Wall corner waterproof roll easy to stick to wall and preparation method of wall corner waterproof roll

Abstract

The invention discloses a wall corner waterproof roll easy to stick to a wall and a preparation method thereof.The waterproof roll is composed of a first polypropylene fiber non-woven fabric layer, a first adhesive layer, a middle layer, a second adhesive layer and a second polypropylene fiber non-woven fabric layer, the two polypropylene fiber non-woven fabric layers are each formed by weft knitting and interweaving of two strands of polypropylene fibers with different single fiber numbers, and the middle layer is made of polypropylene fibers with different single fiber numbers. The moisture absorption of the polypropylene fibers with large number of single fibers is better than that of the polypropylene fibers with small number of single fibers, so that the cement can more quickly permeate into the polypropylene non-woven fabric layer from the outside of the polypropylene non-woven fabric layer, the cement one-way material guiding function can be achieved, the waterproof roll can be better and more quickly attached to a wall surface tightly, and the waterproof effect is better. The waterproof coiled material can be prevented from being separated from and folded down from a wall surface coated with cement, time and labor are saved, and the paving efficiency of the waterproof coiled material is improved. In addition, the waterproof coiled material has good waterproof performance, chemical resistance, weather resistance and excellent mechanical strength, has a small expansion coefficient, and is light in weight and good in flame retardant property.

Description

Technical Field

[0001] The invention relates to the technical field of waterproof coiled materials, and more particularly to an easy-to-stick wall waterproof coiled material for wall corners and a preparation method thereof. Background Art

[0002] At present, waterproofing membranes can be mainly divided into asphalt, modified asphalt and polymer synthesis types. The common polymer synthesis type is polyethylene polypropylene composite waterproofing membrane, which is light in weight, low in cost and has a high waterproof effect. For example, the patent authorization announcement number is CN 115466578 B, which is a polypropylene waterproofing membrane and a preparation method thereof. The waterproofing membrane includes a first isolation layer, a self-adhesive polymer modified asphalt layer, a polypropylene sheet, a pressure-sensitive adhesive layer and a second isolation layer from bottom to top. The longitudinal tension, transverse tension, longitudinal tear strength, transverse tear strength and bursting strength are very high. However, this type of polypropylene waterproofing membrane has the following shortcomings: when paving a 90-degree corner, although the polypropylene waterproofing membrane can be adhered to the wall through the cement laid on the wall in advance, when the installation time is short, the polypropylene waterproofing membrane is easy to detach from the cement and fold down, and it is difficult to fit tightly with the wall. Workers need to press the polypropylene waterproofing membrane on the wall for a long time, which makes the construction inconvenient, time-consuming and labor-intensive. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art and provide an easy-to-stick wall waterproof roll for corners and a preparation method thereof, which can adhere to the wall better and faster, prevent the waterproof roll from detaching and folding off the wall coated with cement, save time and labor, and improve the installation efficiency of the waterproof roll.

[0004] To achieve the above-mentioned object, the first aspect of the present invention provides an easy-to-stick wall waterproof roll for corners, the waterproof roll is formed by connecting a first polypropylene non-woven fabric layer, a first viscose layer, an intermediate layer, a second viscose layer and a second polypropylene non-woven fabric layer in sequence from top to bottom;

[0005] The first polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers, wherein the first polypropylene fibers with a small single fiber number are used as the outer surface and form a hexagonal honeycomb shape, and the second polypropylene fibers with a large single fiber number are used as the inner surface connected to the first viscose layer and form a plain weave shape;

[0006] The first adhesive layer comprises the following raw materials in parts by mass: 10-20 parts of epoxy acrylate resin, 10-20 parts of polyethylene resin, 10-20 parts of polyethylene resin, 10-20 parts of octylphenol tackifying resin, 5-8 parts of antioxidant, 5-8 parts of leveling agent, 1-5 parts of flame retardant, and 3-8 parts of curing agent;

[0007] The intermediate layer comprises the following raw materials in parts by mass: 50-150 parts of linear low-density polyethylene, 7-9 parts of oleic acid amide, 20-30 parts of polyvinylidene fluoride, 20-25 parts of butyl rubber, 4-8 parts of anti-aging agent, 4-8 parts of stabilizer, and 4-8 parts of flame retardant masterbatch;

[0008] The second adhesive layer comprises the following raw materials in parts by mass: 10-20 parts of epoxy acrylate resin, 10-20 parts of polyethylene resin, 10-20 parts of octylphenol tackifying resin, 5-8 parts of antioxidant, 5-8 parts of leveling agent, 1-5 parts of flame retardant, and 3-8 parts of curing agent;

[0009] The second polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The third polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the fourth polypropylene fiber with a large single fiber number is used as the inner surface connected to the second viscose layer and forms a plain weave.

[0010] Preferably, the number of single fibers of the first polypropylene fiber is set to 6F-32F; the number of single fibers of the second polypropylene fiber is set to 48F-72F; the number of single fibers of the third polypropylene fiber is set to 6F-32F; and the number of single fibers of the fourth polypropylene fiber is set to 48F-72F.

