High-performance ultra-high molecular weight polyethylene fiber cloth and preparation method thereof

Abstract

The invention relates to the technical field of high polymer materials, in particular to high-performance ultra-high molecular weight polyethylene fiber cloth and a preparation method thereof. The preparation method comprises the following steps: S1, immersing ultra-high molecular weight polyethylene fiber cloth into absolute ethyl alcohol, carrying out ultrasonic cleaning for 30 minutes, washing, immersing the fiber cloth into a proper amount of deionized water, continuously carrying out ultrasonic treatment for 30 minutes, and drying; s2, performing air plasma treatment on the ultra-high molecular weight polyethylene fiber cloth; s3, immersing the ultra-high molecular weight polyethylene fiber cloth treated in the step S2 into a flame retardant solution, and then drying; and S4, spraying the MXene dispersion liquid, and drying at 60 DEG C to obtain the high-performance ultra-high molecular weight polyethylene fiber cloth. The ultra-high molecular weight polyethylene fiber cloth prepared by the preparation method disclosed by the invention is very excellent in flame retardance and electromagnetic shielding performance, MXene sediment is effectively utilized, and the nano ferroferric oxide particles better exert the shielding capability.

Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and particularly relates to a high-performance ultra-high molecular weight polyethylene fiber cloth and a preparation method thereof. Background Art

[0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is usually a high-performance fiber prepared from a polyethylene resin with a molecular weight of more than 1 million. UHMWPE fiber has excellent properties such as high strength, high modulus, and low elongation at break. In addition to good chemical resistance, good seawater resistance, good abrasion resistance, good cut resistance, light aging resistance, low temperature resistance, good biocompatibility, low dielectric constant, high specific energy absorption, and high electromagnetic wave transmittance, UHMWPE fiber also has the advantages of low density and light weight. This makes UHMWPE fiber attract the attention of many countries and is widely used in fields such as national defense military supplies, aviation, aerospace, safety protection, ocean engineering, sports equipment, power communication, and medical materials.

[0003] Even though UHMWPE fiber has the above-mentioned many advantages, it still cannot overcome the defect that polyethylene itself is flammable. The limiting oxygen index of UHMWPE fiber is only 17%, and during the combustion process, it generates a large amount of heat and smoke, and there will also be a melting drop phenomenon, which may cause secondary disasters. Once a fire occurs during the work of the fiber in fields such as aviation and military, it will cause huge economic losses and human losses to the project, and may even endanger lives. At the same time, the flame retardant protection level of the bulletproof material and engineering fabric woven from it is low, posing a hidden danger to the life safety of users.

[0004] Moreover, the surface energy of the fiber is extremely low, showing extremely inert; due to the single linear molecular main chain structure, the ultra-long molecular main chain is highly oriented and crystallized in the crystalline region, and free-moving carriers cannot be formed inside and on the surface of the fiber. Its resistivity can reach 1012 Ω / cm without treatment, belonging to an insulator; coupled with poor hygroscopicity, it is easy to accumulate static electricity, bringing various inconveniences and even potential safety hazards during production and use. And UHMWPE fiber itself has good wave transmission performance, which greatly limits the application of lightweight and high-performance UHMWPE fiber in military protection equipment such as "stealth" tents / weapon skins.

[0005] Therefore, in view of the problems raised in the above background art, those skilled in the art propose an ultra-high molecular weight polyethylene fiber cloth with excellent flame retardant performance and excellent electromagnetic shielding ability at the same time. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-performance ultra-high molecular weight polyethylene fiber cloth and a preparation method thereof to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A preparation method of a high-performance ultra-high molecular weight polyethylene fiber cloth, comprising the following steps:

[0009] S1. Immerse the ultra-high molecular weight polyethylene fiber cloth in absolute ethanol and ultrasonically clean it for 30 min. After taking it out, first rinse the fiber cloth with running water multiple times, then immerse the fiber cloth in an appropriate amount of deionized water and continue ultrasonication for 30 min, and finally place it in an oven at 60 °C for drying until it is completely dry;

[0010] S2. Further treat the ultra-high molecular weight polyethylene fiber cloth treated in step S1 with air plasma;

[0011] S3. Immerse the ultra-high molecular weight polyethylene fiber cloth treated in step S2 in a flame retardant solution for ultrasonic treatment, and then take out the ultra-high molecular weight polyethylene fiber cloth from the flame retardant solution and dry it at 60 °C;

[0012] S4. Spray the ultra-high molecular weight polyethylene fiber cloth treated in step S4 with MXene dispersion liquid, and obtain a high-performance ultra-high molecular weight polyethylene fiber cloth after drying at 60 °C;

[0013] The flame retardant in the flame retardant solution is prepared by the following method:

[0014] Add polyethyleneimine to absolute ethanol and stir for 30 min; then add ammonium polyphosphate and stir for 1 h, add MXene sediment again, and continue stirring for 12 h; continue to add modified nano-ferroferric oxide particles and continue stirring for 30 min; finally evaporate the absolute ethanol at 80 °C to obtain the flame retardant.

