Self-adhesive waterproof coiled material and preparation method thereof

Abstract

The invention relates to the technical field of waterproof coiled materials, in particular to a self-adhesive waterproof coiled material and a preparation method thereof. The waterproof roll comprises a polyethylene film, a main body layer, a self-adhesive layer and an isolating film from top to bottom, wherein the main body layer is obtained by extruding, granulating and melting matrix asphalt, butyl rubber, modified vermiculite, a borate compound, an antioxidant and sulfur, dip-coating gridding cloth on two sides, and calendaring and shaping; and the self-adhesive layer is obtained by melting and curing SEBS, hydrogenated petroleum resin, polyisobutene, modified vermiculite, a borate compound, a plasticizer and an antioxidant. Compared with the prior art, the prepared self-adhesive waterproof coiled material has better resistance to damp-heat aging and salt erosion, and is especially suitable for coastal, underground, high-humidity and other severe environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waterproofing membrane, in particular to a self-adhesive waterproofing membrane and a preparation method thereof. BACKGROUND

[0002] Waterproofing membrane is a flexible building waterproofing material that can be rolled up. The core is made by impregnating the matrix with asphalt or high polymer waterproof coating, which can effectively resist rainwater and groundwater leakage, and is the first key barrier for engineering waterproofing. According to the core material, it is mainly divided into three categories: traditional asphalt waterproofing membrane is low in price, although it is still used, but the low-temperature flexibility and durability are weak; high polymer modified asphalt waterproofing membrane improves the strength, elongation and aging resistance through polymer modification, the price is moderate and the construction is mature, which is suitable for most industrial and civil building roofs, underground engineering, among which SBS membrane is suitable for cold regions due to its low-temperature resistance, and APP membrane is suitable for hot environments due to its high-temperature resistance; synthetic polymer waterproofing membrane takes rubber and resin as base material, has the advantages of single-layer waterproofing, cold construction, light weight, small pollution, etc., and has strong adaptability to base deformation, which is the current mainstream development direction. This kind of material can adapt to different climate conditions and base deformation due to its excellent water resistance, temperature stability, flexibility and mechanical strength, and is widely used in building walls, roofs, tunnels, highways, landfill sites and other fields.

[0003] Self-adhesive waterproofing membrane is a flexible waterproofing material that uses modified asphalt, high polymer resin, etc. as base material, is matched with polyester felt, glass fiber reinforced film or polyethylene film, etc. as matrix, and is compounded with self-adhesive layer and release film on the surface. The core advantage is that through the physical adsorption and chemical bonding of the self-adhesive layer, it can be closely attached to the base and the lap joint edge, without relying on open flame baking or additional coating of adhesive, which belongs to the environmentally friendly cold construction waterproofing material.

[0004] CN113462306A focuses on the technical field of waterproofing membrane, and discloses a self-adhesive polymer waterproofing membrane and a preparation process thereof. The self-adhesive polymer waterproofing membrane adopts a layered composite structure, which is composed of a surface layer, an upper base layer, a matrix layer, a lower base layer and a release film in sequence. The raw material composition and weight ratio of the upper base layer and the lower base layer are consistent, specifically including asphalt 38% to 50%, softening oil 7% to 12%, SIS 4% to 6%, SBS 1% to 3%, rubber powder 9% to 15% and talcum powder 20% to 35%. The preparation process is as follows: first, prepare the mixed material for forming the upper base layer and the lower base layer; then coat the mixed material on both sides of the matrix layer respectively, and form the upper base layer and the lower base layer after pressing treatment; finally, composite the surface layer on the side of the upper base layer away from the matrix layer, and cover the release film on the side of the lower base layer away from the matrix layer, and obtain the finished waterproofing membrane through the secondary pressing process. The core advantage of this technical solution is that it significantly improves the stability of the adhesion of the waterproofing membrane, thereby effectively prolonging the storage period of the product.

