Double-channel prefabricated interlocking lap waterproofing membrane and preparation method thereof

Abstract

The present invention relates to the technical field of waterproofing membranes, and proposes a double-track prefabricated interlocking lap-jointed waterproofing membrane and a preparation method thereof. The double-track prefabricated interlocking lap-jointed waterproofing membrane 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. The polymer sheet layer 1 and the polymer sheet layer 2 are provided with a waterproofing structural mother port at the same end. An isolation membrane 1 is provided on the upper surface of the end of the polymer permeable reaction adhesive layer 1 away from the waterproofing structural mother port. A polymer permeable reaction adhesive layer 2 is provided on the lower surface of the end of the polymer sheet layer 2 away from the waterproofing structural mother port. An isolation membrane 2 is provided on the lower surface of the polymer permeable reaction adhesive layer 2. The above technical solution solves the problems of difficult construction and poor waterproofing performance of waterproofing membranes in related technologies.

Description

Technical Field

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

[0002] Waterproof membranes are commonly used sheet materials in building waterproofing projects. They are made of high molecular polymers, asphalt, rubber and other materials. They are widely used in building roofs, underground, exterior walls and other parts. They can effectively prevent rainwater, groundwater and other moisture from penetrating into the building, prevent the building structure from moisture and corrosion, and thus extend the service life of the building.

[0003] However, in current building waterproofing projects, commonly used waterproof membranes present numerous problems. During traditional waterproofing construction, the overlapping of two layers is completed on-site by construction workers. This often results in poor bonding strength between the two membranes, making it difficult to achieve the desired full adhesion rate. Furthermore, adjacent membranes often utilize a traditional straight-line overlap structure, which has a high defect rate and is prone to defects at the joints. This can ultimately lead to waterproofing failure, threatening construction safety and adversely affecting personnel and equipment within the building.

[0004] The polymer sheet layer, the core waterproof layer of the waterproof membrane, has a low water permeability. Traditional polymer sheet layers typically use single materials such as polyvinyl chloride, thermoplastic polyolefin, and rubber. While these materials offer some weather resistance, they are easily affected by the external environment when used alone, which can reduce the waterproof performance of the 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 present invention provides a double-channel prefabricated interlocking lap-jointed waterproofing membrane and a preparation method thereof, which solves the problems of great difficulty in construction and poor waterproofing performance of waterproofing membranes in related technologies.

[0007] The technical solutions of the present invention are as follows:

[0008] The present invention provides a double-channel prefabricated interlocking lap-jointed waterproof membrane, which comprises, from top to bottom, an anti-adhesion and viscosity-reducing layer, a polymer permeable reactive adhesive layer 1, a polymer sheet layer 1, a polymer sheet layer 2, and a polymer fiber reinforced cloth reinforcement layer. The polymer sheet layer 1 and the polymer sheet layer 2 are provided with a waterproof structural female opening at the same end. An isolation film 1 is provided on the upper surface of the polymer permeable reactive adhesive layer 1 away from the waterproof structural female opening. A polymer permeable reactive adhesive layer 2 is provided on the lower surface of the polymer sheet layer 2 away from the waterproof structural female opening. An isolation film 2 is provided on the lower surface of the polymer permeable reactive adhesive layer 2.

[0009] The raw materials of the polymer sheet layer 1 and the polymer sheet layer 2 independently include the following components in parts by weight:

[0010] 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;

[0011] The organic silicon compound includes a phenyl silicon-based compound and a vinyl silicon-based compound in a weight ratio of 2 to 5:1.

[0012] In the present invention, polyolefin is a 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 the molecular structure is relatively compact. As the base material of the polymer sheet layer, it can give the polymer sheet layer good flexibility and basic waterproof properties. The polyolefin can be one of polyethylene, polypropylene, polybutylene, and polystyrene, preferably polyethylene; the polyethylene can be one of high-density polyethylene, medium-density polyethylene, and low-density polyethylene, preferably high-density polyethylene.

[0013] In the present invention, the polymer auxiliary material and polyolefin work together to make the internal structure of the polymer sheet layer in the double-track prefabricated bite-lap waterproof membrane more compact, thereby helping to improve the waterproof performance of the double-track prefabricated bite-lap waterproof membrane, and also helping to improve the tensile performance. The polymer auxiliary material can be polyvinyl chloride, chlorosulfonated polyethylene, ethylene-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyamide, polymethyl methacrylate, styrene-butadiene-styrene block copolymer, preferably ethylene-vinyl acetate copolymer.