[0015] Further, the treatment time of the air plasma in step S2 is 60 s and the power is 50 W.

[0016] Further, the solvent used in the flame retardant solution in step S3 is deionized water, and the mass fraction of the flame retardant in the flame retardant solution is 10-20%.

[0017] Further, the mass ratio between polyethyleneimine, absolute ethanol, MXene sediment, ammonium polyphosphate and modified nano-ferroferric oxide particles during the preparation of the flame retardant is 1:(25-30):1:(10-12):(2-3).

[0018] Further, the modified nano-ferroferric oxide particles are prepared by the following method:

[0019] Prepare an iron(III) chloride ethylene glycol solution with a mass fraction of 4%, then add sodium citrate and polyethyleneimine, and carry out a hydrothermal reaction for 10 - 20 h. Filter to separate the sediment. After the sediment is washed with sufficient absolute ethanol, it is vacuum dried at 70 °C to obtain modified nano-sized iron(II,III) oxide particles.

[0020] Furthermore, the mass ratio of ferric chloride, polyethyleneimine, and sodium citrate is 1:(1 - 3):(2 - 4).

[0021] A high-performance ultra-high molecular weight polyethylene fiber cloth is prepared by the preparation method of the above-mentioned high-performance ultra-high molecular weight polyethylene fiber cloth.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. The present invention prepares an ultra-high molecular weight polyethylene fiber cloth. During the preparation process, polyethyleneimine is used as an adhesive for the flame retardant. A large number of amino groups on its surface can react with ammonium polyphosphate to generate chemical bonds and bond together. It can also undergo dehydration with the hydroxyl groups on the surface of MXene to generate chemical bonding, so that APP and MXene are firmly combined. The flame retardant can endow the polyethylene fiber with excellent electromagnetic shielding and flame retardant properties at the same time. The raw materials for preparing the electromagnetic shielding and flame retardant ultra-high molecular weight polyethylene fiber in the present invention are mainly ultra-high molecular weight polyethylene fiber, ammonium polyphosphate, polyethyleneimine, and MXene. As a commonly used flame retardant, ammonium polyphosphate can play a flame retardant role through both the condensed phase and the gas phase, and has advantages such as good flame retardant effect, good smoke suppression property, and non-toxic and environmentally friendly. As a two-dimensional structural material, MXene has been widely concerned in the field of EMI shielding due to its good electrical conductivity, large specific surface area, light weight, and excellent flexibility. Through the synergistic effect of the above two materials, the present invention obtains an ultra-high molecular weight polyethylene fiber material with both electromagnetic shielding and flame retardant properties, having excellent flame retardant performance and electromagnetic shielding performance.

[0024] 2. In the present invention, due to the high electrical conductivity of MXene, there are a large number of free electrons on the surface of Ti3C2T x When electromagnetic waves impact Ti3C2T x , most of them are reflected. The remaining electromagnetic waves interact with the lattice of Ti3C2T x to generate Ohmic loss, resulting in energy decline. The remaining electromagnetic waves penetrate the first layer and then undergo the process of reflection / absorption / transmission again until they are completely absorbed in the structure, providing good electromagnetic shielding for the fiber. At the same time, introducing phosphorus and nitrogen elements can endow the polyethylene fiber with excellent flame retardant properties.

[0025] 3. In the present invention, MXene deposits are also introduced into the flame retardant. The MXene deposits are waste materials during the preparation process of MXene. In the present invention, the MXene deposits added during the preparation of the flame retardant not only reuse the difficult-to-treat MXene deposits, but also improve the flame retardant performance and electromagnetic shielding performance of the ultra-high molecular weight polyethylene fiber cloth.

[0026] 4. In the present invention, the surface of the ultra-high molecular weight polyethylene fiber cloth is treated by air plasma to generate simple polar functional groups such as hydroxyl, carbonyl, and amino groups on its surface, enhancing the polarity and roughness of the fiber interface and improving its interfacial performance with the flame retardant.