[0005] CN119350994A discloses a graphene modified exposed type composite self-adhesive modified asphalt waterproof coiled material, which adopts a composite structure design and is mainly composed of a graphene modified heat insulation coating and a self-adhesive modified asphalt waterproof coiled material. The layered structure of the self-adhesive modified asphalt waterproof coiled material comprises, in sequence, a first high-temperature resistant modified asphalt layer, a first matrix layer, a first self-adhesive modified asphalt layer, a second matrix layer, a second self-adhesive modified asphalt layer, a second high-temperature resistant modified asphalt layer, and a release film layer, and the graphene modified heat insulation coating is compounded on the outer surface of the first high-temperature resistant modified asphalt layer. The technology fully utilizes the excellent aging resistance and corrosion resistance of graphene in the graphene modified heat insulation waterproof coating, combines the high-efficiency heat insulation performance of titanium dioxide and white carbon black, and cooperates with the excellent adhesion and high-temperature resistance of the self-adhesive modified asphalt waterproof coiled material, thereby successfully solving the technical problems of damage of the surface release layer, degradation of the coiled material body, failure of the waterproof system, and water leakage in the long-term exposure environment of the traditional exposed type waterproof coiled material.

[0006] The self-adhesive waterproof coiled material has been widely used in various building waterproof projects due to its excellent high and low temperature adaptability. However, in actual use, the material is prone to aging and cracking under the combined action of heat and oxygen, resulting in loss of waterproof function. Especially in the special environment of coastal areas, the combined action of high humidity and heat and high salt medium not only further accelerates the thermal aging process of the waterproof coiled material, but also causes salt erosion damage to the material, and the two factors together greatly shorten the service life of the waterproof coiled material used in coastal areas. Therefore, developing a technical solution capable of improving the moisture and heat aging resistance and salt erosion resistance of the polymer modified asphalt waterproof coiled material has important engineering value and practical significance for prolonging the service life of the material in coastal areas and ensuring the long-term reliability of the waterproof project. SUMMARY

[0007] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present application is to provide a self-adhesive waterproof coiled material and a preparation method thereof.

[0008] In order to improve the heat resistance and corrosion resistance of the waterproof coiled material, the present application utilizes the natural nanorod cluster and sheet structure of vermiculite to form a labyrinth effect after dispersion in the polymer matrix, thereby physically prolonging the penetration path of corrosion media such as water vapor, oxygen and salt ions. As a nanofiller, vermiculite can also improve the mechanical strength, modulus and dimensional thermal stability of the material. However, due to the poor compatibility of inorganic materials with asphalt, it is difficult to uniformly and stably disperse them. The present application modifies the surface of vermiculite from hydrophilic to oleophilic through organic modification, which has excellent compatibility with organic phases such as asphalt, rubber and resin, ensuring uniform dispersion and avoiding agglomeration.

[0009] The application also realizes self-repairing, healing micro-cracks through borate ester complex, thereby prolonging service life, and the dynamic reversible characteristics of borate ester bond enable it to recombine after breaking under heat and stress. In addition, the boron / hydroxyl of the borate ester complex can interact with the surface of inorganic substances, significantly enhancing the interfacial adhesion between components and preventing phase separation. Through the combined action of modified vermiculite and borate ester complex, the prepared self-adhesive waterproof roll material has better resistance to heat and humidity aging and salt erosion, and is particularly suitable for harsh environments such as coastal areas, underground and high humidity.

[0010] To achieve the above-mentioned purpose, the application provides a self-adhesive waterproof roll material, which comprises, from top to bottom, a polyethylene film, a main body layer, a self-adhesive layer and a release film; wherein the main body layer is obtained by extruding, granulating, melting and double-coating the grid cloth with a base asphalt, butyl rubber, modified vermiculite, borate ester complex, antioxidant and sulfur after melting, and then pressing and shaping; and the self-adhesive layer is obtained by melting and curing SEBS, hydrogenated petroleum resin, polyisobutylene, modified vermiculite, borate ester complex and plasticizer and antioxidant.

[0011] The preparation method of the modified vermiculite comprises the following steps: The vermiculite is beaten with water, the pH is adjusted by adding acid, and then double-octadecyl dimethyl ammonium chloride is added after heating, and the mixture is stirred for 1-3 h, filtered, washed, dried and crushed to obtain the modified vermiculite.

