Double-channel prefabricated occlusion lap joint waterproof coiled material and preparation method thereof

Abstract

The invention relates to the technical field of waterproof coiled materials, and provides a double-channel prefabricated occlusion lap joint waterproof coiled material and a preparation method thereof. The invention relates to a double-channel prefabricated occlusion lap joint waterproof coiled material, which sequentially comprises an anti-sticking and visbreaking layer, a macromolecular permeable reaction adhesive layer 1, a macromolecular sheet material layer 1, a macromolecular sheet material layer 2 and a macromolecular fiber reinforced cloth reinforcing layer from top to bottom, and waterproof structure female ports are arranged at the same ends of the macromolecular sheet material layer 1 and the macromolecular sheet material layer 2; an isolating membrane 1 is arranged on the upper surface of one end, far away from the waterproof structure female opening, of the macromolecular permeable reaction adhesive layer 1, a macromolecular permeable reaction adhesive layer 2 is arranged on the lower surface of one end, far away from the waterproof structure female opening, of the macromolecular sheet layer 2, and an isolating membrane 2 is arranged on the lower surface of the macromolecular permeable reaction adhesive layer 2. According to the technical scheme, the problems of high construction difficulty and poor waterproof performance of the waterproof roll in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of waterproof coiled materials, and in particular to a double-channel prefabricated bite-jointed overlapping waterproof coiled material and a preparation method thereof. Background Art

[0002] Waterproof membrane is a commonly used sheet material in building waterproofing projects. It is made of high molecular polymers, asphalt, rubber and other materials. It is widely used in building roofs, underground, exterior walls and other parts. It can effectively prevent rainwater, groundwater and other moisture from penetrating into the interior of the building, prevent the building structure from moisture and corrosion, thereby extending the service life of the building.

[0003] However, in the current construction of building waterproofing projects, there are many problems with commonly used waterproof membranes. In the construction process of traditional waterproof layers, the overlapping work between the two waterproof layers is completed by construction workers on site, which often leads to poor bonding strength between the two waterproof membranes and difficulty in achieving the expected full adhesion rate. In addition, adjacent waterproof membranes mostly use the traditional one-line overlap structure, which has a high defect rate and is prone to defects at the joints, which may eventually cause the waterproof layer to fail, threatening the safety of the construction project and causing adverse effects on personnel and equipment in the building.

[0004] As the core waterproof layer of waterproof membrane, polymer sheet layer has low water permeability. Traditional polymer sheet layer usually uses polyvinyl chloride, thermoplastic polyolefin, rubber and other materials alone. Although these materials have certain weather resistance, they are easily affected by the external environment when used alone, thus reducing the waterproof performance of waterproof membrane.

[0005] Therefore, choosing appropriate polymer sheet layer waterproof materials and improving the overlap structure are of great significance to reducing the difficulty of waterproof membrane construction and improving waterproof performance. Summary of the invention

[0006] The invention provides a double-channel prefabricated interlocking overlapping waterproofing membrane and a preparation method thereof, which solves the problems of great difficulty in construction and poor waterproofing performance of the waterproofing membrane in the related art.

[0007] The technical solution of the present invention is as follows: The present invention provides a double-channel prefabricated occlusal overlap waterproofing coiled material, which comprises, from top to bottom, an anti-adhesion and viscosity-reducing layer, a polymer permeable reaction adhesive layer 1, a polymer sheet layer 1, a polymer sheet layer 2, and a polymer fiber reinforced cloth reinforcement layer, wherein the same end of the polymer sheet layer 1 and the polymer sheet layer 2 is provided with a waterproof structural female opening, an upper surface of the polymer permeable reaction adhesive layer 1 away from the waterproof structural female opening is provided with an isolation film 1, a lower surface of the polymer sheet layer 2 away from the waterproof structural female opening is provided with a polymer permeable reaction adhesive layer 2, and a lower surface of the polymer permeable reaction adhesive layer 2 is provided with an isolation film 2; The raw materials of the polymer sheet layer 1 and the polymer sheet layer 2 each independently include the following components in parts by weight: 70 parts of polyolefin, 10 - 16 parts of polymer auxiliary material, 6 - 15 parts of organosilicon compound, 2 - 4 parts of plasticizer, 1 - 3 parts of compatibilizer, 1 - 3 parts of antioxidant, 10 - 16 parts of basic magnesium sulfate whisker, 3 - 6 parts of flame retardant; The organosilicon compound includes a phenylsilyl compound and a vinylsilyl compound with a weight ratio of 2 - 5:1.

[0008] In the present invention, polyolefin is the general term for olefin polymers and copolymers, which are formed by the addition polymerization of olefins with double bonds. The molecular chain of polyolefin has good flexibility and good chemical stability, and at the same time, the molecular structure is relatively compact. As the matrix material of the polymer sheet layer, it can endow the polymer sheet layer with good flexibility and basic waterproof performance. Polyolefin can be one of polyethylene, polypropylene, polybutene, and polystyrene, preferably polyethylene; polyethylene can be one of high-density polyethylene, medium-density polyethylene, and low-density polyethylene, preferably high-density polyethylene.

[0009] In the present invention, the polymer auxiliary material and polyolefin act together, which can make the internal structure of the polymer sheet layer in the double-channel prefabricated occlusive overlapping waterproof coiled material more compact, thus helping to improve the waterproof performance of the double-channel prefabricated occlusive overlapping waterproof coiled material and also helping to improve the tensile performance. The polymer auxiliary material can be polyvinyl chloride, chlorosulfonated polyethylene, ethylene-vinyl acetate copolymer, ethylene-methyl methacrylate copolymer, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyamide, polymethyl methacrylate, styrene-butadiene-styrene block copolymer, preferably ethylene-vinyl acetate copolymer.

