Fabric-reinforced polymer composite and method of manufacture

Abstract

The application provides a kind of fabric reinforced polymer composite material and preparation method, the method is first by hydroentanglement process thermoplastic fiber web is fixed on the two sides of fabric, and hydroentanglement makes thermoplastic fiber in thermoplastic fiber web and fabric interpenetration and hold together, and combine firmly;After drying, the polymer surface film is covered on the two sides of base cloth layer, and the polymer surface film is combined with base cloth layer by heating, because the surface of base cloth layer is the same material as the composition of polymer surface film, the material remains consistent, it is convenient for hot forming fusion, thereby increasing the peel strength, and improving the adhesion strength of composite material coating.Moreover, when the hydroentanglement medium is polymer solution, the polymer solution will remain in the pores of fabric and thermoplastic fiber web during the hydroentanglement process, and when subsequent drying and heating, the polymer in the pores will be integrated with the thermoplastic fiber web, thereby further enhancing the peel strength.

Description

Technical Field

[0001] This invention belongs to the field of composite materials, and in particular relates to a fabric-reinforced polymer composite material and its preparation method. Background Technology

[0002] As the application fields of fabric-reinforced polymer composites expand, the performance requirements of polymer composites are also increasing. Conventional polyester and nylon fabric-reinforced polymers cannot meet the mechanical performance requirements of materials for water rescue inflatable boats in terms of tensile strength, tear resistance, and puncture resistance.

[0003] Using aramid fabrics and ultra-high molecular weight polyethylene fabrics as reinforcements to prepare composite materials can improve the mechanical properties of composite materials in terms of tensile strength, tear resistance, and puncture resistance. Patent CN202211200389.5 proposes a lightweight puncture-resistant mesh fabric, mentioning the use of plain woven fabrics of polyester, nylon, or aramid as reinforcements. Patent CN202320167564.9 proposes an impact-resistant glass fiber mesh fabric, mentioning that the mesh fabric is composed of a glass fiber mesh layer, an ultra-high molecular weight polyethylene puncture-resistant layer, a carbon fiber impact-resistant layer, and a PVC film layer. However, when using aramid fabrics or ultra-high molecular weight polyethylene fabrics, which have smooth and inert surfaces, as reinforcements, the peel strength of the fabric after being combined with these materials is poor, which limits its application.

[0004] To improve interfacial adhesion strength, interfacial modification is commonly used. For example, CN201710974656.7 describes plasma treatment of aramid fibers followed by treatment with an epoxy resin containing N-glycidyl groups at a mass content of 0.2%–5%. The modified aramid fiber-epoxy resin interfacial shear strength increased by 30% compared to before modification. Related academic literature often reports on chemical treatments of aramid fibers to improve surface roughness and surface polarity, such as Doi.org / 10.1002 / app.5. Reference 1011, Doi.org / 10.1016 / j.polymer.2021.124414, describes a method that polymerizes tannic acid, pyrogallol, and other compounds with polyethyleneimine in an alkaline solution, depositing them onto the surface of aramid fibers to introduce functional groups such as hydroxyl and amino groups. Further, aramid nanofibers are attached to the aramid fiber surface to improve its physical roughness. However, this method offers limited improvement in the interfacial strength between aramid and the polymer, with an increase in interfacial shear strength of less than 50%, failing to meet the requirement of a peel strength higher than 60 N / 25 mm. Therefore, a method is needed to enhance the peel strength of composite filament fabrics with smooth, inert surfaces. Summary of the Invention

[0005] In view of this, the present invention aims to provide a fabric-reinforced polymer composite material and a preparation method thereon to solve the above problems.

[0006] To achieve the above objectives, the technical solution of the present invention is implemented as follows:

[0007] A method for preparing a fabric-reinforced polymer composite material, the method comprising the following steps:

[0008] 1) Preparation of thermoplastic fiber web

[0009] Thermoplastic fiber web is obtained by carding thermoplastic fibers into a web using a carding machine;

[0010] 2) Prepare a polymer solution in which the polymer composition is the same as that of the thermoplastic fiber;

[0011] 3) Hydroentangling treatment

[0012] A filament fabric with a smooth, inert surface is laminated with a thermoplastic fiber web, with the fabric positioned between the upper and lower layers of thermoplastic fiber web. An N-stage hydroentangling process is used to reinforce the upper and lower layers of thermoplastic fiber web and the fabric, achieving the interpenetration and cohesion of the thermoplastic fibers in the web onto the fabric, thus producing a thermoplastic fiber-fabric composite layer I; wherein N≥1, and the hydroentangling medium is a polymer solution or water;