[0014] In the present invention, the phenyl silicon-based compound can be one or more of phenyltributylantoximosilane, phenyltris(trimethylsilyloxy)silane, and 2-(methyldiphenylsilyl)ethanol, preferably 2-(methyldiphenylsilyl)ethanol, and the vinyl silicon-based compound can be one or both of tetramethyltetravinylcyclotetrasiloxane and vinyltris(β-methoxyethoxy)silane, preferably vinyltris(β-methoxyethoxy)silane.

[0015] As a further technical solution, the organosilicon compound includes 2-(methyldiphenylsilyl)ethanol and vinyltri(β-methoxyethoxy)silane in a weight ratio of 2 to 5:1.

[0016] In the present invention, the weight ratio of 2-(methyldiphenylsilyl)ethanol to vinyltri(β-methoxyethoxy)silane is 2 to 5:1, for example, 2:1, 3:1, 3.5:1, 4:1, 4.5:1, 5:1, preferably 2:1, 3:1, 5:1.

[0017] As a further technical solution, the diameter of the basic magnesium sulfate whiskers is less than 1 μm and the length is 10-60 μm.

[0018] As a further technical solution, the basic magnesium sulfate whiskers are hyperbranched resin C100 composite basic magnesium sulfate whiskers, and the raw materials of the hyperbranched resin C100 composite basic magnesium sulfate whiskers include basic magnesium sulfate whiskers and hyperbranched resin C100 in a weight ratio of 20:2~7.

[0019] In the present invention, the hyperbranched resin C100 is a hyperbranched polymer with a relatively high degree of branching, energy conservation and environmental protection. The hyperbranched resin C100 is used to perform a composite treatment on basic magnesium sulfate whiskers, and the weight ratio of the basic magnesium sulfate whiskers to the hyperbranched resin C100 is reasonably controlled to be 20:2-7. This can effectively overcome the defect of relatively low surface energy of the basic magnesium sulfate whiskers, thereby effectively reducing the agglomeration of the basic magnesium sulfate whiskers in the polymer sheet layer, improving the waterproof performance of the double-channel prefabricated bite-lap waterproof membrane, and also improving the tensile performance of the double-channel prefabricated bite-lap waterproof membrane.

[0020] As a further technical solution, the weight ratio of the basic magnesium sulfate whiskers to the hyperbranched resin C100 is 20:3~4.5.

[0021] In the present invention, when the weight ratio of the basic magnesium sulfate whiskers to the hyperbranched resin C100 is 20:3-4.5, the maximum longitudinal tensile force of the double-track prefabricated interlocking lap-jointed waterproof membrane can be increased to 1534-1542 N / 50 mm, and the maximum transverse tensile force can be increased to 1428-1436 N / 50 mm. When the weight ratio of the basic magnesium sulfate whiskers to the hyperbranched resin C100 is outside the range of 20:3-4.5, the tensile strength of the double-track prefabricated interlocking lap-jointed waterproof membrane is lower.

[0022] As a further technical solution, the preparation method of the hyperbranched resin C100 composite basic magnesium sulfate whiskers comprises the following steps:

[0023] A1, the basic magnesium sulfate whiskers were dispersed in water to form a slurry, the slurry pH was adjusted to 4.5-5.5, mixed uniformly, filtered, washed, and dried to obtain pretreated basic magnesium sulfate whiskers;

[0024] A2. Dispersing the hyperbranched resin C100 in acetone, adding the pretreated basic magnesium sulfate whiskers, ball milling, and drying to obtain the hyperbranched resin C100 composite basic magnesium sulfate whiskers.

[0025] 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% to 16%, for example, it can be 10%, 11%, 12%, 13%, 14%, 15%, 16%, preferably 15%.

[0026] In the present invention, the organic acid may be one or more of formic acid, acetic acid, citric acid, lactic acid, and benzoic acid, preferably acetic acid.

[0027] As a further technical solution, in step A1, the amount of water added is 4 to 6 times the weight of the basic magnesium sulfate whiskers, for example, 4 times, 5 times, or 6 times, preferably 5 times.