[0011] Preferably, the antioxidants of the first adhesive layer and the second adhesive layer are both formed by mixing antioxidant 1010 and antioxidant 246 in a mass ratio of 2:1.

[0012] Preferably, the leveling agents of the first adhesive layer and the second adhesive layer are both acrylic leveling agents or silicone leveling agents.

[0013] Preferably, the curing agents of the first adhesive layer and the second adhesive layer are both set to at least one of ethylenediamine, hexamethylenediamine and bismaleimide.

[0014] Preferably, the flame retardants of the first adhesive layer and the second adhesive layer include the following raw materials in parts by mass: 15-20 parts of graphene oxide, 2-6 parts of alkylphenol polyoxyethylene ether, 10-20 parts of chlorinated paraffin, 2-5 parts of magnesium hydroxide, 1-3 parts of sodium tungstate, 10-15 parts of polyaminocyclotriphosphazene, 5-8 parts of ammonium polyphosphate, and 2-4 parts of diethanolamine.

[0015] Preferably, the anti-aging agent is isopropylated triphenyl phosphate; and the stabilizer is calcium stearate.

[0016] Preferably, the flame retardant masterbatch comprises the following raw materials in parts by mass: 20-30 parts of polyolefin resin, 8-10 parts of silicone rubber, 2-6 parts of alkylphenol polyoxyethylene ether, 10-15 parts of graphene oxide, 10-15 parts of chlorinated paraffin, 8-12 parts of coupling agent, 5-8 parts of dimethyl silicone oil, and 6-10 parts of zinc stearate.

[0017] Preferably, the coupling agent is vinyltrimethoxysilane.

[0018] Preferably, at least one layer of a 0.5-2 mm thick and 500-650 g / m2 thick material is embedded in the middle layer. 2 Polyethylene fiber cloth.

[0019] A second aspect of the present invention provides a method for preparing an easy-to-stick wall waterproof roll for a wall corner, comprising the following steps:

[0020] (1) preparing a polypropylene non-woven fabric: weaving two strands of polypropylene fibers with different numbers of single fibers into a double-sided polypropylene non-woven fabric through a weft knitting process, wherein the outer surface of the polypropylene non-woven fabric forms a hexagonal honeycomb shape, and the inner surface of the polypropylene non-woven fabric forms a plain weave shape;

[0021] (2) preparing the adhesive layer: adding epoxy acrylate resin, polyethylene resin, octylphenol aldehyde tackifying resin, antioxidant and flame retardant to the reaction kettle respectively, turning on the stirrer, stirring for 0.5 to 2 hours at a temperature of 25 to 40° C., adding the curing agent, stirring for 0.5 to 1 hour, evacuating to -0.1 MPa, stirring at the pressure for 1 to 2 hours, and then performing vacuum defoaming and discharging to obtain the adhesive material;

[0022] (3) gluing: applying a viscose material on the inner surface of the first polypropylene non-woven fabric and the inner surface of the second polypropylene non-woven fabric respectively;

[0023] (4) Preparing an intermediate layer: placing oleic acid amide, polyvinylidene fluoride, an anti-aging agent, a stabilizer, and a flame retardant masterbatch into a high-speed mixer, heating the mixture to 70-80°C, stirring the mixture for 10-20 minutes, and then heating the mixture to 85-90°C, adding butyl rubber, stirring the mixture for 20-30 minutes, and finally heating the mixture to 95-100°C, adding linear low-density polyethylene, stirring the mixture at high speed for 10-15 minutes, discharging the mixture, and cooling the mixture to 45-60°C to obtain an intermediate layer material. The intermediate layer material is placed in the feeding zone of the high-speed mixer, and then extruded through an extruder and a die to obtain an intermediate layer sheet.

[0024] (5) Compounding: The first polypropylene non-woven fabric after gluing and the second polypropylene non-woven fabric after gluing are completely compounded with the middle layer sheet through a three-roller machine, passed through a guide roller to a traction machine, trimmed, and entered a winder to obtain a finished waterproof roll.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The waterproof roll material of the present invention is composed of a first polypropylene non-woven fabric layer, a first viscose layer, an intermediate layer, a second viscose layer and a second polypropylene non-woven fabric layer. The two polypropylene non-woven fabric layers are formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The hygroscopicity of the polypropylene fibers with a large single fiber number is better than that of the polypropylene fibers with a small single fiber number. In this way, cement can penetrate from the outside of the polypropylene non-woven fabric layer to the inside of the polypropylene non-woven fabric layer more quickly, which can play a one-way material guide function for cement, so that the waterproof roll material can be better and faster to fit closely with the wall surface, and the waterproof roll material can be prevented from detaching and folding down from the wall surface coated with cement, which saves time and effort and improves the paving efficiency of the waterproof roll material.

[0027] 2. The waterproof membrane of the present invention has good waterproof performance, chemical resistance, weather resistance and excellent mechanical strength, has a small expansion coefficient, is light in weight and has good flame retardant properties.

