperature resistant additive.

[0035] Comparative Example 3 Using the same preparation process as in Comparative Example 1, the raw material ratio is adjusted to: 50 parts of asphalt matrix, 10 parts of SBS, 6 parts of SIS, 1.5 parts of nano-silica, 0.5 part of ultra-fine carbon black, 2.5 parts of ammonium polyphosphate, 0.5 part of melamine, 1.0 part of aluminum hydroxide, 1.0 part of magnesium hydroxide, 45 parts of modified butyl rubber, 10 parts of tackifying resin, and 3 parts of low-temperature resistance aid.

[0036] Comparative Example 4 Using the same preparation process as in Comparative Example 1, the raw material ratio is adjusted to: 55 parts of asphalt matrix, 11 parts of SBS, 6.5 parts of SIS, 1.5 parts of nano-silica, 0.5 part of ultra-fine carbon black, 2.5 parts of ammonium polyphosphate, 0.5 part of melamine, 1.0 part of aluminum hydroxide, 1.0 part of magnesium hydroxide, 47 parts of modified butyl rubber, 10 parts of tackifying resin, and 3 parts of low-temperature resistance aid.

[0037] Comparative Example 5 Using the same preparation process as in Comparative Example 1, the raw material ratio is adjusted to: 60 parts of asphalt matrix, 12 parts of SBS, 7 parts of SIS, 1.5 parts of nano-silica, 0.5 part of ultra-fine carbon black, 2.5 parts of ammonium polyphosphate, 0.5 part of melamine, 1.0 part of aluminum hydroxide, 1.0 part of magnesium hydroxide, 50 parts of modified butyl rubber, 10 parts of tackifying resin, and 3 parts of low-temperature resistance aid.

[0038] Comparative Example 6 Using the same preparation process as in Comparative Example 1, the raw material ratio is adjusted to: 65 parts of asphalt matrix, 13 parts of SBS, 7.5 parts of SIS, 1.5 parts of nano-silica, 0.5 part of ultra-fine carbon black, 2.5 parts of ammonium polyphosphate, 0.5 part of melamine, 1.0 part of aluminum hydroxide, 1.0 part of magnesium hydroxide, 52 parts of modified butyl rubber, 10 parts of tackifying resin, and 3 parts of low-temperature resistance aid.

[0039] The following table shows the raw material ratio of Examples 1-8 and Comparative Examples 1-6: Test Results The samples prepared in the examples and comparative examples were tested according to GB / T4507-2014, GB / T328.14-2007, GB / T328.8-2007, GB / T529-2008, GB / T328.11-2007, and GB / T2406-2008.

[0040] The following table shows the performance test results of the high-performance self-adhesive polymer modified asphalt waterproofing membrane samples prepared in Examples 1-8 and Comparative Examples 1-6: The high-performance self-adhesive polymer modified bitumen waterproofing membrane of the present invention has been improved in multiple aspects such as flame retardant layer design, self-adhesive layer optimization, polymer modification, and filler modification, achieving enhanced flame retardancy, improved bonding stability, optimized mechanical and aging resistance properties, and better filler dispersion, thus enhancing the overall performance and application reliability of the product.

[0041] According to the performance data of Examples 1 - 8 and Comparative Examples 1 - 6: 1. Flame retardant performance The flame retardant layer adopts a composite design of phosphorus-nitrogen based flame retardants (ammonium polyphosphate, melamine, pentaerythritol) and inorganic flame retardant fillers (aluminum hydroxide, magnesium hydroxide, silicon dioxide), and the synergistic effect improves the flame retardant effect: The phosphorus-nitrogen based flame retardants release non-combustible gases when heated, forming a flame retardant barrier, and at the same time promoting the formation of a carbonized layer to reduce the release of combustibles.

[0042] The inorganic flame retardant fillers further inhibit the spread of combustion and enhance the fire resistance performance by absorbing heat and reducing the material temperature.

[0043] The LOI (Limiting Oxygen Index) of Examples 1 - 8 is all ≥26%, meeting the requirements of flame retardant B2 level, indicating that the design of the flame retardant layer is effective.

[0044] The LOI of Comparative Examples 1 - 6 is lower than 26% and cannot reach B2 level. The main reason is that the content of flame retardants is low or the high-efficiency phosphorus-nitrogen based flame retardant system is not used, resulting in an increased risk of combustion spread.

[0045] 2. Bonding performance of the self-adhesive layer The present invention optimizes the formula of the self-adhesive layer to provide stable adhesion within the range of -20°C to 70°C: The modified butyl rubber endows the material with good low-temperature flexibility and prevents low-temperature embrittlement.

[0046] The tackifying resin improves the initial adhesion and enhances the bonding ability with cement and substrates.

[0047] The low-temperature resistant additive ensures that the bonding performance is not affected by temperature changes and improves the construction stability.

[0048] The cement peel strength of Examples 1 - 8 meets the standard, ensuring long-term bonding stability.

[0049] The peel strength of Comparative Examples 4 - 6 decreases by more than 20%, and the cement bonding is unqualified. The main reason is that the content of modified butyl rubber and tackifying resin is insufficient, resulting in a decrease in adhesion and easy cracking or peeling after construction.

[0050] 3. Mechanical properties and aging resistance The polymer modified bitumen layer adopts SBS + SEBS composite modification to improve the flexibility, tensile strength and fatigue resistance of the material SBS provides high elasticity and flexibility, enhancing weather resistance.

[0051] SEBS confers better aging resistance performance and increases the tensile strength.

[0052] Nanoscale inorganic fillers (nanoscale silica, ultrafine carbon black) enhance aging resistance and UV resistance, preventing asphalt from aging and cracking during long-term use.

