A high strength puncture resistant composite film

Abstract

The application discloses a high-strength puncture-resistant composite film and relates to the technical field of composite films.The high-strength puncture-resistant composite film comprises, in sequence, a surface protection layer, a first reaction layer, a second reaction layer, a third reaction layer and a bottom protection layer.The first reaction layer is made of nylon 6 and an amino silane coupling agent.The second reaction layer is made of thermoplastic polyurethane, and the second reaction layer is internally provided with a containing channel and cyano acrylate located in the containing channel.The third reaction layer comprises polypropylene, calcium carbonate and an imidazole ionic liquid.When the composite film is punctured, the cyano acrylate and the amino silane coupling agent are in contact and a curing reaction occurs, so that the puncture object is fixed and clamped at the position of passing through the first reaction layer;imidazole ionic liquid is in contact with the cyano acrylate, a polymerization reaction occurs, and a polymer is formed;calcium carbonate is in contact with a percolate, CO2 is released, the polymer is forced to press into a puncture hole, and the puncture object is further detained, so that the puncture-resistant effect of the composite film is better.

Description

Technical Field

[0001] This invention relates to the field of composite membrane technology, and in particular to a high-strength puncture-resistant composite membrane. Background Technology

[0002] Puncture-resistant composite membranes are widely used in many fields with stringent material performance requirements due to their high strength, tear resistance, and leak-proof properties. For example, geomembranes laid in landfills need to prevent punctures from sharp objects (metal, glass) that could cause leachate contamination of the soil and groundwater. Existing geomembranes have poor puncture resistance and are easily punctured, leading to leachate leakage.

[0003] The information disclosed in the background section of this application is intended only to enhance the understanding of the general background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] The main objective of this invention is to provide a high-strength, puncture-resistant composite membrane, which aims to solve the technical problem that existing geomembranes have poor puncture resistance and are easily punctured, leading to leachate leakage.

[0005] To achieve the above objectives, the present invention proposes a high-strength puncture-resistant composite membrane, comprising a surface protective layer, a first reactive layer, a second reactive layer, a third reactive layer, and a bottom protective layer arranged sequentially; the number of second reactive layers is at least one; the first reactive layer is made of nylon 6 and an aminosilane coupling agent; the second reactive layer is made of thermoplastic polyurethane, and the second reactive layer has a containment channel and cyanoacrylate located within the containment channel; the third reactive layer comprises polypropylene, calcium carbonate, and an imidazole ionic liquid.

[0006] Optionally, the receiving channel includes a main channel and branch channels that are interconnected; the main channel is distributed in an Archimedean spiral pattern, and there are multiple branch channels, each of which extends radially from the center of the main channel; the pitch of the main channel is less than or equal to 5 mm.

[0007] Optionally, there are two second reaction layers, both located between the first reaction layer and the third reaction layer; the main channels within the two second reaction layers are staggered, and the branch channels within the two second reaction layers are staggered.

[0008] Optionally, the main channel and the branch channel have the same aperture, and the aperture at the connection between the main channel and the branch channel is smaller than the aperture of the main channel or the branch channel.

[0009] Optionally, the surface protective layer is made of ultra-high molecular weight polyethylene and nano-silicon carbide, and the side of the surface protective layer away from the first reaction layer has a shingled scale structure.

[0010] Optionally, the surface of the scale structure is provided with a fluorosilane coating.

[0011] Optionally, the interior of the first reaction layer is provided with a glass fiber mesh.

[0012] Optionally, the interior of the first reaction layer is provided with silver zeolite nanoparticles.

[0013] Optionally, the surface of the third reaction layer near the bottom protective layer is coated with a nano-SiO2 coating.

[0014] Optionally, the materials used to make the bottom protective layer include asphalt, waste tire rubber powder, montmorillonite nanosheets, and antioxidants.