[0028] 3. The outer surface of the polypropylene non-woven fabric layer of the present invention forms a hexagonal honeycomb shape, which is conducive to the penetration of cement and can enhance the connection strength with cement. The inner surface of the polypropylene non-woven fabric layer forms a plain weave shape, which can enhance the connection strength with the viscose layer.

[0029] 4. The adhesive layer of the present invention uses epoxy acrylate resin, polyethylene resin, and octylphenolic tackifying resin for coordination, which can greatly improve the bonding strength between the polypropylene non-woven fabric layer and the middle layer and avoid the problem of separation.

[0030] 5. The linear low-density polyethylene of the present invention has stable chemical resistance, puncture resistance, high impact strength, and high resistance to environmental stress cracking. In addition, the linear low-density polyethylene, polyvinylidene fluoride, and butyl rubber can be synergistically blended to enhance the retention rate of the tensile strength at break and the retention rate of the elongation at break of the waterproof membrane.

[0031] 6. The flame retardant masterbatch of the present invention is composed of polyolefin resin, silicone rubber, alkylphenol polyoxyethylene ether, graphene oxide, chlorinated paraffin, coupling agent, dimethyl silicone oil and zinc stearate, and has good flame retardancy, and the limiting oxygen index in the flame retardant performance can be as high as 38.6%. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 12 is a schematic diagram of the structure of an easy-to-stick wall waterproof membrane for corners provided by an embodiment of the present invention;

[0034] Figure 2 The present invention is a schematic structural diagram of another easy-to-stick wall waterproof membrane for corners provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Please refer to Figure 1 The figure shows an easy-to-stick wall waterproof roll for wall corners, which is composed of a first polypropylene non-woven fabric layer 1, a first viscose layer 2, an intermediate layer 3, a second viscose layer 4 and a second polypropylene non-woven fabric layer 5 connected in sequence from top to bottom.

[0037] like Figure 2 As shown, as a further improvement, at least one layer of 0.5-2 mm thick and 500-650 g / m2 of density can be embedded in the middle layer 3. 2 Polyethylene fiber cloth 6. Polyethylene fiber cloth 6 can greatly improve the structural strength of the waterproof roll.

[0038] Example 1

[0039] Embodiment 1 of the present invention provides an easy-to-stick wall waterproof roll for wall corners, which is formed by connecting a first polypropylene non-woven fabric layer, a first viscose layer, an intermediate layer, a second viscose layer and a second polypropylene non-woven fabric layer in sequence from top to bottom.

[0040] The first polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The first polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the second polypropylene fiber with a large single fiber number is used as the inner surface connected to the first viscose layer and forms a plain weave.

[0041] The first adhesive layer includes the following raw materials in parts by mass: 10 parts of epoxy acrylate resin, 10 parts of polyethylene resin, 10 parts of octylphenol formaldehyde tackifying resin, 5 parts of antioxidant, 5 parts of leveling agent, 1 part of flame retardant, and 3 parts of curing agent.

[0042] The intermediate layer includes the following raw materials in parts by mass: 50 parts of linear low-density polyethylene, 7 parts of oleic acid amide, 20 parts of polyvinylidene fluoride, 20 parts of butyl rubber, 4 parts of anti-aging agent, 4 parts of stabilizer, and 4 parts of flame retardant masterbatch.

[0043] The second adhesive layer includes the following raw materials in parts by mass: 10 parts of epoxy acrylate resin, 10 parts of polyethylene resin, 10 parts of octylphenol formaldehyde tackifying resin, 5 parts of antioxidant, 5 parts of leveling agent, 1 part of flame retardant, and 3 parts of curing agent.

[0044] The second polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The third polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the fourth polypropylene fiber with a large single fiber number is used as the inner surface connected to the second viscose layer and forms a plain weave.

[0045] The number of single fibers of the first polypropylene fiber is set to 10F; the number of single fibers of the second polypropylene fiber is set to 48F; the number of single fibers of the third polypropylene fiber is set to 10F; and the number of single fibers of the fourth polypropylene fiber is set to 48F.

[0046] The antioxidants of the first adhesive layer and the second adhesive layer are both configured as a mixture of antioxidant 1010 and antioxidant 246 in a mass ratio of 2:1.

[0047] The leveling agents of the first adhesive layer and the second adhesive layer are both set as acrylic leveling agents. The curing agents of the first adhesive layer and the second adhesive layer are both set as ethylenediamine.

[0048] The flame retardants of the first adhesive layer and the second adhesive layer include the following raw materials in parts by mass: 15 parts of graphene oxide, 2 parts of alkylphenol polyoxyethylene ether, 10 parts of chlorinated paraffin, 2 parts of magnesium hydroxide, 1 part of sodium tungstate, 10 parts of polyaminocyclotriphosphazene, 5 parts of ammonium polyphosphate, and 2 parts of diethanolamine.

[0049] The anti-aging agent is set as isopropylated triphenyl phosphate; and the stabilizer is set as calcium stearate.