[0010] In the present invention, the phenylsilyl compound can be one or more of phenyltributanone oxime silane, phenyltris(trimethylsiloxy)silane, and 2-(methyldiphenylsilyl)ethanol, preferably 2-(methyldiphenylsilyl)ethanol. The vinylsilyl compound can be one or two of tetramethyltetravinylcyclotetrasiloxane and vinyltris(β-methoxyethoxy)silane, preferably vinyltris(β-methoxyethoxy)silane.

[0011] As a further technical solution, the organosilicon compound includes 2-(methyldiphenylsilyl)ethanol and vinyltris(β-methoxyethoxy)silane with a weight ratio of 2 - 5:1.

[0012] In the present invention, the weight ratio of 2-(methyldiphenylsilyl)ethanol to vinyltris(β-methoxyethoxy)silane is 2 to 5:1, for example, it can be 2:1, 3:1, 3.5:1, 4:1, 4.5:1, 5:1, and preferably 2:1, 3:1, 5:1.

[0013] As a further technical solution, the diameter of the basic magnesium sulfate whisker is <1 μm, and the length is 10 to 60 μm.

[0014] As a further technical solution, the basic magnesium sulfate whisker is a hyperbranched resin C100 composite basic magnesium sulfate whisker, and the raw materials of the hyperbranched resin C100 composite basic magnesium sulfate whisker include basic magnesium sulfate whisker and hyperbranched resin C100 with a weight ratio of 20:2 to 7.

[0015] In the present invention, hyperbranched resin C100 is a hyperbranched polymer with a relatively high degree of branching, energy conservation and environmental protection. By using hyperbranched resin C100 to compound the basic magnesium sulfate whisker and reasonably controlling the weight ratio of the basic magnesium sulfate whisker to hyperbranched resin C100 to be 20:2 to 7, the defect of relatively low surface energy of the basic magnesium sulfate whisker can be effectively overcome, thereby effectively reducing the agglomeration of the basic magnesium sulfate whisker in the polymer sheet layer. While improving the waterproof performance of the double-channel prefabricated occlusive overlapping waterproof coil, the tensile performance of the double-channel prefabricated occlusive overlapping waterproof coil can also be improved.

[0016] As a further technical solution, the weight ratio of the basic magnesium sulfate whisker to hyperbranched resin C100 is 20:3 to 4.5.

[0017] In the present invention, when the weight ratio of the basic magnesium sulfate whisker to hyperbranched resin C100 is 20:3 to 4.5, the longitudinal maximum tensile force of the double-channel prefabricated occlusive overlapping waterproof coil can be increased to 1534 to 1542 N / 50 mm, and the transverse maximum tensile force can be increased to 1428 to 1436 N / 50 mm. When the weight ratio of the basic magnesium sulfate whisker to hyperbranched resin C100 is outside the range of 20:3 to 4.5, the tensile strength of the double-channel prefabricated occlusive overlapping waterproof coil is lower.

[0018] As a further technical solution, the preparation method of the hyperbranched resin C100 composite basic magnesium sulfate whisker includes the following steps: A1. Disperse the basic magnesium sulfate whisker in water to form a slurry, adjust the pH value of the slurry to 4.5 to 5.5, mix evenly, filter, wash, and dry to obtain pretreated basic magnesium sulfate whisker; A2. Disperse the hyperbranched resin C100 in acetone, add the pretreated basic magnesium sulfate whisker, ball mill, and dry to obtain the hyperbranched resin C100 composite basic magnesium sulfate whisker.

[0019] As a further technical solution, in step A1, when adjusting the pH value of the slurry, an organic acid is used, and the mass fraction of the organic acid is 10% - 16%, for example, it can be 10%, 11%, 12%, 13%, 14%, 15%, 16%, and preferably it is 15%.

[0020] In the present invention, the organic acid can be one or more of formic acid, acetic acid, citric acid, lactic acid, and benzoic acid, and preferably it is acetic acid.

[0021] As a further technical solution, in step A1, the addition amount of water is 4 - 6 times the weight of the magnesium hydroxide sulfate whisker, for example, it can be 4 times, 5 times, 6 times, and preferably it is 5 times.

[0022] As a further technical solution, in step A2, the addition amount of acetone is 10 - 15 times that of the hyperbranched resin C100, for example, it can be 10 times, 11 times, 12 times, 13 times, 14 times, 15 times, and preferably it is 10 times.

[0023] As a further technical solution, in step A1, when mixing evenly, it is in an ultrasonic manner, and the ultrasonic time is 10 - 20 min.

[0024] In the present invention, in step A1, washing is required before drying, and water or ethanol can be used for washing to wash away the excess organic acid on the surface of the pretreated magnesium hydroxide sulfate whisker, so as to avoid affecting the subsequent composite process of the hyperbranched resin C100 and the magnesium hydroxide sulfate whisker.

[0025] As a further technical solution, in step A2, when ball - milling, the speed is 200 - 300 rpm and the time is 40 - 50 min.