[0013] 4) Drying treatment

[0014] The thermoplastic fiber and fabric composite layer I is dried in an oven to obtain a base fabric layer with a polymer film;

[0015] 5) Preparation of composite materials

[0016] The base fabric layer and the polymer surface film are preheated separately. Then, the polymer surface film is placed on both sides of the base fabric layer and bonded to the upper and lower layers of the base fabric layer respectively. The bonding strength is further increased by two sets of heating rollers, and finally, a fabric-reinforced polymer composite material is obtained. The composition of the polymer surface film is the same as that of the thermoplastic fiber.

[0017] Furthermore, the areal density of the thermoplastic fiber web is 30 g / m². 2 -100g / m 2 .

[0018] Furthermore, between steps 3) and 4), there is an impregnation process, namely, the thermoplastic fiber and fabric composite layer I is impregnated with a polymer solution in a glue tank, and then the excess polymer solution is squeezed out by a pressure roller to obtain the thermoplastic fiber and fabric composite layer II; during drying, the obtained thermoplastic fiber and fabric composite layer II is dried in an oven to obtain a base fabric layer with a polymer film.

[0019] Furthermore, the hydroentanglement medium is a polymer solution.

[0020] Furthermore, the thermoplastic fiber is one or more of PVC, PVA, EVA, PP, and PE, or a mixture thereof.

[0021] Furthermore, the polymer solution is a mixed solution composed of one or more of PVC, PVA, EVA, PP, and PE, along with the plasticizer diisononyl phthalate and the adhesive isocyanate.

[0022] Furthermore, the concentration of the polymer solution is 0.5g / 50ml-2.5g / 50ml.

[0023] Furthermore, N=3, meaning that the hydroentangling process uses 3 hydroentangling stages. The pressure of the first hydroentangling stage is 2MPa-4MPa, the pressure of the second hydroentangling stage is 3MPa-6MPa, and the pressure of the third hydroentangling stage is 3MPa-6MPa.

[0024] Furthermore, the piercing directions of the three water-jet stingers are either forward piercing, reverse piercing, forward piercing, or forward piercing, forward piercing, reverse piercing.

[0025] First, pre-spinning is performed through the first forward hydroentangling stage, which makes the fiber web set on the upper and lower sides of the fabric adhere to the fabric. Then, forward spinning and reverse spinning are performed separately. Forward spinning is to hydroentangle the fabric from top to bottom in the direction of the first hydroentangling stage, while reverse spinning is to hydroentangle the fabric by setting up hydroentangling nozzles from bottom to top.

[0026] Furthermore, the filament fabric with a smooth, inert surface is an aramid fabric, an ultra-high molecular weight polyethylene fabric, or a blend of aramid and ultra-high molecular weight polyethylene; the weft density of the fabric is 15-26 yarns / inch, the yarn fineness is 800D-1000D, the warp density is the same as or different from the weft density, and the fabric's areal density is 200-340 g / m². 2 .

[0027] The areal density of the intermediate fabric cannot be too high. If it is too high, the yarns will be too tightly packed with very small gaps, leaving little space for the nonwoven fibers to penetrate. As a result, the fibers in the nonwoven fiber web will not penetrate the fabric enough to form a through-structure, and the performance will deteriorate.

[0028] The present invention also provides a fabric-reinforced polymer composite material prepared by the preparation method described above.

[0029] Compared with existing technologies, the fabric-reinforced polymer composite material and its preparation method described in this invention have the following advantages:

[0030] (1) The method for preparing the fabric-reinforced polymer composite material of the present invention first fixes the thermoplastic fiber web to both sides of the fabric through a hydroentangling process. The hydroentangling allows the thermoplastic fibers in the thermoplastic fiber web to interweave and bind with the fabric, resulting in a strong bond. After drying, a polymer surface film is applied to both sides of the base fabric layer. Heating causes the polymer surface film to bond with the base fabric layer. Because the surface of the base fabric layer is made of the same material as the polymer surface film, the material consistency facilitates thermoforming fusion, thereby increasing the peel strength and improving the adhesion strength of the composite material coating. Moreover, when the hydroentangling medium is a polymer solution, the polymer solution remains in the pores of the fabric and the thermoplastic fiber web during the hydroentangling process. When subsequently dried and heated, it promotes the fusion of the polymer in the pores with the thermoplastic fiber web, thereby further enhancing the peel strength.