[0012] Further, the pH is adjusted to a range of 4-4.5.

[0013] Further, the heating is performed at a temperature of 80-85℃.

[0014] Further, the mass ratio of the vermiculite to the double-octadecyl dimethyl ammonium chloride is 1:0.2-0.3.

[0015] The preparation method of the borate ester complex comprises the following steps: The borate monomer is mixed with epoxy soybean oil, heated, and then a catalyst is added for further heating and stirring for 3-4 h, and the borate ester complex is obtained after post-treatment.

[0016] Further, the mass ratio of the borate monomer to the epoxy soybean oil is 1:1-2.

[0017] Further, the heating is performed at a temperature of 80-90℃.

[0018] Further, the further heating is performed at a temperature of 120-130℃.

[0019] Further, the borate monomer is one of n-octyl boronic acid, cyclohexyl boronic acid, n-dodecyl boronic acid or phenyl boronic acid.

[0020] A preparation method of a self-adhesive waterproof roll material, comprising the following steps, in parts by weight: S1, extruding and granulating 80-120 parts of base pitch, 10-20 parts of butyl rubber, 5-15 parts of modified vermiculite, 4-8 parts of borate compound, 0.1-2 parts of antioxidant and 0.1-0.5 parts of sulfur, and then melting, double-sided dip-coating, calendering and shaping with a mesh cloth to obtain a main layer; melting and curing 80-120 parts of SEBS, 50-80 parts of hydrogenated petroleum resin, 20-40 parts of polyisobutylene, 1-5 parts of modified vermiculite, 1-5 parts of borate compound, 20-30 parts of plasticizer and 1-2 parts of antioxidant to obtain a self-adhesive glue; S2, coating the self-adhesive glue on the lower surface of the main layer through a preheating roller, covering an isolation film and compacting; S3, coating hot melt adhesive on the upper surface of the main layer, covering a polyethylene film, and then water cooling, cutting, rolling and packaging to obtain the self-adhesive waterproof roll material.

[0021] The beneficial effects of the present application are as follows: 1. Compared with the prior art, the present application utilizes the natural nanorod cluster and lamellar structure of vermiculite to physically extend the penetration path of corrosion media such as water vapor, oxygen and salt ions. Through organic modification, the surface of the vermiculite changes from hydrophilic to oleophilic, which is excellent in compatibility with organic phases such as pitch, rubber and resin, ensuring uniform dispersion and avoiding agglomeration.

[0022] 2. The present application realizes self-repairing through the borate compound to heal small cracks, thereby prolonging the service life. In addition, the boron / hydroxyl of the borate compound can interact with the surface of inorganic substances, significantly enhancing the interfacial adhesion between components and preventing phase separation. Through the combined action of modified vermiculite and borate compound, the prepared self-adhesive waterproof roll material has better resistance to wet heat aging and salt erosion, and is particularly suitable for harsh environments such as coastal areas, underground and high humidity. DETAILED DESCRIPTION

[0023] The base pitch is of type 90# and from Hebei Xiangbei New Material Technology Co., Ltd.

[0024] The butyl rubber is of type 1066 and from Exxon, USA.

[0025] The SEBS is of type YH-503 and from Balin Petrochemical.

[0026] The hydrogenated petroleum resin is of type QM-100A and from Shenzhen Yingqun Chemical Co., Ltd.

[0027] The polyisobutylene has a molecular weight of about 1300.

[0028] The mesh cloth is a warp-knitted polyester mesh cloth with a grammage of ≥180 g / m² and a mesh size of 2 mm×2 mm.

[0029] Hot melt glue, model: supra 191, from Henkel.

[0030] Polyethylene film, thickness 1.5mm, gram weight 1425g / m 2 .

