Self-adhesive modified asphalt waterproof coiled material and preparation method thereof

Abstract

The present application relates to waterproofing membrane technical field, propose a kind of self-adhesive modified asphalt waterproofing membrane and preparation method thereof, self-adhesive modified asphalt waterproofing membrane is from top to bottom in turn upper surface isolation layer, upper layer modified asphalt layer, upper layer polyester base layer, intermediate modified asphalt layer, lower layer polyester base layer, lower layer modified asphalt layer, lower surface isolation layer;Intermediate modified asphalt layer, lower layer modified asphalt layer are self-adhesive modified asphalt compound;The raw material of self-adhesive modified asphalt compound includes the following components: asphalt, styrene-butadiene-styrene block copolymer, styrene-butadiene rubber, softener, polyethylene wax, stabilizer, tackifying resin, modified talc powder;Tackifying resin includes octyl phenolic tackifying resin, C5 petroleum tackifying resin.Through the above technical scheme, the problem of insufficient peel strength of self-adhesive modified asphalt waterproofing membrane in related art is solved.

Description

Technical Field

[0001] This invention relates to the field of waterproof membrane technology, specifically to a self-adhesive modified bitumen waterproof membrane and its preparation method. Background Technology

[0002] Waterproof membranes, as a key material in building waterproofing projects, are widely used in various civil engineering projects such as roofs, basements, and tunnels. The performance of waterproof membranes directly affects the waterproofing effect, structural safety, and service life of buildings. However, traditional bitumen waterproof membranes typically rely on hot-melt or solvent bonding for application, which has limitations such as low construction efficiency and high requirements for the flatness of the substrate. Against this backdrop, self-adhesive modified bitumen waterproof membranes, due to their advantages such as simple construction and environmental friendliness, have gradually become the mainstream choice in the building waterproofing field.

[0003] However, existing self-adhesive modified bitumen waterproof membranes are susceptible to delamination during application due to factors such as changes in ambient temperature, insufficient flatness of the substrate, erosion from humid environments, or external tension. This delamination can lead to peeling between the membrane and the substrate, or between different membrane layers. Once delamination occurs, the integrity of the waterproof layer is compromised, resulting in potential leaks and subsequently causing a series of problems such as concrete corrosion and mold growth, affecting the safety and functionality of the building. Therefore, there is an urgent need to develop a self-adhesive modified bitumen waterproof membrane with higher peel strength. Summary of the Invention

[0004] This invention proposes a self-adhesive modified bitumen waterproof membrane and its preparation method, which solves the problem of insufficient peel strength of self-adhesive modified bitumen waterproof membranes in related technologies.

[0005] The technical solution of the present invention is as follows: This invention proposes a self-adhesive modified bitumen waterproof membrane, comprising, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; one end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and a first isolation film and a second isolation film are respectively provided on the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening; both the intermediate modified bitumen layer and the lower modified bitumen layer are self-adhesive modified bitumen adhesives. The raw materials of the self-adhesive modified asphalt compound include the following components by weight: 50-60 parts of first asphalt, 5-15 parts of first styrene-butadiene-styrene block copolymer, 5-10 parts of styrene-butadiene rubber, 10-20 parts of first softener, 3-5 parts of polyethylene wax, 5-10 parts of stabilizer, 1-5 parts of tackifying resin, and 15-25 parts of modified talc; the tackifying resin includes octylphenol tackifying resin and C5 petroleum tackifying resin.

[0006] As a further technical solution, the mass ratio of the octylphenol tackifying resin and the C5 petroleum tackifying resin is 1:2~4, preferably 1:3.

[0007] As a further technical solution, the modified talc powder is obtained by modifying talc powder with dodecyltrimethylammonium bromide and o-methoxybenzoic acid.