[0026] In the present invention, the addition of the plasticizer can improve the processing performance of each component in the polymer sheet, making it easier to extrude and improving the flexibility of the polymer sheet layer. The plasticizer can be one or more of phthalate plasticizers, aliphatic dibasic acid ester plasticizers, and phosphate plasticizers. Among them, the phthalate plasticizers can be dioctyl phthalate and dibutyl phthalate, the aliphatic dibasic acid ester plasticizers can be dioctyl adipate and dibutyl sebacate, and the phosphate plasticizers can be triphenyl phosphate, tricresyl phosphate, and trioctyl phosphate. Preferably, it is dioctyl phthalate; The addition of the compatibilizer can reduce the interfacial tension between the polyolefin substrate and the polymer auxiliary material, so that they can be better mixed and dispersed, thereby improving the compatibility between the components, and helping to improve the overall performance of the double-channel prefabricated bite overlap waterproof membrane. The compatibilizer can be one or more of high-density polyethylene grafted maleic anhydride, low-density polyethylene grafted maleic anhydride, and polypropylene grafted maleic anhydride, preferably high-density polyethylene grafted maleic anhydride; The addition of antioxidants can delay the oxidative degradation of polymer materials in the polymer sheet layer and extend the service life of the double-channel prefabricated bite overlap waterproof membrane. The antioxidant can be one or more of hindered phenol antioxidants, thioether antioxidants, and amine antioxidants. The hindered phenol antioxidants can be antioxidants 1010, 1076, 245, and 3114. The thioether antioxidants can be antioxidants DLTDP, DSTDP, and 300. The amine antioxidants can be antioxidants 405 and 4720, preferably antioxidant 1010. The addition of flame retardant can give the double-channel prefabricated bite-jointed waterproof membrane basic fireproof performance, so that the membrane can play a better role in high temperature scenes. The flame retardant can be one or both of aluminum hydroxide and magnesium hydroxide, preferably aluminum hydroxide.

[0027] As a further technical solution, the material of the polymer fiber reinforced cloth reinforcement layer includes one of polypropylene cloth, polyester cloth, polyethylene non-woven fabric, spunbond meltblown spunbond non-woven fabric, and polylactic acid non-woven fabric, preferably polypropylene cloth.

[0028] As a further technical solution, the substrates of the polymer permeable reactive adhesive layer 1 and the polymer permeable reactive adhesive layer 2 independently include one or more of styrene-butadiene rubber, butyl rubber, acrylate rubber and asphalt; The isolation film 1 and the isolation film 2 each independently include one of a PE film and a PET film, and the PE film and the PET film are removable isolation films.

[0029] In the present invention, when the substrates of the polymer permeable reactive adhesive layer 1 and the polymer permeable reactive adhesive layer 2 are asphalt and styrene-butadiene rubber, the raw materials of the polymer permeable reactive adhesive layer 1 and the polymer permeable reactive adhesive layer 2 each independently include the following components in parts by weight: 40 parts of asphalt, 3 parts of styrene-butadiene rubber, 10 parts of styrene-butadiene-styrene block copolymer, 3 parts of tackifier, and 0.5 parts of antioxidant.

[0030] In the present invention, the tackifier may be any one or more tackifiers in the art, preferably a petroleum resin; The antioxidant may be any one or more antioxidants known in the art, and is preferably antioxidant 1010.

[0031] As a further technical solution, the widths of the isolation film 1 and the isolation film 2 are each independently ≥ 100 mm.

[0032] As a further technical solution, the thicknesses of the polymer sheet layer 1 and the polymer sheet layer 2 are each independently ≥ 0.5 mm; The thicknesses of the polymer permeation reaction adhesive layer 1 and the polymer permeation reaction adhesive layer 2 are each independently ≥ 0.3 mm; The thickness of the polymer fiber reinforced cloth reinforcement layer ≥ 0.2 mm.

[0033] The present invention provides a method for preparing the double-channel prefabricated occlusive overlapping waterproof coiled material, used to prepare the double-channel prefabricated occlusive overlapping waterproof coiled material, including the following steps: S1. Blend the components of the polymer sheet layer 1 in the stated parts by weight, and extrude to obtain the polymer sheet layer 1; S2. Blend the components of the polymer sheet layer 2 in the stated parts by weight, and extrude to obtain the polymer sheet layer 2; S3. Cover the lower surface of the polymer sheet layer 2 with the polymer fiber reinforced cloth reinforcement layer, and perform hot pressing and compounding on the three-layer material including the polymer sheet layer 1, the polymer sheet layer 2, and the polymer fiber reinforced cloth reinforcement layer from top to bottom. At the same end of the polymer sheet layer 1 and the polymer sheet layer 2, use release paper to divide the polymer sheet layer 1 and the polymer sheet layer 2 to form a waterproof structure female opening; S4. Coat the upper surface of the polymer sheet layer 1 with the polymer permeation reaction adhesive layer 1, coat the lower surface of the polymer sheet layer 2 at the end away from the waterproof structure female opening with the polymer permeation reaction adhesive layer 2. After the coating process is completed, cover the upper surface of the polymer permeation reaction adhesive layer 1 at the end away from the waterproof structure female opening with the isolation film 1, cover the lower surface of the polymer permeation reaction adhesive layer 2 with the isolation film 2, cover the upper surface of the polymer permeation reaction adhesive layer 1 with the anti-adhesion and anti-sticking layer, and cool and shape to obtain the double-channel prefabricated occlusive overlapping waterproof coiled material.

[0034] As a further technical solution, the width of the waterproof structure female opening is 60 - 100 mm.

[0035] As a further technical solution, the width of the polymer permeation reaction adhesive layer 2 ≥ 100 mm.

[0036] As a further technical solution, the width of the double-channel prefabricated occlusive overlapping waterproof coiled material ≥ 1.5 m.