[0028] As a further technical solution, in step A2, the amount of acetone added is 10 to 15 times that of the hyperbranched resin C100, for example, it can be 10 times, 11 times, 12 times, 13 times, 14 times, or 15 times, preferably 10 times.

[0029] As a further technical solution, in step A1, the mixing is carried out by ultrasound, and the ultrasound time is 10 to 20 minutes.

[0030] In the present invention, in step A1, washing is required before drying, and water or ethanol can be used for washing to remove excess organic acid on the surface of the pretreated basic magnesium sulfate whiskers, thereby avoiding affecting the subsequent composite process of hyperbranched resin C100 and basic magnesium sulfate whiskers.

[0031] As a further technical solution, in step A2, the ball milling is performed at a speed of 200-300 rpm and for a time of 40-50 min.

[0032] In the present invention, the addition of a plasticizer can improve the processing properties 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 a phthalate plasticizer, an aliphatic dibasic acid ester plasticizer, and a phosphate plasticizer. The phthalate plasticizer can be dioctyl phthalate or dibutyl phthalate, the aliphatic dibasic acid ester plasticizer can be dioctyl adipate or dibutyl sebacate, and the phosphate plasticizer can be triphenyl phosphate, tricresyl phosphate, or trioctyl phosphate, preferably dioctyl phthalate.

[0033] The addition of a compatibilizer can reduce the interfacial tension between the polyolefin substrate and the polymer auxiliary material, allowing for better mixing and dispersion, thereby improving the compatibility between the components and contributing to improved overall performance of the double-layer prefabricated occlusal 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.

[0034] The addition of an antioxidant can delay the oxidative degradation of the polymer material in the polymer sheet layer and extend the service life of the double-channel prefabricated bite-lap waterproof membrane. The antioxidant can be one or more of a hindered phenol antioxidant, a thioether antioxidant, and an amine antioxidant. The hindered phenol antioxidant can be antioxidant 1010, antioxidant 1076, antioxidant 245, and antioxidant 3114. The thioether antioxidant can be antioxidant DLTDP, antioxidant DSTDP, and antioxidant 300. The amine antioxidant can be antioxidant 405 or antioxidant 4720, and is preferably antioxidant 1010.

[0035] The addition of flame retardants can give the double-channel prefabricated bite-lap waterproof membrane basic fireproof properties, so that the membrane can perform better in high temperature scenes. The flame retardant can be one or both of aluminum hydroxide and magnesium hydroxide, preferably aluminum hydroxide.

[0036] 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.

[0037] As a further technical solution, the substrates of the polymer permeation reactive adhesive layer 1 and the polymer permeation reactive adhesive layer 2 independently include one or more of styrene-butadiene rubber, butyl rubber, acrylic rubber and asphalt;

[0038] The first isolation film and the second isolation film each independently include one of a PE film and a PET film, and the PE film and the PET film are removable isolation films.

[0039] 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:

[0040] 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.

[0041] In the present invention, the tackifier may be any one or more tackifiers in the art, preferably a petroleum resin;

[0042] The antioxidant may be any one or more antioxidants known in the art, preferably antioxidant 1010.

[0043] As a further technical solution, the width of the isolation membrane 1 and the isolation membrane 2 are independently ≥100 mm.

[0044] As a further technical solution, the thickness of the polymer sheet layer 1 and the polymer sheet layer 2 are independently ≥ 0.5 mm;

[0045] The thickness of the polymer permeation reactive adhesive layer 1 and the polymer permeation reactive adhesive layer 2 are independently ≥0.3 mm;

[0046] The thickness of the polymer fiber reinforced cloth reinforcement layer is ≥0.2 mm.

[0047] The present invention provides a method for preparing a double-track prefabricated occlusal overlap waterproof membrane, which is used to prepare the double-track prefabricated occlusal overlap waterproof membrane, comprising the following steps:

[0048] S1, blending the components of the polymer sheet layer 1 in parts by weight, and extruding to obtain the polymer sheet layer 1;

[0049] S2, blending the components of the polymer sheet layer 2 in parts by weight, and extruding to obtain the polymer sheet layer 2;

[0050] S3. Laying the polymer fiber reinforced cloth reinforcement layer on the lower surface of the polymer sheet layer 2, hot-pressing the three layers of material, 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 from the polymer sheet layer 2 at the same end with release paper to form a waterproof structural mother port.

