Composite waterproof coiled material and production process thereof

Abstract

The invention relates to the technical field of building waterproof materials, and provides a composite waterproof coiled material and a production process thereof.The composite waterproof coiled material sequentially comprises an upper matrix reinforcing layer, a main body structural layer and a lower matrix reinforcing layer from top to bottom, and the main body structural layer sequentially comprises an asphalt-based self-adhesive layer, a macromolecule binding layer and a macromolecule self-adhesive layer from top to bottom; the width of the upper tire body reinforcing layer and the width of the lower tire body reinforcing layer are respectively and independently 25%-50% of the width of the main body structure layer; the parts, which are not covered by the upper tire body reinforcing layer and the lower tire body reinforcing layer, of the left and right sides of the upper and lower surfaces of the main body structure layer are of waveform wrinkle structures. According to the technical scheme, the problems of poor tensile property and poor aging resistance of the waterproof roll in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building waterproof materials, and in particular to a composite waterproof coiled material and a production process thereof. Background Art

[0002] Waterproof membrane is a flexible building material product that can be rolled into a roll. It is mainly used in building walls, roofs, tunnels, roads and other places to prevent external rainwater and groundwater leakage. It is the key material for the leak-free connection between the engineering foundation and the building, and is the first barrier for waterproofing the entire project, playing a vital role in the entire project.

[0003] However, the tensile strength of traditional waterproofing membranes is relatively low, and the aging resistance is relatively poor. The overall strength and toughness of the membranes are limited. In addition, when used outdoors for a long time, they will become hard, brittle, and cracked. When stretched by a large external force, they are prone to breakage, making it difficult to meet the needs of some building parts that have high requirements for waterproofing and may produce large deformations. In addition, existing waterproofing membranes have poor adaptability to complex base surfaces, and there are problems such as high construction difficulty, poor bonding effect, and easy leakage at joints when used in complex structures. Therefore, providing a composite waterproofing membrane with excellent tensile properties, aging resistance, and applicable to various complex base surfaces is important for ensuring the long-term stability of building waterproofing performance. Summary of the invention

[0004] The invention provides a composite waterproof coiled material and a production process thereof, which solves the problems of poor tensile performance and poor aging resistance of the waterproof coiled material in the related art.

[0005] The technical solution of the present invention is as follows: The present invention provides a composite waterproof roll material, which comprises an upper carcass reinforcement layer, a main structural layer and a lower carcass reinforcement layer in order from top to bottom, wherein the main structural layer comprises an asphalt-based self-adhesive layer, a polymer bonding layer and a polymer self-adhesive layer in order from top to bottom; The width of the upper carcass reinforcement layer and the lower carcass reinforcement layer are independently 25% to 50% of the width of the main structural layer; The left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcing layer and the lower carcass reinforcing layer adopt a corrugated structure; The asphalt-based self-adhesive layer comprises the following components in parts by weight: 45-65 parts of modified asphalt, 3-12 parts of styrene-butadiene-styrene block copolymer, 2-8 parts of styrene-isoprene-styrene block copolymer, 3-5 parts of styrene-butadiene rubber, 20-40 parts of filler, and 2-3 parts of tackifier; The filler includes kaolin and manganese acetate; The weight ratio of the kaolin to manganese acetate is 1:4-9:1.

[0006] As a further technical solution, the weight ratio of kaolin to manganese acetate is 4-7:1.

[0007] When the weight ratio of kaolin and manganese acetate is 4~7:1, the mechanical properties and aging resistance of the composite waterproof membrane can be further improved.

[0008] As a further technical solution, the filler is a calcined filler, and the preparation method of the calcined filler includes the following steps: uniformly mixing the kaolin and the manganese acetate, calcining, and crushing to obtain the calcined filler.

[0009] After kaolin and manganese acetate are evenly mixed, calcination treatment can be performed to further improve the mechanical properties and aging resistance of the composite waterproof membrane.

[0010] As a further technical solution, during the calcination, the temperature is 600-700°C and the time is 2-3 hours.

