Three-tire-base double-prefabricated double-occlusion lap joint waterproof coiled material

Abstract

The invention relates to the technical field of waterproof coiled materials, and provides a three-tire-base double-prefabricated double-occlusion lap joint waterproof coiled material. The membrane comprises a first isolating membrane, a first osmotic reaction adhesive layer, a first polymeric membrane base layer, a second osmotic reaction adhesive layer, a second polymeric membrane base layer, a third osmotic reaction adhesive layer, a third polymeric membrane base layer, a fourth osmotic reaction adhesive layer and a surface layer consisting of a second isolating membrane and an anti-sticking layer from bottom to top, a first lap joint opening and a second lap joint opening are formed in the two sides of the joint of the second permeable reaction adhesive layer and the third permeable reaction adhesive layer, one end of the second polymeric membrane base layer extends into the first lap joint opening, the second isolating membrane and the first lap joint opening are located on the two sides of the anti-sticking layer, and the other end of the second polymeric membrane base layer extends into the second lap joint opening; a third isolating membrane and a fourth isolating membrane are arranged on the inner wall of the first lap joint opening, and a fifth isolating membrane and a sixth isolating membrane are arranged on the inner wall of the second lap joint opening, so that the peel strength and the adhesiveness of the lap joint edge of the waterproof roll are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof coiled materials, and in particular to a triple-base double-track prefabricated double-occlusal overlap waterproof coiled material. Background Art

[0002] Waterproof membrane is one of the important types of building waterproof materials, including elastomer-modified asphalt waterproof membrane, plastomer-modified asphalt waterproof membrane, pre-laid waterproof membrane, wet-laid waterproof membrane, self-adhesive polymer-modified asphalt waterproof membrane, polymer waterproof sheet, polyvinyl chloride waterproof membrane, etc. It plays an important role in building waterproofing projects and is mainly used in building walls, roofs, tunnels, roads, landfills, etc. to prevent external rainwater and groundwater leakage.

[0003] The Chinese invention patent with publication number CN118755399A discloses a three-base double-pass prefabricated bite overlap waterproof membrane, which includes, from bottom to top, a first isolation membrane, a first permeable reaction adhesive layer, a first polymer membrane base layer, a second permeable reaction adhesive layer, a second polymer membrane base layer, a third permeable reaction adhesive layer, a third polymer membrane base layer, a fourth permeable reaction adhesive layer and a surface layer. The surface layer is formed by connecting the second isolation membrane and the anti-sticking layer. An overlap interface is set at the second permeable reaction adhesive layer and the third permeable reaction adhesive layer. One end of the second polymer membrane base layer extends into the overlap interface. The second isolation membrane and the overlap interface are respectively located at the bottom and the bottom. On both sides of the anti-adhesive layer, a third isolation film and a fourth isolation film are provided on the inner wall of the overlap. This invention patent arranges a second polymer film base layer between the second permeable reactive adhesive layer and the third permeable reactive adhesive layer, and uses three polymer film bases to divide the permeable reactive adhesive layer into four areas, which serve as four permeable reactive adhesive layers. At the same time, one end of the second polymer film base layer extends into the overlap, isolating the upper and lower layers of the overlap. This prevents the adhesive layer at the overlap interface of the waterproof membrane from sticking the third and fourth isolation films together during the actual production process, making the third and fourth isolation films easy to tear off without excess glue remaining. However, in the actual construction process, when the waterproof membrane is overlapped, there are certain problems of low peel strength and poor adhesion at the overlap edge. Summary of the Invention

[0004] The present invention provides a triple-base double-track prefabricated double-bite overlapping waterproof membrane, which solves the problems of low peeling strength and poor adhesion of overlapping edges of waterproof membranes in the related art.

[0005] The technical solutions of the present invention are as follows: A three-base double-channel prefabricated double-bite overlap waterproof membrane, which includes, from bottom to top, a first isolation membrane, a first permeable reactive adhesive layer, a first polymer membrane base layer, a second permeable reactive adhesive layer, a second polymer membrane base layer, a third permeable reactive adhesive layer, a third polymer membrane base layer, a fourth permeable reactive adhesive layer and a surface layer, wherein the surface layer is formed by connecting the second isolation membrane and the anti-sticking layer; a first overlap interface and a second overlap interface are respectively provided on both sides of the connection between the second permeable reactive adhesive layer and the third permeable reactive adhesive layer, one end of the second polymer membrane base layer extends into the first overlap interface, the second isolation membrane and the first overlap interface are respectively located on both sides of the anti-sticking layer, the other end of the second polymer membrane base layer extends into the second overlap interface, the inner wall of the first overlap interface is provided with a third isolation membrane and a fourth isolation membrane, and the inner wall of the second overlap interface is provided with a fifth isolation membrane and a sixth isolation membrane.