[0051] S4. Coat polymer permeable reactive adhesive layer 1 on the upper surface of polymer sheet layer 1, and coat polymer permeable reactive adhesive layer 2 on the lower surface of polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the isolation membrane 1 on the upper surface of polymer permeable reactive adhesive layer 1 away from the waterproof structure mother port, cover the isolation membrane 2 on the lower surface of polymer permeable reactive adhesive layer 2, and cover the anti-sticking and viscosity-reducing layer on the upper surface of polymer permeable reactive adhesive layer 1. Cool and shape to obtain a double-channel prefabricated bite-jointed waterproof membrane.

[0052] As a further technical solution, the width of the waterproof structure female opening is 60~100mm.

[0053] As a further technical solution, the width of the second polymer permeable reactive adhesive layer is ≥100 mm.

[0054] As a further technical solution, the width of the double-track prefabricated interlocking lap waterproof membrane is ≥1.5m.

[0055] In the present invention, the double-track prefabricated interlocking overlap waterproof membrane is provided with a waterproof structural female opening, and its 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.

[0056] The working principle and beneficial effects of the present invention are:

[0057] 1. In the present invention, the double-track prefabricated interlocking lap-jointed waterproof membrane has a multi-layer composite structure and is equipped with a waterproof structural female opening. This allows it to form an interlocking lap joint with the end of the adjacent waterproof membrane away from the waterproof structural female opening, significantly improving the joint quality between the waterproof layers. Simultaneously, the two waterproof layers, polymer sheet layer one and polymer sheet layer two, are composited together, facilitating construction while significantly reducing labor intensity. Both waterproof layers can be laid in a single installation, significantly improving the waterproof performance of the double-track prefabricated interlocking lap-jointed waterproof membrane. This increased ease of construction significantly improves the controllability of the quality of the double-track prefabricated interlocking lap-jointed waterproof membrane and significantly enhances the reliability of the waterproof layer.

[0058] 2. In the present invention, the components of the polymer sheet layer of the double-track prefabricated interlocking lap-jointed waterproof membrane are optimized. Using polyolefin as the base material, the polymer sheet layer is endowed with basic water resistance and flexibility. Combined with an organosilicon compound, a plasticizer, a compatibilizer, an antioxidant, basic magnesium sulfate whiskers, and a flame retardant, a double-track prefabricated interlocking lap-jointed waterproof membrane with excellent waterproof performance is prepared. The organosilicon compound includes a phenylsilicone compound and a vinylsilicone compound. When the phenylsilicone compound and the vinylsilicone compound are introduced into the polymer sheet layer at a weight ratio of 2 to 5:1, the two compounds exhibit a synergistic effect, increasing the bonding between the base material and other components in the polymer sheet layer while effectively preventing the penetration of water molecules, thereby improving the waterproof performance of the double-track prefabricated interlocking lap-jointed waterproof membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] Figure 1 This is a schematic structural diagram of the double-track prefabricated occlusal overlap waterproof membrane prepared in Example 1;

[0061] In the figure: 1 is the anti-sticking and viscosity-reducing layer, 2 is the polymer permeation reaction 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 permeation reaction adhesive layer 2, and 8 is the isolation membrane 2. DETAILED DESCRIPTION

[0062] 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.

[0063] In the following examples and comparative examples, polyethylene is high-density polyethylene, model DMDA-8920;

[0064] The model number of ethylene-vinyl acetate copolymer is 1807EG;

[0065] 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 parts of antioxidant 1010;

[0066] 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 parts of antioxidant 1010;

[0067] The model of petroleum resin is FTR-6100;

[0068] Asphalt is 90# asphalt;

[0069] The model of styrene-butadiene-styrene block copolymer is SBS-611;

[0070] The model of styrene-butadiene rubber is SBR1500;

[0071] Isolation film 1 and isolation film 2 are both PE films;

[0072] The thickness of the polymer sheet layer 1 and the polymer sheet layer 2 are both 0.5 mm;

[0073] The thickness of the polymer fiber reinforced cloth reinforcement layer is 0.2mm, and the material is polypropylene cloth;

[0074] The width of the double-track prefabricated bite-lap waterproof membrane is 1.5m;

[0075] The width of the second polymer permeation reaction adhesive layer is 100 mm;

[0076] Hyperbranched resin C100 was purchased from Wuhan Hyperbranched Resin Technology Co., Ltd.;

[0077] The hyperbranched polyester is a wettable 6-official hyperbranched polyester, model L-6129;

[0078] The diameter of the basic magnesium sulfate whiskers is 0.5 μm and the average length is 20 μm.