[0015] This invention proposes a high-strength, puncture-resistant composite membrane. The membrane is laid in a landfill, with the surface protective layer in contact with the waste and the bottom protective layer in contact with the landfill bottom. Sharp objects (metal, glass) sequentially penetrate the surface protective layer, the first reaction layer, the second reaction layer, the third reaction layer, and the bottom protective layer. When the object penetrates the second reaction layer, cyanoacrylate within the containment channel flows to the upper and lower surfaces of the second reaction layer and contacts the first and third reaction layers. An aminosilane coupling agent provides amino groups, and the cyanoacrylate reacts with the aminosilane coupling agent to solidify, fixing the object at the point of penetration through the first reaction layer and delaying the puncture process. If leachate from the landfill flows from the puncture hole to the third reaction layer, imidazole ions react with the cyanoacrylate to form a polymer. Calcium carbonate in the third reaction layer releases CO2 upon contact with the leachate; the expanding gas compresses the polymer formed by the cyanoacrylate, pushing the polymer into the puncture hole and further retaining the object. This results in a superior puncture resistance for the composite membrane. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the high-strength puncture-resistant composite membrane according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1Enlarged view of point A in the middle;

[0019] Figure 3 This is a schematic diagram of the structure of the second reaction layer in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of another structure of the second reaction layer in an embodiment of the present invention.

[0021] Icons: 100, surface protective layer; 101, scales; 200, first reaction layer; 300, second reaction layer; 301, containment channel; 400, third reaction layer; 500, bottom protective layer. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Furthermore, the use of terms such as "horizontal" or "vertical" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0028] refer to Figures 1-4 A high-strength puncture-resistant composite membrane includes a surface protective layer 100, a first reaction layer 200, a second reaction layer 300, a third reaction layer 400, and a bottom protective layer 500 arranged sequentially; the number of second reaction layers 300 is at least one; the first reaction layer 200 is made of nylon 6 and an aminosilane coupling agent; the second reaction layer 300 is made of thermoplastic polyurethane, and the second reaction layer 300 has a receiving channel 301 inside and cyanoacrylate located in the receiving channel 301; the third reaction layer 400 is made of polypropylene, calcium carbonate, and imidazole ionic liquid.

[0029] The composite membrane is laid in a landfill. The surface protective layer 100 contacts the waste, and the bottom protective layer 500 contacts the bottom of the landfill. Sharp objects (metal, glass) from the waste sequentially penetrate the surface protective layer 100, the first reaction layer 200, the second reaction layer 300, the third reaction layer 400, and the bottom protective layer 500. When the punctured object penetrates the second reaction layer 300, cyanoacrylate in the receiving channel 301 flows to the upper and lower surfaces of the second reaction layer 300 and contacts the first reaction layer 200 and the third reaction layer 400. The aminosilane coupling agent can provide amino and cyano groups. When acrylate comes into contact with aminosilane coupling agent, a curing reaction occurs, fixing the puncture material at the point where it passes through the first reaction layer 200, thus delaying the puncture process. If leachate from the landfill flows from the puncture hole to the third reaction layer 400, imidazole ions will polymerize upon contact with cyanoacrylate, forming a polymer. Calcium carbonate in the third reaction layer 400 releases CO2 upon contact with the leachate. The expanding gas will compress the polymer formed by the cyanoacrylate, forcing the polymer into the puncture hole and further retaining the puncture material, resulting in a better puncture resistance of the composite membrane.

[0030] It should be noted that the imidazole ionic liquid is dispersed in polypropylene in a "sea-island structure". The imidazole ionic liquid acts as an alkaline catalyst to trigger the anionic polymerization reaction of cyanoacrylate.

[0031] Cyanoacrylate is liquid at room temperature.

[0032] As an optional implementation, in the first reaction layer 200, nylon 6 is used as the matrix material and its proportion can be more than 98%, for example 98.5%, and the proportion of aminosilane coupling agent can be more than 1%.

[0033] Nylon 6 possesses high tensile strength and toughness, effectively slowing down the penetration speed of the puncture, thus buying time for the release of cyanoacrylate from the second reaction layer 300. Furthermore, Nylon 6 exhibits good resistance to organic acids and salt ions in the leachate, preventing interlayer delamination due to corrosion. Compared to other engineering plastics (such as PEEK), Nylon 6 is lower in cost and easier to process, making it suitable for large-scale production.