[0008] This invention improves the peel strength of waterproof membranes by adding talc modified with dodecyltrimethylammonium bromide and o-methoxybenzoic acid. Talc is prone to self-agglomeration, leading to uneven dispersion in the adhesive and stress concentration points, thus reducing the peel strength of the waterproof membrane. Dodecyltrimethylammonium bromide can form electrostatic adsorption with the surface of talc, increasing the electrostatic repulsion between nanoparticles and improving the dispersibility of talc. The carboxyl groups of o-methoxybenzoic acid can form hydrogen bonds with the surface of talc, and the steric hindrance of the benzene ring can further improve the dispersibility of talc. Through the synergistic effect of the electrostatic repulsion of dodecyltrimethylammonium bromide and the steric hindrance and hydrogen bonding of the benzene ring in o-methoxybenzoic acid, the dispersibility of talc is improved, thereby enhancing the peel strength of the waterproof membrane.

[0009] As a further technical solution, the total mass of the dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc.

[0010] As a further technical solution, the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:4~6, preferably 3:5.

[0011] As a further technical solution, the preparation method of the modified talc powder includes the following steps: dispersing the dodecyltrimethylammonium bromide and o-methoxybenzoic acid evenly in a solvent, adding talc powder and mixing, then filtering and drying to obtain modified talc powder.

[0012] As a further technical solution, the mixing temperature is 50~60℃, and the mixing time is 1~2h.

[0013] As a further technical solution, both the upper polyester base layer and the lower polyester base layer are polyethylene terephthalate films.

[0014] As a further technical solution, both the first and second separators are polyethylene-coated silicone films.

[0015] As a further technical solution, the raw materials of the upper modified asphalt layer include the following components by weight: 50-60 parts of second asphalt, 10-20 parts of second styrene-butadiene-styrene block copolymer, 5-15 parts of second softener, 5-15 parts of wollastonite, 5-10 parts of phenolic resin, and 2-4 parts of antioxidant.

[0016] As a further technical solution, the first softener and the second softener each independently include one or more of aromatic oil, naphthenic oil, and engine oil.

[0017] As a further technical solution, the first stabilizer and the second stabilizer each independently include one or both of polyphosphoric acid and triphosphate.

[0018] As a further technical solution, the antioxidant includes one or more of antioxidant 1010, antioxidant 164, and antioxidant 1098.

[0019] This invention also proposes a method for preparing a self-adhesive modified bitumen waterproof membrane, which includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 160~175℃, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 160~175℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, an intermediate modified bitumen layer is obtained, and a lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0020] The working principle and beneficial effects of this invention are as follows: This invention improves the peel strength of self-adhesive modified bitumen waterproof membrane by adding octylphenol tackifying resin and C5 petroleum tackifying resin as tackifying resins. The hydroxyl groups in the octylphenol tackifying resin can form hydrogen bonds with the ester groups on the surface of the polyester substrate, effectively enhancing the interfacial adhesion between the adhesive and the polyester substrate. The C5 petroleum tackifying resin has excellent compatibility with the styrene-butadiene-styrene block copolymer and styrene-butadiene rubber in the adhesive, effectively improving the wettability and flowability of the adhesive, promoting uniform spreading and penetration of the adhesive on the substrate and polyester substrate surfaces, allowing the adhesive to adhere more tightly to the substrate and polyester substrate surfaces, thereby improving peel strength. When the two work synergistically, the C5 petroleum tackifying resin, by improving the wettability and flowability of the adhesive, and in conjunction with the hydrogen bonds in the octylphenol tackifying resin, increases the adsorption between the adhesive and the substrate and the membrane, thus improving the peel strength of the self-adhesive modified bitumen waterproof membrane. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] In the following examples and comparative examples: The asphalt is 90# asphalt; styrene-butadiene-styrene block copolymer, model: YH-796E; styrene-butadiene rubber, model: 1502; aromatic oil, model: A1004; polyethylene wax, model: AC-6A; polyphosphoric acid, molecular weight: 337.93; octylphenolic tackifying resin, model: HY-203; C5 petroleum tackifying resin, model: RKA1090; phenolic resin, model: SP-1068; wollastonite 30μm; talc powder 20μm; Both the upper and lower polyester base layers are polyethylene terephthalate films with a thickness of 0.9 mm. The upper surface isolation layer, the lower surface isolation layer, the first isolation film, and the second isolation film are all polyethylene-coated silicone films with a thickness of 1 mm. The upper modified asphalt layer has a thickness of 1.5 mm; The thickness of both the intermediate modified asphalt layer and the lower modified asphalt layer is 1.5 mm.