[0050] The flame retardant masterbatch includes the following raw materials by mass: 20 parts of polyolefin resin, 8 parts of silicone rubber, 2 parts of alkylphenol polyoxyethylene ether, 10 parts of graphene oxide, 10 parts of chlorinated paraffin, 8 parts of coupling agent, 5 parts of dimethyl silicone oil, and 6 parts of zinc stearate. The coupling agent is set to vinyl trimethoxy silane.

[0051] The preparation method of the easy-to-stick wall waterproof membrane for corners comprises the following steps:

[0052] (1) preparing a polypropylene non-woven fabric: weaving two strands of polypropylene fibers with different numbers of single fibers into a double-sided polypropylene non-woven fabric through a weft knitting process, wherein the outer surface of the polypropylene non-woven fabric forms a hexagonal honeycomb shape, and the inner surface of the polypropylene non-woven fabric forms a plain weave shape;

[0053] (2) preparing the adhesive layer: adding epoxy acrylate resin, polyethylene resin, octylphenol aldehyde tackifying resin, antioxidant and flame retardant to the reaction kettle respectively, turning on the stirrer, stirring for 0.5 h at 30° C., adding curing agent, stirring for 0.5 h, vacuuming to -0.1 MPa, stirring at the pressure for 1 h, and then vacuum defoaming and discharging to obtain the adhesive material;

[0054] (3) gluing: applying a viscose material on the inner surface of the first polypropylene non-woven fabric and the inner surface of the second polypropylene non-woven fabric respectively;

[0055] (4) Preparing an intermediate layer: oleic acid amide, polyvinylidene fluoride, anti-aging agent, stabilizer, and flame retardant masterbatch are placed in a high-speed mixer, heated to 70°C, stirred for 20 minutes, and then heated to 85°C, butyl rubber is added, stirred for 30 minutes, and finally heated to 95°C, linear low-density polyethylene is added, stirred at high speed for 15 minutes, discharged, and cooled to 45°C to obtain an intermediate layer material. The intermediate layer material is placed in the feeding zone of the high-speed mixer, passed through an extruder, and extruded through a die to obtain an intermediate layer sheet;

[0056] (5) Compounding: The first polypropylene non-woven fabric after gluing and the second polypropylene non-woven fabric after gluing are completely compounded with the middle layer sheet through a three-roller machine, passed through a guide roller to a traction machine, trimmed, and entered a winder to obtain a finished waterproof roll.

[0057] Example 2

[0058] Embodiment 2 of the present invention provides an easy-to-stick wall waterproof roll for wall corners, which is formed by connecting a first polypropylene non-woven fabric layer, a first viscose layer, an intermediate layer, a second viscose layer and a second polypropylene non-woven fabric layer in sequence from top to bottom.

[0059] The first polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The first polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the second polypropylene fiber with a large single fiber number is used as the inner surface connected to the first viscose layer and forms a plain weave.

[0060] The first adhesive layer includes the following raw materials in parts by mass: 15 parts of epoxy acrylate resin, 15 parts of polyethylene resin, 15 parts of octylphenol formaldehyde tackifying resin, 6 parts of antioxidant, 6 parts of leveling agent, 3 parts of flame retardant and 5 parts of curing agent.

[0061] The intermediate layer includes the following raw materials in parts by mass: 100 parts of linear low-density polyethylene, 8 parts of oleic acid amide, 25 parts of polyvinylidene fluoride, 23 parts of butyl rubber, 6 parts of anti-aging agent, 6 parts of stabilizer, and 6 parts of flame retardant masterbatch.

[0062] The second adhesive layer includes the following raw materials in parts by mass: 15 parts of epoxy acrylate resin, 15 parts of polyethylene resin, 15 parts of octylphenol formaldehyde tackifying resin, 6 parts of antioxidant, 6 parts of leveling agent, 3 parts of flame retardant and 5 parts of curing agent.

[0063] The second polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The third polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the fourth polypropylene fiber with a large single fiber number is used as the inner surface connected to the second viscose layer and forms a plain weave.

[0064] The number of single fibers of the first polypropylene fiber is set to 20F; the number of single fibers of the second polypropylene fiber is set to 52F; the number of single fibers of the third polypropylene fiber is set to 20F; and the number of single fibers of the fourth polypropylene fiber is set to 52F.

[0065] The antioxidants of the first adhesive layer and the second adhesive layer are both configured as a mixture of antioxidant 1010 and antioxidant 246 in a mass ratio of 2:1.

[0066] The leveling agents of the first adhesive layer and the second adhesive layer are both set as organic silicon leveling agents. The curing agents of the first adhesive layer and the second adhesive layer are both set as hexamethylenediamine.

[0067] The flame retardants of the first adhesive layer and the second adhesive layer include the following raw materials in parts by mass: 18 parts of graphene oxide, 5 parts of alkylphenol polyoxyethylene ether, 15 parts of chlorinated paraffin, 5 parts of magnesium hydroxide, 2 parts of sodium tungstate, 13 parts of polyaminocyclotriphosphazene, 6 parts of ammonium polyphosphate, and 3 parts of diethanolamine.