[0031] (2) The preparation method of the fabric-reinforced polymer composite material of the present invention further includes impregnation treatment. The impregnation solution is made of the same material as the thermoplastic fiber web. During impregnation, the polymer will penetrate into the pores of the fabric and the thermoplastic fiber web, which is beneficial for the polymer in the pores to fuse with the thermoplastic fiber web during subsequent drying and heating, thereby further enhancing the peel strength.

[0032] (3) The fabric-reinforced polymer composite material described in this invention is suitable for filament fabrics with smooth and inert surfaces, such as aramid fabrics, ultra-high molecular weight polyethylene fabrics, and aramid fabrics and ultra-high molecular weight polyethylene fabrics that have undergone various physical and chemical modifications to increase the surface roughness and surface polarity of the fibers. Attached Figure Description

[0033] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0034] Figure 1 This is a schematic diagram of the structure of the fabric-reinforced polymer composite material prepared in Example 1 of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1-Fabric; 2-Base fabric layer; 3-Polymer surface film. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0038] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] A method for preparing a fabric-reinforced polymer composite material, the method comprising the following steps:

[0041] 1) Preparation of thermoplastic fiber web

[0042] PVC thermoplastic fibers are carded into a web using a carding machine to obtain a surface density of 50 g / m². 2 Thermoplastic fiber web;

[0043] 2) Prepare a 0.5g / 50ml polymer solution, which is composed of PVC solution, diisononyl phthalate plasticizer, and isocyanate binder;

[0044] 3) Hydroentangling treatment

[0045] Aramid fabric is layered with a thermoplastic fiber web, with the fabric positioned between the upper and lower layers of the thermoplastic fiber web. A single hydroentangling process is used to reinforce the two layers of thermoplastic fiber web and the fabric. The hydroentangling pressure is 2 MPa, and the hydroentangling medium is tap water. This process enables the thermoplastic fibers in the thermoplastic fiber web to penetrate and bind the fabric, resulting in a thermoplastic fiber-fabric composite layer I. The aramid fabric has a warp density of 20 ends / inch, a weft density of 20 ends / inch, a warp fineness of 1000D, and a weft fineness of 1000D. The fabric's areal density is 280 g / m². 2 ;

[0046] 4) Impregnation treatment

[0047] The thermoplastic fiber and fabric composite layer I is impregnated with a polymer solution in a glue tank, and then the excess polymer solution is extruded through a pressure roller to obtain thermoplastic fiber and fabric composite layer II;

[0048] 5) Drying treatment

[0049] The thermoplastic fiber and fabric composite layer I is dried in an oven to obtain a base fabric layer with a polymer film;

[0050] 6) Preparation of composite materials

[0051] The base fabric layer and the PVC surface film are preheated separately. Then, the surface film is placed on both sides of the base fabric layer and bonded to the upper and lower layers of the base fabric layer, respectively. Two sets of heating rollers are used to further increase the bonding strength, ultimately yielding a fabric-reinforced polymer composite material, as shown in the schematic diagram below. Figure 1 As shown, the middle layer is a fabric, and from the middle to both sides are the base fabric layer and the polymer surface film, respectively.

[0052] Example 2

[0053] A method for preparing a fabric-reinforced polymer composite material, the method comprising the following steps:

[0054] 1) Preparation of thermoplastic fiber web

[0055] PVC thermoplastic fibers are carded into a web using a carding machine to obtain a surface density of 30 g / m². 2 Thermoplastic fiber web;

[0056] 2) Prepare a 1g / 50ml polymer solution, which is composed of a mixture of PVC solution and PVA solution, diisononyl phthalate plasticizer, and isocyanate binder;

[0057] 3) Hydroentangling treatment

[0058] Ultra-high molecular weight polyethylene (UHMWPE) fabric is laminated with thermoplastic fiber webs, with the fabric positioned between the upper and lower layers of thermoplastic fiber webs. A single hydroentangling process is used to reinforce the two layers of thermoplastic fiber webs and the fabric. The hydroentangling pressure is 2.5 MPa, and the hydroentangling medium is tap water. This process enables the thermoplastic fibers in the thermoplastic fiber web to penetrate and bind the fabric, resulting in a thermoplastic fiber-fabric composite layer I. The UHMWPE fabric has a warp density of 18 yarns / inch, a weft density of 18 yarns / inch, a warp fineness of 1000D, and a weft fineness of 1000D. The fabric's areal density is 280 g / m². 2 ;