[0006] As a further technical solution, the third isolation membrane is located on the upper surface of the inner wall of the first overlap interface, the fourth isolation membrane is located on the lower surface of the inner wall of the first overlap interface, the fifth isolation membrane is located on the upper surface of the inner wall of the second overlap interface, and the sixth isolation membrane is located on the lower surface of the inner wall of the second overlap interface.

[0007] As a further technical solution, the raw materials of the first permeable reactive adhesive layer, the second permeable reactive adhesive layer, the third permeable reactive adhesive layer and the fourth permeable reactive adhesive layer independently include the following components in parts by mass: 30-40 parts of asphalt, 5-15 parts of SBS, 1-3 parts of carboxylated styrene-butadiene rubber, 2-5 parts of tackifier, 3-8 parts of plasticizer, 0.1-1 part of antioxidant, and 25-45 parts of filler; the SBS includes star-structured SBS and linear-structured SBS in a mass ratio of 1:9-9:1.

[0008] The adhesive layer of the present invention's three-layer, double-coat, prefabricated, double-interlocking lap-jointed waterproof membrane utilizes asphalt as its base component, providing excellent initial adhesion and an overall bonding matrix. The addition of SBS (styrene-butadiene-styrene block copolymer) and carboxylated styrene-butadiene rubber further improves the adhesive layer's flexibility and ductility, enabling it to adhere closely to the remaining layers and enhancing its bond strength and adhesion to the underlying surface, ensuring that the adhesive layer resists detachment and peeling during long-term use. The addition of a tackifier ensures that the adhesive layer maintains excellent bonding properties even in challenging environments such as humidity and low temperatures. The addition of a plasticizer not only improves the adhesive layer's flexibility and ductility, but also prevents it from hardening and cracking at low temperatures and softening and flowing at high temperatures. The addition of a filler not only reduces production costs but also adjusts the adhesive layer's hardness and stiffness, enhancing its wear resistance and impact resistance, and extending its service life. The addition of antioxidants effectively inhibits the degradation of the adhesive layer due to oxidation reactions during long-term use, slowing the aging process and maintaining the stability of the adhesive layer's physical and bonding properties. Furthermore, the combination of star-shaped SBS and linear-shaped SBS improves the tensile properties of the waterproof membrane.

[0009] In the adhesive layer of the triple-base double-track prefabricated double-interlocking lap-jointed waterproof membrane of the present invention, the star-shaped structure SBS can be any one or more brands of SBS with a star structure, for example, the brand can be YH-801, YH-802, preferably YH-801; the linear structure SBS can be any one or more brands of SBS with a linear structure, for example, the brand can be YH-791, YH-792, YH-795, preferably YH-795.

[0010] As a further technical solution, the preparation methods of the first permeation reaction adhesive layer, the second permeation reaction adhesive layer, the third permeation reaction adhesive layer and the fourth permeation reaction adhesive layer independently include the following steps: heating the asphalt to 180~190℃, mixing it evenly with carboxylated styrene-butadiene rubber, SBS and filler, cooling it to 135~140℃, adding the remaining components and mixing.

[0011] During the preparation of the adhesive layer of the triple-base double-track prefabricated double-interlocking lap-jointed waterproof membrane of the present invention, the asphalt is first heated to 180-190°C. Within this temperature range, the asphalt can be in a molten flow state and can be fully mixed with carboxylated styrene-butadiene rubber, SBS, and filler. The remaining components are then added after the temperature is lowered to 135-140°C. This can effectively prevent high temperature from damaging the performance of various functional additives, thereby ensuring that various functional additives can fully play their role.

[0012] As a further technical solution, the raw materials also include 1 to 10 parts of a compound containing an aromatic ring, an alkyl chain and an ether group, for example, 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, etc., preferably 3 to 6 parts.