[0053] The tensile strength of Examples 1 - 8 is all ≥1 MPa, meeting the standard, and the elongation at break is far higher than 30%, indicating excellent flexibility and durability.

[0054] The tensile strength of Comparative Examples 1 - 3 is lower than 1 MPa, and the elongation at break is only 120% - 210%, making it difficult to meet the actual application requirements. This is mainly because SBS + SEBS composite modification is not used, resulting in insufficient flexibility and easy fracture.

[0055] 4. Filler Dispersibility and Interfacial Bonding Surface - modified fillers (barium sulfate modified with silane coupling agent, active silica) are used to improve the dispersibility and compatibility of fillers in asphalt and to improve interfacial bonding: Silane coupling agent enhances the bonding between inorganic fillers and asphalt matrix, improving mechanical properties and durability.

[0056] Active silica improves the filler distribution, enhances the stability of the flame - retardant layer, and prevents performance degradation due to moisture absorption.

[0057] The right - angle tear strength of Examples 1 - 8 is ≥25 N / mm, all meeting the standard, indicating good filler dispersibility and no brittle cracking.

[0058] The right - angle tear strength of Comparative Examples 1 - 3 is only 14 - 20 N / mm, indicating poor compatibility between fillers and asphalt and insufficient interfacial bonding force, resulting in a decrease in tear performance.

[0059] Although the present invention has been described with reference to multiple illustrative embodiments of the present invention, it should be understood that those skilled in the art can design many other modifications and implementation manners, which will fall within the scope of the principles and spirit disclosed in this application. More specifically, within the scope of the disclosure and claims of this application, various variations and improvements can be made to the components and / or layout of the subject combination layout. In addition to the variations and improvements made to the components and / or layout, other uses will also be obvious to those skilled in the art.

Claims

1. A high-performance self-adhesive polymer modified bitumen waterproofing membrane, characterized in that, It includes an upper surface layer, a polymer-modified asphalt layer, a flame-retardant layer, a self-adhesive layer and an anti-sticking isolation layer; The polymer-modified asphalt layer includes an asphalt matrix, an elastomer modifier and a filler, where: The elastomer modifier is one or more of SBS, SEBS, and SIS; The filler is a nano-inorganic filler, carbon black or talcum powder; The flame-retardant layer is composed of a phosphorus-nitrogen-based flame retardant and an inorganic flame-retardant filler, where: The phosphorus-nitrogen-based flame retardant includes ammonium polyphosphate, melamine or pentaerythritol; The inorganic flame-retardant filler includes aluminum hydroxide, magnesium hydroxide or silicon dioxide; The self-adhesive layer is composed of modified butyl rubber, tackifying resin and low-temperature resistant additives; The upper surface layer is an anti-ultraviolet weather-resistant coating, fine sand, colored sand or a polyethylene film; The anti-sticking isolation layer is a silicone oil-treated PET film or isolation sand.

2. The waterproof coiled material according to claim 1, characterized in that, In the polymer-modified asphalt layer, the weight fraction of the asphalt matrix is 40 - 85 parts, the weight fraction of the elastomer modifier is 5 - 15 parts, and the weight fraction of the filler is 2 - 10 parts.

3. The waterproof coiled material according to claim 1, wherein, The total weight fraction of the flame-retardant layer is 3 - 15 parts, where the phosphorus-nitrogen-based flame retardant accounts for 50 - 80 parts and the inorganic flame-retardant filler accounts for 20 - 50 parts.

4. The waterproof coiled material according to claim 1, wherein The content of the modified butyl rubber in the self-adhesive layer is 50 - 70 parts, the content of the tackifying resin is 10 - 30 parts, and the content of the low-temperature resistant additive is 1 - 10 parts.

5. The waterproof coiled material according to claim 1, characterized in that, The polymer-modified asphalt layer is compound-modified with SBS and SEBS, and nano-silica and ultra-fine carbon black are added.

6. The waterproof coiled material according to claim 1, characterized in that, The self-adhesive layer is compounded with modified butyl rubber and tackifying resin, and nano-fillers are introduced.

7. A preparation method of a high-performance self-adhesive polymer modified asphalt waterproofing membrane, characterized in that, It includes the following steps: Asphalt Matrix modification: Stir the asphalt matrix at 180 - 200 °C, and gradually add SBS and SEBS elastomers to make them evenly dispersed; Addition of filler and flame-retardant layer: At 150 - 170 °C, add nano-fillers and flame retardants, and continue stirring for 30 - 60 minutes; Forming and coating: Using the casting method or coating method, coat the modified asphalt layer on the substrate, and sequentially cover the upper surface layer and the self-adhesive layer; Cooling and shaping: Cool to room temperature, attach the anti-sticking isolation layer, and prepare the waterproof coiled material.

8. According to the preparation method described in claim 7, characterized in that, The SBS and SEBS elastomers are added to the asphalt matrix in a mass ratio of 5 - 15 parts, and the stirring time is 30 - 90 minutes; The nano-fillers are one or more of nano-silica, nano-aluminum oxide or nano-calcium carbonate, and the flame retardant is a compound system of a phosphorus-nitrogen-based flame retardant and an inorganic flame-retardant filler, and their mass ratio is (50 - 80):(20 - 50).

9. According to the preparation method described in claim 7, characterized in that, In the forming and coating step, the thickness of the modified asphalt layer is controlled by a metering pump to reach 1.2 - 4.0 mm, and a multi-roll calendering device is used to make the surface of the modified asphalt layer uniform and flat; The cooling process includes two stages: In the first stage, it is quickly cooled to 50 - 80 °C by air cooling or water cooling, and in the second stage, it is placed at room temperature for 0.5 - 2 hours to ensure the stability of the internal structure of the material.

10. Application of the waterproof coiled material obtained by the preparation method according to claim 7 in building waterproofing projects.

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