A composite waterproof coiled material and its production process

Abstract

The present invention relates to the technical field of building waterproof materials, and provides a composite waterproof coiled material and its production process. The composite waterproof coiled material sequentially includes an upper carcass reinforcement layer, a main structure layer, and a lower carcass reinforcement layer from top to bottom. The main structure layer sequentially includes an asphalt-based self-adhesive layer, a polymer bonding layer, and a polymer self-adhesive layer from top to bottom. The widths of the upper carcass reinforcement layer and the lower carcass reinforcement layer are independently 25% to 50% of the width of the main structure layer. The parts on the left and right sides of the upper and lower surfaces of the main structure layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer adopt a corrugated structure. Through the above technical solution, the problems of poor tensile performance and poor aging resistance of waterproof coiled materials in the related art are solved.

Description

Technical Field

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

[0002] A waterproof coiled material is a flexible building material product that can be coiled into a roll shape, mainly used in places such as building walls, roofs, tunnels, and roads to play a role in resisting external rainwater and groundwater seepage. It is a key material for the leak-free connection between the engineering foundation and the building, and is the first barrier for the waterproofing of the entire project, playing a crucial role in the entire project.

[0003] However, the tensile strength of traditional waterproof coiled materials is relatively low, the anti-aging performance is relatively poor, the overall strength and toughness of the coiled material are limited, and when used outdoors for a long time, phenomena such as hardening, embrittlement, and cracking will occur. When subjected to large external force stretching, it is prone to fracture, and it is difficult to meet the requirements of some building parts with high waterproof requirements and large possible deformations. In addition, the existing waterproof coiled materials have poor adaptability to complex base surfaces, and there are problems such as large construction difficulty, poor bonding effect, and easy leakage at the joints in the application of complex structures. Therefore, providing a composite waterproof coiled material with excellent tensile performance, anti-aging performance and applicable to various complex base surfaces plays an important role in ensuring the lasting stability of building waterproof performance. Summary of the Invention

[0004] The present invention provides a composite waterproof coiled material and its production process, which solves the problems of poor tensile performance and poor anti-aging performance of waterproof coiled materials in related technologies.

[0005] The technical solution of the present invention is as follows:

[0006] The present invention provides a composite waterproof coiled material, which sequentially includes an upper carcass reinforcement layer, a main structure layer, and a lower carcass reinforcement layer from top to bottom. The main structure layer sequentially includes an asphalt-based self-adhesive layer, a polymer bonding layer, and a polymer self-adhesive layer from top to bottom;

[0007] The widths of the upper carcass reinforcement layer and the lower carcass reinforcement layer are independently 25% - 50% of the width of the main structure layer;

[0008] For the parts on the left and right sides of the upper and lower surfaces of the main structure layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer, a corrugated fold structure is adopted;

[0009] The asphalt-based self-adhesive layer includes the following components in parts by weight:

[0010] 45 to 65 parts of modified asphalt, 3 to 12 parts of styrene-butadiene-styrene block copolymer, 2 to 8 parts of styrene-isoprene-styrene block copolymer, 3 to 5 parts of styrene-butadiene rubber, 20 to 40 parts of filler, and 2 to 3 parts of tackifier;

[0011] The filler includes kaolin and manganese acetate;

[0012] The weight ratio of the kaolin to the manganese acetate is 1:4 to 9:1.

[0013] As a further technical solution, the weight ratio of the kaolin to the manganese acetate is 4 to 7:1.

[0014] When the weight ratio of the kaolin to the manganese acetate is 4 to 7:1, the mechanical properties and aging resistance of the composite waterproof coil can be further improved.

[0015] As a further technical solution, the filler is a calcined filler, and the preparation method of the calcined filler includes the following steps: mixing the kaolin and the manganese acetate evenly, calcining, and pulverizing to obtain the calcined filler.

[0016] After the kaolin and the manganese acetate are mixed evenly and then subjected to calcination treatment, the mechanical properties and aging resistance of the composite waterproof coil can be further improved.

[0017] As a further technical solution, when calcining, the temperature is 600 to 700 °C and the time is 2 to 3 h.