[0068] The anti-aging agent is set as isopropylated triphenyl phosphate; and the stabilizer is set as calcium stearate.

[0069] The flame retardant masterbatch includes the following raw materials by mass: 25 parts of polyolefin resin, 9 parts of silicone rubber, 5 parts of alkylphenol polyoxyethylene ether, 13 parts of graphene oxide, 13 parts of chlorinated paraffin, 10 parts of coupling agent, 7 parts of dimethyl silicone oil, and 8 parts of zinc stearate. The coupling agent is set to vinyl trimethoxy silane.

[0070] The preparation method of the easy-to-stick wall waterproof membrane for corners comprises the following steps:

[0071] (1) preparing a polypropylene non-woven fabric: weaving two strands of polypropylene fibers with different numbers of single fibers into a double-sided polypropylene non-woven fabric through a weft knitting process, wherein the outer surface of the polypropylene non-woven fabric forms a hexagonal honeycomb shape, and the inner surface of the polypropylene non-woven fabric forms a plain weave shape;

[0072] (2) preparing the adhesive layer: adding epoxy acrylate resin, polyethylene resin, octylphenol aldehyde tackifying resin, antioxidant and flame retardant to a reaction kettle respectively, turning on the stirrer, stirring at 35° C. for 1 h, adding the curing agent, stirring for 0.8 h, evacuating to -0.1 MPa, stirring at the pressure for 1.5 h, and then vacuum defoaming and discharging to obtain the adhesive material;

[0073] (3) gluing: applying a viscose material on the inner surface of the first polypropylene non-woven fabric and the inner surface of the second polypropylene non-woven fabric respectively;

[0074] (4) Preparation of the middle layer: oleic acid amide, polyvinylidene fluoride, anti-aging agent, stabilizer, and flame retardant masterbatch were placed in a high-speed mixer, heated to 75°C, stirred for 15 minutes, and then heated to 88°C, butyl rubber was added, stirred for 25 minutes, and finally heated to 98°C, linear low-density polyethylene was added, stirred at high speed for 12 minutes, discharged, cooled to 50°C, and the middle layer material was obtained. The middle layer material was placed in the feeding zone of the high-speed mixer, passed through an extruder, and extruded through a die to obtain a middle layer sheet;

[0075] (5) Compounding: The first polypropylene non-woven fabric after gluing and the second polypropylene non-woven fabric after gluing are completely compounded with the middle layer sheet through a three-roller machine, passed through a guide roller to a traction machine, trimmed, and entered a winder to obtain a finished waterproof roll.

[0076] Example 3

[0077] Embodiment 3 of the present invention provides an easy-to-stick wall waterproof roll for wall corners, which is formed by connecting a first polypropylene non-woven fabric layer, a first viscose layer, an intermediate layer, a second viscose layer and a second polypropylene non-woven fabric layer in sequence from top to bottom.

[0078] The first polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The first polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the second polypropylene fiber with a large single fiber number is used as the inner surface connected to the first viscose layer and forms a plain weave.

[0079] The first adhesive layer includes the following raw materials in parts by mass: 20 parts of epoxy acrylate resin, 20 parts of polyethylene resin, 20 parts of octylphenol formaldehyde tackifying resin, 8 parts of antioxidant, 8 parts of leveling agent, 5 parts of flame retardant, and 8 parts of curing agent.

[0080] The intermediate layer comprises the following raw materials in parts by mass: 150 parts of linear low-density polyethylene, 9 parts of oleic acid amide, 30 parts of polyvinylidene fluoride, 25 parts of butyl rubber, 4-8 parts of anti-aging agent, 8 parts of stabilizer, and 8 parts of flame retardant masterbatch.

[0081] The second adhesive layer includes the following raw materials in parts by mass: 20 parts of epoxy acrylate resin, 20 parts of polyethylene resin, 20 parts of octylphenol formaldehyde tackifying resin, 8 parts of antioxidant, 8 parts of leveling agent, 5 parts of flame retardant, and 8 parts of curing agent.

[0082] The second polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The third polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the fourth polypropylene fiber with a large single fiber number is used as the inner surface connected to the second viscose layer and forms a plain weave.

[0083] The number of single fibers of the first polypropylene fiber is set to 32F; the number of single fibers of the second polypropylene fiber is set to 72F; the number of single fibers of the third polypropylene fiber is set to 32F; and the number of single fibers of the fourth polypropylene fiber is set to 72F.

[0084] The antioxidants of the first adhesive layer and the second adhesive layer are both configured as a mixture of antioxidant 1010 and antioxidant 246 in a mass ratio of 2:1.

[0085] The leveling agents of the first adhesive layer and the second adhesive layer are both set as acrylic leveling agents. The curing agents of the first adhesive layer and the second adhesive layer are both set as bismaleamide.

[0086] The flame retardants of the first adhesive layer and the second adhesive layer include the following raw materials in parts by mass: 20 parts of graphene oxide, 6 parts of alkylphenol polyoxyethylene ether, 20 parts of chlorinated paraffin, 5 parts of magnesium hydroxide, 3 parts of sodium tungstate, 15 parts of polyaminocyclotriphosphazene, 8 parts of ammonium polyphosphate, and 4 parts of diethanolamine.