[0027] 5. In the present invention, modified nano-ferroferric oxide particles are also added. Polyethyleneimine is added during the preparation process of the modified nano-ferroferric oxide particles. Polyethyleneimine can coat and modify the surface of nano-ferroferric oxide. It not only improves the stability of nano-ferroferric oxide, but also facilitates its combination with ammonium polyphosphate through the action of polyethyleneimine, enabling it to be evenly dispersed in the flame retardant, avoiding the problems of easy agglomeration and uneven dispersion of nano-materials, and better exerting its electromagnetic shielding ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is the process flow chart for preparing the high-performance ultra-high molecular weight polyethylene fiber cloth of the present invention;

[0029] Figure 2 is the vertical combustion experiment diagram in Example 1 of the present invention;

[0030] Figure 3 is the vertical combustion experiment diagram in Comparative Example 1 of the present invention;

[0031] Figure 4 is the vertical combustion experiment diagram in Comparative Example 2 of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figures 1 to 4 , the present invention provides:

[0034] Example 1

[0035] A preparation method of a high-performance ultra-high molecular weight polyethylene fiber cloth, comprising the following steps:

[0036] S1. Immerse the ultra-high molecular weight polyethylene fiber cloth in absolute ethanol and clean it by ultrasonic wave (ultrasonic frequency is 40 kHz, which is the same as that in Example 1 in subsequent embodiments) for 30 min. After taking it out, first rinse the fiber cloth with running water for many times, then immerse the fiber cloth in an appropriate amount of deionized water and continue to clean it by ultrasonic wave (ultrasonic frequency is 40 kHz, which is the same as that in Example 1 in subsequent embodiments) for 30 min, and finally place it in an oven at 60 °C to dry until it is completely dry;

[0037] S2. Further process the ultra-high molecular weight polyethylene fiber cloth treated in step S1 by air plasma. The treatment time of the air plasma is 60 s and the power is 50 W;

[0038] S3. Immerse the ultra-high molecular weight polyethylene fiber cloth treated in step S2 into the flame retardant solution for ultrasonic treatment (ultrasonic frequency is 40 kHz, which is the same as that in Example 1 in subsequent embodiments). The solvent used in the flame retardant solution is deionized water, and the mass fraction of the flame retardant in the flame retardant solution is 15%. Then take out the ultra-high molecular weight polyethylene fiber cloth from the flame retardant solution and dry it at 60 °C;

[0039] S4. Spray the ultra-high molecular weight polyethylene fiber cloth treated in step S4 with MXene dispersion liquid, and obtain the high-performance ultra-high molecular weight polyethylene fiber cloth after drying at 60 °C;

[0040] The flame retardant in the above flame retardant solution is prepared by the following method:

[0041] Add 2 g of polyethyleneimine to 55 g of absolute ethanol and stir for 30 min; then add 22 g of ammonium polyphosphate and stir for 1 h, add 2 g of MXene sediment again and continue to stir for 12 h; continue to add 5 g of modified nano-ferroferric oxide particles and continue to stir for 30 min; finally evaporate the absolute ethanol at 80 °C to obtain the flame retardant;

[0042] The above modified nano-ferroferric oxide particles are prepared by the following method:

[0043] Prepare a ferric chloride ethylene glycol solution with a mass fraction of 4%. The amount of ferric chloride used is 40 g and the amount of ethylene glycol used is 1 kg. Then add 110 g of sodium citrate and 80 g of polyethyleneimine, carry out a hydrothermal reaction for 15 h, filter and separate the sediment. After the sediment is washed with sufficient absolute ethanol, it is vacuum dried at 70 °C to obtain the modified nano-ferroferric oxide particles.

[0044] Example 2

[0045] A preparation method of a high-performance ultra-high molecular weight polyethylene fiber cloth, comprising the following steps:

[0046] S1. Immerse the ultra-high molecular weight polyethylene fiber cloth in absolute ethanol and ultrasonically clean it for 30 min. After taking it out, first rinse the fiber cloth with running water multiple times, then immerse the fiber cloth in an appropriate amount of deionized water and continue ultrasonic treatment for 30 min. Finally, place it in an oven and dry it at 60 °C until it is completely dry.

[0047] S2. Further treat the ultra-high molecular weight polyethylene fiber cloth treated in step S1 with air plasma. The treatment time of the air plasma is 60 s and the power is 50 W.