[0037] In the present invention, the double-track prefabricated interlocking overlap waterproof membrane is provided with a waterproof structural female opening, and the waterproof structural female opening can be aligned with the end of the adjacent double-track prefabricated interlocking overlap waterproof membrane away from the waterproof structural female opening. After removing the isolation membrane 1 and the isolation membrane 2 at the other interlocking overlap, the interlocking overlap part is compacted to realize the female opening-sub-edge interlocking overlap structure, thereby greatly improving the joint quality between the waterproof layers.

[0038] The working principle and beneficial effects of the present invention are: 1. In the present invention, the double-track prefabricated occlusal overlap waterproofing membrane is a multi-layer composite structure and is provided with a waterproof structural female opening, which can form an occlusal overlap structure with the end of the adjacent waterproofing membrane away from the waterproof structural female opening, which can greatly improve the joint quality between the waterproof layers, and at the same time, the polymer sheet layer 1 and the polymer sheet layer 2 are compounded. While the construction is convenient, the labor intensity is greatly reduced. The laying of two waterproof layers can be completed in one laying construction, which significantly improves the waterproof performance of the double-track prefabricated occlusal overlap waterproofing membrane. Due to the increase in the convenience of construction, the controllability of the quality of the double-track prefabricated occlusal overlap waterproofing membrane is greatly improved, and the reliability of the waterproof layer is greatly improved.

[0039] 2. In the present invention, the components of the polymer sheet layer of the double-channel prefabricated bite-lap waterproofing membrane are optimized, and polyolefin is used as the substrate to give the polymer sheet layer basic water resistance and flexibility. Combined with organosilicon compounds, plasticizers, compatibilizers, antioxidants, basic magnesium sulfate whiskers and flame retardants, a double-channel prefabricated bite-lap waterproofing membrane with good waterproof performance is prepared. The organosilicon compounds include phenyl silicon-based compounds and vinyl silicon-based compounds. After the phenyl silicon-based compounds and the vinyl silicon-based compounds are introduced into the polymer sheet layer at a weight ratio of 2 to 5:1, the two have a synergistic effect, which increases the bonding effect between the substrate and other components in the polymer sheet layer, and can effectively prevent the penetration of water molecules, thereby improving the waterproof performance of the double-channel prefabricated bite-lap waterproofing membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Figure 1 This is a schematic diagram of the structure of the double-channel prefabricated occlusal overlap waterproof membrane prepared in Example 1; In the figure: 1 is the anti-adhesive and anti-viscosity reducing layer, 2 is the polymer permeable reactive adhesive layer 1, 3 is the isolation membrane 1, 4 is the polymer sheet layer 1, 5 is the polymer sheet layer 2, 6 is the polymer fiber reinforced cloth reinforcement layer, 7 is the polymer permeable reactive adhesive layer 2, and 8 is the isolation membrane 2. DETAILED DESCRIPTION

[0042] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. 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 creative efforts fall within the scope of protection of the present invention.

[0043] In the following examples and comparative examples, the polyethylene is high-density polyethylene, and the model is DMDA-8920; The model of the ethylene-vinyl acetate copolymer is 1807EG; The thickness of the polymer permeation reaction adhesive layer 1 is 0.3 mm, and the components include 40 parts of asphalt, 3 parts of styrene-butadiene rubber, 10 parts of styrene-butadiene-styrene block copolymer, 3 parts of petroleum resin, and 0.5 part of antioxidant 1010; The thickness of the polymer permeation reaction adhesive layer 2 is 0.3 mm, and the components include 40 parts of asphalt, 3 parts of styrene-butadiene rubber, 10 parts of styrene-butadiene-styrene block copolymer, 3 parts of petroleum resin, and 0.5 part of antioxidant 1010; The model of the petroleum resin is FTR-6100; The asphalt is 90# asphalt; The model of the styrene-butadiene-styrene block copolymer is SBS-611; The model of the styrene-butadiene rubber is SBR1500; Both the release film 1 and the release film 2 are PE films; The thicknesses of both the polymer sheet layer 1 and the polymer sheet layer 2 are 0.5 mm; The thickness of the polymer fiber reinforced cloth reinforcement layer is 0.2 mm, and the material is polypropylene cloth; The width of the double-channel prefabricated occlusive overlapping waterproof coiled material is 1.5 m; The width of the polymer permeation reaction adhesive layer 2 is 100 mm; Hyperbranched resin C100, purchased from Wuhan Hyperbranched Resin Technology Co., Ltd.; The hyperbranched polyester is a wettable 6-functional hyperbranched polyester, and the model is L-6129; The diameter of the basic magnesium sulfate whiskers is 0.5 μm, and the average length is 20 μm.