[0011] As a further technical solution, the calcined filler is a modified calcined filler, and the raw materials of the modified calcined filler include the calcined filler and a modifier, and the modifier includes 2-hydroxybenzothiazole and polyvinyl acetate in a weight ratio of 1:3.

[0012] When the modifiers are 2-hydroxybenzothiazole and polyvinyl acetate, the two are used together to modify the calcined filler, which can improve the dispersion of the calcined filler in the asphalt-based self-adhesive layer system, so that the calcined filler can be better filled in the asphalt-based self-adhesive layer system to form a dense and stable structure, thereby further improving the mechanical properties and aging resistance of the composite waterproof membrane.

[0013] As a further technical solution, the weight ratio of the calcined filler to the modifier is 40:3-6.

[0014] When the weight ratio of the filler and the modifier after calcination is 40:4~6, the mechanical properties and aging resistance of the composite waterproof membrane can be further improved.

[0015] As a further technical solution, the preparation method of the modified calcined filler includes the following steps: dissolving the modifier in anhydrous ethanol, adding the calcined filler, dispersing evenly, and drying to obtain the modified calcined filler.

[0016] As a further technical solution, the material of the upper carcass reinforcement layer and the lower upper carcass reinforcement layer are independently one of polyester cloth, polypropylene cloth and polyester cloth.

[0017] As a further technical solution, the left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer are each independently covered with a removable isolation film.

[0018] As a further technical solution, the isolation film is one of a polyethylene film and a polypropylene film.

[0019] As a further technical solution, the thickness of the isolation membrane is 0.005~0.01mm.

[0020] As a further technical solution, the material of the polymer bonding layer is one or more of high-density polyethylene, EPDM rubber, and thermoplastic polyolefin.

[0021] As a further technical solution, the thickness of the polymer binding layer is 0.01~0.03mm.

[0022] As a further technical solution, the material of the polymer self-adhesive layer is one or two of styrene-butadiene-styrene block copolymer and styrene-isoprene-styrene block copolymer.

[0023] As a further technical solution, the thickness of the polymer self-adhesive layer is 0.2-1 mm.

[0024] As a further technical solution, the tackifier includes one or more of terpene resin, rosin resin, and C5 resin.

[0025] As a further technical solution, the thickness of the main structural layer is 0.5~3.0 mm.

[0026] As a further technical solution, the thickness of the upper carcass reinforcement layer and the lower carcass reinforcement layer are independently 0.2-0.6 mm.

[0027] The present invention also proposes a production process of the composite waterproofing membrane, comprising the following steps: S1, mixing the components of the asphalt-based self-adhesive layer in parts by weight uniformly, and extruding to obtain an asphalt-based self-adhesive layer sheet; S2, covering the asphalt-based self-adhesive layer sheet and the polymer self-adhesive layer on the upper and lower surfaces of the polymer binding layer respectively, and rolling forming to form the main structural layer; S3. Cover the upper and lower surfaces of the main structural layer respectively in the order of upper carcass reinforcement layer, main structural layer and lower carcass reinforcement layer from top to bottom. After roll forming, independently set removable isolation films on the left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer. Then, mechanical pressing is used to make the left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer into a corrugated structure to obtain the composite waterproof membrane.

[0028] As a further technical solution, in step S1, the temperature during extrusion is 165-185°C.

[0029] The working principle and beneficial effects of the present invention are: 1. In the present invention, the composite waterproof membrane has a corrugated structure, which can increase the surface area and provide more contact points, so that the prepared composite waterproof membrane can be more firmly bonded to uneven or curved base surfaces. Moreover, the unique corrugated structure can make the construction workers more flexible and convenient in application, and the bonding can be completed accurately and efficiently even in complex application environments.