[0018] 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 with a weight ratio of 1:3.

[0019] When the modifier is 2-hydroxybenzothiazole and polyvinyl acetate, using the two to modify the calcined filler together can improve the dispersion degree of the calcined filler in the asphalt-based self-adhesive layer system, so that the calcined filler can better fill 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 coil.

[0020] As a further technical solution, the weight ratio of the calcined filler to the modifier is 40:3 to 6.

[0021] When the weight ratio of the calcined filler to the modifier is 40:4 to 6, the mechanical properties and aging resistance of the composite waterproof coil can be further improved.

[0022] As a further technical solution, the preparation method of the modified calcined filler comprises the following steps: dissolving the modifier in absolute ethanol, adding the calcined filler, dispersing evenly, and drying to obtain the modified calcined filler.

[0023] As a further technical solution, the materials of the upper carcass reinforcing layer and the lower upper carcass reinforcing layer are independently one of polyester cloth, polypropylene cloth, and polyester cloth.

[0024] As a further technical solution, on the left and right sides of the upper and lower surfaces of the main body structure layer that are not covered by the upper carcass reinforcing layer and the lower carcass reinforcing layer, removable isolation films are independently covered.

[0025] As a further technical solution, the isolation film is one of polyethylene film and polypropylene film.

[0026] As a further technical solution, the thickness of the isolation film is 0.005 - 0.01 mm.

[0027] As a further technical solution, the material of the polymer binding layer is one or more of high-density polyethylene, ethylene propylene diene monomer rubber, and thermoplastic polyolefin.

[0028] As a further technical solution, the thickness of the polymer binding layer is 0.01 - 0.03 mm.

[0029] 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.

[0030] As a further technical solution, the thickness of the polymer self-adhesive layer is 0.2 - 1 mm.

[0031] As a further technical solution, the tackifier includes one or more of terpene resin, rosin resin, and C5 resin.

[0032] As a further technical solution, the thickness of the main body structure layer is 0.5 - 3.0 mm.

[0033] As a further technical solution, the thicknesses of the upper carcass reinforcing layer and the lower carcass reinforcing layer are independently 0.2 - 0.6 mm.

[0034] The present invention also provides a production process of the composite waterproof coiled material, comprising the following steps:

[0035] S1. Mix the components of the asphalt-based self-adhesive layer in the above-mentioned weight parts evenly, and extrude to obtain an asphalt-based self-adhesive layer sheet.

[0036] S2. Cover the asphalt-based self-adhesive sheet and the polymer self-adhesive layer on the upper and lower surfaces of the polymer bonding layer respectively, and roll and form to form the main structural layer;

[0037] S3. In the order of the upper carcass reinforcement layer, the main structural layer, and the lower carcass reinforcement layer from top to bottom, cover the upper carcass reinforcement layer and the lower carcass reinforcement layer on the upper and lower surfaces of the main structural layer respectively. After rolling and forming, 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, removably set isolation films independently, and then through mechanical profiling, 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 fold structure to obtain the composite waterproof coiled material.

[0038] As a further technical solution, in step S1, when extruding, the temperature is 165 - 185 °C.

[0039] The working principle and beneficial effects of the present invention are as follows:

[0040] 1. In the present invention, the composite waterproof coiled material has a corrugated fold structure. This corrugated fold structure can increase the surface area and provide more contact points, so that the prepared composite waterproof coiled material can adhere more firmly to an uneven or curved base surface. And this unique corrugated fold can make the construction personnel more flexible and convenient during application, and can accurately and efficiently complete bonding even in a complex application environment.