[0044] Example 1 A preparation method of a double-channel prefabricated occlusive overlapping waterproof coiled material, comprising the following steps: S1, 70 parts of polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 4 parts of 2-(methyldiphenylsilyl)ethanol, 2 parts of vinyl tri(β-methoxyethoxy)silane, 2 parts of dioctyl phthalate, 1 part of high-density polyethylene grafted maleic anhydride, 1 part of antioxidant 1010, 10 parts of basic magnesium sulfate whisker, and 3 parts of aluminum hydroxide are blended and extruded to obtain a polymer sheet layer 1; S2, 70 parts of polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 4 parts of 2-(methyldiphenylsilyl)ethanol, 2 parts of vinyl tri(β-methoxyethoxy)silane, 2 parts of dioctyl phthalate, 1 part of high-density polyethylene grafted maleic anhydride, 1 part of antioxidant 1010, 10 parts of basic magnesium sulfate whisker, and 3 parts of aluminum hydroxide are blended and extruded to obtain a polymer sheet layer 2; S3, covering the lower surface of the polymer sheet layer 2 with a polymer fiber reinforced cloth reinforcement layer, hot pressing and compounding the three layers of materials including the polymer sheet layer 1, the polymer sheet layer 2, and the polymer fiber reinforced cloth reinforcement layer from top to bottom, and separating the polymer sheet layer 1 and the polymer sheet layer 2 with a separation paper with a width of 100 mm at the same end of the polymer sheet layer 1 and the polymer sheet layer 2 to form a waterproof structure mother port with a width of 100 mm; S4, coating the polymer permeable reaction adhesive layer 1 on the upper surface of the polymer sheet layer 1, coating the polymer permeable reaction adhesive layer 2 on the lower surface of the polymer sheet layer 2 away from the waterproof structure mother port, after the glue coating process is completed, covering the isolation film 1 on the upper surface of the polymer permeable reaction adhesive layer 1 away from the waterproof structure mother port, covering the isolation film 2 on the lower surface of the polymer permeable reaction adhesive layer 2, covering the anti-sticking and viscosity-reducing layer on the upper surface of the polymer permeable reaction adhesive layer 1, cooling and shaping, and obtaining a double-channel prefabricated bite overlap waterproof membrane; The structural schematic diagram of the double-channel prefabricated occlusal overlap waterproof membrane prepared in Example 1 is as follows Figure 1 shown.

[0045] Example 2 A method for preparing a double-channel prefabricated occlusal overlap waterproofing membrane comprises the following steps: S1, 70 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 9 parts of 2-(methyldiphenylsilyl)ethanol, 3 parts of vinyl tri(β-methoxyethoxy)silane, 3 parts of dioctyl phthalate, 2 parts of high-density polyethylene grafted maleic anhydride, 2 parts of antioxidant 1010, 12 parts of basic magnesium sulfate whisker, and 5 parts of aluminum hydroxide are blended and extruded to obtain a polymer sheet layer 1; S2, 70 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 9 parts of 2-(methyldiphenylsilyl)ethanol, 3 parts of vinyl tri(β-methoxyethoxy)silane, 3 parts of dioctyl phthalate, 2 parts of high-density polyethylene grafted maleic anhydride, 2 parts of antioxidant 1010, 12 parts of basic magnesium sulfate whisker, and 5 parts of aluminum hydroxide are blended and extruded to obtain a polymer sheet layer 2; S3, covering the lower surface of the polymer sheet layer 2 with a polymer fiber reinforced cloth reinforcement layer, hot pressing and compounding the three layers of materials including the polymer sheet layer 1, the polymer sheet layer 2, and the polymer fiber reinforced cloth reinforcement layer from top to bottom, and separating the polymer sheet layer 1 and the polymer sheet layer 2 with a separation paper with a width of 100 mm at the same end of the polymer sheet layer 1 and the polymer sheet layer 2 to form a waterproof structure mother port with a width of 100 mm; S4. Coat the polymer permeable reaction adhesive layer 1 on the upper surface of the polymer sheet layer 1, and coat the polymer permeable reaction adhesive layer 2 on the lower surface of the polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the isolation film 1 on the upper surface of the polymer permeable reaction adhesive layer 1 away from the waterproof structure mother port, cover the isolation film 2 on the lower surface of the polymer permeable reaction adhesive layer 2, cover the anti-sticking and viscosity-reducing layer on the upper surface of the polymer permeable reaction adhesive layer 1, cool and shape, and obtain a double-channel prefabricated bite-jointed lap waterproof membrane.

[0046] Example 3 A method for preparing a double-channel prefabricated occlusal overlap waterproofing membrane comprises the following steps: S1, 70 parts of polyethylene, 16 parts of ethylene-vinyl acetate copolymer, 12.5 parts of 2-(methyldiphenylsilyl)ethanol, 2.5 parts of vinyl tri(β-methoxyethoxy)silane, 4 parts of dioctyl phthalate, 3 parts of high-density polyethylene grafted maleic anhydride, 3 parts of antioxidant 1010, 16 parts of basic magnesium sulfate whisker, and 6 parts of aluminum hydroxide are blended and extruded to obtain a polymer sheet layer 1; S2, 70 parts of polyethylene, 16 parts of ethylene-vinyl acetate copolymer, 12.5 parts of 2-(methyldiphenylsilyl)ethanol, 2.5 parts of vinyl tri(β-methoxyethoxy)silane, 4 parts of dioctyl phthalate, 3 parts of high-density polyethylene grafted maleic anhydride, 3 parts of antioxidant 1010, 16 parts of basic magnesium sulfate whisker, and 6 parts of aluminum hydroxide are blended and extruded to obtain a polymer sheet layer 2; S3, covering the lower surface of the polymer sheet layer 2 with a polymer fiber reinforced cloth reinforcement layer, hot pressing and compounding the three layers of materials including the polymer sheet layer 1, the polymer sheet layer 2, and the polymer fiber reinforced cloth reinforcement layer from top to bottom, and separating the polymer sheet layer 1 and the polymer sheet layer 2 with a separation paper with a width of 100 mm at the same end of the polymer sheet layer 1 and the polymer sheet layer 2 to form a waterproof structure mother port with a width of 100 mm; S4. Coat the polymer permeable reaction adhesive layer 1 on the upper surface of the polymer sheet layer 1, and coat the polymer permeable reaction adhesive layer 2 on the lower surface of the polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the isolation film 1 on the upper surface of the polymer permeable reaction adhesive layer 1 away from the waterproof structure mother port, cover the isolation film 2 on the lower surface of the polymer permeable reaction adhesive layer 2, cover the anti-sticking and viscosity-reducing layer on the upper surface of the polymer permeable reaction adhesive layer 1, cool and shape, and obtain a double-channel prefabricated bite-jointed lap waterproof membrane.