[0031] The release film is a silicone oil PET release film, thickness 50μm. Example 1

[0032] A preparation method of a self-adhesive waterproof roll material, comprising the following steps, in parts by weight: S1, melt the extruded and granulated 100 parts of base asphalt, 15 parts of butyl rubber, 10 parts of modified vermiculite, 6 parts of borate ester compound, 0.5 parts of antioxidant 1010, 0.5 parts of antioxidant 168 and 0.3 parts of sulfur, double-sidedly dip-coat on the mesh cloth with a coating thickness of 1mm, and then calender to shape to obtain a main body layer; melt and cure 100 parts of SEBS, 70 parts of hydrogenated petroleum resin, 30 parts of polyisobutylene, 4 parts of modified vermiculite, 4 parts of borate ester compound, 25 parts of diisononyl phthalate, and 1 part of antioxidant 1010 to obtain a self-adhesive glue; S2, coat the self-adhesive glue on the lower surface of the main body layer through a preheating roller, cover the release film, and compact; S3, coat the hot melt glue on the upper surface of the main body layer, cover the polyethylene film, and then after pressing, water cooling, cutting, winding and packaging, the self-adhesive waterproof roll material is obtained.

[0033] The preparation method of the modified vermiculite comprises the following steps, in parts by weight: Add 5 times water to 10 parts of vermiculite to pulp, adjust the pH to 4.5 by adding acid, heat to 80℃, then add 2.5 parts of didodecyldimethylammonium chloride, stir for 2h, then filter, wash, dry, and crush to obtain the modified vermiculite.

[0034] The preparation method of the borate ester compound comprises the following steps: Mix 10 parts of n-octyl borate with 15 parts of epoxy soybean oil, heat to 90℃, then add 0.2 parts of dibutyl tin dilaurate, continue to heat to 125℃, stir for 3.5h, concentrate and remove, and then discharge to obtain the borate ester compound. Example 2

[0035] A preparation method of a self-adhesive waterproof roll material, comprising the following steps, in parts by weight: S1, melt and fuse the extruded and granulated matrix asphalt 100 parts, butyl rubber 15 parts, modified vermiculite 10 parts, borate ester complex 6 parts, antioxidant 1010 0.5 parts, antioxidant 168 0.5 parts and sulfur 0.3 parts, double-sided dip coating on the mesh cloth, coating thickness 1mm, calendering and shaping to obtain the main layer; melt and fuse SEBS 100 parts, hydrogenated petroleum resin 70 parts, polyisobutylene 30 parts, modified vermiculite 4 parts, borate ester complex 4 parts, and diisononyl phthalate 25 parts, antioxidant 1010 1 part to obtain the self-adhesive glue; S2, coat the main layer with self-adhesive glue on the lower surface through the preheating roller, cover the release film, and compact; S3, coat hot melt adhesive on the upper surface of the main layer, cover polyethylene film, and then go through water cooling, cutting, winding, and packaging after pressing.

[0036] The preparation method of the modified vermiculite comprises the following steps, in terms of weight parts: Add 5 times water to 10 parts of vermiculite to make pulp, adjust the pH to 4.5 with acid, heat to 80℃, then add 2.5 parts of didodecyldimethylammonium chloride, stir for 2h, then filter, wash, dry, and crush to obtain the modified vermiculite.

[0037] The preparation method of the borate ester complex comprises the following steps: Mix 10 parts of cyclohexyl borate with 15 parts of epoxy soybean oil, heat to 90℃, then add 0.2 parts of dibutyl tin dilaurate, continue to heat to 125℃, stir for 3.5h, concentrate and remove, and discharge to obtain the borate ester complex. Example 3

[0038] A preparation method of a self-adhesive waterproof coiled material, comprising the following steps, in terms of weight parts: S1, melt and fuse the extruded and granulated matrix asphalt 100 parts, butyl rubber 15 parts, modified vermiculite 10 parts, borate ester complex 6 parts, antioxidant 1010 0.5 parts, antioxidant 168 0.5 parts and sulfur 0.3 parts, double-sided dip coating on the mesh cloth, coating thickness 1mm, calendering and shaping to obtain the main layer; melt and fuse SEBS 100 parts, hydrogenated petroleum resin 70 parts, polyisobutylene 30 parts, modified vermiculite 4 parts, borate ester complex 4 parts, and diisononyl phthalate 25 parts, antioxidant 1010 1 part to obtain the self-adhesive glue; S2, coat the main layer with self-adhesive glue on the lower surface through the preheating roller, cover the release film, and compact; S3, coat hot melt adhesive on the upper surface of the main layer, cover polyethylene film, and then go through water cooling, cutting, winding, and packaging after pressing.