[0048] S3. Immerse the ultra-high molecular weight polyethylene fiber cloth treated in step S2 in a flame retardant solution for ultrasonic treatment. The solvent used in the flame retardant solution is deionized water, and the mass fraction of the flame retardant in the flame retardant solution is 10%. Then take out the ultra-high molecular weight polyethylene fiber cloth from the flame retardant solution and dry it at 60 °C.

[0049] S4. Spray the ultra-high molecular weight polyethylene fiber cloth treated in step S4 with MXene dispersion liquid, and obtain a high-performance ultra-high molecular weight polyethylene fiber cloth after drying at 60 °C.

[0050] The flame retardant in the above flame retardant solution is prepared by the following method:

[0051] Add 2 g of polyethyleneimine to 50 g of absolute ethanol and stir for 30 min; then add 20 g of ammonium polyphosphate and stir for 1 h. Add 2 g of MXene sediment again and continue stirring for 12 h; continue to add 4 g of modified nano-ferroferric oxide particles and continue stirring for 30 min; finally, evaporate the absolute ethanol at 80 °C to obtain the flame retardant.

[0052] The above modified nano-ferroferric oxide particles are prepared by the following method:

[0053] Prepare a ferric chloride ethylene glycol solution with a mass fraction of 4%. The amount of ferric chloride used is 40 g, and the amount of ethylene glycol used is 1 kg. Then add 80 g of sodium citrate and 40 g of polyethyleneimine, carry out a hydrothermal reaction for 10 h, filter and separate the sediment. After the sediment is washed with sufficient absolute ethanol, it is vacuum dried at 70 °C to obtain the modified nano-ferroferric oxide particles.

[0054] Example 3

[0055] A preparation method of a high-performance ultra-high molecular weight polyethylene fiber cloth, comprising the following steps:

[0056] S1. Immerse the ultra-high molecular weight polyethylene fiber cloth in absolute ethanol and ultrasonically clean it for 30 min. After taking it out, first rinse the fiber cloth with running water multiple times, then immerse the fiber cloth in an appropriate amount of deionized water and continue to ultrasonically clean it for 30 min. Finally, place it in an oven and dry it at 60 °C until it is completely dry;

[0057] S2. Further treat the ultra-high molecular weight polyethylene fiber cloth treated in step S1 with air plasma. The treatment time of the air plasma is 60 s and the power is 50 W;

[0058] S3. Immerse the ultra-high molecular weight polyethylene fiber cloth treated in step S2 in a flame retardant solution and perform ultrasonic treatment. The solvent used in the flame retardant solution is deionized water, and the mass fraction of the flame retardant in the flame retardant solution is 20%. Then take out the ultra-high molecular weight polyethylene fiber cloth from the flame retardant solution and dry it at 60 °C;

[0059] S4. Spray the ultra-high molecular weight polyethylene fiber cloth treated in step S4 with an MXene dispersion liquid, and obtain a high-performance ultra-high molecular weight polyethylene fiber cloth after drying at 60 °C;

[0060] The flame retardant in the above flame retardant solution is prepared by the following method:

[0061] Add 2 g of polyethyleneimine to 60 g of absolute ethanol and stir for 30 min; then add 24 g of ammonium polyphosphate and stir for 1 h. Add 2 g of MXene sediment again and continue to stir for 12 h; continue to add 6 g of modified nano-ferroferric oxide particles and continue to stir for 30 min; finally, evaporate the absolute ethanol at 80 °C to obtain the flame retardant;

[0062] The above modified nano-ferroferric oxide particles are prepared by the following method:

[0063] Prepare a 4% ferric chloride ethylene glycol solution with 40 g of ferric chloride and 1 kg of ethylene glycol. Then add 160 g of sodium citrate and 120 g of polyethyleneimine, and perform a hydrothermal reaction for 20 h. Filter and separate the sediment. After the sediment is washed with sufficient absolute ethanol, it is vacuum dried at 70 °C to obtain the modified nano-ferroferric oxide particles.

[0064] Example 4

[0065] A method for preparing a high-performance ultra-high molecular weight polyethylene fiber cloth, comprising the following steps:

[0066] S1. Immerse the ultra-high molecular weight polyethylene fiber cloth in absolute ethanol and ultrasonically clean it for 30 min. After taking it out, first rinse the fiber cloth with running water multiple times, then immerse the fiber cloth in an appropriate amount of deionized water and continue to ultrasonically clean it for 30 min. Finally, place it in an oven and dry it at 60 °C until it is completely dry;

[0067] S2. Further process the ultra-high molecular weight polyethylene fiber cloth treated in step S1 with air plasma. The treatment time of the air plasma is 60 s and the power is 50 W.