[0034] The manufacturing process of the first reaction layer 200 can be as follows:

[0035] Nylon 6 and aminosilane coupling agents are melt-blended in an extruder at a temperature maintained between 240°C and 260°C, and then extruded into a film. Nylon 6 is a polymer compound produced by the polymerization of caprolactam monomers, and its molecular chain contains highly polar amide groups. The siloxane portion (-Si-O-) of the aminosilane coupling agent is less polar, exhibiting a compatibility gradient with the polar groups of nylon 6. During melt blending and cooling, aminosilanes tend to migrate to the surface of nylon 6, forming an amino-enriched layer to facilitate reaction with cyanoacrylates.

[0036] As an optional implementation, the surface of the first reaction layer 200 can be punched with a CO2 laser to create micropores with a diameter of 50 μm. The diameter of the micropores can be 50 μm and the pore density can be 100 pores / cm², which increases the surface roughness and specific surface area, thereby increasing the contact area between the cyanoacrylate and the first reaction layer 200.

[0037] In other embodiments, the first reaction layer 200 can be placed in a 5% NaOH solution, and the surface of nylon 6 can be lightly etched by NaOH to form micropores with a diameter of about 50 μm (density 100 pores / cm²).

[0038] As an optional implementation, the receiving channel 301 includes a main channel and branch channels that are interconnected; the main channel is distributed in an Archimedean spiral pattern, and there are multiple branch channels, each of which extends radially from the center of the main channel; the pitch of the main channel is less than or equal to 5 mm.

[0039] Specifically, the pitch of the main channel can be set as needed, for example, 2mm; the branch channels can be distributed at intervals of 30° to 45°, thus forming a "spider web" structure between the main channel and the branch channels. When the puncture object passes through the second reaction layer 300, the aperture of the puncture object is larger than the pitch of the main channel. At this time, the puncture object will puncture the receiving channel 301 from any position when it passes through the second reaction layer 300, causing the cyanoacrylate in the receiving channel 301 to be released.

[0040] In some embodiments, the aperture of the branch channel can be 50% to 70% of the aperture of the main channel.

[0041] As an optional implementation, there are two second reaction layers 300, both located between the first reaction layer 200 and the third reaction layer 400; the main channels in the two second reaction layers 300 are staggered, and the branch channels in the two second reaction layers 300 are staggered.

[0042] To avoid the possibility that the puncture object might pass through the gap between the main channels when there is only one second reaction layer 300, resulting in a "blind spot" in the puncture, the second reaction layer 300 is set to two layers, and the main channel and the branch channel are arranged in a staggered manner, so that the puncture object can easily puncture the receiving channel 301.

[0043] In another alternative implementation, the number of second reaction layers 300 can be one, and the main channel can be a double helix structure, that is, arranged alternately in clockwise and counterclockwise directions.

[0044] As an optional implementation, the main channel and the branch channel have the same aperture, and the aperture at the connection between the main channel and the branch channel is smaller than the aperture of the main channel or the branch channel, so that the second reaction layer 300 is thicker at the connection between the main channel and the branch channel, thereby increasing the thickness of the second reaction layer 300 and preventing leakage of cyanoacrylate from the containment channel 301.

[0045] The raw materials for the second reaction layer 300 include thermoplastic polyurethane (TPU) and cyanoacrylate. The manufacturing process for the second reaction layer 300 can be as follows:

[0046] Step S301: 3D print water-soluble PVA material to form a main channel + radial branch channel structure to obtain a PVA template;

[0047] Step S202: The PVA template is sandwiched between two TPU films, and then hot-pressed (temperature can be 160℃, pressure can be 5MPa) to fuse them together to obtain the first preformed film.

[0048] Step S203: Immerse the pre-formed membrane in a 60°C water bath to dissolve PVA, forming hollow channels to obtain the second pre-formed membrane;

[0049] Step S304: Place the second pre-formed membrane in a vacuum chamber (-0.1MPa) and inject cyanoacrylate until the channel is filled;

[0050] Step S305: Use UV-curable adhesive (such as Loctite 352) to seal the injection port of the hollow channel to obtain the second reaction layer 300.