[0013] The addition of a compound containing an aromatic ring, an alkyl chain, and an ether group to the adhesive layer of the present invention's three-ply, double-pass prefabricated, double-interlocking lap-jointed waterproof membrane further improves the membrane's tensile properties. This is because the compound containing an aromatic ring, an alkyl chain, and an ether group acts as a compatibilizer. Asphalt is primarily a mixture of long-chain hydrocarbon compounds containing a high carbon content, including saturated and aromatic hydrocarbons. SBS is a ternary block copolymer of styrene-butadiene-styrene. The carboxyl groups in carboxylated styrene-butadiene rubber are highly polar, and their introduction results in poor compatibility with the asphalt and SBS in the adhesive layer. The addition of the compound containing an aromatic ring, an alkyl chain, and an ether group further improves the membrane's tensile properties by increasing the compatibilization between the adhesive layer components, due to the ether groups' inability to form hydrogen bonds, their low polarity, and the ability of the oxygen on the ether group to form hydrogen bonds with the hydrogen on the carboxyl group. Furthermore, the aromatic ring portion exhibits good compatibility with the aromatic hydrocarbon portion of the asphalt, and the alkyl chain portion exhibits good compatibility with the saturated hydrocarbon portion of the asphalt. This improves the compatibilization between the adhesive layer components, ultimately improving the membrane's tensile properties.

[0014] As a further technical solution, the mass ratio of the asphalt, SBS and carboxylated styrene-butadiene rubber to the compound containing an aromatic ring, an alkyl chain and an ether group is 58:3-6.

[0015] In the adhesive layer of the three-base double-channel prefabricated double-bite overlap waterproof membrane of the present invention, the compound containing an aromatic ring, an alkyl chain and an ether group can be any one or more compounds containing an aromatic ring, an alkyl chain and an ether group, for example, it can be one or two of 2-octadecyl-1,4-dimethoxybenzene and 4-n-octadecyloxybiphenyl, preferably 4-n-octadecyloxybiphenyl.

[0016] In the adhesive layer of the three-base double-track prefabricated double-bite overlap waterproof membrane of the present invention, the tackifier can be any one or more tackifiers in the field, preferably one or both of petroleum resin and rosin resin; the plasticizer can be any one or more plasticizers in the field, preferably one or both of dibutyl phthalate and dioctyl phthalate; the antioxidant can be any one or more antioxidants in the field, preferably one or both of antioxidant 1010 and antioxidant 168; the filler can be any one or more fillers in the field, preferably one or more of talc, carbon black, and heavy calcium powder.

[0017] In the three-base double-channel prefabricated double-interlocking overlapping waterproof membrane of the present invention, the length of the first overlapping joint and the second overlapping joint can be any length in the field, as long as the sum of the lengths of the first overlapping joint and the second overlapping joint is less than the length of the membrane itself. Preferably, the lengths of the first overlapping joint and the second overlapping joint are each independently 60~100mm; for example, it can be 60mm, 70mm, 80mm, 90mm, 100mm, etc.

[0018] In the three-base double-channel prefabricated double-interlocking overlapping waterproof membrane of the present invention, the length extending into the first overlapping interface can be any length in the art, preferably 2~100mm, for example, it can be 2mm, 5mm, 7mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, etc.

[0019] In the three-base double-channel prefabricated double-interlocking overlapping waterproof membrane of the present invention, the length extending into the second overlapping interface can be any length in the art, preferably 2~100mm, for example, it can be 2mm, 5mm, 7mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, etc.

[0020] In the three-base double-channel prefabricated double-bite overlap waterproof membrane of the present invention, the thickness of the first isolation membrane, the second isolation membrane, the third isolation membrane, the fourth isolation membrane, the fifth isolation membrane and the sixth isolation membrane can be any thickness in the art, preferably each independently 0.035~0.070mm, for example, it can be 0.035mm, 0.040mm, 0.045mm, 0.050mm, 0.055mm, 0.060mm, 0.065mm, 0.070mm, etc.

[0021] In the three-base double-channel prefabricated double-bite overlap waterproof membrane of the present invention, the first isolation membrane, the second isolation membrane, the third isolation membrane, the fourth isolation membrane, the fifth isolation membrane and the sixth isolation membrane can be isolation membranes of any material in the field, for example, they can be one of PP film, PE film, PVC film, PI film, TPU film, PC film, TPO film, EPDM film, TPE film, TPEE film, PEEK film, PET film, PEN film, CNF film, and PHA film.

[0022] In the three-base double-channel prefabricated double-interlocking overlap waterproof membrane of the present invention, the thickness of the first polymer membrane base layer, the second polymer membrane base layer, and the third polymer membrane base layer can be any thickness in the art, preferably each independently 0.1~0.15mm, for example, it can be 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, etc.

[0023] In the three-base double-channel prefabricated double-interlocking overlap waterproof membrane of the present invention, the first polymer film base layer, the second polymer film base layer, and the third polymer film base layer can be polymer films of any material in the field, for example, they can be one of PP film, PE film, PVC film, PI film, TPU film, PC film, TPO film, EPDM film, TPE film, TPEE film, PEEK film, PET film, PEN film, CNF film, and PHA film.

[0024] As a further technical solution, the raw material of the anti-sticking layer includes one of polymer film, mineral sand, natural sand, and recycled concrete sand.