[0087] The anti-aging agent is set as isopropylated triphenyl phosphate; and the stabilizer is set as calcium stearate.

[0088] The flame retardant masterbatch includes the following raw materials by mass: 30 parts of polyolefin resin, 10 parts of silicone rubber, 6 parts of alkylphenol polyoxyethylene ether, 15 parts of graphene oxide, 15 parts of chlorinated paraffin, 12 parts of coupling agent, 8 parts of dimethyl silicone oil, and 10 parts of zinc stearate. The coupling agent is set to vinyl trimethoxy silane.

[0089] The preparation method of the easy-to-stick wall waterproof membrane for corners comprises the following steps:

[0090] (1) preparing a polypropylene non-woven fabric: weaving two strands of polypropylene fibers with different numbers of single fibers into a double-sided polypropylene non-woven fabric through a weft knitting process, wherein the outer surface of the polypropylene non-woven fabric forms a hexagonal honeycomb shape, and the inner surface of the polypropylene non-woven fabric forms a plain weave shape;

[0091] (2) preparing the adhesive layer: adding epoxy acrylate resin, polyethylene resin, octylphenol aldehyde tackifying resin, antioxidant and flame retardant to the reaction kettle respectively, turning on the stirrer, stirring for 0.5 h at 40° C., adding curing agent, stirring for 0.5 h, vacuuming to -0.1 MPa, stirring at the pressure for 1 h, and then vacuum defoaming and discharging to obtain the adhesive material;

[0092] (3) gluing: applying a viscose material on the inner surface of the first polypropylene non-woven fabric and the inner surface of the second polypropylene non-woven fabric respectively;

[0093] (4) Preparing an intermediate layer: oleic acid amide, polyvinylidene fluoride, anti-aging agent, stabilizer, and flame retardant masterbatch are placed in a high-speed mixer, heated to 80°C, stirred for 10 minutes, and then heated to 90°C, butyl rubber is added, stirred for 20 minutes, and finally heated to 100°C, linear low-density polyethylene is added, stirred at high speed for 10 minutes, discharged, cooled to 60°C, and an intermediate layer material is obtained. The intermediate layer material is placed in the feeding zone of the high-speed mixer, passed through an extruder, and extruded through a die to obtain an intermediate layer sheet;

[0094] (5) Compounding: The first polypropylene non-woven fabric after gluing and the second polypropylene non-woven fabric after gluing are completely compounded with the middle layer sheet through a three-roller machine, passed through a guide roller to a traction machine, trimmed, and entered a winder to obtain a finished waterproof roll.

[0095] Example 4

[0096] Embodiment 1 of the present invention provides a wall corner waterproof roll material, which is formed by connecting a first polypropylene non-woven fabric layer, a first viscose layer, an intermediate layer, a second viscose layer, and a second polypropylene non-woven fabric layer in sequence from top to bottom. The intermediate layer has a layer of 1 mm thick and 650 g / m2 in density embedded in it. 2 Polyethylene fiber cloth.

[0097] The first polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The first polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the second polypropylene fiber with a large single fiber number is used as the inner surface connected to the first viscose layer and forms a plain weave.

[0098] The first adhesive layer includes the following raw materials in parts by mass: 18 parts of epoxy acrylate resin, 15 parts of polyethylene resin, 12 parts of octylphenol formaldehyde tackifying resin, 5 parts of antioxidant, 5 parts of leveling agent, 3 parts of flame retardant, and 8 parts of curing agent.

[0099] The intermediate layer includes the following raw materials in parts by mass: 100 parts of linear low-density polyethylene, 8 parts of oleic acid amide, 20 parts of polyvinylidene fluoride, 20 parts of butyl rubber, 4 parts of anti-aging agent, 4 parts of stabilizer, and 5 parts of flame retardant masterbatch.

[0100] The second adhesive layer includes the following raw materials in parts by mass: 20 parts of epoxy acrylate resin, 10 parts of polyethylene resin, 10 parts of octylphenol formaldehyde tackifying resin, 5 parts of antioxidant, 5 parts of leveling agent, 3 parts of flame retardant, and 8 parts of curing agent.

[0101] The second polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The third polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the fourth polypropylene fiber with a large single fiber number is used as the inner surface connected to the second viscose layer and forms a plain weave.

[0102] The number of single fibers of the first polypropylene fiber is set to 10F; the number of single fibers of the second polypropylene fiber is set to 48F; the number of single fibers of the third polypropylene fiber is set to 10F; and the number of single fibers of the fourth polypropylene fiber is set to 48F.

[0103] The antioxidants of the first adhesive layer and the second adhesive layer are both configured as a mixture of antioxidant 1010 and antioxidant 246 in a mass ratio of 2:1.

[0104] The leveling agents of the first adhesive layer and the second adhesive layer are both set as acrylic leveling agents. The curing agents of the first adhesive layer and the second adhesive layer are both set as bismaleamide.