[0030] 2. In the present invention, the asphalt-based self-adhesive layer in the composite waterproofing membrane is based on SBS modified asphalt, combined with styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, styrene-butadiene rubber, filler and tackifier to form an asphalt-based self-adhesive layer with a dense and stable internal structure, thereby improving the mechanical properties and aging resistance of the composite waterproofing membrane. Among them, the filler includes kaolin and manganese acetate, and the synergistic compounding of the two can significantly improve the mechanical properties and aging resistance of the composite waterproofing membrane. DETAILED DESCRIPTION

[0031] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the following examples and comparative examples, the model of SBS modified asphalt is SBS modified asphalt (IC), purchased from Maoming Fuwei Chemical Co., Ltd.; the model of styrene-butadiene-styrene block copolymer is LG-501; the model of styrene-isoprene-styrene block copolymer is SIS D1114P; the model of styrene-butadiene rubber is D1124; the particle size of kaolin is 325 mesh; the content of manganese acetate is 99wt%; the model of polyvinyl acetate is XH-018; the model of terpene resin is T100; the thickness of the main structural layer is 1.5mm; the thickness of the polymer self-adhesive layer is 0.5mm, and the material is styrene-butadiene-styrene block copolymer, and its model is LG-501; the thickness of the polymer bonding layer is 0.02mm, and the material is ethylene propylene diene monomer rubber, and its model is MM-X109; the material of the upper carcass reinforcement layer and the lower upper carcass reinforcement layer is 900D polyester cloth, and the thickness is 0.5mm; the isolation membrane is a polyethylene film with a thickness of 0.008mm, and the polyethylene model is U-PE350.

[0033] Example 1 A composite waterproofing roll material, comprising, from top to bottom, an upper carcass reinforcement layer, a main structural layer and a lower carcass reinforcement layer, wherein the main structural layer comprises, from top to bottom, an asphalt-based self-adhesive layer, a polymer bonding layer and a polymer self-adhesive layer; The width of the upper carcass reinforcement layer and the lower carcass reinforcement layer are each independently 25% of the width of the main structural layer; The left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer adopt a corrugated structure; The asphalt-based self-adhesive layer comprises the following components in parts by weight: 45 parts of SBS modified asphalt, 3 parts of styrene-butadiene-styrene block copolymer, 2 parts of styrene-isoprene-styrene block copolymer, 3 parts of styrene-butadiene rubber, 20 parts of filler, 2 parts of terpene resin; The filler includes 4 parts of kaolin and 16 parts of manganese acetate; The production process of composite waterproof membrane includes the following steps: S1, mixing the components of the asphalt-based self-adhesive layer in parts by weight uniformly, and extruding to obtain an asphalt-based self-adhesive layer sheet; Among them, during extrusion, the extrusion temperature of zone 1 is 165°C, the extrusion temperature of zone 2 is 185°C, and the extrusion temperature of zone 3 is 175°C; S2, covering the asphalt-based self-adhesive layer sheet and the polymer self-adhesive layer on the upper and lower surfaces of the polymer bonding layer respectively, and rolling forming to form a main structural layer; S3. Cover the upper carcass reinforcement layer and the lower carcass reinforcement layer on the upper and lower surfaces of the main structural layer respectively in the order of upper carcass reinforcement layer, main structural layer and lower carcass reinforcement layer from top to bottom. After roll forming, set removable isolation films on the left and right sides of the upper and lower surfaces of the main structural layer not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer respectively. Then, mechanical pressing is used to make the left and right sides of the upper and lower surfaces of the main structural layer not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer into a corrugated structure to obtain a composite waterproof membrane.