[0079] Example 1

[0080] A method for preparing a double-track prefabricated interlocking lap-jointed waterproof membrane comprises the following steps:

[0081] S1. 70 parts of polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 4 parts of 2-(methyldiphenylsilyl)ethanol, 2 parts of vinyltri(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 whiskers, and 3 parts of aluminum hydroxide are blended and extruded to obtain a first polymer sheet layer;

[0082] S2, blending 70 parts of polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 4 parts of 2-(methyldiphenylsilyl)ethanol, 2 parts of vinyltri(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 whiskers, and 3 parts of aluminum hydroxide, and extruding to obtain a second polymer sheet layer;

[0083] S3. Apply a polymer fiber reinforced cloth reinforcement layer to the lower surface of polymer sheet layer 2. Hot-press the three layers, consisting of polymer sheet layer 1, polymer sheet layer 2, and polymer fiber reinforced cloth reinforcement layer, from top to bottom. Separate polymer sheet layer 1 from polymer sheet layer 2 at the same end with a 100 mm wide release paper to form a 100 mm wide waterproof female port.

[0084] S4. Coating a first polymer permeable reactive adhesive layer on the upper surface of the first polymer sheet layer and a second polymer permeable reactive adhesive layer on the lower surface of the second polymer sheet layer away from the waterproof structure female opening. After the gluing process is completed, applying a first release film to the upper surface of the first polymer permeable reactive adhesive layer away from the waterproof structure female opening, applying a second release film to the lower surface of the second polymer permeable reactive adhesive layer, and applying an anti-sticking and viscosity-reducing layer to the upper surface of the first polymer permeable reactive adhesive layer. Cooling and shaping are performed to obtain a double-pass prefabricated occlusal overlap waterproof membrane.

[0085] The structural diagram of the double-track prefabricated occlusal overlap waterproof membrane prepared in Example 1 is as follows: Figure 1 shown.

[0086] Example 2

[0087] A method for preparing a double-track prefabricated interlocking lap-jointed waterproof membrane comprises the following steps:

[0088] S1. 70 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 9 parts of 2-(methyldiphenylsilyl)ethanol, 3 parts of vinyltri(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 whiskers, and 5 parts of aluminum hydroxide are blended and extruded to obtain a first polymer sheet layer;

[0089] S2, blending 70 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 9 parts of 2-(methyldiphenylsilyl)ethanol, 3 parts of vinyltri(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 whiskers, and 5 parts of aluminum hydroxide, and extruding to obtain a second polymer sheet layer;

[0090] S3. Apply a polymer fiber reinforced cloth reinforcement layer to the lower surface of polymer sheet layer 2. Hot-press the three layers, consisting of polymer sheet layer 1, polymer sheet layer 2, and polymer fiber reinforced cloth reinforcement layer, from top to bottom. Separate polymer sheet layer 1 from polymer sheet layer 2 at the same end with a 100 mm wide release paper to form a 100 mm wide waterproof female port.

[0091] S4. Coat polymer permeable reactive adhesive layer 1 on the upper surface of polymer sheet layer 1, and coat polymer permeable reactive adhesive layer 2 on the lower surface of polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the upper surface of polymer permeable reactive adhesive layer 1 away from the waterproof structure mother port with isolation film 1, cover the lower surface of polymer permeable reactive adhesive layer 2 with isolation film 2, and cover the upper surface of polymer permeable reactive adhesive layer 1 with an anti-sticking and viscosity-reducing layer. Cool and shape to obtain a double-channel prefabricated bite-jointed lap waterproof membrane.