[0025] As a further technical solution, when the raw material of the anti-sticking layer includes a polymer film, the polymer film can be any polymer film in the art, for example, it can be one of PP film, PE film, PVC film, PI film, TPU film, PC film, TPO film, EPDM film, TPE film, TPEE film, PEEK film, PET film, PEN film, CNF film, and PHA film.

[0026] As a further technical solution, when the raw material of the anti-sticking layer includes natural sand, the natural sand includes one or more of river sand, lake sand, and desert sand.

[0027] As a further technical solution, when the raw material of the anti-sticking layer includes mineral sand, the mineral sand includes one or more of quartz sand, mullite sand, and sintered sand.

[0028] The working principle and beneficial effects of the present invention are: The present invention provides a three-base double-pass prefabricated double-bite overlap waterproof membrane, which realizes a "double-bite" structure by respectively providing a first overlap interface and a second overlap interface on both sides of the junction of the second permeable reaction adhesive layer and the third permeable reaction adhesive layer. When the waterproof membrane is overlapped, taking the overlap of two membranes as an example, the first isolation film, the second isolation film, the fifth isolation film and the sixth isolation film of the No. 1 membrane are peeled off, and the first isolation film, the third isolation film and the fourth isolation film of the No. 2 membrane are peeled off. Then, the membrane part above the overlap interface of the No. 1 membrane is extended into the overlap interface of the No. 2 membrane, and the membrane part below the overlap interface of the No. 2 membrane is extended into the overlap interface of the No. 1 membrane, as shown in FIG. Figure 2 As shown, an "S-shaped" overlap surface is formed, which improves the peeling index between the membranes and ensures the waterproof performance of the overlap interface of the waterproof membrane by increasing the water penetration path. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Figure 1 This is a schematic structural diagram of the waterproof membrane of the present invention; In the figure: 1 is the first isolation membrane, 2 is the first permeable reaction adhesive layer, 3 is the first polymer membrane base layer, 4 is the second permeable reaction adhesive layer, 5 is the second polymer membrane base layer, 6 is the third permeable reaction adhesive layer, 7 is the third polymer membrane base layer, 8 is the fourth permeable reaction adhesive layer, 9 is the anti-sticking layer, 10 is the second isolation membrane, 11 is the fifth isolation membrane, 12 is the sixth isolation membrane, 13 is the third isolation membrane, and 14 is the fourth isolation membrane.

[0031] Figure 2 It is a schematic diagram of the structure of the waterproof membrane of the present invention when it is overlapped. DETAILED DESCRIPTION

[0032] 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 embodiments described 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 making any creative efforts are within the scope of protection of the present invention.

[0033] The parameters of the raw materials in the following examples and comparative examples are as follows: The brand of star-shaped SBS is YH-801; The brand of linear structure SBS is YH-795; Asphalt is 90# asphalt; Carboxylated styrene butadiene rubber is an ultrafine powder of carboxylated styrene butadiene rubber, brand Narpow VP201, purchased from Beijing Beihuayan Company, affiliated to Beijing Research Institute of Chemical Industry of Sinopec. The petroleum resin is petroleum resin C9; The rosin resin is 424 rosin resin; The talc powder contains 60wt% silicon dioxide and 15wt% magnesium oxide, with a particle size of 400 mesh. The carbon black is carbon black N330; Heavy calcium carbonate powder is a 400-mesh heavy calcium carbonate powder.

[0034] Example 1 A three-base, double-layer prefabricated, double-occlusal overlap waterproof membrane comprises, from bottom to top, a first barrier membrane, a first permeable reactive adhesive layer, a first polymer membrane base layer, a second permeable reactive adhesive layer, a second polymer membrane base layer, a third permeable reactive adhesive layer, a third polymer membrane base layer, a fourth permeable reactive adhesive layer, and a surface layer, wherein the surface layer is formed by connecting the second barrier membrane and the anti-adhesive layer; a first overlap joint with a length of 100 mm and a second overlap joint with a length of 100 mm are provided on both sides of the junction of the second permeable reactive adhesive layer and the third permeable reactive adhesive layer; one end of the second polymer membrane base layer extends 50 mm from the first overlap joint; the second barrier membrane and the first overlap joint are respectively located on both sides of the anti-adhesive layer; the other end of the second polymer membrane base layer extends 50 mm from the second overlap joint; the third barrier membrane is provided on the upper surface of the inner wall of the first overlap joint, and the fourth barrier membrane is provided on the lower surface; the fifth barrier membrane is provided on the upper surface of the inner wall of the second overlap joint, and the sixth barrier membrane is provided on the lower surface; The first isolation film, the second isolation film, the third isolation film, the fourth isolation film, the fifth isolation film and the sixth isolation film are all PE films with a thickness of 0.05 mm; The first polymer film base layer, the second polymer film base layer, and the third polymer film base layer are all PET films with a thickness of 0.15 mm; The anti-sticking layer is a PE film with a thickness of 0.05 mm; The first osmotic reaction adhesive layer, the second osmotic reaction adhesive layer, the third osmotic reaction adhesive layer and the fourth osmotic reaction adhesive layer are all prepared by the following method: after heating 40 parts of asphalt to 185° C., mixing them evenly with 3 parts of carboxylated styrene-butadiene rubber, 15 parts of star-shaped SBS, 20 parts of talc powder and 25 parts of heavy calcium powder, cooling them to 140° C., adding 5 parts of petroleum resin, 3 parts of dibutyl phthalate and 1 part of antioxidant 1010 and mixing them evenly, the obtained layer is obtained.