[0034] Example 2 A composite waterproofing roll material, comprising, from top to bottom, an upper carcass reinforcement layer, a main structural layer and a lower carcass reinforcement layer, wherein the main structural layer comprises, from top to bottom, an asphalt-based self-adhesive layer, a polymer bonding layer and a polymer self-adhesive layer; The width of the upper carcass reinforcement layer and the lower carcass reinforcement layer are each independently 50% of the width of the main structural layer; The left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer adopt a corrugated structure; The asphalt-based self-adhesive layer comprises the following components in parts by weight: 65 parts of SBS modified asphalt, 12 parts of styrene-butadiene-styrene block copolymer, 8 parts of styrene-isoprene-styrene block copolymer, 5 parts of styrene-butadiene rubber, 40 parts of filler, 3 parts of terpene resin; The filler includes 36 parts of kaolin and 4 parts of manganese acetate; The production process of composite waterproof membrane includes the following steps: S1, mixing the components of the asphalt-based self-adhesive layer in parts by weight uniformly, and extruding to obtain an asphalt-based self-adhesive layer sheet; Among them, during extrusion, the extrusion temperature of zone 1 is 165°C, the extrusion temperature of zone 2 is 185°C, and the extrusion temperature of zone 3 is 175°C; S2, covering the asphalt-based self-adhesive layer sheet and the polymer self-adhesive layer on the upper and lower surfaces of the polymer bonding layer respectively, and rolling forming to form a main structural layer; S3. Cover the upper carcass reinforcement layer and the lower carcass reinforcement layer on the upper and lower surfaces of the main structural layer respectively in the order of upper carcass reinforcement layer, main structural layer and lower carcass reinforcement layer from top to bottom. After roll forming, set removable isolation films on the left and right sides of the upper and lower surfaces of the main structural layer not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer respectively. Then, mechanical pressing is used to make the left and right sides of the upper and lower surfaces of the main structural layer not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer into a corrugated structure to obtain a composite waterproof membrane.

[0035] Example 3 The only difference between this embodiment and embodiment 2 is that, in this embodiment, the filler includes 30 parts of kaolin and 10 parts of manganese acetate.

[0036] Example 4 The only difference between this embodiment and embodiment 2 is that, in this embodiment, the filler includes 32 parts of kaolin and 8 parts of manganese acetate.

[0037] Example 5 The only difference between this embodiment and embodiment 2 is that, in this embodiment, the filler includes 35 parts of kaolin and 5 parts of manganese acetate.

[0038] Example 6 The only difference between this embodiment and embodiment 5 is that in this embodiment, the filler is a calcined filler, and its preparation method includes the following steps: 35 parts of kaolin and 5 parts of manganese acetate are mixed evenly, calcined at 650° C. for 2.5 hours, and crushed to obtain the calcined filler.

[0039] Example 7 The only difference between this embodiment and embodiment 5 is that in this embodiment, the filler is a modified filler, and its preparation method comprises the following steps: after dissolving 8 parts of 2-hydroxybenzothiazole in 50 parts of anhydrous ethanol, adding 40 parts of filler (the weight ratio of kaolin and manganese acetate is 7:1), dispersing evenly, and drying to obtain the modified filler.

[0040] Example 8 The only difference between this embodiment and embodiment 5 is that in this embodiment, the filler is a modified filler, and its preparation method comprises the following steps: after dissolving 8 parts of polyvinyl acetate in 50 parts of anhydrous ethanol, adding 40 parts of filler (the weight ratio of kaolin and manganese acetate is 7:1), dispersing evenly, and drying to obtain the modified filler.

[0041] Example 9 The difference between this embodiment and embodiment 8 is that, in this embodiment, the filler is a modified calcined filler, and its preparation method comprises the following steps: A1. 35 parts of kaolin and 5 parts of manganese acetate were mixed evenly, calcined at 650° C. for 2.5 h, and crushed to obtain a calcined filler; A2. Dissolve 8 parts of 2-hydroxybenzothiazole in 50 parts of anhydrous ethanol, add the calcined filler, disperse evenly, and dry to obtain a modified calcined filler.

[0042] Example 10 The only difference between this embodiment and embodiment 9 is that in this embodiment, 2-hydroxybenzothiazole is replaced by an equal amount of polyvinyl acetate.

[0043] Embodiment 11 The only difference between this embodiment and embodiment 10 is that in this embodiment, the filler is a modified filler, and its preparation method comprises the following steps: after dissolving 2 parts of 2-hydroxybenzothiazole and 6 parts of polyvinyl acetate in 50 parts of anhydrous ethanol, 40 parts of filler (the weight ratio of kaolin and manganese acetate is 7:1) are added, dispersed evenly, and dried to obtain the modified filler.