[0047] Example 4 The difference between this embodiment and embodiment 2 is that, in this embodiment, 8 parts of 2-(methyldiphenylsilyl)ethanol and 4 parts of vinyltri(β-methoxyethoxy)silane are added.

[0048] Example 5 The only difference between this embodiment and embodiment 2 is that, in this embodiment, 10 parts of 2-(methyldiphenylsilyl)ethanol and 2 parts of vinyltri(β-methoxyethoxy)silane are added.

[0049] Example 6 The preparation method of hyperbranched resin C100 composite basic magnesium sulfate whisker comprises the following steps: A1. Disperse 20 parts of basic magnesium sulfate whiskers in 100 parts of water to form a slurry, adjust the pH value of the slurry to 4.5 with a 15% mass fraction of acetic acid solution, ultrasonicate for 10 minutes, mix well, filter, wash with water, and dry to obtain pretreated basic magnesium sulfate whiskers; A2, dispersing 2 parts of hyperbranched resin C100 in 20 parts of acetone, adding pretreated basic magnesium sulfate whiskers, ball milling at 200 rpm for 50 min, and drying to obtain hyperbranched resin C100 composite basic magnesium sulfate whiskers; A method for preparing a double-channel prefabricated occlusal overlap waterproofing membrane comprises the following steps: S1, 70 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 10 parts of 2-(methyldiphenylsilyl)ethanol, 2 parts of vinyl tri(β-methoxyethoxy)silane, 3 parts of dioctyl phthalate, 2 parts of high-density polyethylene grafted maleic anhydride, 2 parts of antioxidant 1010, 12 parts of hyperbranched resin C100 composite basic magnesium sulfate whisker, and 5 parts of aluminum hydroxide are blended and extruded to obtain a polymer sheet layer 1; S2, 70 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 10 parts of 2-(methyldiphenylsilyl)ethanol, 2 parts of vinyl tri(β-methoxyethoxy)silane, 3 parts of dioctyl phthalate, 2 parts of high-density polyethylene grafted maleic anhydride, 2 parts of antioxidant 1010, 12 parts of hyperbranched resin C100 composite basic magnesium sulfate whisker, and 5 parts of aluminum hydroxide are blended and extruded to obtain a polymer sheet layer 2; S3, covering the lower surface of the polymer sheet layer 2 with a polymer fiber reinforced cloth reinforcement layer, hot pressing and compounding the three layers of materials including the polymer sheet layer 1, the polymer sheet layer 2, and the polymer fiber reinforced cloth reinforcement layer from top to bottom, and separating the polymer sheet layer 1 and the polymer sheet layer 2 with a separation paper with a width of 100 mm at the same end of the polymer sheet layer 1 and the polymer sheet layer 2 to form a waterproof structure mother port with a width of 100 mm; S4. Coat the polymer permeable reaction adhesive layer 1 on the upper surface of the polymer sheet layer 1, and coat the polymer permeable reaction adhesive layer 2 on the lower surface of the polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the isolation film 1 on the upper surface of the polymer permeable reaction adhesive layer 1 away from the waterproof structure mother port, cover the isolation film 2 on the lower surface of the polymer permeable reaction adhesive layer 2, cover the anti-sticking and viscosity-reducing layer on the upper surface of the polymer permeable reaction adhesive layer 1, cool and shape, and obtain a double-channel prefabricated bite-jointed lap waterproof membrane.

[0050] Example 7 The difference between this embodiment and embodiment 6 is that the preparation method of the hyperbranched resin C100 composite basic magnesium sulfate whisker in this embodiment is different, specifically: A1. Disperse 20 parts of basic magnesium sulfate whiskers in 100 parts of water to form a slurry, adjust the pH value of the slurry to 5.5 with a 15% mass fraction of acetic acid solution, ultrasonicate for 20 minutes, mix well, filter, wash with water, and dry to obtain pretreated basic magnesium sulfate whiskers; A2. Disperse 2 parts of hyperbranched resin C100 in 20 parts of acetone, add pretreated basic magnesium sulfate whiskers, ball mill at 300 rpm for 40 min, and dry to obtain hyperbranched resin C100 composite basic magnesium sulfate whiskers.

[0051] Example 8 The difference between this example and Example 7 is only that in this example, during the preparation of the hyperbranched resin C100 composite basic magnesium sulfate whiskers, 7 parts of hyperbranched resin C100 and 70 parts of acetone are added.

[0052] Example 9 The difference between this example and Example 7 is only that in this example, during the preparation of the hyperbranched resin C100 composite basic magnesium sulfate whiskers, 3 parts of hyperbranched resin C100 and 30 parts of acetone are added.

[0053] Example 10 The difference between this example and Example 7 is only that in this example, during the preparation of the hyperbranched resin C100 composite basic magnesium sulfate whiskers, 4.5 parts of hyperbranched resin C100 and 45 parts of acetone are added.