[0039] The preparation method of the modified vermiculite comprises the following steps, in terms of weight parts: Mix vermiculite 10 parts with 5 times water, add acid to adjust pH to 4.5, heat to 80℃, then add didodecyldimethylammonium chloride 2.5 parts, stir for 2h, then filter, wash, dry, crush to obtain modified vermiculite.

[0040] The preparation method of the borate complex comprises the following steps: Mix n-dodecylboronic acid 10 parts with epoxy soybean oil 15 parts, heat to 90℃, then add dibutyltin dilaurate 0.2 parts, continue to heat to 125℃, stir for 3.5h, concentrate and remove, discharge to obtain the borate complex. Example 4

[0041] A preparation method of a self-adhesive waterproof roll material, comprising the following steps, in parts by weight: S1, melt and extrude granulation of base asphalt 100 parts, butyl rubber 15 parts, modified vermiculite 10 parts, borate complex 6 parts, antioxidant 1010 0.5 parts, antioxidant 168 0.5 parts and sulfur 0.3 parts, then double-sidedly coat on the grid cloth with a coating thickness of 1mm, and then calender and shape to obtain a main layer; melt and cure SEBS 100 parts, hydrogenated petroleum resin 70 parts, polyisobutylene 30 parts, modified vermiculite 4 parts, borate complex 4 parts, diisononyl phthalate 25 parts and antioxidant 1010 1 part to obtain a self-adhesive glue; S2, coat the self-adhesive glue on the lower surface of the main layer through a preheating roller, cover an isolation film, and compact; S3, coat hot melt adhesive on the upper surface of the main layer, cover a polyethylene film, then press together, and then water cool, cut, roll up, and package to obtain the self-adhesive waterproof roll material.

[0042] The preparation method of the modified vermiculite comprises the following steps, in parts by weight: Mix vermiculite 10 parts with 5 times water, add acid to adjust pH to 4.5, heat to 80℃, then add didodecyldimethylammonium chloride 2.5 parts, stir for 2h, then filter, wash, dry, crush to obtain modified vermiculite.

[0043] The preparation method of the borate complex comprises the following steps: Mix phenylboronic acid 10 parts with epoxy soybean oil 15 parts, heat to 90℃, then add dibutyltin dilaurate 0.2 parts, continue to heat to 125℃, stir for 3.5h, concentrate and remove, discharge to obtain the borate complex. Comparative Example 1

[0044] A preparation method of a self-adhesive waterproof roll material, comprising the following steps, in parts by weight: S1, melt and extrusion granulation of 100 parts of base pitch, 15 parts of butyl rubber, 10 parts of modified vermiculite, 0.5 parts of antioxidant 1010, 0.5 parts of antioxidant 168 and 0.3 parts of sulfur, double-sided dip coating on the mesh cloth with a coating thickness of 1mm, calendering and shaping to obtain a main layer; melt and aging of 100 parts of SEBS, 70 parts of hydrogenated petroleum resin, 30 parts of polyisobutylene, 4 parts of modified vermiculite, 25 parts of diisononyl phthalate, 1 part of antioxidant 1010 to obtain a self-adhesive glue; S2, coating the self-adhesive glue on the lower surface of the main layer through a preheating roller, covering the release film and compacting; S3, coating the hot melt adhesive on the upper surface of the main layer, covering the polyethylene film, and then water cooling, cutting, rolling, packaging to obtain the self-adhesive waterproof roll material.