[0068] S3. Immerse the ultra-high molecular weight polyethylene fiber cloth treated in step S2 into a flame retardant solution for ultrasonic treatment. The solvent used in the flame retardant solution is deionized water, and the mass fraction of the flame retardant in the flame retardant solution is 15%. Then take out the ultra-high molecular weight polyethylene fiber cloth from the flame retardant solution and dry it at 60 °C.

[0069] S4. Spray the ultra-high molecular weight polyethylene fiber cloth treated in step S4 with an MXene dispersion liquid, and dry it at 60 °C to obtain a high-performance ultra-high molecular weight polyethylene fiber cloth.

[0070] The flame retardant in the above flame retardant solution is prepared by the following method:

[0071] Add 2 g of polyethyleneimine to 52 g of absolute ethanol and stir for 30 min; then add 20 g of ammonium polyphosphate and stir for 1 h. Add 2 g of MXene sediment again and continue to stir for 12 h; continue to add 4.5 g of modified nano-ferroferric oxide particles and continue to stir for 30 min; finally, evaporate the absolute ethanol at 80 °C to obtain the flame retardant.

[0072] The above modified nano-ferroferric oxide particles are prepared by the following method:

[0073] Prepare an ethylene glycol solution of ferric chloride with a mass fraction of 4%. The amount of ferric chloride used is 40 g, and the amount of ethylene glycol used is 1 kg. Then add 150 g of sodium citrate and 50 g of polyethyleneimine, carry out a hydrothermal reaction for 18 h, filter and separate the sediment. After the sediment is washed with sufficient absolute ethanol, it is vacuum dried at 70 °C to obtain the modified nano-ferroferric oxide particles.

[0074] The preparation methods of MXene and MXene sediment in the present invention are as follows:

[0075] Generally, slowly add 30 g of Ti3AlC2 (MAX phase) powder into a mild etching agent composed of 30 g of LiF and 600 ml of 9 M HCl solution, and continue the etching process at 40 °C for 24 h; then centrifuge and wash with deionized water for several times (3500 rpm, 5 min) until the pH value of the solution is 5; then carry out a delamination process by adding 900 ml of absolute ethanol to the solution, and then carrying out ultrasonic treatment for 30 min (ultrasonic frequency is 40 kHz); then centrifuge and collect the supernatant MXene dispersion liquid and MXenes sediment.

[0076] MXene deposits are usually discarded after several layering cycles, which directly increases the cost of MXene and wastes potential materials. Therefore, a simple strategy for recycling waste MXene deposits has emerged, which is particularly important for the further industrial promotion of MXenes.

[0077] The main components of MXene deposits are unexfoliated multi-layer MXene, combined with unetched MAX stationary phase and residual few-layer MXene. During the combustion process, its components can react with oxygen to form titanium dioxide, improving the compactness of the carbon layer after combustion, isolating oxygen from entering the fabric, and improving the combustion performance of the fabric. In addition, MXene deposits have obvious conductivity, which helps to improve the electromagnetic shielding performance of the material.

[0078] The present invention also sets the following comparative examples:

[0079] Comparative Example 1

[0080] The difference between Comparative Example 1 and Example 1 is that the addition of MXene deposits was cancelled during the preparation of the flame retardant, and the remaining steps are exactly the same as those in Example 1.

[0081] Comparative Example 2

[0082] The difference between Comparative Example 2 and Example 1 is that the spraying process of the MXene dispersion in step S4 was cancelled, and the remaining steps are exactly the same as those in Example 1.

[0083] Comparative Example 3

[0084] The difference between Comparative Example 3 and Example 1 is that the addition of polyethyleneimine was cancelled during the preparation of the modified nano-ferric oxide particles, and the remaining steps are exactly the same as those in Example 1.