[0054] Example 11 A preparation method of hyperbranched polyester composite basic magnesium sulfate whiskers, comprising the following steps: A1. Disperse 20 parts of basic magnesium sulfate whiskers in 100 parts of water to form a slurry, adjust the pH value of the slurry to 4.5 with a 15% acetic acid solution by mass fraction, ultrasonicate for 10 min, mix evenly, filter, wash with water, and dry to obtain pretreated basic magnesium sulfate whiskers; A2. Disperse 2 parts of hyperbranched polyester in 20 parts of acetone, add the pretreated basic magnesium sulfate whiskers, ball mill at 200 rpm for 50 min, and dry to obtain hyperbranched polyester composite basic magnesium sulfate whiskers; A preparation method of a double - channel prefabricated occlusive overlapping waterproof coiled material, comprising the following steps: S1. Blend 70 parts of polyethylene, 13 parts of ethylene - vinyl acetate copolymer, 10 parts of 2 - (methyldiphenylsilyl) ethanol, 2 parts of vinyltris(β - methoxyethoxy) silane, 3 parts of dioctyl phthalate, 2 parts of high - density polyethylene grafted maleic anhydride, 2 parts of antioxidant 1010, 12 parts of hyperbranched polyester composite basic magnesium sulfate whiskers, and 5 parts of aluminum hydroxide, and extrude to obtain the polymer sheet layer 1; S2. Blend 70 parts of polyethylene, 13 parts of ethylene - vinyl acetate copolymer, 10 parts of 2 - (methyldiphenylsilyl) ethanol, 2 parts of vinyltris(β - methoxyethoxy) silane, 3 parts of dioctyl phthalate, 2 parts of high - density polyethylene grafted maleic anhydride, 2 parts of antioxidant 1010, 12 parts of hyperbranched polyester composite basic magnesium sulfate whiskers, and 5 parts of aluminum hydroxide, and extrude to obtain the polymer sheet layer 2; S3, covering the lower surface of the polymer sheet layer 2 with a polymer fiber reinforced cloth reinforcement layer, hot pressing and compounding the three layers of materials including the polymer sheet layer 1, the polymer sheet layer 2, and the polymer fiber reinforced cloth reinforcement layer from top to bottom, and separating the polymer sheet layer 1 and the polymer sheet layer 2 with a separation paper with a width of 100 mm at the same end of the polymer sheet layer 1 and the polymer sheet layer 2 to form a waterproof structure mother port with a width of 100 mm; S4. Coat the polymer permeable reaction adhesive layer 1 on the upper surface of the polymer sheet layer 1, and coat the polymer permeable reaction adhesive layer 2 on the lower surface of the polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the isolation film 1 on the upper surface of the polymer permeable reaction adhesive layer 1 away from the waterproof structure mother port, cover the isolation film 2 on the lower surface of the polymer permeable reaction adhesive layer 2, cover the anti-sticking and viscosity-reducing layer on the upper surface of the polymer permeable reaction adhesive layer 1, cool and shape, and obtain a double-channel prefabricated bite-jointed lap waterproof membrane.

[0055] Comparative Example 1 The only difference between this comparative example and Example 1 is that in this comparative example, vinyl tris(β-methoxyethoxy)silane is replaced by an equal amount of 2-(methyldiphenylsilyl)ethanol.

[0056] Comparative Example 2 The only difference between this comparative example and Example 1 is that in this comparative example, 2-(methyldiphenylsilyl)ethanol is replaced by an equal amount of vinyltri(β-methoxyethoxy)silane.

[0057] Comparative Example 3 The difference between this comparative example and Example 1 is that in this comparative example, neither 2-(methyldiphenylsilyl)ethanol nor vinyltri(β-methoxyethoxy)silane is added.

[0058] Experimental Example 1 Waterproof Performance Test The double-channel prefabricated bite-jointed lap waterproof membranes of Examples 1 to 5 and Comparative Examples 1 to 3 were tested for waterproof performance according to the test method in GB / T 35467-2017; The test results are shown in Table 1 below: Table 1 Test results of waterproof performance of double-channel prefabricated bite-jointed waterproof membrane

[0059] It can be seen from Table 1 that compared with Comparative Examples 1 to 3, the waterproof performance of the double-track prefabricated bite-jointed waterproof membrane of Examples 1 to 5 is improved, indicating that the addition of phenyl silicon-based compounds and vinyl silicon-based compounds to the polymer sheet layer can play a synergistic role in improving the waterproof performance of the double-track prefabricated bite-jointed waterproof membrane, thereby enabling the double-track prefabricated bite-jointed waterproof membrane to meet the use requirements in terms of waterproof performance.

[0060] Experimental Example 2 Tensile Property Test The double - layer prefabricated occlusive lapped waterproof coiled materials of Examples 5 - 11 were subjected to tensile property tests in accordance with GB / T 35467 - 2017; among them, when conducting the tensile property tests, the maximum longitudinal tensile force and the maximum transverse tensile force were both the averages of 5 specimens; The test results are shown in Table 2: Table 2 Tensile Property Test Results of Double - layer Prefabricated Occlusive Lapped Waterproof Coiled Materials

[0061] It can be seen from Table 2 that compared with Examples 5 and 11, the maximum longitudinal tensile force and the maximum transverse tensile force of Examples 6 - 10 are improved, indicating that the composite treatment of basic magnesium sulfate whiskers with hyperbranched resin C100 can improve the tensile properties of the double - layer prefabricated occlusive lapped waterproof coiled materials.

[0062] 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 within the protection scope of the present invention.