[0035] Example 2 A three-base, double-layer prefabricated, double-occlusal overlap waterproof membrane comprises, from bottom to top, a first barrier membrane, a first permeable reactive adhesive layer, a first polymer membrane base layer, a second permeable reactive adhesive layer, a second polymer membrane base layer, a third permeable reactive adhesive layer, a third polymer membrane base layer, a fourth permeable reactive adhesive layer, and a surface layer, wherein the surface layer is formed by connecting the second barrier membrane and the anti-adhesive layer; a first overlap joint with a length of 100 mm and a second overlap joint with a length of 100 mm are provided on both sides of the junction of the second permeable reactive adhesive layer and the third permeable reactive adhesive layer; one end of the second polymer membrane base layer extends 50 mm from the first overlap joint; the second barrier membrane and the first overlap joint are respectively located on both sides of the anti-adhesive layer; the other end of the second polymer membrane base layer extends 50 mm from the second overlap joint; the third barrier membrane is provided on the upper surface of the inner wall of the first overlap joint, and the fourth barrier membrane is provided on the lower surface; the fifth barrier membrane is provided on the upper surface of the inner wall of the second overlap joint, and the sixth barrier membrane is provided on the lower surface; The first isolation film, the second isolation film, the third isolation film, the fourth isolation film, the fifth isolation film and the sixth isolation film are all PE films with a thickness of 0.05 mm; The first polymer film base layer, the second polymer film base layer, and the third polymer film base layer are all PET films with a thickness of 0.15 mm; The anti-sticking layer is a PE film with a thickness of 0.05 mm; The first osmotic reaction adhesive layer, the second osmotic reaction adhesive layer, the third osmotic reaction adhesive layer and the fourth osmotic reaction adhesive layer are all prepared by the following method: after heating 40 parts of asphalt to 185° C., mixing them evenly with 3 parts of carboxylated styrene-butadiene rubber, 15 parts of linear structure SBS, 20 parts of talc powder and 25 parts of heavy calcium powder, cooling them to 140° C., adding 5 parts of petroleum resin, 3 parts of dibutyl phthalate and 1 part of antioxidant 1010 and mixing them evenly, the obtained layer is obtained.

[0036] Example 3 A three-base, double-layer prefabricated, double-occlusal overlap waterproof membrane comprises, from bottom to top, a first barrier membrane, a first permeable reactive adhesive layer, a first polymer membrane base layer, a second permeable reactive adhesive layer, a second polymer membrane base layer, a third permeable reactive adhesive layer, a third polymer membrane base layer, a fourth permeable reactive adhesive layer, and a surface layer, wherein the surface layer is formed by connecting the second barrier membrane and the anti-adhesive layer; a first overlap joint with a length of 100 mm and a second overlap joint with a length of 100 mm are provided on both sides of the junction of the second permeable reactive adhesive layer and the third permeable reactive adhesive layer; one end of the second polymer membrane base layer extends 50 mm from the first overlap joint; the second barrier membrane and the first overlap joint are respectively located on both sides of the anti-adhesive layer; the other end of the second polymer membrane base layer extends 50 mm from the second overlap joint; the third barrier membrane is provided on the upper surface of the inner wall of the first overlap joint, and the fourth barrier membrane is provided on the lower surface; the fifth barrier membrane is provided on the upper surface of the inner wall of the second overlap joint, and the sixth barrier membrane is provided on the lower surface; The first isolation film, the second isolation film, the third isolation film, the fourth isolation film, the fifth isolation film and the sixth isolation film are all PE films with a thickness of 0.05 mm; The first polymer film base layer, the second polymer film base layer, and the third polymer film base layer are all PET films with a thickness of 0.15 mm; The anti-sticking layer is a PE film with a thickness of 0.05 mm; The first permeation reaction adhesive layer, the second permeation reaction adhesive layer, the third permeation reaction adhesive layer and the fourth permeation reaction adhesive layer are all prepared by the following method: after heating 40 parts of asphalt to 185°C, mixing them evenly with 3 parts of carboxylated styrene-butadiene rubber, 15 parts of SBS (composed of star-shaped structure SBS and linear structure SBS with a mass ratio of 1:9), 20 parts of talcum powder and 25 parts of heavy calcium powder, cooling them to 140°C, adding 5 parts of petroleum resin, 3 parts of dibutyl phthalate and 1 part of antioxidant 1010 and mixing them until uniform, the obtained layer is obtained.