[0023] Example 1 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 50 parts asphalt, 5 parts styrene-butadiene-styrene block copolymer, 5 parts styrene-butadiene rubber, 10 parts aromatic oil, 3 parts polyethylene wax, 5 parts stabilizer, 1 part tackifying resin, and 15 parts modified talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:2, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide and o-methoxybenzoic acid in anhydrous ethanol, talc powder is added and mixed at 50°C for 2 hours. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1g:10mL, the total mass of dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc powder, and the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:4. The raw materials for the upper modified asphalt layer include the following components by weight: 50 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 5 parts aromatic oil, 5 parts wollastonite, 5 parts phenolic resin, 2 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 160°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 160℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0024] Example 2 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts modified talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:2, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide and o-methoxybenzoic acid in anhydrous ethanol, talc powder is added and mixed at 55°C for 1.5 h. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1 g: 10 mL, the total mass of dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc powder, and the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:4. The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0025] Example 3 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate modified bitumen layer and the lower modified bitumen layer are both self-adhesive modified bitumen adhesives, and the raw materials of the intermediate modified bitumen layer and the lower modified bitumen layer are the same. The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 60 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts styrene-butadiene rubber, 20 parts aromatic oil, 5 parts polyethylene wax, 10 parts stabilizer, 5 parts tackifying resin, and 25 parts modified talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:2, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1; The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide and o-methoxybenzoic acid in anhydrous ethanol, talc powder is added and mixed at 60°C for 1 hour. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1 g: 10 mL, the total mass of dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc powder, and the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:4. The raw materials for the upper modified asphalt layer include the following components by weight: 60 parts asphalt, 20 parts styrene-butadiene-styrene block copolymer, 15 parts aromatic oil, 15 parts wollastonite, 10 parts phenolic resin, 4 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 175°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 175°C, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0026] Example 4 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts modified talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:3, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide and o-methoxybenzoic acid in anhydrous ethanol, talc powder is added and mixed at 55°C for 1.5 h. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1 g: 10 mL, the total mass of dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc powder, and the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:4. The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0027] Example 5 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts modified talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:4, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1; The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide and o-methoxybenzoic acid in anhydrous ethanol, talc powder is added and mixed at 55°C for 1.5 h. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1 g: 10 mL, the total mass of dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc powder, and the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:4. The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0028] Example 6 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts modified talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:2, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide and o-methoxybenzoic acid in anhydrous ethanol, talc powder is added and mixed at 55°C for 1.5 h. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1 g: 10 mL, the total mass of dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc powder, and the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:5. The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0029] Example 7 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts modified talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:2, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide and o-methoxybenzoic acid in anhydrous ethanol, talc powder is added and mixed at 55°C for 1.5 h. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1 g: 10 mL, the total mass of dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc powder, and the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 1:2. The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0030] Example 8 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:2, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1; The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0031] Example 9 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts modified talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:2, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide in water, talc powder is added and mixed at 55°C for 1.5 h. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1 g: 10 mL, and the mass of dodecyltrimethylammonium bromide is 8% of the mass of talc powder. The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0032] Example 10 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate modified bitumen layer and the lower modified bitumen layer are both self-adhesive modified bitumen adhesives, and the raw materials of the intermediate modified bitumen layer and the lower modified bitumen layer are the same. The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts modified talc; wherein the tackifying resin is composed of octylphenol tackifying resin and C5 petroleum tackifying resin in a mass ratio of 1:2, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. The preparation method of modified talc includes the following steps: after uniformly dispersing o-methoxybenzoic acid in anhydrous ethanol, talc is added and mixed at 55°C for 1.5 h, followed by filtration and drying to obtain modified talc. The mass-volume ratio of talc to anhydrous ethanol is 1 g: 10 mL, and the mass of o-methoxybenzoic acid is 8% of the mass of talc. The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0033] Comparative Example 1 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts modified talc; wherein the tackifying resin is octylphenol tackifying resin, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1; The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide and o-methoxybenzoic acid in anhydrous ethanol, talc powder is added and mixed at 55°C for 1.5 h. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1 g: 10 mL, the total mass of dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc powder, and the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:4. The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0034] Comparative Example 2 A self-adhesive modified bitumen waterproof membrane comprises, from top to bottom, an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer; the intermediate and lower modified bitumen layers are both self-adhesive modified bitumen adhesives; the raw materials of the intermediate and lower modified bitumen layers are the same; The raw materials for self-adhesive modified asphalt rubber compound include the following components by weight: 55 parts asphalt, 10 parts styrene-butadiene-styrene block copolymer, 7 parts styrene-butadiene rubber, 15 parts aromatic oil, 4 parts polyethylene wax, 7 parts stabilizer, 3 parts tackifying resin, and 20 parts modified talc; wherein the tackifying resin is C5 petroleum tackifying resin, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1; The preparation method of modified talc includes the following steps: after uniformly dispersing dodecyltrimethylammonium bromide and o-methoxybenzoic acid in anhydrous ethanol, talc powder is added and mixed at 55°C for 1.5 h. After filtration and drying, modified talc powder is obtained. The mass-volume ratio of talc powder to anhydrous ethanol is 1 g: 10 mL, the total mass of dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc powder, and the mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:4. The raw materials for the upper modified asphalt layer include the following components by weight: 55 parts asphalt, 15 parts styrene-butadiene-styrene block copolymer, 10 parts aromatic oil, 10 parts wollastonite, 7 parts phenolic resin, 3 parts antioxidant 1010, and the stabilizer is composed of polyphosphoric acid and triphosphate in a mass ratio of 1:1. A method for preparing a self-adhesive modified bitumen waterproof membrane includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 170°C, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 170℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, the intermediate modified bitumen layer is obtained, and the lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening are respectively provided with a first release membrane and a second release membrane.