[0092] Example 3

[0093] A method for preparing a double-track prefabricated interlocking lap-jointed waterproof membrane comprises the following steps:

[0094] S1. 70 parts of polyethylene, 16 parts of ethylene-vinyl acetate copolymer, 12.5 parts of 2-(methyldiphenylsilyl)ethanol, 2.5 parts of vinyltri(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 whiskers, and 6 parts of aluminum hydroxide are blended and extruded to obtain a first polymer sheet layer;

[0095] S2, blending 70 parts of polyethylene, 16 parts of ethylene-vinyl acetate copolymer, 12.5 parts of 2-(methyldiphenylsilyl)ethanol, 2.5 parts of vinyltri(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 whiskers, and 6 parts of aluminum hydroxide, and extruding to obtain a second polymer sheet layer;

[0096] S3. Apply a polymer fiber reinforced cloth reinforcement layer to the lower surface of polymer sheet layer 2. Hot-press the three layers, consisting of polymer sheet layer 1, polymer sheet layer 2, and polymer fiber reinforced cloth reinforcement layer, from top to bottom. Separate polymer sheet layer 1 from polymer sheet layer 2 at the same end with a 100 mm wide release paper to form a 100 mm wide waterproof female port.

[0097] S4. Coat polymer permeable reactive adhesive layer 1 on the upper surface of polymer sheet layer 1, and coat polymer permeable reactive adhesive layer 2 on the lower surface of polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the upper surface of polymer permeable reactive adhesive layer 1 away from the waterproof structure mother port with isolation film 1, cover the lower surface of polymer permeable reactive adhesive layer 2 with isolation film 2, and cover the upper surface of polymer permeable reactive adhesive layer 1 with an anti-sticking and viscosity-reducing layer. Cool and shape to obtain a double-channel prefabricated bite-jointed lap waterproof membrane.

[0098] Example 4

[0099] The only difference between this embodiment and embodiment 2 is that, in this embodiment, 8 parts of 2-(methyldiphenylsilyl)ethanol and 4 parts of vinyltris(β-methoxyethoxy)silane are added.

[0100] Example 5

[0101] The only difference between this embodiment and embodiment 2 is that, in this embodiment, 10 parts of 2-(methyldiphenylsilyl)ethanol and 2 parts of vinyltris(β-methoxyethoxy)silane are added.

[0102] Example 6

[0103] The preparation method of hyperbranched resin C100 composite basic magnesium sulfate whiskers comprises the following steps:

[0104] A1. Disperse 20 parts of basic magnesium sulfate whiskers in 100 parts of water to form a slurry, adjust the slurry pH to 4.5 with 15% acetic acid solution by mass, sonicate for 10 minutes, mix well, filter, wash with water, and dry to obtain pretreated basic magnesium sulfate whiskers;

[0105] 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;

[0106] A method for preparing a double-track prefabricated interlocking lap-jointed waterproof membrane comprises the following steps:

[0107] S1. 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 resin C100 composite basic magnesium sulfate whiskers, and 5 parts of aluminum hydroxide are blended and extruded to obtain a first polymer sheet layer;

[0108] S2, blending 70 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 10 parts of 2-(methyldiphenylsilyl)ethanol, 2 parts of vinyltri(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 whiskers, and 5 parts of aluminum hydroxide, and extruding to obtain a second polymer sheet layer;

[0109] S3. Apply a polymer fiber reinforced cloth reinforcement layer to the lower surface of polymer sheet layer 2. Hot-press the three layers, consisting of polymer sheet layer 1, polymer sheet layer 2, and polymer fiber reinforced cloth reinforcement layer, from top to bottom. Separate polymer sheet layer 1 from polymer sheet layer 2 at the same end with a 100 mm wide release paper to form a 100 mm wide waterproof female port.

[0110] S4. Coat polymer permeable reactive adhesive layer 1 on the upper surface of polymer sheet layer 1, and coat polymer permeable reactive adhesive layer 2 on the lower surface of polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the upper surface of polymer permeable reactive adhesive layer 1 away from the waterproof structure mother port with isolation film 1, cover the lower surface of polymer permeable reactive adhesive layer 2 with isolation film 2, and cover the upper surface of polymer permeable reactive adhesive layer 1 with an anti-sticking and viscosity-reducing layer. Cool and shape to obtain a double-channel prefabricated bite-jointed lap waterproof membrane.