[0041] 2. In the present invention, the asphalt-based self-adhesive layer in the composite waterproof coiled material uses SBS modified asphalt as the base material, combines styrene-butadiene-styrene block copolymer, styrene-isoprene-styrene block copolymer, styrene-butadiene rubber, filler, and tackifier to prepare an asphalt-based self-adhesive layer with a dense and stable internal structure, thereby improving the mechanical properties and aging resistance of the composite waterproof coiled material. Among them, the filler includes kaolin and manganese acetate. Through the synergistic compounding of the two, the mechanical properties and aging resistance of the composite waterproof coiled material can be significantly improved. Specific Embodiments

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0043] In the following examples and comparative examples, the type of SBS modified asphalt is SBS modified asphalt (I-C), purchased from Maoming Fuwei Chemical Co., Ltd.; the type of styrene-butadiene-styrene block copolymer is LG-501; the type of styrene-isoprene-styrene block copolymer is SIS D1114P; the type of styrene-butadiene rubber is D1124; the particle size of kaolin is 325 mesh; the content of manganese acetate is 99 wt%; the type of polyvinyl acetate is XH-018; the type of terpene resin is T100; the thickness of the main structure layer is 1.5 mm; the thickness of the polymer self-adhesive layer is 0.5 mm, and the material is styrene-butadiene-styrene block copolymer, with the type of LG-501; the thickness of the polymer bonding layer is 0.02 mm, and the material is ethylene propylene diene monomer rubber, with the type of MM-X109; the materials of the upper carcass reinforcement layer and the lower carcass reinforcement layer are 900D polyester cloth, and the thickness of both is 0.5 mm; the release film is a polyethylene film, with a thickness of 0.008 mm, and the polyethylene type is U-PE350.

[0044] Example 1

[0045] A composite waterproof coiled material, which sequentially includes an upper carcass reinforcement layer, a main structure layer, and a lower carcass reinforcement layer from top to bottom. The main structure layer sequentially includes an asphalt-based self-adhesive layer, a polymer bonding layer, and a polymer self-adhesive layer from top to bottom;

[0046] The widths of the upper carcass reinforcement layer and the lower carcass reinforcement layer are each independently 25% of the width of the main structure layer;

[0047] The parts on the left and right sides of the upper and lower surfaces of the main structure layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer adopt a corrugated fold structure;

[0048] The asphalt-based self-adhesive layer includes the following components in parts by weight:

[0049] 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;

[0050] The filler includes 4 parts of kaolin and 16 parts of manganese acetate;

[0051] The production process of the composite waterproof coiled material includes the following steps:

[0052] S1. Mix the components in parts by weight of the asphalt-based self-adhesive layer evenly and extrude to obtain an asphalt-based self-adhesive layer sheet;

[0053] Among them, during extrusion, the extrusion temperature in zone 1 is 165 °C, the extrusion temperature in zone 2 is 185 °C, and the extrusion temperature in zone 3 is 175 °C;

[0054] S2. Cover 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 roll and form to form the main structure layer;

[0055] S3. In the order of the upper carcass reinforcement layer, the main structure layer, and the lower carcass reinforcement layer from top to bottom, cover the upper carcass reinforcement layer and the lower carcass reinforcement layer on the upper and lower surfaces of the main structure layer respectively. After rolling and forming, set removable release films on the left and right sides of the upper and lower surfaces of the main structure layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer respectively, and then use mechanical profiling to make the left and right sides of the upper and lower surfaces of the main structure layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer into a corrugated fold structure to obtain the composite waterproof coil.

[0056] Example 2

[0057] A composite waterproof coil, which sequentially includes an upper carcass reinforcement layer, a main structure layer, and a lower carcass reinforcement layer from top to bottom. The main structure layer sequentially includes an asphalt-based self-adhesive layer, a polymer bonding layer, and a polymer self-adhesive layer from top to bottom;

[0058] The widths of the upper carcass reinforcement layer and the lower carcass reinforcement layer are each independently 50% of the width of the main structure layer;

[0059] The left and right sides of the upper and lower surfaces of the main structure layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer adopt a corrugated fold structure;

[0060] The asphalt-based self-adhesive layer includes the following components in parts by weight:

[0061] 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;

[0062] The filler includes 36 parts of kaolin and 4 parts of manganese acetate;

[0063] The production process of the composite waterproof coil includes the following steps:

[0064] S1. Mix the components in parts by weight of the asphalt-based self-adhesive layer evenly and extrude to obtain the asphalt-based self-adhesive layer sheet;

[0065] Among them, when extruding, the extrusion temperature of the first zone is 165 °C, the extrusion temperature of the second zone is 185 °C, and the extrusion temperature of the third zone is 175 °C;