[0037] Example 4 A three-base, double-layer prefabricated, double-occlusal overlapping waterproof membrane comprises, from bottom to top, a first insulating membrane, a first permeable reactive adhesive layer, a first polymer membrane base layer, a second permeable reactive adhesive layer, a second polymer membrane base layer, a third permeable reactive adhesive layer, a third polymer membrane base layer, a fourth permeable reactive adhesive layer, and a surface layer, wherein the surface layer is formed by connecting the second insulating membrane and the anti-adhesive layer; a first overlapping interface with a length of 60 mm and a second overlapping interface with a length of 60 mm are provided on both sides of the connection between the second permeable reactive adhesive layer and the third permeable reactive adhesive layer; one end of the second polymer membrane base layer extends into the first overlapping interface by a length of 20 mm; the second insulating membrane and the first overlapping interface are respectively located on both sides of the anti-adhesive layer; the other end of the second polymer membrane base layer extends into the second overlapping interface by a length of 30 mm; the upper surface of the inner wall of the first overlapping interface is provided with a third insulating membrane, and the lower surface is provided with a fourth insulating membrane; the upper surface of the inner wall of the second overlapping interface is provided with a fifth insulating membrane, and the lower surface is provided with a sixth insulating membrane; The first isolation film, the second isolation film, the third isolation film, the fourth isolation film, the fifth isolation film and the sixth isolation film are all PP films with a thickness of 0.07 mm; The first polymer film base layer, the second polymer film base layer, and the third polymer film base layer are all PET films with a thickness of 0.1 mm; The anti-sticking layer is a PP film with a thickness of 0.07 mm; The first permeation reaction adhesive layer, the second permeation reaction adhesive layer, the third permeation reaction adhesive layer and the fourth permeation reaction adhesive layer are all prepared by the following method: 30 parts of asphalt are heated to 185° C., and then uniformly mixed with 1 part of carboxylated styrene-butadiene rubber, 5 parts of SBS (composed of star-shaped structure SBS and linear structure SBS with a mass ratio of 9:1), 15 parts of talc powder and 10 parts of carbon black; then the mixture is cooled to 135° C., and 2 parts of rosin resin, 8 parts of dioctyl phthalate and 0.1 part of antioxidant 168 are added and mixed until uniformly mixed to obtain the product.

[0038] Example 5 The only difference from Example 3 is that: The first permeation reaction adhesive layer, the second permeation reaction adhesive layer, the third permeation reaction adhesive layer and the fourth permeation reaction adhesive layer are all prepared by the following method: after heating 40 parts of asphalt to 185°C, mixing them evenly with 3 parts of carboxylated styrene-butadiene rubber, 15 parts of SBS (composed of star-shaped structure SBS and linear structure SBS with a mass ratio of 1:9), 20 parts of talcum powder and 25 parts of heavy calcium powder, cooling them to 140°C, adding 1 part of 4-n-octadecyloxybiphenyl, 5 parts of petroleum resin, 3 parts of dibutyl phthalate and 1 part of antioxidant 1010 and mixing them until uniform, the obtained adhesive is obtained.

[0039] Example 6 The only difference from Example 3 is that: The first permeation reaction adhesive layer, the second permeation reaction adhesive layer, the third permeation reaction adhesive layer and the fourth permeation reaction adhesive layer are all prepared by the following method: after heating 40 parts of asphalt to 185°C, mixing them evenly with 3 parts of carboxylated styrene-butadiene rubber, 15 parts of SBS (composed of star-shaped structure SBS and linear structure SBS with a mass ratio of 1:9), 20 parts of talcum powder and 25 parts of heavy calcium powder, cooling them to 140°C, adding 3 parts of 4-n-octadecyloxybiphenyl, 5 parts of petroleum resin, 3 parts of dibutyl phthalate and 1 part of antioxidant 1010 and mixing them until uniform, the obtained adhesive is obtained.