[0085] Vertical burning tests were carried out on Example 1, Comparative Example 1 and Comparative Example 2. The test standard was GB / T5455-2014, and the combustion results were respectively as Figures 2 - 4 shown. Through Figure 2 , Figure 3 and Figure 4 comparison, it can be seen that Figure 2 the burning length of the high-performance ultra-high molecular weight polyethylene fiber cloth in Figure 3 is significantly less than that of Figure 4 and

[0086] Furthermore, the EMI shielding performance of the ultra-high molecular weight polyethylene fiber cloths prepared in Examples 1-4 and Comparative Examples 1-3 was tested using a vector network analyzer (N5234B PNA-L, KEYSIGHT) in the frequency range of 8.2–12.4 GHz. The test results are shown in Table 1 below:

[0087] Table 1: Test results of the electromagnetic shielding performance of the ultra-high molecular weight polyethylene fiber cloths prepared in Examples 1-4 and Comparative Examples 1-3

[0088]

[0089]

[0090] From the data of Example 1 and Comparative Examples 1-2 in Table 1 above, it can be seen that in the present invention, adding MXene deposits and spraying MXene dispersions can improve the EMI shielding performance of the ultra-high molecular weight polyethylene fiber cloth; and from the data of Comparative Example 3 and Example 1, it can be seen that in the present invention, when preparing nano-ferroferric oxide particles, adding polyethyleneimine can help the nano-ferroferric oxide particles better combine with the flame retardant and improve the EMI shielding performance.

[0091] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preparation method of a high-performance ultra-high molecular weight polyethylene fiber cloth, characterized in that, It includes the following steps: S1. Immerse the ultra-high molecular weight polyethylene fiber cloth in absolute ethanol and ultrasonically clean it for 30 min. After taking it out, first rinse the fiber cloth with running water multiple times, then immerse the fiber cloth in an appropriate amount of deionized water and continue to ultrasonically clean it for 30 min. Finally, place it in an oven and dry it at 60 °C until it is completely dry; S2. Use air plasma to further process the ultra-high molecular weight polyethylene fiber cloth treated in step S1; S3. Immerse the ultra-high molecular weight polyethylene fiber cloth treated in step S2 in a flame retardant solution and perform ultrasonic treatment. After that, take out the ultra-high molecular weight polyethylene fiber cloth from the flame retardant solution and dry it at 60 °C; S4. Spray the ultra-high molecular weight polyethylene fiber cloth treated in step S4 with MXene dispersion liquid, and obtain a high-performance ultra-high molecular weight polyethylene fiber cloth after drying at 60 °C; The flame retardant in the flame retardant solution is prepared by the following method: Add polyethyleneimine to absolute ethanol and stir for 30 min; then add ammonium polyphosphate and stir for 1 h. Add MXene sediment again and continue to stir for 12 h; continue to add modified nano-ferroferric oxide particles and continue to stir for 30 min; finally, evaporate the absolute ethanol at 80 °C to obtain the flame retardant.

2. The preparation method of the high-performance ultra-high molecular weight polyethylene fiber cloth according to claim 1, characterized in that, In step S2, the treatment time of the air plasma is 60 s and the power is 50 W.

3. The preparation method of the high-performance ultra-high molecular weight polyethylene fiber cloth according to claim 1, characterized in that, In step S3, the solvent used in the flame retardant solution is deionized water, and the mass fraction of the flame retardant in the flame retardant solution is 10 - 20%.

4. The preparation method of the high-performance ultra-high molecular weight polyethylene fiber cloth according to claim 1, wherein, In the preparation process of the flame retardant, the mass ratio between polyethyleneimine, absolute ethanol, MXene sediment, ammonium polyphosphate and modified nano-ferroferric oxide particles is 1:(25 - 30):1:(10 - 12):(2 - 3).

5. The preparation method of the high-performance ultra-high molecular weight polyethylene fiber cloth according to claim 1, characterized in that, The modified nano-ferroferric oxide particles are prepared by the following method: Prepare an iron trichloride ethylene glycol solution with a mass fraction of 4%, then add sodium citrate and polyethyleneimine, and perform a hydrothermal reaction for 10 - 20 h. Filter and separate the sediment. After the sediment is washed with sufficient absolute ethanol, it is vacuum dried at 70 °C to obtain the modified nano-ferroferric oxide particles.

6. The preparation method of the high-performance ultra-high molecular weight polyethylene fiber cloth according to claim 5, characterized in that, The mass ratio between iron trichloride, polyethyleneimine and sodium citrate is 1:(1 - 3):(2 - 4).

7. A high-performance ultra-high molecular weight polyethylene fiber cloth, characterized in that, It is prepared by the preparation method of the high-performance ultra-high molecular weight polyethylene fiber cloth described in any one of claims 1 - 6.

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