[0066] S2. Cover 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 roll and form to form the main structure layer;

[0067] S3. In the order of the upper carcass reinforcement layer, the main structure layer, and the lower carcass reinforcement layer from top to bottom, the upper carcass reinforcement layer and the lower carcass reinforcement layer are respectively covered on the upper and lower surfaces of the main structure layer. After rolling and forming, removable release films are respectively arranged on the parts on the left and right sides of the upper and lower surfaces of the main structure layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer. Then, the parts on the left and right sides of the upper and lower surfaces of the main structure layer that are not covered by the upper carcass reinforcement layer and the lower carcass reinforcement layer are made into a corrugated fold structure through mechanical profiling to obtain a composite waterproof coiled material.

[0068] Example 3

[0069] The difference between this example and Example 2 is only that in this example, the filler includes 30 parts of kaolin and 10 parts of manganese acetate.

[0070] Example 4

[0071] The difference between this example and Example 2 is only that in this example, the filler includes 32 parts of kaolin and 8 parts of manganese acetate.

[0072] Example 5

[0073] The difference between this example and Example 2 is only that in this example, the filler includes 35 parts of kaolin and 5 parts of manganese acetate.

[0074] Example 6

[0075] The difference between this example and Example 5 is only that in this example, the filler is the calcined filler, and its preparation method includes the following steps: Mix 35 parts of kaolin and 5 parts of manganese acetate evenly, calcine at 650 °C for 2.5 h, and pulverize to obtain the calcined filler.

[0076] Example 7

[0077] The difference between this example and Example 5 is only that in this example, the filler is the modified filler, and its preparation method includes the following steps: Dissolve 8 parts of 2-hydroxybenzothiazole in 50 parts of absolute ethanol, then add 40 parts of filler (the weight ratio of kaolin to manganese acetate is 7:1), disperse evenly, and dry to obtain the modified filler.

[0078] Example 8

[0079] The difference between this example and Example 5 is only that in this example, the filler is the modified filler, and its preparation method includes the following steps: Dissolve 8 parts of polyvinyl acetate in 50 parts of absolute ethanol, then add 40 parts of filler (the weight ratio of kaolin to manganese acetate is 7:1), disperse evenly, and dry to obtain the modified filler.

[0080] Example 9

[0081] The difference between this embodiment and Embodiment 8 is only that in this embodiment, the filler is the filler after modification and calcination, and its preparation method includes the following steps:

[0082] A1. Mix 35 parts of kaolin and 5 parts of manganese acetate evenly, calcine at 650 °C for 2.5 h, and pulverize to obtain the calcined filler;

[0083] A2. Dissolve 8 parts of 2-hydroxybenzothiazole in 50 parts of absolute ethanol, then add the above-mentioned calcined filler, disperse evenly, and dry to obtain the modified and calcined filler.

[0084] Embodiment 10

[0085] The difference between this embodiment and Embodiment 9 is only that in this embodiment, 2-hydroxybenzothiazole is replaced with an equal amount of polyvinyl acetate.

[0086] Embodiment 11

[0087] The difference between this embodiment and Embodiment 10 is only that in this embodiment, the filler is the modified filler, and its preparation method includes the following steps: Dissolve 2 parts of 2-hydroxybenzothiazole and 6 parts of polyvinyl acetate in 50 parts of absolute ethanol, then add 40 parts of filler (the weight ratio of kaolin to manganese acetate is 7:1), disperse evenly, and dry to obtain the modified filler.

[0088] Embodiment 12

[0089] The difference between this embodiment and Embodiment 11 is only that in this embodiment, the filler is the filler after modification and calcination, and its preparation method includes the following steps:

[0090] A1. Mix 35 parts of kaolin and 5 parts of manganese acetate evenly, calcine at 650 °C for 2.5 h, and pulverize to obtain the calcined filler;

[0091] A2. Dissolve 2 parts of 2-hydroxybenzothiazole and 6 parts of polyvinyl acetate in 50 parts of absolute ethanol, then add the above-mentioned calcined filler, disperse evenly, and dry to obtain the modified and calcined filler.