[0059] 4) Impregnation treatment

[0060] The thermoplastic fiber and fabric composite layer I is impregnated with a polymer solution in a glue tank, and then the excess polymer solution is extruded through a pressure roller to obtain thermoplastic fiber and fabric composite layer II;

[0061] 5) Drying treatment

[0062] The thermoplastic fiber and fabric composite layer I is dried in an oven to obtain a base fabric layer with a polymer film;

[0063] 6) Preparation of composite materials

[0064] The base fabric layer and the PVC surface film are preheated separately. Then, the surface film is placed on both sides of the base fabric layer and bonded to the upper and lower layers of the base fabric layer respectively. The bonding strength is further increased by two sets of heating rollers, and finally, the fabric-reinforced polymer composite material is obtained.

[0065] Example 3

[0066] A method for preparing a fabric-reinforced polymer composite material, the method comprising the following steps:

[0067] 1) Preparation of thermoplastic fiber web

[0068] PVC thermoplastic fibers are carded into a web using a carding machine to obtain a surface density of 50 g / m². 2 Thermoplastic fiber web;

[0069] 2) Prepare a 0.5g / 50ml polymer solution, which is composed of PVC solution, diisononyl phthalate plasticizer, and isocyanate binder;

[0070] 3) Hydroentangling treatment

[0071] Aramid fabric is laminated with a thermoplastic fiber web, with the fabric positioned between the upper and lower layers of thermoplastic fiber web. A single hydroentangling process is used to reinforce the upper and lower layers of thermoplastic fiber web and the fabric. The hydroentangling pressure is 2 MPa, and the hydroentangling medium is the polymer solution prepared in step 2). This process enables the thermoplastic fibers in the thermoplastic fiber web to penetrate and bind the fabric, resulting in a thermoplastic fiber-fabric composite layer I. The aramid fabric has a warp density of 20 yarns / inch, a weft density of 20 yarns / inch, a warp fineness of 1000D, and a weft fineness of 1000D. The areal density of the fabric is 280 g / m². 2 ;

[0072] 4) Impregnation treatment

[0073] The thermoplastic fiber and fabric composite layer I is impregnated with a polymer solution in a glue tank, and then the excess polymer solution is extruded through a pressure roller to obtain thermoplastic fiber and fabric composite layer II;

[0074] 5) Drying treatment

[0075] The thermoplastic fiber and fabric composite layer I is dried in an oven to obtain a base fabric layer with a polymer film;

[0076] 6) Preparation of composite materials

[0077] The base fabric layer and the PVC surface film are preheated separately. Then, the surface film is placed on both sides of the base fabric layer and bonded to the upper and lower layers of the base fabric layer respectively. The bonding strength is further increased by two sets of heating rollers, and finally, the fabric-reinforced polymer composite material is obtained.

[0078] Example 4

[0079] A method for preparing a fabric-reinforced polymer composite material, the method comprising the following steps:

[0080] 1) Preparation of thermoplastic fiber web

[0081] PVC thermoplastic fibers are carded into a web using a carding machine to obtain a surface density of 50 g / m². 2 Thermoplastic fiber web;

[0082] 2) Prepare a 0.5g / 50ml polymer solution, which is composed of PVC solution, diisononyl phthalate plasticizer, and isocyanate binder;

[0083] 3) Hydroentangling treatment

[0084] Aramid fabric is layered with a thermoplastic fiber web, with the fabric positioned between the upper and lower layers of thermoplastic fiber web. A three-stage hydroentangling process is used to reinforce the upper and lower layers of thermoplastic fiber web and the fabric. The pressure of the first hydroentangling stage is 2 MPa, the second stage is 4 MPa, and the third stage is 4 MPa. The piercing directions are forward piercing, reverse piercing, and forward piercing. The hydroentangling medium is the polymer solution prepared in step 2). This process achieves the insertion and binding of thermoplastic fibers in the thermoplastic fiber web onto the fabric, resulting in a thermoplastic fiber-fabric composite layer I. The aramid fabric has a warp density of 20 yarns / inch, a weft density of 20 yarns / inch, a warp fineness of 1000D, and a weft fineness of 1000D. The fabric's areal density is 280 g / m². 2 ;

[0085] 4) Impregnation treatment

[0086] The thermoplastic fiber and fabric composite layer I is impregnated with a polymer solution in a glue tank, and then the excess polymer solution is extruded through a pressure roller to obtain thermoplastic fiber and fabric composite layer II;

[0087] 5) Drying treatment

[0088] The thermoplastic fiber and fabric composite layer I is dried in an oven to obtain a base fabric layer with a polymer film;

[0089] 6) Preparation of composite materials

[0090] The base fabric layer and the PVC surface film are preheated separately. Then, the surface film is placed on both sides of the base fabric layer and bonded to the upper and lower layers of the base fabric layer respectively. The bonding strength is further increased by two sets of heating rollers, and finally, the fabric-reinforced polymer composite material is obtained.