[0035] Test case The adhesive-modified bitumen waterproof membranes from Examples 1-10 and Comparative Examples 1-2 were tested according to the following method: The peel strength between membranes and the peel strength between membrane and post-poured concrete were tested according to the method in GB / T 23457-2017 "Pre-laid Waterproof Membranes". The test results are the average values ​​of 5 samples. The test results are shown in Table 1 below.

[0036] Table 1. Performance test results of waterproof membranes in Examples 1-9 and Examples 1-2

[0037] In Examples 1-5, the peel strength between rolls and the peel strength between rolls and the post-cast concrete were higher than those in Comparative Examples 1-2. This indicates that the present invention can improve the peel strength between rolls and the peel strength between rolls and the post-cast concrete by adding octylphenol tackifying resin and C5 petroleum tackifying resin as tackifying resin.

[0038] In Examples 2 and 6-7, the peel strength between the rolls and the peel strength between the rolls and the post-cast concrete were higher than those in Examples 8-10. This indicates that the present invention can improve the peel strength between the rolls and the peel strength between the rolls and the post-cast concrete by adding talc powder modified with dodecyltrimethylammonium bromide and o-methoxybenzoic acid.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-adhesive modified bitumen waterproof membrane, characterized in that, From top to bottom, the structure consists of an upper surface isolation layer, an upper modified bitumen layer, an upper polyester base layer, an intermediate modified bitumen layer, a lower polyester base layer, a lower modified bitumen layer, and a lower surface isolation layer. One end of the waterproof membrane has an overlap opening. This overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer. A first isolation film and a second isolation film are respectively provided on the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer within the overlap opening. Both the intermediate modified bitumen layer and the lower modified bitumen layer are self-adhesive modified bitumen adhesives. The raw materials of the self-adhesive modified asphalt compound include the following components by weight: 50-60 parts of first asphalt, 5-15 parts of first styrene-butadiene-styrene block copolymer, 5-10 parts of styrene-butadiene rubber, 10-20 parts of first softener, 3-5 parts of polyethylene wax, 5-10 parts of stabilizer, 1-5 parts of tackifying resin, and 15-25 parts of modified talc; the tackifying resin includes octylphenol tackifying resin and C5 petroleum tackifying resin.