[0092] Embodiment 13

[0093] The difference between this embodiment and Embodiment 12 is only that in this embodiment, the added 2-hydroxybenzothiazole is 0.25 part, and the added polyvinyl acetate is 0.75 part.

[0094] Embodiment 14

[0095] The difference between this embodiment and Embodiment 12 is only that in this embodiment, the added 2-hydroxybenzothiazole is 1 part, and the added polyvinyl acetate is 3 parts.

[0096] Example 15

[0097] The difference between this example and Example 12 is only that in this example, 1.5 parts of 2-hydroxybenzothiazole and 4.5 parts of polyvinyl acetate are added.

[0098] Comparative Example 1

[0099] The difference between this comparative example and Example 1 is only that in this comparative example, the filler only includes 20 parts of kaolin.

[0100] Comparative Example 2

[0101] The difference between this comparative example and Example 1 is only that in this comparative example, the filler only includes 20 parts of manganese acetate.

[0102] Comparative Example 3

[0103] The difference between this comparative example and Example 1 is only that in this comparative example, no filler is added.

[0104] The composite waterproof coiled materials 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 Coiled Materials":

[0105] ① Tensile property test: The longitudinal maximum tensile force and transverse maximum tensile force of the composite waterproof coiled material specimens prepared in Examples 1 to 15 and Comparative Examples 1 to 3 were tested. Among them, the test results of the longitudinal maximum tensile force and the transverse maximum tensile force were both the averages of 5 specimens;

[0106] ② Aging resistance property test: After the composite waterproof coiled material specimens prepared in Examples 1 to 15 and Comparative Examples 1 to 3 were subjected to the aging resistance test, the tensile force test after the aging resistance test was carried out in accordance with the tensile force test method in GB / T 23457-2017 "Pre-laid Waterproof Coiled Materials". The tensile force retention rate was calculated according to the following formula: Tensile force retention rate (%) = Tensile force after aging resistance test / Tensile force before aging resistance test × 100%. Among them, in the aging resistance test, the temperature was 80 °C and the time was 168 h.

[0107] The test results are shown in Table 1 below:

[0108] Table 1 Performance test results of the composite waterproof coiled materials in Examples 1 to 15 and Comparative Examples 1 to 3

[0109]

[0110] Compared with Comparative Examples 1 to 3, the longitudinal maximum tensile force and transverse maximum tensile force of Example 1 are significantly increased, and the change rate of the aging-resistant tensile strength is significantly decreased, indicating that when kaolin and manganese acetate are included in the asphalt-based self-adhesive layer of the composite waterproof coil, the two have a synergistic effect, which can significantly improve the mechanical properties and aging resistance of the composite waterproof coil.

[0111] Compared with Examples 2 to 3, the longitudinal maximum tensile force and transverse maximum tensile force of Examples 4 to 5 are increased, and the change rate of the aging-resistant tensile strength is decreased, indicating that when the weight ratio of kaolin to manganese acetate is 4 to 7:1, the mechanical properties and aging resistance of the composite waterproof coil can be further improved.

[0112] Compared with Example 5, the longitudinal maximum tensile force and transverse maximum tensile force of Example 6 are increased, and the change rate of the aging-resistant tensile strength is decreased, indicating that after uniformly mixing kaolin and manganese acetate and then performing calcination treatment, the mechanical properties and aging resistance of the composite waterproof coil can be further improved.

[0113] Compared with Examples 6 to 10, the longitudinal maximum tensile force and transverse maximum tensile force of Examples 12 to 15 are increased, and the change rate of the aging-resistant tensile strength is decreased, indicating that after calcining the filler and then using 2-hydroxybenzothiazole and polyvinyl acetate to jointly modify the filler, the mechanical properties and aging resistance of the composite waterproof coil can be further improved.

[0114] Compared with Examples 12 to 13, the longitudinal maximum tensile force and transverse maximum tensile force of Examples 14 to 15 are increased, and the change rate of the aging-resistant tensile strength is decreased, indicating that when the weight ratio of the calcined filler to the modifier is 40:3 to 6, the mechanical properties and aging resistance of the composite waterproof coil can be further improved.

[0115] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall 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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