[0111] Example 7

[0112] The only difference between this embodiment and embodiment 6 is that the preparation method of the hyperbranched resin C100 composite basic magnesium sulfate whiskers in this embodiment is different, specifically:

[0113] A1. Disperse 20 parts of basic magnesium sulfate whiskers in 100 parts of water to form a slurry, adjust the slurry pH to 5.5 with 15% acetic acid solution by mass, sonicate for 20 minutes, mix well, filter, wash with water, and dry to obtain pretreated basic magnesium sulfate whiskers;

[0114] 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.

[0115] Example 8

[0116] The only difference between this embodiment and embodiment 7 is that, in this embodiment, during the preparation of the hyperbranched resin C100 composite basic magnesium sulfate whiskers, 7 parts of the hyperbranched resin C100 and 70 parts of acetone were added.

[0117] Example 9

[0118] The only difference between this embodiment and embodiment 7 is that, in this embodiment, during the preparation of the hyperbranched resin C100 composite basic magnesium sulfate whiskers, 3 parts of the hyperbranched resin C100 and 30 parts of acetone were added.

[0119] Example 10

[0120] The only difference between this embodiment and embodiment 7 is that, in this embodiment, during the preparation of the hyperbranched resin C100 composite basic magnesium sulfate whiskers, 4.5 parts of the hyperbranched resin C100 and 45 parts of acetone were added.

[0121] Example 11

[0122] The preparation method of basic magnesium sulfate whiskers is a hyperbranched polyester composite basic magnesium sulfate whiskers, comprising the following steps:

[0123] A1. Disperse 20 parts of basic magnesium sulfate whiskers in 100 parts of water to form a slurry, adjust the slurry pH to 4.5 with 15% acetic acid solution by mass, sonicate for 10 minutes, mix well, filter, wash with water, and dry to obtain pretreated basic magnesium sulfate whiskers;

[0124] A2, dispersing 2 parts of hyperbranched polyester in 20 parts of acetone, adding pretreated basic magnesium sulfate whiskers, ball milling at 200 rpm for 50 min, and drying to obtain hyperbranched polyester composite basic magnesium sulfate whiskers;

[0125] A method for preparing a double-track prefabricated interlocking lap-jointed waterproof membrane comprises the following steps:

[0126] S1. 70 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 10 parts of 2-(methyldiphenylsilyl)ethanol, 2 parts of vinyltri(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 are blended and extruded to obtain a first polymer sheet layer;

[0127] S2, blending 70 parts of polyethylene, 13 parts of ethylene-vinyl acetate copolymer, 10 parts of 2-(methyldiphenylsilyl)ethanol, 2 parts of vinyltri(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 extruding to obtain a second polymer sheet layer;

[0128] S3. Apply a polymer fiber reinforced cloth reinforcement layer to the lower surface of polymer sheet layer 2. Hot-press the three layers, consisting of polymer sheet layer 1, polymer sheet layer 2, and polymer fiber reinforced cloth reinforcement layer, from top to bottom. Separate polymer sheet layer 1 from polymer sheet layer 2 at the same end with a 100 mm wide release paper to form a 100 mm wide waterproof female port.

[0129] S4. Coat polymer permeable reactive adhesive layer 1 on the upper surface of polymer sheet layer 1, and coat polymer permeable reactive adhesive layer 2 on the lower surface of polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the upper surface of polymer permeable reactive adhesive layer 1 away from the waterproof structure mother port with isolation film 1, cover the lower surface of polymer permeable reactive adhesive layer 2 with isolation film 2, and cover the upper surface of polymer permeable reactive adhesive layer 1 with an anti-sticking and viscosity-reducing layer. Cool and shape to obtain a double-channel prefabricated bite-jointed lap waterproof membrane.

[0130] Comparative Example 1

[0131] The only difference between this comparative example and Example 1 is that in this comparative example, vinyltris(β-methoxyethoxy)silane is replaced by an equal amount of 2-(methyldiphenylsilyl)ethanol.

[0132] Comparative Example 2

[0133] 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 vinyltris(β-methoxyethoxy)silane.

[0134] Comparative Example 3

[0135] The only difference between this comparative example and Example 1 is that in this comparative example, neither 2-(methyldiphenylsilyl)ethanol nor vinyltris(β-methoxyethoxy)silane was added.