2. The self-adhesive modified bitumen waterproof membrane according to claim 1, characterized in that, The mass ratio of the octylphenol tackifying resin to the C5 petroleum tackifying resin is 1:2~4.

3. The self-adhesive modified bitumen waterproof membrane according to claim 1, characterized in that, The modified talc powder is obtained by modifying talc powder with dodecyltrimethylammonium bromide and o-methoxybenzoic acid.

4. The self-adhesive modified bitumen waterproof membrane according to claim 3, characterized in that, The total mass of the dodecyltrimethylammonium bromide and o-methoxybenzoic acid is 8% of the mass of talc.

5. The self-adhesive modified bitumen waterproof membrane according to claim 4, characterized in that, The mass ratio of dodecyltrimethylammonium bromide to o-methoxybenzoic acid is 3:4~6.

6. The self-adhesive modified bitumen waterproof membrane according to claim 3, characterized in that, The method for preparing the modified talc powder includes the following steps: dispersing the dodecyltrimethylammonium bromide and o-methoxybenzoic acid evenly in a solvent, adding talc powder and mixing, then filtering and drying to obtain the modified talc powder.

7. The self-adhesive modified bitumen waterproof membrane according to claim 6, characterized in that, The mixing temperature is 50~60℃, and the mixing time is 1~2h.

8. The self-adhesive modified bitumen waterproof membrane according to claim 1, characterized in that, Both the upper and lower polyester base layers are polyethylene terephthalate films.

9. The self-adhesive modified bitumen waterproof membrane according to claim 1, characterized in that, The raw materials for the upper modified asphalt layer include the following components by weight: 50-60 parts of second asphalt, 10-20 parts of second styrene-butadiene-styrene block copolymer, 5-15 parts of second softener, 5-15 parts of wollastonite, 5-10 parts of phenolic resin, and 2-4 parts of antioxidant.

10. A method for preparing a self-adhesive modified bitumen waterproof membrane, used to prepare the self-adhesive modified bitumen waterproof membrane according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. After the raw materials of the self-adhesive modified asphalt compound are mixed evenly at 160~175℃, intermediate modified asphalt layer material and lower modified asphalt layer material are obtained respectively. S2. After the raw materials of the upper modified asphalt layer are mixed evenly at 160~175℃, the upper modified asphalt layer is obtained. S3. After being compounded in the following order from top to bottom: upper surface isolation layer, upper modified bitumen layer, and upper polyester base layer, a self-adhesive modified bitumen waterproof membrane semi-finished product is obtained. S4. After coating the lower surface of the upper polyester base in the self-adhesive modified bitumen waterproof membrane semi-finished product with the intermediate modified bitumen layer material, an intermediate modified bitumen layer is obtained, and a lower polyester base layer is covered on the lower surface of the intermediate modified bitumen layer. S5. After coating the lower surface of the lower polyester base layer with the lower modified bitumen layer material, a lower modified bitumen layer is obtained, and a lower surface isolation layer is covered on the lower surface of the lower modified bitumen layer to obtain a self-adhesive modified bitumen waterproof membrane. One end of the waterproof membrane is provided with an overlap opening; the overlap opening is located between the intermediate modified bitumen layer and the lower polyester base layer, and a first release membrane and a second release membrane are respectively provided on the lower surface of the intermediate modified bitumen layer and the upper surface of the lower polyester base layer on the inner wall of the overlap opening.

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