[0051] As an optional implementation, the surface protective layer 100 is made of ultra-high molecular weight polyethylene (UHMWPE) and nano-silicon carbide (SiC), and the side of the surface protective layer 100 away from the first reaction layer 200 is provided with a shingled scale structure.

[0052] Manufacturing process of surface protective layer 100:

[0053] Step S101: Melt blend UHMWPE and SiC in a twin-screw extruder (temperature 200~220℃), then extrude and granulate.

[0054] Step S102: Preheat the mold to 180°C, spread the granules into the mold with the groove of scale 101, hot press under 10MPa pressure for 15 minutes, cool and solidify and then demold.

[0055] Step S103: Deposit a nano-SiC layer (10~20μm thick) on the surface of the scale 101 to obtain the surface protective layer 100.

[0056] The scales 101 of the surface protective layer 100 can have an inclination angle of 25°.

[0057] When the surface protective layer 100 comes into direct contact with the waste, and a hard object contacts the inclined surface of the scales 101 of the surface protective layer 100, the lateral component of the force causes the puncture object to slip, and some of the puncture energy is consumed. When the undeflected puncture object penetrates the scales 101, a non-linear crack is formed due to the overlapping structure (similar to the impact resistance mechanism of pangolin scales, similar to a Z-shape), increasing the crack propagation resistance by 30%. SiC particles on the surface of the surface protective layer 100 fall off, but the matrix UHMWPE is not completely fractured: energy dissipation: approximately 40% of the initial puncture kinetic energy is consumed by deflection and crack propagation.

[0058] As an alternative implementation, the surface of the scale 101 structure is provided with a fluorosilane coating, such as FAS-17, with a contact angle >150°.

[0059] Fluorosilane coatings typically have the following properties:

[0060] 1. Water resistance: Fluorosilane coating can effectively prevent moisture penetration, making it suitable for applications requiring moisture protection;

[0061] 2. Oil resistance: The coating surface is not easily adhered to by oil stains, making it easy to clean and maintain;

[0062] 3. Chemical resistance: Fluorosilane coatings are resistant to a variety of chemicals and are suitable for use in corrosive environments;

[0063] 4. Wear resistance: The coating has high hardness, which can resist physical wear and extend the service life of the material.

[0064] As an optional implementation, the surface protective layer 100 can be filled with microencapsulated phase change materials, such as paraffin / fatty acid. These microencapsulated phase change materials absorb and store heat during the day and release heat at night, preventing the composite membrane from aging due to excessive temperature differences. The composite membrane of this embodiment can be used in projects in cold regions to reduce membrane delamination caused by freeze-thaw cycles.

[0065] As an optional implementation, the first reaction layer 200 is provided with a glass fiber mesh inside. Glass fiber is a high-performance inorganic non-metallic material with many varieties. Its advantages include good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. Glass fiber can improve the tensile strength of the first reaction layer 200.

[0066] As an optional implementation, the interior of the first reaction layer 200 is provided with silver zeolite nanoparticles.

[0067] Silver zeolite is a composite material made by embedding silver ions into the microporous structure of zeolite. Zeolite itself is a natural or synthetic porous aluminosilicate mineral with a crystal structure composed of SiO4 and AlO4 tetrahedra, forming regular nanoscale channels. Silver ions are fixed to the zeolite framework through ion exchange or chemical loading, giving the material unique properties. Silver-containing zeolite can effectively adsorb volatile iodides (such as radioactive iodine in nuclear waste treatment), converting them into silver iodide and fixing them within the zeolite channels, resulting in a high decontamination coefficient. Studies have found that the silver in silver-containing zeolite exists in the form of a 0.5 valent cation, which is electronically unstable and can destroy bacterial cells through strong oxidation, making it a low-cost and harmless antibacterial material.

[0068] In this embodiment, silver zeolite can be used to inhibit the adhesion of microorganisms in the leachate.