[0136] Experimental Example 1 Waterproof Performance Test

[0137] The double-track prefabricated bite-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;

[0138] The test results are shown in Table 1 below:

[0139] Table 1 Waterproof performance test results of double-channel prefabricated bite-lap waterproof membrane

[0140]

[0141] As can be seen from Table 1, compared with Comparative Examples 1 to 3, the waterproof performance of the double-track prefabricated bite-lap 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-lap waterproof membrane, thereby enabling the double-track prefabricated bite-lap waterproof membrane to meet the use requirements in terms of waterproof performance.

[0142] Experimental Example 2 Tensile Properties Test

[0143] The double-track prefabricated occlusal overlap waterproof membranes of Examples 5 to 11 were subjected to a tensile performance test in accordance with GB / T 35467-2017; wherein, during the tensile performance test, the maximum longitudinal tensile force and the maximum transverse tensile force were both the average values ​​of 5 specimens;

[0144] The test results are shown in Table 2:

[0145] Table 2 Tensile performance test results of double-channel prefabricated bite-lap waterproof membrane

[0146]

[0147] As can be seen from Table 2, compared with Example 5 and Example 11, the maximum longitudinal tensile force and the maximum transverse tensile force of Examples 6 to 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-channel prefabricated bite-lap waterproof membrane.

[0148] 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 double-track prefabricated occlusal overlap waterproof membrane, characterized in that: From top to bottom, it includes an anti-sticking 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. The same end of the polymer sheet layer 1 and the polymer sheet layer 2 is provided with a waterproof structural female port. The upper surface of the polymer permeable reaction adhesive layer 1 away from the waterproof structural female port is provided with an isolation film 1. The lower surface of the polymer sheet layer 2 away from the waterproof structural female port is provided with a polymer permeable reaction adhesive layer 2. The 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 independently include the following components in parts by weight: 70 parts of polyolefin, 10-16 parts of ethylene-vinyl acetate copolymer, 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 organic silicon compound includes a phenyl silicon-based compound and a vinyl silicon-based compound in a weight ratio of 2 to 5:

1.

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

1.

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

5.

5. The double-track prefabricated occlusal overlap waterproof 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, the basic magnesium sulfate whiskers were dispersed in water to form a slurry, the slurry pH was adjusted to 4.5-5.5, mixed uniformly, filtered, washed, and dried to obtain pretreated basic magnesium sulfate whiskers; A2. Dispersing the hyperbranched resin C100 in acetone, adding the pretreated basic magnesium sulfate whiskers, ball milling, and drying to obtain the hyperbranched resin C100 composite basic magnesium sulfate whiskers.

6. The double-track prefabricated occlusal overlap waterproof 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 maleic anhydride, low-density polyethylene grafted maleic anhydride, and polypropylene grafted 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-track prefabricated occlusal overlap waterproof 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 non-woven fabric, SMS non-woven fabric, and PLA non-woven fabric.

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

9. The double-track prefabricated occlusal overlap waterproof 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 permeation reactive adhesive layer 1 and the polymer permeation 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, for preparing the double-track prefabricated occlusal overlap waterproofing membrane according to 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 of the polymer sheet layer 2 in parts by weight, and extruding to obtain the polymer sheet layer 2; S3. Laying the polymer fiber reinforced cloth reinforcement layer on the lower surface of the polymer sheet layer 2, hot-pressing the three layers of material, 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 from the polymer sheet layer 2 at the same end with release paper to form a waterproof structural mother port. S4. Coat polymer permeable reactive adhesive layer 1 on the upper surface of polymer sheet layer 1, and coat polymer permeable reactive adhesive layer 2 on the lower surface of polymer sheet layer 2 away from the waterproof structure mother port. After the gluing process is completed, cover the isolation membrane 1 on the upper surface of polymer permeable reactive adhesive layer 1 away from the waterproof structure mother port, cover the isolation membrane 2 on the lower surface of polymer permeable reactive adhesive layer 2, and cover the anti-sticking and viscosity-reducing layer on the upper surface of polymer permeable reactive adhesive layer 1. Cool and shape to obtain a double-channel prefabricated bite-jointed waterproof membrane.

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