[0044] Example 12 The difference between this embodiment and embodiment 11 is that, in this embodiment, the filler is a modified calcined filler, and its preparation method comprises the following steps: A1. 35 parts of kaolin and 5 parts of manganese acetate were mixed evenly, calcined at 650° C. for 2.5 h, and crushed to obtain a calcined filler; A2. Dissolve 2 parts of 2-hydroxybenzothiazole and 6 parts of polyvinyl acetate in 50 parts of anhydrous ethanol, add the calcined filler, disperse evenly, and dry to obtain a modified calcined filler.

[0045] Example 13 The only difference between this embodiment and embodiment 12 is that in this embodiment, 0.25 parts of 2-hydroxybenzothiazole and 0.75 parts of polyvinyl acetate are added.

[0046] Embodiment 14 The only difference between this embodiment and embodiment 12 is that, in this embodiment, 1 part of 2-hydroxybenzothiazole is added and 3 parts of polyvinyl acetate are added.

[0047] Embodiment 15 The only difference between this embodiment and embodiment 12 is that in this embodiment, 1.5 parts of 2-hydroxybenzothiazole and 4.5 parts of polyvinyl acetate are added.

[0048] Comparative Example 1 The only difference between this comparative example and Example 1 is that in this comparative example, the filler includes only 20 parts of kaolin.

[0049] Comparative Example 2 The difference between this comparative example and Example 1 is that, in this comparative example, the filler only includes 20 parts of manganese acetate.

[0050] Comparative Example 3 The only difference between this comparative example and Example 1 is that no filler is added in this comparative example.

[0051] The composite waterproof membranes prepared in Examples 1 to 15 and Comparative Examples 1 to 3 were subjected to the following performance tests in accordance with GB / T 23457-2017 "Pre-laid waterproof membranes": ① Tensile performance test: The composite waterproof membrane samples prepared in Examples 1 to 15 and Comparative Examples 1 to 3 were subjected to longitudinal maximum tensile force and transverse maximum tensile force tests, wherein the test results of longitudinal maximum tensile force and transverse maximum tensile force were the average values ​​of 5 samples; ② Aging resistance test: After the composite waterproof membrane samples prepared in Examples 1 to 15 and Comparative Examples 1 to 3 were subjected to an aging resistance test, a tensile test was performed after the aging resistance test according to the tensile test method in GB / T 23457-2017 "Pre-laid waterproof membrane", and the tensile retention rate was calculated according to the following formula: tensile retention rate (%) = tensile force after aging resistance test / tensile force before aging resistance test × 100%, wherein, in the aging resistance test, the temperature was 80°C and the time was 168h.

[0052] The test results are shown in Table 1 below: Table 1 Performance test results of the composite waterproof membranes of Examples 1 to 15 and Comparative Examples 1 to 3

[0053] Compared with Comparative Examples 1 to 3, the maximum longitudinal tensile force and the maximum transverse tensile force of Example 1 are significantly improved, and the change rate of the aging-resistant tensile strength is significantly reduced, indicating that when the asphalt-based self-adhesive layer in the composite waterproof membrane includes kaolin and manganese acetate, the two have a synergistic effect and can significantly improve the mechanical properties and aging resistance of the composite waterproof membrane.

[0054] Compared with Examples 2 to 3, the maximum longitudinal tensile force and the maximum transverse tensile force of Examples 4 to 5 are increased, and the change rate of the aging-resistant tensile strength is reduced, indicating that when the weight ratio of kaolin and manganese acetate is 4 to 7:1, the mechanical properties and aging resistance of the composite waterproof membrane can be further improved.

[0055] Compared with Example 5, the maximum longitudinal tensile force and the maximum transverse tensile force of Example 6 are increased, and the change rate of the aging-resistant tensile strength is reduced, indicating that after kaolin and manganese acetate are evenly mixed and then calcined, the mechanical properties and aging resistance of the composite waterproof membrane can be further improved.

[0056] Compared with Examples 6 to 10, the maximum longitudinal tensile force and the maximum transverse tensile force of Examples 12 to 15 are increased, and the change rate of the aging-resistant tensile strength is reduced, indicating that after the filler is calcined, the filler is modified with 2-hydroxybenzothiazole and polyvinyl acetate to further improve the mechanical properties and aging resistance of the composite waterproof membrane.