[0091] Example 5

[0092] A method for preparing a fabric-reinforced polymer composite material, the method comprising the following steps:

[0093] 1) Preparation of thermoplastic fiber web

[0094] PVC thermoplastic fibers are carded into a web using a carding machine to obtain a surface density of 50 g / m². 2 Thermoplastic fiber web;

[0095] 2) Prepare a 0.5g / 50ml polymer solution, which is composed of PVC solution, diisononyl phthalate plasticizer, and isocyanate binder;

[0096] 3) Hydroentangling treatment

[0097] Aramid fabric is laminated with a thermoplastic fiber web, with the fabric positioned between the upper and lower layers of thermoplastic fiber web. A single hydroentangling process is used to reinforce the upper and lower layers of thermoplastic fiber web and the fabric. The hydroentangling pressure is 2 MPa, and the hydroentangling medium is the polymer solution prepared in step 2). This process enables the thermoplastic fibers in the thermoplastic fiber web to penetrate and bind the fabric, resulting in a thermoplastic fiber-fabric composite layer I. The aramid fabric has a warp density of 20 yarns / inch, a weft density of 20 yarns / inch, a warp fineness of 1000D, and a weft fineness of 1000D. The areal density of the fabric is 280 g / m². 2 ;

[0098] 4) Drying treatment

[0099] The thermoplastic fiber and fabric composite layer I is dried in an oven to obtain a base fabric layer with a polymer film;

[0100] 5) Preparation of composite materials

[0101] The base fabric layer and the PVC surface film are preheated separately. Then, the surface film is placed on both sides of the base fabric layer and bonded to the upper and lower layers of the base fabric layer respectively. The bonding strength is further increased by two sets of heating rollers, and finally, the fabric-reinforced polymer composite material is obtained.

[0102] Example 6

[0103] A method for preparing a fabric-reinforced polymer composite material, the method comprising the following steps:

[0104] 1) Preparation of thermoplastic fiber web

[0105] PVC thermoplastic fibers are carded into a web using a carding machine to obtain a surface density of 50 g / m². 2 Thermoplastic fiber web;

[0106] 2) Hydroentangling treatment

[0107] Aramid fabric is layered with a thermoplastic fiber web, with the fabric positioned between the upper and lower layers of the thermoplastic fiber web. A single hydroentangling process is used to reinforce the two layers of thermoplastic fiber web and the fabric. The hydroentangling pressure is 2 MPa, and the hydroentangling medium is tap water. This process enables the thermoplastic fibers in the thermoplastic fiber web to penetrate and bind the fabric, resulting in a thermoplastic fiber-fabric composite layer I. The aramid fabric has a warp density of 20 ends / inch, a weft density of 20 ends / inch, a warp fineness of 1000D, and a weft fineness of 1000D. The fabric's areal density is 280 g / m². 2 ;

[0108] 3) Drying treatment

[0109] The thermoplastic fiber and fabric composite layer I is dried in an oven to obtain a base fabric layer with a polymer film;

[0110] 4) Preparation of composite materials

[0111] The base fabric layer and the PVC surface film are preheated separately. Then, the surface film is placed on both sides of the base fabric layer and bonded to the upper and lower layers of the base fabric layer respectively. The bonding strength is further increased by two sets of heating rollers, and finally, the fabric-reinforced polymer composite material is obtained.

[0112] Comparative Example 1

[0113] Using untreated aramid fabric as the base layer, with a warp density of 20 yarns / inch and a weft density of 20 yarns / inch, a warp fineness of 1000D and a weft fineness of 1000D, the fabric is directly laminated with a PVC surface film using the method described in step 6).

[0114] Comparative Example 2

[0115] The difference from Example 1 is that the surface density of the thermoplastic fiber web is 110 g / m². 2 .

[0116] Comparative Example 3

[0117] The difference from Example 1 is that the surface density of the thermoplastic fiber web is 20 g / m². 2 .

[0118] The composite materials prepared in the examples and comparative examples were subjected to peel strength tests, and the results are shown in the table below.