[0105] The flame retardants of the first adhesive layer and the second adhesive layer include the following raw materials in parts by mass: 15 parts of graphene oxide, 2 parts of alkylphenol polyoxyethylene ether, 10 parts of chlorinated paraffin, 5 parts of magnesium hydroxide, 3 parts of sodium tungstate, 10 parts of polyaminocyclotriphosphazene, 5 parts of ammonium polyphosphate, and 2 parts of diethanolamine.

[0106] The anti-aging agent is set as isopropylated triphenyl phosphate; and the stabilizer is set as calcium stearate.

[0107] The flame retardant masterbatch includes the following raw materials by mass: 30 parts of polyolefin resin, 8 parts of silicone rubber, 2 parts of alkylphenol polyoxyethylene ether, 10 parts of graphene oxide, 10 parts of chlorinated paraffin, 8 parts of coupling agent, 5 parts of dimethyl silicone oil, and 6 parts of zinc stearate. The coupling agent is set to vinyl trimethoxy silane.

[0108] The preparation method of the easy-to-stick wall waterproof membrane for corners comprises the following steps:

[0109] (1) preparing a polypropylene non-woven fabric: weaving two strands of polypropylene fibers with different numbers of single fibers into a double-sided polypropylene non-woven fabric through a weft knitting process, wherein the outer surface of the polypropylene non-woven fabric forms a hexagonal honeycomb shape, and the inner surface of the polypropylene non-woven fabric forms a plain weave shape;

[0110] (2) Preparing an adhesive layer: adding epoxy acrylate resin, polyethylene resin, octylphenol aldehyde tackifying resin, antioxidant, and flame retardant to a reaction kettle respectively, turning on the stirrer, stirring at 40° C. for 1 h, adding a curing agent, stirring for 0.5 h, evacuating to -0.1 MPa, stirring at the pressure for 2 h, and then vacuum defoaming and discharging to obtain an adhesive material;

[0111] (3) gluing: applying a viscose material on the inner surface of the first polypropylene non-woven fabric and the inner surface of the second polypropylene non-woven fabric respectively;

[0112] (4) Preparing an intermediate layer: placing oleic acid amide, polyvinylidene fluoride, an anti-aging agent, a stabilizer, and a flame retardant masterbatch into a high-speed mixer, heating the mixture to 80° C., stirring for 15 min, continuing to heat the mixture to 90° C., adding butyl rubber, stirring for 30 min, and finally heating the mixture to 100° C., adding linear low-density polyethylene, stirring at high speed for 15 min, discharging the mixture, and cooling the mixture to 50° C. to obtain an intermediate layer material. The intermediate layer material is placed in the feeding zone of the high-speed mixer, passed through an extruder, and extruded through a die to obtain an intermediate layer sheet;

[0113] (5) Compounding: The first polypropylene non-woven fabric after gluing and the second polypropylene non-woven fabric after gluing are completely compounded with the middle layer sheet through a three-roller machine, passed through a guide roller to a traction machine, trimmed, and entered a winder to obtain a finished waterproof roll.

[0114] Table 1 is the performance test results of waterproof membrane

[0115]

[0116] In summary, the waterproof membrane of the present invention has good waterproof performance, chemical resistance, weather resistance and excellent mechanical strength, has a smaller expansion coefficient, is light in weight and has good flame retardant properties. The waterproof membrane can fit tightly to the wall better and faster, and can prevent the waterproof membrane from detaching and folding off the cement-coated wall, saving time and effort and improving the installation efficiency of the waterproof membrane.

[0117] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An easy-to-stick waterproof membrane for corners, characterized in that: The waterproof roll material is formed by sequentially connecting a first polypropylene non-woven fabric layer, a first viscose layer, an intermediate layer, a second viscose layer and a second polypropylene non-woven fabric layer from top to bottom; The first polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers, wherein the first polypropylene fibers with a small single fiber number are used as the outer surface and form a hexagonal honeycomb shape, and the second polypropylene fibers with a large single fiber number are used as the inner surface connected to the first viscose layer and form a plain weave shape; The first adhesive layer comprises the following raw materials in parts by mass: 10-20 parts of epoxy acrylate resin, 10-20 parts of polyethylene resin, 10-20 parts of octylphenol tackifying resin, 5-8 parts of antioxidant, 5-8 parts of leveling agent, 1-5 parts of flame retardant, and 3-8 parts of curing agent; The intermediate layer comprises the following raw materials in parts by mass: 50-150 parts of linear low-density polyethylene, 7-9 parts of oleic acid amide, 20-30 parts of polyvinylidene fluoride, 20-25 parts of butyl rubber, 4-8 parts of anti-aging agent, 4-8 parts of stabilizer, and 4-8 parts of flame retardant masterbatch; The second adhesive layer comprises the following raw materials in parts by mass: 10-20 parts of epoxy acrylate resin, 10-20 parts of polyethylene resin, 10-20 parts of octylphenol tackifying resin, 5-8 parts of antioxidant, 5-8 parts of leveling agent, 1-5 parts of flame retardant, and 3-8 parts of curing agent; The second polypropylene non-woven fabric layer is formed by weft knitting two strands of polypropylene fibers with different single fiber numbers. The third polypropylene fiber with a small single fiber number is used as the outer surface and forms a hexagonal honeycomb shape, and the fourth polypropylene fiber with a large single fiber number is used as the inner surface connected to the second viscose layer and forms a plain weave.