Claims

1. A double-channel prefabricated occlusal overlap waterproof membrane, characterized in that: From top to bottom, it includes an anti-adhesive and anti-viscosity layer, a polymer permeable reaction adhesive layer 1, a polymer sheet layer 1, a polymer sheet layer 2, and a polymer fiber reinforced cloth reinforcement layer. The same end of the polymer sheet layer 1 and the polymer sheet layer 2 is provided with a waterproof structural mother port, and the upper surface of the polymer permeable reaction adhesive layer 1 away from the waterproof structural mother port is provided with a separation film 1, and the lower surface of the polymer sheet layer 2 away from the waterproof structural mother port is provided with a polymer permeable reaction adhesive layer 2, and the lower surface of the polymer permeable reaction adhesive layer 2 is provided with a separation film 2; The raw materials of the polymer sheet layer 1 and the polymer sheet layer 2 each independently include the following components in parts by weight: 70 parts of polyolefin, 10-16 parts of polymer auxiliary materials, 6-15 parts of organosilicon compounds, 2-4 parts of plasticizers, 1-3 parts of compatibilizers, 1-3 parts of antioxidants, 10-16 parts of basic magnesium sulfate whiskers, and 3-6 parts of flame retardants; The organic silicon compounds include phenyl silicon-based compounds and vinyl silicon-based compounds in a weight ratio of 2 to 5:

1.

2. A double-channel prefabricated occlusal overlap waterproof membrane according to claim 1, characterized in that: The organic silicon compound comprises 2-(methyldiphenylsilyl)ethanol and vinyltri(β-methoxyethoxy)silane in a weight ratio of 2 to 5:

1.

3. The double-channel prefabricated occlusal overlap waterproofing membrane according to claim 1, characterized in that: The basic magnesium sulfate whisker is a hyperbranched resin C100 composite basic magnesium sulfate whisker, and the raw materials of the hyperbranched resin C100 composite basic magnesium sulfate whisker include basic magnesium sulfate whisker and hyperbranched resin C100 in a weight ratio of 20:2-7.

4. The double-channel prefabricated occlusal overlap waterproofing membrane according to claim 3, characterized in that: The weight ratio of the basic magnesium sulfate whisker to the hyperbranched resin C100 is 20:3-4.

5.

5. The double-channel prefabricated interlocking lap waterproofing membrane according to claim 3, characterized in that: The preparation method of the hyperbranched resin C100 composite basic magnesium sulfate whisker comprises the following steps: A1, dispersing the basic magnesium sulfate whiskers in water to form a slurry, adjusting the slurry pH to 4.5-5.5, mixing evenly, filtering, washing, and drying to obtain pretreated basic magnesium sulfate whiskers; A2, dispersing the hyperbranched resin C100 in acetone, adding the pretreated basic magnesium sulfate whisker, ball milling, and drying to obtain the hyperbranched resin C100 composite basic magnesium sulfate whisker.

6. The double-channel prefabricated occlusal overlap waterproofing membrane according to claim 1, characterized in that: The plasticizer includes one or more of phthalate plasticizers, aliphatic dibasic acid ester plasticizers, and phosphate plasticizers; The compatibilizer includes one or more of high-density polyethylene grafted with maleic anhydride, low-density polyethylene grafted with maleic anhydride, and polypropylene grafted with maleic anhydride; The antioxidant includes one or more of hindered phenol antioxidants, thioether antioxidants, and amine antioxidants; The flame retardant includes one or both of aluminum hydroxide and magnesium hydroxide.

7. The double-channel prefabricated occlusal overlap waterproofing membrane according to claim 1, characterized in that: The material of the polymer fiber reinforced cloth reinforcement layer includes one of polypropylene cloth, polyester cloth, polyethylene-based non-woven fabric, SMS non-woven fabric, and PLA non-woven fabric.

8. The double-channel prefabricated occlusal overlap waterproofing membrane according to claim 1, characterized in that: The substrates of the polymer permeable reactive adhesive layer 1 and the polymer permeable reactive adhesive layer 2 independently include one or more of styrene-butadiene rubber, butyl rubber, acrylate rubber and asphalt; The isolation film 1 and the isolation film 2 each independently include one of a PE film and a PET film.

9. The double-channel prefabricated occlusal overlap waterproofing membrane according to claim 1, characterized in that: The thickness of the polymer sheet layer 1 and the polymer sheet layer 2 are independently ≥ 0.5 mm; The thickness of the polymer permeable reactive adhesive layer 1 and the polymer permeable reactive adhesive layer 2 are independently ≥ 0.3 mm; The thickness of the polymer fiber reinforced cloth reinforcement layer is ≥0.2 mm.

10. A method for preparing a double-track prefabricated occlusal overlap waterproofing membrane, used to prepare a double-track prefabricated occlusal overlap waterproofing membrane as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, blending the components of the polymer sheet layer 1 in parts by weight, and extruding to obtain the polymer sheet layer 1; S2, blending the components in parts by weight of the polymer sheet layer 2, and extruding to obtain the polymer sheet layer 2; S3, covering the lower surface of the polymer sheet layer 2 with the polymer fiber reinforced cloth reinforcement layer, hot pressing and compounding the three layers of materials including the polymer sheet layer 1, the polymer sheet layer 2 and the polymer fiber reinforced cloth reinforcement layer from top to bottom, and separating the polymer sheet layer 1 and the polymer sheet layer 2 at the same end of the polymer sheet layer 1 and the polymer sheet layer 2 with a release paper to form a waterproof structure mother port; S4. Coat the polymer permeable reaction adhesive layer 1 on the upper surface of the polymer sheet layer 1, and coat the polymer permeable reaction adhesive layer 2 on the lower surface of the polymer sheet layer 2 away from the waterproof structural mother port. After the gluing process is completed, cover the isolation membrane 1 on the upper surface of the polymer permeable reaction adhesive layer 1 away from the waterproof structural mother port, cover the isolation membrane 2 on the lower surface of the polymer permeable reaction adhesive layer 2, cover the anti-sticking and viscosity-reducing layer on the upper surface of the polymer permeable reaction adhesive layer 1, cool and shape, and obtain a double-channel prefabricated bite-jointed lap waterproof membrane.

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