[0069] As an optional implementation, the raw materials for the third reaction layer 400 are: polypropylene (PP) particles, calcium carbonate and imidazole ionic liquid, with polypropylene (PP) particles accounting for 68%, calcium carbonate being nano-sized and accounting for 30%, and imidazole ionic liquid accounting for 2%.

[0070] The manufacturing process steps of the third reaction layer 400:

[0071] S401, polypropylene granules, calcium carbonate and imidazole ionic liquid are mixed in a mixer (temperature can be 190℃, speed can be 50rpm) and then granulated.

[0072] S402. The granules are placed in an extruder and extruded to form a film, creating the third reaction layer 400.

[0073] S403. Spray a nano-SiO2 coating onto the surface of the third reaction layer 400.

[0074] Although imidazole ionic liquids are dispersed in an island structure, during the extrusion film formation process, due to the incompatibility of the materials, namely the incompatibility between imidazole ionic liquids and polypropylene, imidazole ionic liquids may tend to migrate to the surface of the third reaction layer 400 and form a surface enrichment layer.

[0075] When imidazole ionic liquids come into contact with cyanoacrylate, a polymerization reaction occurs, forming a polymer. When calcium carbonate in the third reaction layer 400 comes into contact with the leachate, it releases CO2. The expansion of the gas will squeeze the polymer formed by the cyanoacrylate, and the polymer will be forced into the puncture hole, further retaining the puncture material.

[0076] As an optional implementation, the surface of the third reaction layer 400 near the bottom protective layer 500 is coated with a nano-SiO2 coating. The SiO2 coating has a porous structure and a relatively rough surface, which can guide the cyanoacrylate to diffuse laterally along the coating from the puncture hole as the center, covering a larger pore area. The CO2 gas generated by the reaction of calcium carbonate and leachate is directionally guided by the porous structure of SiO2 to form a "microbubble reinforcement". SiO2 is a rigid material, and the polymer formed by the contact of imidazole ionic liquid with cyanoacrylate, SiO2 and calcium carbonate form a composite structure of rigid skeleton and flexible matrix, which significantly improves the compressive strength.

[0077] As an alternative implementation, the bottom protective layer 500 is made of materials including asphalt, waste tire rubber powder, montmorillonite nanosheets, and antioxidants.

[0078] The viscoelasticity of asphalt forms an adhesion layer about 0.5 mm thick on the surface of the punctured object, which consumes the vibration energy of the punctured object and reduces fatigue damage.

[0079] Waste tire rubber powder particles, as an elastic phase, enhance the elastic recovery rate of asphalt. The sulfur element in the rubber powder reacts with asphalt free radicals to form a three-dimensional network, further hindering punctures.

[0080] Montmorillonite nanosheets are dispersed in asphalt in an exfoliated state, with the interlayer spacing increased to 3-5 nm, forming a "maze effect" that extends the leachate permeation path by 10 times. In addition, montmorillonite nanosheets can improve the compressive strength of asphalt.

[0081] Antioxidants can prevent the oxidation chain reaction of asphalt; when puncture friction generates heat, antioxidants inhibit the oxidation of asphalt at high temperatures, keeping the asphalt viscoelastic.

[0082] Manufacturing process of bottom protective layer 500:

[0083] S501. Waste tire rubber powder is treated with microwave desulfurization (power 800W, time 5 minutes) to improve interfacial compatibility.

[0084] S502. The desulfurized waste tire rubber powder is immersed in a 5% silane coupling agent (KH-570) ethanol solution and stirred at 60°C for 2 hours to obtain activated rubber powder.

[0085] S503. Disperse montmorillonite nanosheets in deionized water (concentration 5%), add cetyltrimethylammonium bromide (CTAB, 30% of the mass of MMT), stir at 80°C for 24 hours to obtain organically modified nano-montmorillonite;

[0086] S504, centrifuge and wash until no Br remains. - (Silver nitrate detection), grind after drying;

[0087] S505. Add molten asphalt (180℃) to a high-speed shear emulsifier (3000rpm), slowly add activated rubber powder, and continue shearing for 1 hour to obtain an asphalt-rubber powder system.