[0045] The preparation method of the modified vermiculite comprises the following steps, in terms of weight parts: Add 5 times water to 10 parts of vermiculite to make pulp, adjust the pH to 4.5 with acid, heat to 80℃, then add 2.5 parts of distearyl dimethyl ammonium chloride, stir for 2h, filter, wash, dry, crush to obtain the modified vermiculite. Comparative Example 2

[0046] A preparation method of a self-adhesive waterproof roll material, comprising the following steps, in terms of weight parts: S1, melt and extrusion granulation of 100 parts of base pitch, 15 parts of butyl rubber, 10 parts of modified vermiculite, 0.5 parts of antioxidant 1010, 0.5 parts of antioxidant 168 and 0.3 parts of sulfur, double-sided dip coating on the mesh cloth with a coating thickness of 1mm, calendering and shaping to obtain a main layer; melt and aging of 100 parts of SEBS, 70 parts of hydrogenated petroleum resin, 30 parts of polyisobutylene, 4 parts of modified vermiculite, 25 parts of diisononyl phthalate, 1 part of antioxidant 1010 to obtain a self-adhesive glue; S2, coating the self-adhesive glue on the lower surface of the main layer through a preheating roller, covering the release film and compacting; S3, coating the hot melt adhesive on the upper surface of the main layer, covering the polyethylene film, and then water cooling, cutting, rolling, packaging to obtain the self-adhesive waterproof roll material. Test Example 1

[0047] The low-temperature flexibility and joint peeling strength, self-repairing performance of the self-adhesive waterproof roll materials prepared in the examples and the comparative examples were tested. Low temperature flexibility was tested according to GB / T 328.14-2007 "Building Membranes-Determination of Low Temperature Flexibility of Bituminous Sheet Materials"; joint peel strength was tested according to GB / T 328.20-2007 "Building Membranes-Determination of Joint Peel Strength of Bituminous Sheet Materials"; and self-repairing performance was tested by preparing dumbbell-shaped tensile samples with a length of 150 mm, a width of 25 mm, and a thickness of 5 mm. After the tensile performance was tested, a small scratch was left on the surface of the sample. Then, the sample was placed at 65°C for 12 hours, and then the tensile test was performed again. The elongation recovery rate at break was calculated.

[0048] Table 1

[0049] As can be seen from Table 1, the self-adhesive waterproofing membrane prepared by the application has good low temperature flexibility and joint peel strength. The main body layer is completely immersed and wrapped with a grid cloth by butyl rubber modified bitumen, so it has high mechanical strength and excellent waterproof and barrier properties. By introducing organic vermiculite and organic borate ester compound, a dual protection mechanism of physical barrier and chemical bonding and self-repairing is constructed. The low glass transition temperature polymer matrix such as butyl rubber and SEBS can impart excellent low temperature flexibility.

[0050] The dynamic reversible nature of the borate ester bond allows the recombination after breaking under heat and force, thereby healing microcracks and achieving self-repairing. In the control example, since no borate ester compound is added, the sample cannot self-repair, and the sample breaks upon stretching, so there is no elongation recovery rate at break.

[0051] Compared with other examples, the joint strength of Example 4 is higher, which may be due to the fact that the benzene ring at one end of the molecule can be compatible with the organic phase, significantly enhancing the interfacial adhesion between the components, preventing phase separation, and the benzene ring structure can also produce π-π conjugation with the aromatic compounds in the asphalt, allowing it to be more uniformly dispersed and anchored in the asphalt phase. Therefore, the joint peel strength is the highest. Test Example 2

[0052] The self-adhesive waterproofing membranes prepared in the examples and the control example were subjected to aging and corrosion resistance tests. The aging condition was 90°C and 90% humidity for 15 days, and the corrosion condition was immersion in a 12wt% sodium chloride solution for 30 days. After the samples were subjected to aging and corrosion, respectively, the low temperature flexibility was tested again, and the increase in low temperature flexibility temperature was calculated to characterize the anti-aging and corrosion resistance performance.