[0119] Table 1. Performance Comparison of Composite Materials Prepared in Examples and Comparative Examples

[0120]

[0121]

[0122] Results Explanation:

[0123] As shown in the table above, the peel strength of the composite materials prepared according to the method of the present invention is superior to that of the comparative examples, and the surface density of the thermoplastic fiber web also affects the peel strength of the composite materials. Furthermore, comparing Examples 1 and 3 reveals that when using a polymer as a medium, the polymer solution remains in the pores of the fabric and thermoplastic fiber web during the hydroentangling process. Subsequent drying and heating promote the fusion of the polymer in the pores with the thermoplastic fiber web, thereby further enhancing the peel strength. Comparing Examples 3 and 4 shows that three hydroentangling passes are more effective than one. Comparing Examples 3 and 5, and Examples 1 and 6, demonstrates that impregnation is more beneficial for enhancing peel strength. Comparing Examples 1, 5, and 6 reveals that if water is used as the hydroentangling medium, impregnation is necessary to achieve the same effect as polymer hydroentangling.

[0124] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for preparing a fabric-reinforced polymer composite material, characterized in that: The method includes the following steps: 1) Preparation of thermoplastic fiber web Thermoplastic fiber web is obtained by carding thermoplastic fibers into a web using a carding machine; 2) Prepare a polymer solution in which the polymer composition is the same as that of the thermoplastic fiber; 3) Hydroentangling treatment A filament fabric with a smooth, inert surface is laminated with a thermoplastic fiber web, with the fabric positioned between the upper and lower layers of thermoplastic fiber web. An N-stage hydroentangling process is used to reinforce the upper and lower layers of thermoplastic fiber web and the fabric, achieving the interpenetration and cohesion of the thermoplastic fibers in the web onto the fabric, thus producing a thermoplastic fiber-fabric composite layer I. The hydroentangling medium is a polymer solution or water. 4) Drying treatment The thermoplastic fiber and fabric composite layer I is dried in an oven to obtain a base fabric layer with a polymer film; 5) Preparation of composite materials The base fabric layer and the polymer surface film are preheated separately. Then, the polymer surface film is placed on both sides of the base fabric layer and bonded to the upper and lower layers of the base fabric layer respectively. The bonding strength is further increased by two sets of heating rollers, and finally, a fabric-reinforced polymer composite material is obtained. The composition of the polymer surface film is the same as that of the thermoplastic fiber. The areal density of the thermoplastic fiber web is 30 g / m 2 - 100 g / m 2 ; Between steps 3) and 4), there is also an impregnation process, namely, the thermoplastic fiber and fabric composite layer I is impregnated with polymer solution through a glue tank, and then the excess polymer solution is squeezed out by pressure rollers to obtain thermoplastic fiber and fabric composite layer II; during drying, the obtained thermoplastic fiber and fabric composite layer II is dried in an oven to obtain a base fabric layer with polymer film. N=3, meaning that the hydroentanglement process uses 3 hydroentanglements. The pressure of the first hydroentanglement is 2MPa-4MPa, the pressure of the second hydroentanglement is 3MPa-6MPa, and the pressure of the third hydroentanglement is 3MPa-6MPa. The piercing directions of the three water-spiked blades are either forward piercing, reverse piercing, forward piercing, or forward piercing, forward piercing, reverse piercing.

2. The method for preparing the fabric-reinforced polymer composite material according to claim 1, characterized in that: Thermoplastic fibers are one or more of PVC, PVA, EVA, PP, and PE, or a mixture thereof.

3. The method for preparing the fabric-reinforced polymer composite material according to claim 1, characterized in that: The polymer solution is a mixed solution composed of one or more of PVC, PVA, EVA, PP, and PE, along with the plasticizer diisononyl phthalate and the adhesive isocyanate.

4. The method for preparing the fabric-reinforced polymer composite material according to claim 1, characterized in that: The concentration of the polymer solution is 0.5g / 50ml-2.5g / 50ml.

5. The method for preparing the fabric-reinforced polymer composite material according to claim 1, characterized in that: The filament fabric with a smooth inert surface is aramid fabric or ultra-high molecular weight polyethylene fabric or a mixed fabric of aramid and ultra-high molecular weight polyethylene; the weft density of the fabric is 15-26 per inch, the yarn fineness is 800-1000D, and the area density of the fabric is 200-340 g / m 2 .

6. A fabric-reinforced polymer composite material prepared by the preparation method according to any one of claims 1-5.

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