[0040] Example 7 The only difference from Example 3 is that: The first permeation reaction adhesive layer, the second permeation reaction adhesive layer, the third permeation reaction adhesive layer and the fourth permeation reaction adhesive layer are all prepared by the following method: after heating 40 parts of asphalt to 185°C, mixing them evenly with 3 parts of carboxylated styrene-butadiene rubber, 15 parts of SBS (composed of star-shaped structure SBS and linear structure SBS with a mass ratio of 1:9), 20 parts of talcum powder and 25 parts of heavy calcium powder, cooling them to 140°C, adding 6 parts of 4-n-octadecyloxybiphenyl, 5 parts of petroleum resin, 3 parts of dibutyl phthalate and 1 part of antioxidant 1010 and mixing them until uniform, the obtained adhesive is obtained.

[0041] Example 8 The only difference from Example 3 is that: The first permeation reaction adhesive layer, the second permeation reaction adhesive layer, the third permeation reaction adhesive layer and the fourth permeation reaction adhesive layer are all prepared by the following method: after heating 40 parts of asphalt to 185°C, mixing them evenly with 3 parts of carboxylated styrene-butadiene rubber, 15 parts of SBS (composed of star-shaped structure SBS and linear structure SBS with a mass ratio of 1:9), 20 parts of talcum powder and 25 parts of heavy calcium powder, cooling them to 140°C, adding 10 parts of 4-n-octadecyloxybiphenyl, 5 parts of petroleum resin, 3 parts of dibutyl phthalate and 1 part of antioxidant 1010 and mixing them until uniform, the obtained adhesive is obtained.

[0042] Comparative Example 1 A three-base, double-layer prefabricated, double-occlusal overlap waterproof membrane comprises, from bottom to top, a first barrier membrane, a first osmotic reactive adhesive layer, a first polymer membrane base layer, a second osmotic reactive adhesive layer, a second polymer membrane base layer, a third osmotic reactive adhesive layer, a third polymer membrane base layer, a fourth osmotic reactive adhesive layer, and a surface layer. The surface layer is formed by connecting the second barrier membrane and the anti-adhesion layer. A 100mm-long overlap joint is provided on one side of the junction between the second and third osmotic reactive adhesive layers. One end of the second polymer membrane base layer extends 50mm into the overlap joint. The second barrier membrane and the overlap joint are respectively located on either side of the anti-adhesion layer. The upper surface of the inner wall of the overlap joint is provided with the third barrier membrane, and the lower surface is provided with the fourth barrier membrane. The first isolation film, the second isolation film, the third isolation film, and the fourth isolation film are all PE films with a thickness of 0.05 mm; The first polymer film base layer, the second polymer film base layer, and the third polymer film base layer are all PET films with a thickness of 0.15 mm; The anti-sticking layer is a PE film with a thickness of 0.05 mm; The first osmotic reaction adhesive layer, the second osmotic reaction adhesive layer, the third osmotic reaction adhesive layer and the fourth osmotic reaction adhesive layer are all prepared by the following method: after heating 40 parts of asphalt to 185° C., mixing them evenly with 3 parts of carboxylated styrene-butadiene rubber, 15 parts of linear structure SBS, 20 parts of talc powder and 25 parts of heavy calcium powder, cooling them to 140° C., adding 5 parts of petroleum resin, 3 parts of dibutyl phthalate and 1 part of antioxidant 1010 and mixing them evenly, the obtained layer is obtained.

[0043] Performance testing: (1) After overlapping the waterproof membranes with a thickness of 3 mm obtained in Example 2 and Comparative Example 1, the peel strength between the membranes (overlapping edge) was tested with reference to the method in GB / T 23457-2017, and the adhesion of the overlapping edges in shear state (long edge) was tested with reference to the method in GB 12953-2003. The test results are recorded in Table 1.

[0044] Table 1 Peel strength and adhesion test results

[0045] As can be seen from Table 1, compared with Comparative Example 1, the peel strength between the coils and the adhesion in the shear state of the overlapping edges of Example 2 are higher. At the same time, the peel strength remains at 100% after immersion in water. This shows that the present invention realizes a "double-bite" structure during overlap by respectively providing a first overlapping interface and a second overlapping interface on both sides of the junction of the second permeable reaction adhesive layer and the third permeable reaction adhesive layer. While improving the peel strength and adhesion between the coils, it also ensures the waterproof performance of the overlapping interface.