[0088] S506. Add organically modified nano-montmorillonite to the asphalt-rubber powder system, increase the rotation speed to 5000 rpm, and shear for 30 minutes.

[0089] S507, cool to 160℃, add pre-dispersed antioxidant, stir at low speed (500rpm) for 15 minutes to avoid high temperature decomposition, and obtain the pre-made bottom material;

[0090] S508. Use a doctor blade coating machine to coat the pre-made bottom material onto the release paper (PET film), and roll it with a cooling roller, with the temperature controlled at 25°C.

[0091] S509, cured at room temperature for 48 hours, to complete stress relaxation and structural stability, resulting in a bottom protective layer of 500.

[0092] The manufacturing process of composite membranes:

[0093] S1. Align the surface protective layer 100 with the first reaction layer 200 and bond them together by hot pressing (temperature 180℃, pressure 2MPa, time 5 minutes);

[0094] S2, the second reaction layer 300 and the third reaction layer 400 are interlocked by laser perforation:

[0095] a. Use a CO2 laser to drill holes with a diameter of 0.5 mm (5 mm spacing) on ​​the surface of the third reaction layer 400;

[0096] b. Hot pressing (temperature 150℃, pressure 3MPa) causes the melt of the second reaction layer 300 to flow into the holes of the third reaction layer 400, and after cooling, an anchor structure is formed.

[0097] S3, Final Five-Layer Composite:

[0098] A. Stack the surface protective layer 100, the first reaction layer 200, the second reaction layer 300, the third reaction layer 400 and the bottom protective layer 500 in sequence;

[0099] B. Hot pressing (temperature 140℃, pressure 5MPa), time controlled within 8 minutes;

[0100] C. Use water-cooled rollers to roll the composite film, so that the temperature of the composite film can be quickly cooled down to below 50℃;

[0101] D. Edge sealing: Weld along the membrane edge to form a 10mm wide sealing strip; apply silicone sealant to prevent leachate from entering the interlayer from the side.

[0102] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A high-strength puncture-resistant composite film, characterized by, The surface protection layer, the first reaction layer, the second reaction layer, the third reaction layer and the bottom protection layer are arranged in sequence; the number of the second reaction layer is at least one; the material of the first reaction layer comprises nylon 6 and amino silane coupling agent; the second reaction layer is made of thermoplastic polyurethane, and the second reaction layer is internally provided with a containing channel and cyano acrylate in the containing channel; the material of the third reaction layer comprises polypropylene, calcium carbonate and imidazole ionic liquid; The containing channel comprises a main channel and branch channels which are in communication with each other; the main channel is in the form of an Archimedes spiral line, and the number of the branch channels is multiple, and each branch channel extends radially from the center of the main channel; the pitch of the main channel is less than or equal to 5 mm; The surface protection layer is made of ultrahigh molecular weight polyethylene and nano silicon carbide, and the surface protection layer is provided with a shingle type scale structure on the side away from the first reaction layer; The surface of the scale structure is provided with a fluorosilane coating; The material of the bottom protection layer comprises asphalt, waste tire rubber powder, montmorillonite nanosheet and antioxidant.

2. The high-strength puncture-resistant composite film according to claim 1, wherein The number of the second reaction layer is two, and the two second reaction layers are located between the first reaction layer and the third reaction layer; the main channels in the two second reaction layers are arranged in a staggered manner, and the branch channels in the two second reaction layers are arranged in a staggered manner.

3. The high-strength puncture-resistant composite film according to claim 1, wherein The pore diameter of the main channel and the branch channel is the same, and the pore diameter of the connection part of the main channel and the branch channel is smaller than the pore diameter of the main channel or the branch channel.

4. The high-strength, puncture-resistant composite film of claim 1, wherein, The first reaction layer is internally provided with a glass fiber grid.

5. The high-strength, puncture-resistant composite film of claim 1, wherein, The first reaction layer is internally provided with silver zeolite nanoparticles.

6. The high-strength, puncture-resistant composite film of claim 1, wherein, The surface of the third reaction layer close to the bottom protection layer is sprayed with a nano SiO2 coating.

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