[0053] Table 2

[0054] As can be seen from Table 2, the waterproofing membrane samples can maintain good performance after aging and salt solution corrosion, which is due to the fact that the present application utilizes the natural nanorod cluster and sheet structure of vermiculite to form a "labyrinth" effect after dispersion in the polymer matrix, thereby physically extending the penetration path of corrosion media such as water vapor, oxygen, and salt ions. The present application also achieves self-repairing through the borate ester complex, heals small cracks, thereby extending the service life. In addition, the boron / hydroxyl of the borate ester complex can interact with the surface of inorganic substances, significantly enhancing the interfacial adhesion between components and preventing phase separation. Through the combined action of modified vermiculite and borate ester complex, the prepared self-adhesive waterproofing membrane has better resistance to wet heat aging and salt erosion, and is particularly suitable for harsh environments such as coastal, underground, and high humidity.

[0055] The above detailed the preferred embodiments of the present application. It should be understood that those of ordinary skill in the art can make many modifications and changes without creative labor based on the concept of the present application. Therefore, any technical solutions obtained by logical analysis, reasoning or limited experiments based on the prior art within the concept of the present application shall be within the protection scope defined by the claims.

Claims

1. A self-adhesive waterproof membrane, characterized in that, From top to bottom, it includes a polyethylene film, a main layer, a self-adhesive layer, and a release film. The main layer is made by extruding and granulating matrix asphalt, butyl rubber, modified vermiculite, borate ester compound, antioxidant, and sulfur, followed by melting, double-sided impregnation and coating onto a mesh fabric, and calendering and shaping. The self-adhesive layer is made by melting and curing SEBS, hydrogenated petroleum resin, polyisobutylene, modified vermiculite, borate ester compound, plasticizer, and antioxidant.

2. The self-adhesive waterproof membrane as described in claim 1, characterized in that, The method for preparing the modified vermiculite includes the following steps: The modified vermiculite is obtained by mixing vermiculite with water, adjusting the pH with acid, heating, adding dioctadecyldimethylammonium chloride, stirring for 1-3 hours, filtering, washing, drying, and pulverizing.

3. The self-adhesive waterproof membrane as described in claim 2, characterized in that, The pH range for adjustment is 4-4.

5.

4. The self-adhesive waterproof membrane as described in claim 2, characterized in that, The temperature range is 80-85℃.

5. The self-adhesive waterproof membrane as described in claim 2, characterized in that, The mass ratio of vermiculite to dioctadecyldimethylammonium chloride is 1:0.2-0.

3.

6. The self-adhesive waterproof membrane as described in claim 1, characterized in that, The method for preparing the borate ester complex includes the following steps: Boric acid monomers were mixed with epoxidized soybean oil and heated. After adding a catalyst, the mixture was heated and stirred for 3-4 hours. The product was then discharged after post-treatment to obtain a borate ester complex.

7. The self-adhesive waterproof membrane as described in claim 6, characterized in that, The mass ratio of boric acid monomer to epoxidized soybean oil is 1:1-2.

8. The self-adhesive waterproof membrane as described in claim 1, characterized in that, The temperature range is 80-90℃.

9. The self-adhesive waterproof membrane as described in claim 1, characterized in that, The range for further temperature increases is 120-130℃.

10. A method for preparing a self-adhesive waterproof membrane as described in any one of claims 1-9, characterized in that, The steps include the following, in parts by weight: S1. The base layer is obtained by extruding and granulating 80-120 parts of base asphalt, 10-20 parts of butyl rubber, 5-15 parts of modified vermiculite, 4-8 parts of borate ester compound, 0.1-2 parts of antioxidant, and 0.1-0.5 parts of sulfur, followed by melting and double-sided impregnation onto a mesh fabric, and then calendering and shaping. The self-adhesive is obtained by melting and curing 80-120 parts of SEBS, 50-80 parts of hydrogenated petroleum resin, 20-40 parts of polyisobutylene, 1-5 parts of modified vermiculite, 1-5 parts of borate ester compound, 20-30 parts of plasticizer, and 1-2 parts of antioxidant. S2. Apply self-adhesive to the lower surface of the main body layer using a preheating roller, cover with a release film, and compact. S3. Apply hot melt adhesive to the upper surface of the main layer, cover with polyethylene film, press together, and then cool with water, cut, roll up and package to obtain the final product.

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