[0046] (2) The waterproof membranes with a thickness of 3 mm obtained in Examples 1 to 8 were subjected to a tensile performance test according to the method in GB / T 23457-2017. The maximum longitudinal tensile force and the maximum transverse tensile force were both the average values of the five specimens as the final test results. The test results are recorded in Table 2.

[0047] Table 2 Tensile performance test results of waterproof membrane

[0048] As can be seen from Table 2, compared with Examples 1-2, the maximum longitudinal tensile force and the maximum transverse tensile force of the waterproof membranes of Examples 3-8 are higher, indicating that the tensile properties of the waterproof membranes are improved by the compound use of the star-shaped structure SBS and the linear structure SBS.

[0049] The above are only 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 principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-base, double-layer prefabricated, double-interlocking, overlapped waterproof membrane comprising, from bottom to top, a first barrier membrane, a first osmotic reactive adhesive layer, a first polymer membrane base layer, a second osmotic reactive adhesive layer, a second polymer membrane base layer, a third osmotic reactive adhesive layer, a third polymer membrane base layer, a fourth osmotic reactive adhesive layer, and a surface layer, wherein the surface layer is formed by connecting the second barrier membrane and the release layer; It is characterized in that A first overlap interface and a second overlap interface are respectively provided on both sides of the junction of the second permeable reactive adhesive layer and the third permeable reactive adhesive layer, one end of the second polymer film base layer extends into the first overlap interface, the second isolation film and the first overlap interface are respectively located on both sides of the anti-sticking layer, the other end of the second polymer film base layer extends into the second overlap interface, the inner wall of the first overlap interface is provided with a third isolation film and a fourth isolation film, and the inner wall of the second overlap interface is provided with a fifth isolation film and a sixth isolation film.

2. The triple-base double-track prefabricated double-occlusal overlap waterproof membrane according to claim 1, characterized in that: The raw materials of the first permeable reactive adhesive layer, the second permeable reactive adhesive layer, the third permeable reactive adhesive layer and the fourth permeable reactive adhesive layer independently include the following components in parts by mass: 30-40 parts of asphalt, 5-15 parts of SBS, 1-3 parts of carboxylated styrene-butadiene rubber, 2-5 parts of tackifier, 3-8 parts of plasticizer, 0.1-1 part of antioxidant, and 25-45 parts of filler; the SBS includes star-structured SBS and linear-structured SBS in a mass ratio of 1:9-9:

1.

3. The triple-base double-track prefabricated double-occlusal overlap waterproof membrane according to claim 2, characterized in that: The raw materials also include 1 to 10 parts of a compound containing an aromatic ring, an alkyl chain and an ether group.

4. The three-base double-track prefabricated double-occlusal overlap waterproof membrane according to claim 3, characterized in that: The mass ratio of the asphalt, SBS and carboxylated styrene-butadiene rubber to the compound containing an aromatic ring, an alkyl chain and an ether group is 58:3-6.

5. The triple-base double-track prefabricated double-occlusal overlap waterproof membrane according to claim 3 or 4, characterized in that: The compound containing an aromatic ring, an alkyl chain and an ether group includes one or both of 2-octadecyl-1,4-dimethoxybenzene and 4-n-octadecyloxybiphenyl.

6. The triple-base double-track prefabricated double-occlusal overlap waterproof membrane according to claim 1, characterized in that: The lengths of the first and second joints are independently 60 to 100 mm; The length extending into the first overlapped interface is 2-100 mm, and the length extending into the second overlapped interface is 2-100 mm.

7. The triple-base double-track prefabricated double-occlusal overlap waterproof membrane according to claim 1, characterized in that: The thickness of the first isolation film, the second isolation film, the third isolation film, the fourth isolation film, the fifth isolation film and the sixth isolation film are each independently 0.035-0.070 mm.

8. The triple-base double-track prefabricated double-occlusal overlap waterproof membrane according to claim 1, characterized in that: The thickness of the first polymer film base layer, the second polymer film base layer, and the third polymer film base layer are each independently 0.1 to 0.15 mm.

9. The triple-base double-track prefabricated double-occlusal overlap waterproof membrane according to claim 1, characterized in that: The raw material of the anti-sticking layer includes one of polymer film, mineral sand, natural sand and recycled concrete sand.

10. The triple-base double-track prefabricated double-occlusal overlap waterproof membrane according to claim 2, characterized in that: The preparation methods of the first osmotic reactive adhesive layer, the second osmotic reactive adhesive layer, the third osmotic reactive adhesive layer and the fourth osmotic reactive adhesive layer each independently comprise the following steps: Heat the asphalt to 180-190°C, mix it evenly with carboxylated styrene-butadiene rubber, SBS and filler, then cool it to 135-140°C and add the remaining components to mix.

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