[0057] Compared with Examples 12 to 13, the maximum longitudinal tensile force and the maximum transverse tensile force of Examples 14 to 15 are increased, and the change rate of the aging-resistant tensile strength is reduced, indicating that when the weight ratio of the calcined filler and the modifier is 40:3 to 6, the mechanical properties and aging resistance of the composite waterproof membrane can be further improved.

[0058] The above are only 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 in the protection scope of the present invention.

Claims

1. A composite waterproof roll, characterized in that: It includes an upper carcass reinforcement layer, a main structural layer and a lower carcass reinforcement layer in order from top to bottom, and the main structural layer includes an asphalt-based self-adhesive layer, a polymer bonding layer and a polymer self-adhesive layer in order from top to bottom; The width of the upper carcass reinforcement layer and the lower carcass reinforcement layer are independently 25% to 50% of the width of the main structural layer; The left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcing layer and the lower carcass reinforcing layer adopt a corrugated structure; The asphalt-based self-adhesive layer comprises the following components in parts by weight: 45-65 parts of SBS modified asphalt, 3-12 parts of styrene-butadiene-styrene block copolymer, 2-8 parts of styrene-isoprene-styrene block copolymer, 3-5 parts of styrene-butadiene rubber, 20-40 parts of filler, and 2-3 parts of tackifier; The filler includes kaolin and manganese acetate; The weight ratio of the kaolin to manganese acetate is 1:4-9:

1.

2. A composite waterproof membrane according to claim 1, characterized in that: The weight ratio of the kaolin to manganese acetate is 4-7:

1.

3. A composite waterproof membrane according to claim 1, characterized in that: The filler is a calcined filler, and the preparation method of the calcined filler comprises the following steps: uniformly mixing the kaolin and the manganese acetate, calcining, and crushing to obtain the calcined filler.

4. A composite waterproofing membrane according to claim 3, characterized in that: The calcined filler is a modified calcined filler, and the raw materials of the modified calcined filler include the calcined filler and a modifier, and the modifier includes 2-hydroxybenzothiazole and polyvinyl acetate in a weight ratio of 1:

3.

5. A composite waterproof membrane according to claim 4, characterized in that: The weight ratio of the calcined filler to the modifier is 40:4-6.

6. A composite waterproof membrane according to claim 4, characterized in that: The preparation method of the modified calcined filler comprises the following steps: dissolving the modifier in anhydrous ethanol, adding the calcined filler, dispersing evenly, and drying to obtain the modified calcined filler.

7. The composite waterproof membrane according to claim 1, characterized in that: The material of the upper carcass reinforcement layer and the lower carcass reinforcement layer is independently one of polyester cloth, polypropylene cloth and polyester cloth.

8. The composite waterproof membrane according to claim 1, characterized in that: The left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcing layer and the lower carcass reinforcing layer are each independently covered with a removable isolation film.

9. The composite waterproof membrane according to claim 1, characterized in that: The material of the polymer bonding layer is one or more of high-density polyethylene, EPDM rubber, and thermoplastic polyolefin; and / or The material of the polymer self-adhesive layer is one or two of styrene-butadiene-styrene block copolymer and styrene-isoprene-styrene block copolymer; and / or The tackifier includes one or more of terpene resin, rosin resin, and C5 resin.

10. A production process for a composite waterproofing membrane according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, mixing the components of the asphalt-based self-adhesive layer in parts by weight uniformly, and extruding to obtain an asphalt-based self-adhesive layer sheet; S2, covering the asphalt-based self-adhesive layer sheet and the polymer self-adhesive layer on the upper and lower surfaces of the polymer binding layer respectively, and rolling forming to form the main structural layer; S3. Cover the upper and lower surfaces of the main structural layer respectively in the order of upper carcass reinforcement layer, main structural layer and lower carcass reinforcement layer from top to bottom. After roll forming, independently set removable isolation films on the left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer. Then, mechanical pressing is used to make the left and right sides of the upper and lower surfaces of the main structural layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer into a corrugated structure to obtain the composite waterproof membrane.

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