2. The easy-to-stick waterproof membrane for corners according to claim 1, characterized in that: The number of single fibers of the first polypropylene fiber is set to 6F-32F; the number of single fibers of the second polypropylene fiber is set to 48F-72F; the number of single fibers of the third polypropylene fiber is set to 6F-32F; and the number of single fibers of the fourth polypropylene fiber is set to 48F-72F.

3. The easy-to-stick waterproof membrane for corners according to claim 1, characterized in that: The antioxidants of the first adhesive layer and the second adhesive layer are both configured to be a mixture of antioxidant 1010 and antioxidant 246 in a mass ratio of 2:1; The leveling agents of the first adhesive layer and the second adhesive layer are both set as acrylic leveling agents or silicone leveling agents; The curing agents of the first adhesive layer and the second adhesive layer are both set to at least one of ethylenediamine, hexamethylenediamine and bismaleimide.

4. The easy-to-stick waterproof membrane for corners according to claim 1, characterized in that: The flame retardants of the first adhesive layer and the second adhesive layer include the following raw materials in parts by mass: 15-20 parts of graphene oxide, 2-6 parts of alkylphenol polyoxyethylene ether, 10-20 parts of chlorinated paraffin, 2-5 parts of magnesium hydroxide, 1-3 parts of sodium tungstate, 10-15 parts of polyaminocyclotriphosphazene, 5-8 parts of ammonium polyphosphate, and 2-4 parts of diethanolamine.

5. The easy-to-stick waterproof membrane for corners according to claim 1, characterized in that: The anti-aging agent is set as isopropylated triphenyl phosphate; and the stabilizer is set as calcium stearate.

6. The easy-to-stick waterproof membrane for corners according to claim 1, characterized in that: The flame retardant masterbatch comprises the following raw materials in parts by mass: 20-30 parts of polyolefin resin, 8-10 parts of silicone rubber, 2-6 parts of alkylphenol polyoxyethylene ether, 10-15 parts of graphene oxide, 10-15 parts of chlorinated paraffin, 8-12 parts of coupling agent, 5-8 parts of dimethyl silicone oil, and 6-10 parts of zinc stearate.

7. The easy-to-stick waterproof membrane for corners according to claim 6, characterized in that: The coupling agent is vinyltrimethoxysilane.

8. The easy-to-stick waterproof membrane for corners according to claim 1, characterized in that: The interior of the intermediate layer is also embedded with at least one layer of a 0.5-2 mm thick and a density of 500-650 g / m 2 Polyethylene fiber cloth.

9. A method for preparing an easy-to-stick waterproof roll for corners according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) preparing a polypropylene non-woven fabric: weaving two strands of polypropylene fibers with different numbers of single fibers into a double-sided polypropylene non-woven fabric through a weft knitting process, wherein the outer surface of the polypropylene non-woven fabric forms a hexagonal honeycomb shape, and the inner surface of the polypropylene non-woven fabric forms a plain weave shape; (2) preparing the adhesive layer: adding epoxy acrylate resin, polyethylene resin, octylphenol aldehyde tackifying resin, antioxidant and flame retardant to the reaction kettle respectively, turning on the stirrer, stirring for 0.5 to 2 hours at a temperature of 25 to 40° C., adding the curing agent, stirring for 0.5 to 1 hour, evacuating to -0.1 MPa, stirring at the pressure for 1 to 2 hours, and then performing vacuum defoaming and discharging to obtain the adhesive material; (3) gluing: applying a viscose material on the inner surface of the first polypropylene non-woven fabric and the inner surface of the second polypropylene non-woven fabric respectively; (4) Preparing an intermediate layer: placing oleic acid amide, polyvinylidene fluoride, an anti-aging agent, a stabilizer, and a flame retardant masterbatch into a high-speed mixer, heating the mixture to 70-80°C, stirring the mixture for 10-20 minutes, and then heating the mixture to 85-90°C, adding butyl rubber, stirring the mixture for 20-30 minutes, and finally heating the mixture to 95-100°C, adding linear low-density polyethylene, stirring the mixture at high speed for 10-15 minutes, discharging the mixture, and cooling the mixture to 45-60°C to obtain an intermediate layer material. The intermediate layer material is placed in the feeding zone of the high-speed mixer, and then extruded through an extruder and a die to obtain an intermediate layer sheet. (5) Compounding: The first polypropylene non-woven fabric after gluing and the second polypropylene non-woven fabric after gluing are completely compounded with the middle layer sheet through a three-roller machine, passed through a guide roller to a traction machine, trimmed, and entered a winder to obtain a finished waterproof roll.

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